WO2019103334A1 - Soot blower system and control method therefor - Google Patents

Abstract

A soot blower system and a control method therefor are disclosed. Specifically, disclosed are a soot blower system and a control method therefor, the soot blower system comprising: a combustor having a compartment portion which is an inner space partitioned into a plurality of compartments; a heat exchange pipe disposed inside the combustor; a plurality of soot blowers provided inside the combustor; a plurality of sensor units for sensing the temperature of the plurality of compartments; and a control unit for controlling the soot blowers through a preset method according to the temperature sensed by the sensor unit.

Description

Soot blower system and its control method

More particularly, the present invention relates to a soot blower control system that divides the interior of a combustor into a plurality of compartments, calculates a soot removal condition according to a temperature sensed by each compartment, To a soot blower system capable of blowing steam and an additive by controlling the blower, and a control method thereof.

When a thermal power plant or a boiler is operated, soot may be generated in the combustor. A soot is produced by incomplete combustion of a fuel containing carbon, and is attached to the surface of a heat exchange tube which floats in the combustion gas as particulates or is located inside the combustor or inside the combustor. In addition, when the component having strong adhesive property is contained in the fuel, the ash is melted and adhered to the surface of the heat exchange tube frequently at high temperature conditions during the combustion (slagging), and even if it is not melted, Fouling often occurs when these components are adhered to the surface of the tube at the side of the tube. In the present specification, all of these phenomena are collectively referred to as soot.

When the soot is generated and is present in the combustor, the heat generated during the combustion and the heat exchange efficiency with the heat exchange fluid flowing inside the heat exchange pipe are reduced. That is, since more fuel and combustion must be made to obtain the same heat quantity, combustion efficiency and economical efficiency in the soot occurrence can be reduced.

Accordingly, technologies for checking whether a soot is attached to the surface of a heat exchange pipe located inside a combustor or inside a combustor, and for removing the soot have been introduced.

Japanese Laid-Open Patent Publication No. 2014-510250 discloses a temperature sensing soot blower. Specifically, a temperature sensing soot blower capable of measuring the temperature of a combustion gas, a lance tube, and / or a cleaning fluid with a soot blower function by adding a sensor portion for sensing temperature to the soot blower is disclosed.

However, this type of sootblower can only sense the temperature in the area where the sootblower is located, so that it is difficult to detect the temperature of the area in which the sootblower can not reach the inside of the combustor and to immediately cope with it. In addition, there is a limitation in finding a difference between a profit obtained when the soot blower is operated and a profit obtained when the soot blower is not operated. In addition, due to the characteristics of the soot blower which removes the sole by only the physical force, there is a limit to the control of the soot having a very high stickiness in consideration of problems such as erosion of the tube. In recent years, as the fuels used in boilers have diversified, solutions to these problems have become increasingly important.

Korean Patent No. 10-0345501 discloses a thermodynamic modeling module of a boiler soot blower control system. Specifically, the thermodynamic modeling module of the boiler soot blower control system for calculating the contamination degree by comparing the actual values of the pollution degree judgment factors inside the boiler with the reference values and determining the contamination degree of the soot blower according to the calculated contamination degree is disclosed.

However, since this type of soot blower control system can not calculate the contamination degree of a specific area in the boiler, it is difficult to effectively control the soot blower according to the contamination degree of each zone. Also, there is still a limitation that no consideration can be found for the economic benefits gained in operating the sootblower and the economic benefits gained in operating the sootblower.

(Patent Document 1) Japanese Laid-Open Patent Publication No. 2014-510250 (Apr. 24, 2014)

(Patent Document 2) Korean Patent Registration No. 10-0345501 (July 24, 2002)

It is an object of the present invention to provide a soot generating apparatus and a soot generating apparatus that divide a space inside a combustor into a plurality of compartments and detect whether soot is generated or adhered in each compartment and operate only the soot blower of the compartment in which the soot occurs, The soot can be removed, and in order to remove the soot in the structure of the soot blower, not only the physical force but also the chemical reaction using the additives makes it easy to remove the soot. When the soot is generated, And to provide a soot blower system and a control method thereof that can take economically more favorable measures through economical evaluation of a macro.

In order to achieve the above object, the present invention provides a combustor comprising: a combustor having a compartment which is an inner space partitioned into a plurality; A heat exchange pipe disposed inside the combustor; A plurality of soot blowers provided inside the combustor; A plurality of sensor units for sensing a temperature of the plurality of compartments; And a controller for controlling the soot blower by a predetermined method according to the temperature sensed by the sensor unit.

In addition, the soot blower may include a steam injection unit, and the control unit may control the steam injection unit according to a temperature sensed by the sensor unit.

In addition, the soot blower may further include an additive injection unit, and the control unit may control the additive injection unit in a predetermined manner according to the temperature sensed by the sensor unit.

The sensed temperature may include at least one of temperature of steam flowing inside the heat exchange pipe and temperature of gas flowing outside the heat exchange pipe.

Further, at least one of the steam injected from the steam injecting portion and the additive injected from the additive injecting portion may be injected into the partition.

In addition, any one or more of the plurality of compartments may be allocated to each soot blower, and steam may be supplied to the soot blower depending on the temperature sensed by the allocated compartment, One or more of which may be injected into the assigned partition.

In addition, the additive injected from the additive spraying portion may be sprayed and mixed on the path of the steam sprayed by the steam spraying portion.

In addition, the spray angle of the steam sprayer and the spray angle of the additive sprayer may be adjusted.

The control unit may include a heat-material balance calculation module, and the heat-material balance calculation module may calculate a heat-material balance value in a predetermined manner in real time using the temperature sensed by the sensor unit .

The control unit may further include a soot information calculation module and a soot position calculation module. The soot information calculation module calculates soot information in a predetermined manner in real time using the temperature sensed by the sensor unit, The position calculation module calculates the position of the soot in real time by using the position of the allocated partition corresponding to the position of the sensor unit that senses the temperature, and the soot information includes information about whether or not the soot is generated, the viscosity of the soot, Composition, and adhesion strength of the soot.

The control unit may further include a soot removal protocol calculation module, wherein the soot removal protocol calculation module is configured to calculate a soot removal protocol based on the soot information calculated in the soot information calculation module and the soot position calculated in the soot position calculation module, Wherein the soot removal protocol comprises: a flow rate of steam injected from the steam injector and a pressure of steam; And an amount of the additive injected from the additive injecting portion and an amount of the additive.

In addition, the control unit may further include an economical efficiency calculating module, and the economical efficiency calculating module estimates the amount of the additive based on the flow rate of the steam, the pressure of the steam, the type of the additive, Calculating a consumption cost value and a combustion efficiency value, converting the calculated combustion efficiency value into a combustion profit value by a predetermined method, subtracting the calculated consumption cost value from the converted combustion profit value, When the resultant value is less than or equal to a combustion profit value predicted when the calculated soot removal protocol is not executed, the soot blower may be controlled not to operate.

The control unit may further include a soot blower operating module, and the soot blower operating module may control the steam injecting unit and the additive injecting unit in real time according to the soot removing protocol calculated in the soot removing protocol calculating module have.

(A) the sensor unit is configured to control at least one of a temperature of steam flowing inside the heat exchange pipe and a temperature of a gas flowing outside the heat exchange pipe in real time ; (b) calculating a heat-material resin value in real time by a predetermined method using the temperature sensed by the sensor unit, and calculating a heat-material resin value by a predetermined method using the calculated heat- Computing a contamination factor value in real time; (c) comparing the calculated pollutant value with a preset reference pollutant value in real time; (d) if the computed contamination factor value exceeds the reference contamination factor value, computing the soot information in real time using a predetermined method using the sensed temperature; And (e) if the calculated contamination factor value exceeds the reference contamination factor value, the soot position calculating module uses the position of the allocated compartment corresponding to the position of the sensor portion at which the temperature is sensed, Wherein the soot information includes at least one of whether the soot is generated, the viscosity of the soot, the composition of the soot, and the adhesion strength of the soot.

After the step (e), (f) calculating a soot removal protocol in real time according to the calculated soot position and the calculated soot information; And (g) the soot blower operation module controls the soot blower according to the calculated soot removal protocol, wherein the soot removal protocol comprises: a flow rate of steam and steam pressure; And an amount of the additive injected from the additive injecting portion and an amount of the additive.

(F) after the step (f), (f1) the economics module calculates the flow rate of the steam, the pressure of the steam, the kind of the additive and the amount of the additive And calculating the combustion efficiency value by a predetermined method, and calculating the combustion profit value by using the calculated combustion profit value, And controlling the soot blower not to operate if the result of subtracting the calculated consumption cost value is equal to or lower than a combustion profit value predicted when the calculated soot removal protocol is not performed.

According to the present invention, after the inside of the combustor is divided into a plurality of sections, the soot is generated and adhered by using the temperature of each compartment detected by the sensor section, and then a soot blower allocated to the compartment corresponding to the area where the soot is generated Since the soot can be removed independently by controlling it, it is possible to reduce the power, steam and additives necessary for driving the soot blower while maintaining the soot removing performance.

In particular, since the injection of steam and the additive is controlled so as to optimize the removal of the soot by calculating the information of the soot, only the necessary amount of steam and additives are used, and the cost required for the soot removal work can be finely reduced.

Furthermore, even when a soot is generated, it is possible to convert and compare the economic benefits obtained when performing the soot removing operation and the unfinished operation, and by controlling so that the soot removing operation is not carried out separately It is possible to operate the combustor more economically by preventing excessive suet removal.

1 is a view showing an inner side of a combustor including a soot blower system according to an embodiment of the present invention.

2 is a cross-sectional view taken along line A-A 'of the combustor of FIG.

FIG. 3 is a view showing a soot blower and a sensor unit provided in the combustor of FIG. 1. FIG.

4 is a block diagram showing a configuration for controlling the soot blower system of FIG.

FIG. 5 is a flow chart showing a method in which the soot blower system of FIG. 1 is controlled.

Hereinafter, a soot blower system and a control method thereof according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1. Description of soot blower system

1 and 2, a soot blower system according to an embodiment of the present invention includes a combustor 10, a plurality of compartments 100, a heat exchange pipe 200, a soot blower 300, A sensor unit 400 and a control unit 500.

The combustor 10 is supplied with combustion gas and fuel from the outside, and combustion occurs therein. Heat generated by the combustion is discharged to the outside through a heat exchange process with a heat exchange pipe 200 to be described later.

In the illustrated embodiment, the shape of the combustor 10 is an arcuate shape with grooves in a portion, and can be formed with other structures in which combustion takes place and combustion heat can be exchanged.

(1) Description of the partitioning unit 100

The partition (100) divides a space inside the combustor (10). More specifically, the dividing section 100 refers to a virtual individual space for dividing the space inside the combustor 10 by a certain reference.

In the illustrated embodiment, the partition 100 is divided into a horizontal direction and a vertical direction, and each has a rectangular parallelepiped shape or a cubic shape, and can be formed in a different shape that can divide a space inside the combustor 10.

Alternatively, the partition 100 may be partitioned through a separate partition member (not shown), but in this case, it may interfere with the combustion and combustion gas flow in the combustor 10, Not shown).

The partitioning part (100) divides the space inside the combustor (10) into three dimensions. In other words, the dividing section 100 divides the space inside the combustor 10 in the lateral direction, the longitudinal direction, and the height direction, and the position of each of the dividing sections 100 can be expressed by a three-dimensional coordinate system or the like.

Since the inside of the combustor 10 is partitioned into the plurality of compartments 100, it is possible to accurately grasp the generation position and the degree of the soot in the compartment unit as described later, and to operate only the soot blower 300 assigned to the position where the soot is generated So that the suet can be efficiently removed. This will be described later.

(2) Description of Heat Exchanger Pipe (200)

The heat exchange pipe 200 is located inside the combustor 10 and a heat transfer medium (not shown), which can receive the heat of combustion generated in the combustor 10 and supply heat to the heat transfer pipe 200, flows therein. In one embodiment, the heat transfer medium is steam.

In one embodiment, the heat exchange tubing 200 is in the form of a tube, but the heat exchange tubing 200 is heat exchangable with the outside and may be provided in other forms .

In the illustrated embodiment, the heat exchange tubing 200 is formed in a cylindrical shape and may be provided in a different shape within which the heat transfer medium can flow. Further, the position where the heat exchange pipe 200 is disposed can be changed.

The outer surface of the heat exchange pipe (200) is exposed in the space inside the combustor (10). Therefore, the soot generated as a result of combustion inside the combustor 10 floats as fine particles in the combustion gas and is attached to the outer surface of the heat exchange pipe 200.

When the soot attached to the outer surface of the heat exchange pipe 200 is left as it is, heat exchange between the steam (heat transfer medium) flowing inside the heat exchange pipe 200 and the combustion gas flowing in the space inside the combustor 10 The temperature difference between the steam and the combustion gas is increased.

The soot blower system according to the embodiment of the present invention can determine whether a soot is generated by using a difference in temperature between steam and combustion gas. A detailed description of this process will be given later.

(3) Description of Soot Blower 300

The soot blower 300 is disposed inside the combustor 10 and injects an operating gas (at least one of steam or an additive) for removing the soot generated inside the combustor 10.

The soot blower 300 may be provided in any structure that can receive the operating gas from the outside of the combustor 10 and inject it into the combustor 10.

In the illustrated embodiment, the soot blower 300 is formed to penetrate through the wall 12 of the combustor 10 and, alternatively, the soot blower 300 may be provided in a retractable type.

3, the soot blower 300 includes a steam spraying unit 310, a steam supplying unit 320, an additive spraying unit 330, and an additive supplying unit 340.

1) Description of the steam spraying unit 310

The steam injector 310 injects steam for removing the soot formed inside the combustor 10. In the illustrated embodiment, the steam jetting unit 310 is provided in the form of a nozzle on one side of the soot blower 300, and may be provided as another structure at another position capable of jetting steam.

The steam spraying unit 310 receives steam from a steam supply unit 320 to be described later. The supplied steam is sprayed from the steam spraying portion 310 to remove the soot adhered to the outer surface of the wall 12 or the heat exchange pipe 200 inside the combustor 10.

In the illustrated embodiment, two steam injection portions 310 are provided on both sides, but the number of the steam injection portions 310 is variable.

The flow rate of the steam injected from the steam injecting section 310, the pressure of the steam, and the spraying angle of the steam can be controlled by the controller 500, which will be described later.

2) Description of the steam supply unit 320

In the illustrated embodiment, the steam supply unit 320 is located at the inward end of the combustor 10 of the soot blower 300 and receives steam from the outside of the combustor 10, and when the soot blower 300 is operated, (Not shown).

The steam supply unit 320 may be provided at another position capable of supplying steam to the steam injection unit 310 in a different structure and shape that can receive steam and supply the steam to the steam injection unit 310.

A steam spraying unit 310 is disposed on one side of the steam supply unit 320.

3) Description of the additive spraying unit 330

The additive injector 330 injects an additive for removing the soot formed inside the combustor 10. In the illustrated embodiment, the additive injector 330 is provided in the form of a nozzle adjacent the inner wall 12 of the combustor 10, and may be provided as a different structure at other locations capable of injecting the additive.

The additive spraying part 330 receives the additive from the additive supply part 340 to be described later. The supplied additive is injected in the additive injection part 330 to remove the soot adhering to the outer surface of the wall 12 or the heat exchange pipe 200 inside the combustor 10 through a physical or chemical reaction.

When the soot generated in the combustion chamber is strong, it is more effective to remove the soot by introducing an additive rather than removing the steam by injection, thereby inducing a chemical reaction.

In the illustrated embodiment, the number of the additive injecting parts 330 is two, and the number is variable.

The additive injected from the additive spraying part 330 can chemically react with the soot to remove the soot. Similar to the steam sprayed from the steam spraying unit 310, the soot can be removed by the physical force generated by the spraying pressure of the additive.

The kind of the additive injected in the additive injecting part 330, the amount of the additive, and the injecting angle of the additive can be controlled by the control part 500 to be described later, which will be described later.

4) Description of the additive supply unit 340

The additive supply unit 340 is disposed at a portion where the soot blower 300 is coupled to the wall 12 of the combustor 10 and receives the additive from the outside of the combustor 10, 0.0 > 330 < / RTI >

The additive supply part 340 may be provided at another position capable of supplying the additive to the additive spray part 330 in a different structure and shape that can be supplied with the additive and supplied to the additive spray part 330. [

An additive spraying part 330 is disposed on one side of the additive supply part 340. [

5) Description of the arrangement of the soot blower 300

Referring to FIG. 2, a plurality of soot blowers 300 are disposed on the wall 12 of the combustor 10. More specifically, assuming that the shape of the combustor 10 is circular, a plurality of soot blowers 300 are arranged along the wall 12 of the combustor 10 so as to face the center of the combustor 10.

At this time, the soot blower 300 may be disposed corresponding to the position of the partition 100 adjacent to the wall 12 of the combustor 10.

The soot blower 300 is also arranged in the height direction of the combustor 10. Specifically, the height direction of the combustor 10 is also divided by a plurality of compartments 100, and the soot blower 300 includes compartments 100 arranged along the height direction adjacent to the wall 12 of the combustor 10 As shown in FIG.

1, only one soot blower 300 is shown on one side of the wall 12 of the combustor 10, but this is for the sake of comprehension, when a plurality of soot blowers 300 are provided in the combustor 10 Are disposed along the wall 12.

The soot blower 300 may be assigned any one or more of the plurality of compartments 100. If it is determined that the soot is generated in the specific partition unit 100 through the soot generation determination process to be described later, only the soot blower 300 assigned to the partition unit 100 is operated to remove the soot. This will be described later.

The soot blower system according to the embodiment of the present invention divides the space inside the combustor 10 into a plurality of compartments 100 so that the soot blower 300 can be controlled according to the location of the soot However, it is preferable that the soot blower 300 is arranged corresponding to the position of the dividing section 100 in order to calculate a more precise position of the soot.

In the illustrated embodiment, the soot blower 300 is coupled to the wall 12 of the combustor 10.

6) Description of the spraying method of the soot blower 300

The steam and the additive injected from the soot blower 300 can be injected at a sufficient injection pressure to reach the center portion of the inner space of the combustor 10. [ Specifically, the soot blower 300 is provided along the wall 12 of the combustor 10, and can not reach the center of the inner space of the combustor 10 unless the steam and the additive are injected at a sufficient injection pressure.

In this case, even if the soot is generated at the central portion of the inner space of the combustor 10 through the process described later, the steam and the additive can not reach and the suet can not be removed.

Therefore, it is preferable that the steam spraying part 310 and the additive spraying part 330 are formed so as to provide a sufficient spray pressure to the sprayed steam and the additive.

The additive injected from the additive injecting section 330 may be provided in a liquid or solid phase. In the illustrated embodiment, the steam and the additive are injected independently in the steam jetting portion 310 and the additive jetting portion 33, respectively.

Alternatively, the spray mode can be changed according to the phase of the additive.

More specifically, when the additive is injected through the steam injecting portion 310, the inner wall of the steam injecting portion 310 and the steam storing portion 320 may be damaged by the additive. And is injected independently in the additive injection portion 330.

In the case where the additive is provided in a solid phase, the possibility that the inner wall of the steam injection part 310 and the steam storage part 320 are damaged is reduced. Therefore, the additive is mixed with the steam and is mixed with the steam injection part 310 and the steam storage part 320, respectively. In this case, a separate additive supply unit (not shown) for supplying the additive to the steam storage unit 320 may be provided.

The flow rate of steam, the pressure of steam and the angle of spray of steam injected from the steam injecting section 310, the type of the additive injected from the additive injecting section 330, the amount of the additive, and the injecting angle of the additive can be independently controlled have.

Accordingly, when the soot is generated, the steam spraying portion 310 and the additive spraying portion 330 are independently controlled according to the type, quantity, viscosity, composition, adhesion strength, and the like of the soot, so that the soot can be effectively removed. A detailed description thereof will be described later.

In the illustrated embodiment, the steam injected from the steam injecting portion 310 and the additive injected from the additive injecting portion 330 are mixed in the path toward the soot. More specifically, when steam is sprayed on the path from the steam spraying unit 310 to the soot, the additive is sprayed on the path to mix the steam and the additive before reaching the soot.

A mixture of steam and additive reaches the soot and removes the soot. At this time, not only the soot is removed by the physical force transmitted by the injection, but also the chemical reaction is generated by the additive, so that the soot can be chemically removed, so that a more effective soot removal is possible.

Further, since the additive is mixed with the steam to further increase the chemical reactivity with the soot, the soot can be removed more effectively than when the steam and the additive reach the soot, respectively.

At least one of the steam injected from the steam injecting unit 310 and the additive injected from the additive injecting unit 330 may be injected into at least one of the plurality of the dividing units 100. This will be described later.

(4) Description of the sensor unit 400

The sensor unit 400 is disposed inside the combustor 10 and senses the temperature of each of the compartments 100 that partition the space inside the combustor 10. In the illustrated embodiment, the sensor portion 400 is coupled to the wall 12 of the combustor 10.

The sensor unit 400 can sense the temperatures of all the compartments 100 in the combustor 10, respectively. For this, the sensor unit 400 may include an infrared temperature sensor capable of sensing a remote temperature.

In one embodiment, the sensor unit 400 senses the temperature of each compartment 100. This is for calculating the generation of soot or the attachment of soot in each of the dividing sections 100, which will be described later.

A plurality of sensor units 400 are provided and arranged on the wall 12 of the combustor 10. In one embodiment, the sensor portion 400 is disposed corresponding to the position of the compartment 100 or the soot blower 300, and is alternatively disposed regardless of the position of the compartment 100 or the soot blower 300 .

However, it is preferable that the sensor unit 400 is arranged to sense the temperature of all the spaces inside the combustor 10 regardless of the arrangement.

In one embodiment, the sensor portion 400 may sense one or more of the temperature of the steam flowing inside the heat exchange pipe 200 and the temperature of the gas flowing outside the heat exchange pipe 200. This is for calculating whether or not the soot is generated by using the difference between the temperature of the steam and the temperature of the gas, which will be described later.

The temperature sensed by the sensor unit 400 is transmitted to the control unit 500 to be described later to calculate whether or not the soot is generated and information of the soot through the calculation process in the control unit 500, Can be controlled.

(5) Description of the control unit 500

In the soot blower system according to the embodiment of the present invention, it is determined whether or not the soot is generated in any of the compartments 100 in the combustor 10 by using the temperature sensed by the sensor unit 400, Sole blower 300 can be controlled.

In addition, even if a soot is generated, it is possible to determine whether the soot blower 300 is operated by determining the cost required to operate the soot blower 300 and the gain obtained when removing the soot, as a monetary value.

That is, even if the soot occurs, the soot blower 300 is not immediately operated, but the soot blower 300 is operated and the economic gain obtained when the soot blower 300 is not operated is compared, The blower system can be operated.

In order to achieve the above object, the control unit 500 includes a heat-material balance calculation module 510, a soot information calculation module 520, a soot position calculation module 530, a soot removal protocol calculation module 540, Module 550 and a soot blower operating module 560. [

Hereinafter, the control unit 500 will be described in detail with reference to FIG.

1) Description of the heat-mass balance computation module 510

The heat-mass balance computing module 510 calculates the heat-mass balance using the temperature sensed by the sensor unit 400.

In one embodiment, the heat-mass resin is a concept comprising a thermal resin and a material resin. The material balance is the calculation of the exchange of material between the system and the boundary by the entry and exit of a substance in a process.

In addition, the thermal resin is a thermal resin that determines the heat and work supplied to a thermodynamic system of a boiler, a power plant, etc. according to the law of thermodynamics in a certain process, accumulates and externally works in any form and system, .

The temperature sensed by the sensor unit 400 is transmitted to the heat-mass balance computation module 510, and the heat-mass balance is calculated using the temperature difference of each partition 100.

In one embodiment, the sensor unit 400 measures at least one of the temperature of the steam flowing inside the heat exchange pipe 200 and the temperature of the gas flowing outside the heat exchange pipe 200. Preferably, both the temperature of the steam and the temperature of the gas can be measured.

If the difference between the temperature of the steam and the temperature of the gas is not large, it can be judged that the heat exchange is occurring well. In addition, since the heat exchange pipe 200 has no or little foreign substance on the surface of the heat exchange pipe 200 for heat exchange, it can be judged that the substance exchange is happening smoothly.

On the other hand, if the temperature difference of the steam and the gas is not large, it can be judged that heat exchange does not occur well. Further, if the heat exchange through the heat exchange pipe 200 is not performed well, a large amount of foreign matter is formed on the surface of the heat exchange pipe 200, so that it can be judged that the substance exchange is not smooth.

However, the calculated heat-mass balance value may vary depending on the position of the partition 100. For example, on the inlet side where steam flowing in the heat exchange pipe 200 flows, it is immediately before the heat exchange or just after the heat exchange is started, so that the temperature difference between the steam and the gas may be large.

On the other hand, the temperature difference between the steam and the gas may be small since heat exchange is sufficiently performed on the side of the outlet port through which the steam flowing in the heat exchange pipe 200 flows.

Accordingly, the heat-mass balance computation module 510 computes a contaminant factor value (Dirt factor) by applying a weight according to characteristics such as the position of each partition 100 to the calculated heat-material resin value.

The method of calculating the pollutant value may vary. In one embodiment, the lower the heat-mass balance value, the higher the value of the contaminant factor, and the higher the heat-mass balance value, the lower the value of the contaminant factor.

Once the contaminant factor value is calculated, the heat-material budget computation module 510 compares it to a predetermined reference contaminant factor value. At this time, the preset reference pollution factor value may be changed depending on various factors such as the combustion condition and the type of fuel. In one embodiment, the reference pollutant value may be calculated by the design of the combustor 10.

If the calculated contaminant factor value is less than or equal to the reference contaminant factor value, it is determined that the impurity has occurred within an allowable range, and the heat-mass balance computation module 510 determines that the heat- Value is calculated in real time, the pollutant factor value is calculated using the calculated value, and then the process of comparing the value with the reference pollutant value is repeated.

If the calculated contaminant factor value exceeds the reference contaminant factor value, the impurity is above the tolerance limit, so that the heat-mass balance computation module 510 calculates the heat- (520).

In another embodiment, the heat-mass balance computation module 510 uses the temperature of the steam and the temperature of the gas sensed by the sensor portion 400 to determine the temperature of the corresponding portion The argument value can also be calculated.

All of the above processes are performed in real time. That is, the temperature sensing in the sensor unit 400, the calculation of the heat-mass balance and the calculation of the pollution factor value, and the comparison between the calculated pollution factor value and the reference pollution factor value are performed in real time.

In addition, the heat-mass balance computation module 510 compares the computed contaminant value to a predetermined threshold contaminant value. In this case, when the combustor 10 is operated while the soot is present in the space inside the combustor 10, the preset threshold contamination factor value is determined by the degree of shortening of the life of the combustor 10 and the performance of the combustion process inside the combustor 10 And may be changed according to various factors such as the combustion condition and the type of the fuel.

When the calculated contamination factor value is equal to or higher than the critical pollution factor value, the soot blower 300 can be controlled to operate regardless of the result of the economics operation module 550 to be described later. This will be described later.

2) Description of suite information calculation module 520

When the contamination factor value calculated in the heat-and-mass balance computation module 510 exceeds the reference pollution factor value, it can be determined that a suit has occurred in the inner space of the combustor 10.

At this time, in order to effectively remove the generated soot, information about the soot, such as the composition of the soot, is required, and the soot information calculation module 520 calculates the soot information.

Specifically, the soot information calculation module 520 calculates the phase equilibrium of the fuel using the temperature sensed by each of the compartments 100, and determines whether or not the soot generated by the use of the soot is generated, the viscosity of the soot, And the adhesion strength of the soot.

To this end, the soot information calculation module 520 may further include a phase equilibrium information database (not shown) storing phase equilibrium information according to the type and temperature of the fuel to be injected.

The set information computed by the set information computation module 520 is transmitted to a set cancellation protocol computation module 540, which will be described later, and is utilized for computing an optimal protocol for removing the set. This will be described later.

3) Description of suit position calculation module 530

When the contamination factor value calculated in the heat-material balance computation module 510 exceeds the predetermined reference pollution factor value, it can be determined that a suit has occurred in the inner space of the combustor 10.

At this time, since it is necessary to judge to which partition section 100 the position of the soot belongs, so that the soot can be removed only by controlling the soot blower 300, information related to the location of the soot is required.

The soot position calculating module 530 calculates the dividing unit 100 corresponding to the position of the sensor unit 400, which senses the temperature, as the soot generating position. At this time, the position of the sensor unit 400 may indicate not only the physical position but also the position where the sensor unit 400 senses the temperature.

As described above, the sensor unit 400 can sense the temperature of each space portion inside the combustor 10 partitioned by the plurality of compartments 100, and the soot position calculation module 530 detects the temperature The dividing section 100 judged to have been caused to occur in the dividing section 100 is calculated as the soot generating position.

That is, the temperature of each partition 100 sensed by the sensor unit 400, and the soot information and the soot generation position calculated through the sensor unit 400 are mapped to the positions of the respective compartments 100 in the soot position calculation module 530 .

The calculated soot generating position is transmitted to the soot removing protocol calculating module 540 to be described later, and the soot removing protocol for removing the soot generated by operating the soot blower 300 allocated to the dividing unit 100 is calculated. The process will be described later.

4) Description of the soot removal protocol calculation module 540

The soot removal protocol computing module 540 computes the optimal protocol necessary for the soot removal according to the soot information calculated by the soot information computing module 520 and the soot position computed by the soot position computing module 530. Here, 'protocol' encompasses all methods for performing an objective under the input conditions.

Specifically, the soot removal protocol calculating module 540 calculates the soot information including the soot information calculated by the soot information calculating module 520, the composition of the soot, the adhesion strength of the soot, ) To receive the calculated position of the suit. And computes the optimal protocol for removing it.

The soot elimination protocol computed by the soot elimination protocol computing module 540 includes the flow rate of steam injected from the steam injecting section 310 of the soot blower 300, the pressure of the steam, the injection angle of the steam, Whether or not the injected injectant is injected, the kind of the additive, the amount of the additive, and the injection angle of the additive.

The soot removal protocol computed by the soot removal protocol computing module 540 is transmitted to the economizing efficiency computing module 550. After it is determined whether it is economically preferable to perform the soeting elimination protocol, And is used as control information for the soot blower 300 for removing the soot.

5) Description of economics calculation module 550

When the soot is generated in the space inside the combustor 10 during the operation of the combustor 10, there is a possibility that the heat exchange efficiency and the combustion efficiency are lowered.

Since the additive is generally expensive, if the soot is blown off by operating the soot blower 300 to spray the steam and the additive all together, it may be undesirable from the economical point of view.

In order to prevent this, there is a method of operating the soot blower 300 automatically at regular time intervals. However, since the soot is not generated and the characteristics of the soot are not reflected, it is difficult to effectively and economically remove the soot.

Therefore, it is preferable to determine whether or not the soot removal process is performed by controlling the soot blower 300 to operate only when the soot is generated, and by comparing the economical aspects of removing and removing the soot.

The economic efficiency calculation module 550 converts the cost required for the soot removal protocol calculated by the soot removal protocol calculation module 540 into the economic gain value and compares the cost gain value with the economic gain value And determines whether or not to execute the soot removal protocol.

Specifically, the economic efficiency calculation module 550 calculates a consumption cost value that is predicted according to the flow rate of steam and the pressure of steam required for performing the soot removal protocol, whether the additives are injected, the type of additive, .

In addition, the economics calculation module 550 converts the combustion efficiency value expected to be improved in performing the soot removal protocol into the combustion profit value which is an economic index.

The combustion profit value can be converted in various ways. In one example, the combustion benefit value may include a heat exchange amount or heat exchange efficiency raised by removing the soot, a reduction cost as the fuel and oxidant input amount is reduced, and the like, depending on the operation of the combustor 10 from which the soot is removed And may include costs associated with other benefits that can be obtained.

In this case, the combustion profit value corresponds to the gain obtained by performing the soot removal protocol, and the consumption cost value corresponds to the loss for performing the soot removal protocol. Therefore, the result obtained by subtracting the consumption cost value from the combustion profit value (Hereinafter referred to as "performance gain value") can be regarded as a total economic benefit obtained when the soot removal protocol is performed.

Also, the economics calculation module 550 calculates a combustion profit value (hereinafter, referred to as an "unperformed profit value") that is predicted when the soot removal protocol is not executed.

Specifically, since the soot removal protocol is not performed, the consumption cost value becomes zero.

In addition, the combustor 10 may continue to operate at the time of the uninstallation of the soot removal protocol, so that it may further include a cost related to other benefits that can be obtained according to the combustor operation 10 while the suits exist, such as heat exchange amount or heat exchange efficiency have.

However, in this case, since the combustor 10 is operated in the state where the soot is generated in the space inside the combustor 10, the combustion profit value may be lower than that when the soot is not generated.

The economics computation module 550 compares the computed two values. That is, the estimated profit profit value at the time of performing the cancellation protocol is compared with the unperformed profit value predicted at the time when the cancellation protocol is not executed.

As a result of the comparison, if the performance profit is less than or equal to the non-performance gain, the economics calculation module 550 determines that the soot removal protocol is not performed.

That is, if the performance profit value is less than the unperformed profit value, it is more profit to operate the combustor 10 while leaving the soot, so the soot blower 300 is not operated.

In addition, if the performance profit value and the unperformed profit value are equal to each other, the same benefit can be obtained even if the soot blower 300 is not operated. Therefore, the soot blower 300 may not be operated.

Therefore, the economics operation module 550 transfers control information that does not operate the soot blower 300 to the soot blower operation module 560.

If the performance profit value exceeds the unperformed profit value, it is more profitable to perform the soot removal protocol, so that the economics operation module 550 can control the soot blower operating module 560 .

6) Description of soot blower operating module 560

The soot blower operation module 560 controls the steam injecting portion 310 and the additive injecting portion 330 of the soot blower 300 independently and in real time.

When it is determined that the soot information and the soot removal protocol are calculated through the above-described processes and the economics operation module 550 performs the soot removal protocol, the partition calculation unit 530 ) Is transmitted to the soot blower operating module 560. [0050]

The soot blower operation module 560 controls the soot blower 300 according to the soot removal protocol calculated by the soot removal protocol operation module 540 so as to control the soot blower operation and the additive spraying part 330, The steam and additives are sprayed to remove the soot.

When the soot blower 300 performs all of the calculated soot removal protocols, the soot blower operation module 560 stops the operation of the soot blower 300.

When the economizer module 550 determines that the soot removal protocol is not to be executed, the soot blower operation module 560 does not operate the soot blower 300, Continue to work while still forming.

However, if the contamination factor value calculated in the heat-and-mass balance computation module 510 is equal to or greater than the critical contamination factor value, the soot blower operation module 560 may determine that the soot elimination protocol operation module It is possible to control the soot blower 300 according to the soot removal protocol calculated by the soot removal protocol. This will be described later.

2. Explanation of control method of soot blower system

Hereinafter, a control method of the soot blower system according to the embodiment of the present invention will be described with reference to FIG. The description of the overlapping portions of the modules 510, 520, 530, 540 and 550 will be omitted.

(1) Description of the step of sensing the temperature of the sensor unit 400

First, the sensor unit 400 senses at least one of the temperature of the steam flowing inside the heat exchange pipe 200 and the temperature of the gas flowing outside the heat exchange pipe 200 in real time. At this time, for more accurate soot generation detection, it is preferable to detect both the temperature of the steam and the temperature of the gas.

In addition, the sensor unit 400 can sense the temperature of each of the compartments 100 dividing the space inside the combustor 10 into a plurality of spaces.

The temperature of each compartment 100 sensed by the sensor unit 400 is transmitted to the heat-material resin computing module 510 and used to calculate the heat-material balance and the contaminant factor value.

(2) the heat-mass balance computing module (510) Resin value  And contamination The argument value  Description of the steps to compute

The thermal-material balance computing module 510 calculates the thermal-material resin values of each of the dividing sections 100 in real time using the temperature of each of the dividing sections 100 sensed by the sensor section 400, The contaminant factor values of each compartment 100 are calculated in real time using the heat-material resin values of the compartment 100. [

 (3) The heat-mass balance computation module 510 Computed  pollution Parameter value  Baseline contamination The argument value  Description of steps to compare

When the contamination factor value of each compartment 100 is calculated, the heat-material balance calculation module 510 compares this with the predetermined reference pollution factor value in real time.

If the calculated contaminant factor value is less than or equal to the reference factor value, it is determined that the impurity has occurred within an allowable range, and the heat-mass balance computation module 510 determines that the heat- And calculates a pollutant value using the calculated pollutant value, and then repeats the process of comparing the pollutant value with the reference pollutant value.

If the calculated contaminant factor value exceeds the reference contaminant factor value, the impurity is above the tolerance limit, so that the heat-mass balance computation module 510 calculates the heat- (520).

(4) Description of the step of the soot information calculation module 520 calculating the soot information

The soot information calculation module 520 calculates the phase equilibrium of the fuel using the temperature sensed by the sensor unit 400, and determines whether the soot generated by using the temperature is generated, the viscosity of the soot, the composition of the soot, In real time.

To this end, the soot information calculation module 520 may further include a phase equilibrium information database (not shown) storing phase equilibrium information according to the type of fuel to be injected and the temperature.

(5) Description of the step of calculating the soot position by the soot position calculation module 530

The soot position calculation module 530 calculates the soot position in real time by using the position of the allocated partition 100 corresponding to the position of the sensor unit 400 that senses the temperature.

Specifically, the soot position calculation module 530 calculates the contaminant factor value calculated by the heat-material resin calculation module 510 among the plurality of compartments 100 in which the sensor unit 400 sensed the temperature, The position of the dividing section 100 calculated as a large is calculated as the soot position.

(6) Soot  Removal protocol operation module 540 Soot  Description of steps to compute removal protocol

The soot removal protocol operation module 540 computes the soot removal protocol in real time according to the soot information calculated by the soot composition calculation module 520 and the soot position calculated by the soot position calculation module 530.

Specifically, the soot removal protocol calculation module 540 calculates the steam flow rate of the steam injected from the steam injecting portion 310 of the soot blower 300 and the pressure of the steam, The kind of the additive injected from the yarn 330 and the amount of the additive.

(7) Explanation of the process of calculating the economic efficiency by the economics calculation module 550

The economics calculation module 550 calculates a consumption cost value and a combustion efficiency value that are predicted when the calculated soot removal protocol is executed, converts the calculated combustion efficiency value into a combustion profit value, and calculates a consumption cost calculated from the converted combustion profit value The value is subtracted.

Also, when the result of subtracting the consumption cost value calculated from the converted combustion profit value is less than or equal to the combustion profit value predicted when the operated soot removal protocol is not performed, the economical efficiency calculation module 550 determines that the soot blower 300 is not operated .

If the result obtained by subtracting the consumption cost value calculated from the calculated combustion profit value exceeds the combustion profit value predicted at the time when the operated soot removal protocol is not executed, the economics calculation module 550 calculates the soot blower 300 so that the soot blower 300 is operated .

(8) Soot Blower  Operation module 560 Soot The blower 300  Description of steps to control

The soot blower operating module 560 controls the soot blower 300 according to the calculated soot removal protocol.

More specifically, when the economic efficiency calculation module 550 computes that it is economically advantageous to perform the computed soot removal protocol, the soot blower operation module 560 calculates the soot blower operating time according to the calculated soot removal protocol, So that the soot formed in the space inside the combustor 10 is removed.

When the soot blower 300 performs all of the calculated soot removal protocols, the soot blower operation module 560 stops the operation of the soot blower 300.

If the economic efficiency calculation module 550 computes that it is economically damaging to perform the calculated soot removal protocol, the soot blower operation module 560 does not perform the calculated soot removal protocol, Stop operation.

(9) Even when the economics computed by the economics computation module 550 is low Soot The blower 300  Explanation of operation

As described above, the economical efficiency calculation module 550 calculates and compares the economics at the time of executing the soot removal protocol computed by the soap removal protocol computing module 540 and the economics at the time of the uninstallation, And operates the soot blower 300 when the profit is high.

In some cases, however, the soot blower 300 may have to be operated even when the economic efficiency calculated by the economical efficiency calculating module 550 is low, for the life of the combustor 10 and stable operation.

The life of the combustor 10 may be shortened and the combustion process and the heat exchange process performed in the combustor 10 are not smoothly performed.

Therefore, even if some loss is predicted in terms of economy, a process of removing the suet is required, and a critical pollutant factor value can be set as a criterion for determining whether it is necessary.

The critical contamination factor value is set in consideration of the shortening of the life of the combustor 10 and the degree of efficiency of the combustion process and the efficiency of the heat exchange process when the combustor 10 is operated as it is in the soot generation condition .

If the contamination factor value calculated by the heat-and-resin computation module 510 is greater than or equal to the threshold value of the contamination factor, the soot blower operation module 560 does not operate the soot removal protocol operation module 540 regardless of the operation result of the economics operation module 550. [ The soot blower 300 is controlled according to the soot removal protocol calculated by the soot elimination protocol, and the soot formed in the space inside the combustor 10 is removed.

Of course, when the contamination factor value calculated by the thermal-resin calculation module 510 is less than the critical pollution factor value, the operation of the soot blower 300 can be determined according to the calculation result of the economics calculation module 550.

The soot blower system according to the embodiment of the present invention divides a space inside the combustor 10 into a plurality of compartments 100 and detects the temperature of each compartment 100 through the sensor unit 400, The soot can be removed by operating the soot blower 300 only when the soot is generated, by calculating the heat-matter resin value and the contaminant factor value by using the sensed temperature, so that unnecessary soot blower 300 can be reduced.

In addition, since the soot's viscosity, composition, adhesion strength, etc. can be predicted using the heat-mass balance value and the contaminant factor value, and the soot removal protocol can be calculated correspondingly, the steam and the additive can be custom- It is possible to remove the soot effectively.

Furthermore, even when the soot removal protocol is calculated, since the soot blower 300 is operated by determining the economy of the execution of the soot removal protocol calculated through the economic efficiency calculation and the economics at the time of the unexecution, It is possible to maximize the economic benefit of the operation of the combustor 10 because the soot removal protocol is not performed.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It can be understood that it is possible.

(Explanation of Symbols)

10: Combustor

12: Wall

100:

200: Heat exchange piping

300: soot blower

310: steam jetting section

320: Steam supply

330:

340: additive supplier

400:

500:

510: Heat-mass balance computing module

520: Set information calculation module

530: Suit position calculating module

540: Uninstall Protocol Operation Module

550: Economic efficiency calculation module

560: Soot blower operation module

Claims (16)

A combustor having a compartment which is an inner space partitioned into a plurality of compartments; A heat exchange pipe disposed inside the combustor; A plurality of soot blowers provided inside the combustor; A plurality of sensor units for sensing a temperature of the plurality of compartments; And And a control unit for controlling the soot blower in a predetermined manner according to the temperature sensed by the sensor unit. Soot blower system. The method according to claim 1, Wherein the soot blower includes a steam jetting portion, Wherein the control unit controls the steam injection unit according to a temperature sensed by the sensor unit, Soot blower system. 3. The method of claim 2, The soot blower further includes an additive jetting portion, Wherein the control unit controls the additive injection unit according to a temperature detected by the sensor unit, Soot blower system. The method of claim 3, The detected temperature may be, The temperature of the steam flowing inside the heat exchange pipe and the temperature of the gas flowing outside the heat exchange pipe. Soot blower system. The method of claim 3, Wherein at least one of the steam injected from the steam injecting portion and the additive injected from the additive injecting portion is injected into the partitioning portion, Soot blower system. 6. The method of claim 5, At least one of the plurality of compartments is assigned to each soot blower, Wherein at least one of the steam injected from the steam injecting part and the additive injected from the additive injecting part is injected into the allocated partition according to the temperature sensed by the allocated partitioning part, Soot blower system. The method according to claim 6, The additive injected from the additive spraying portion may include, A steam spraying unit for spraying steam on a path of steam, Soot blower system. 8. The method of claim 7, Wherein the injecting angle of the steam injecting part and the injecting angle of the additive injecting part are adjustable, Soot blower system. 8. The method of claim 7, The control unit includes a heat-material balance computing module, The heat-mass balance computing module comprises: And calculating a heat-material resin value in a predetermined manner in real time using the temperature sensed by the sensor unit, Soot blower system. 10. The method of claim 9, The control unit may further include a soot information calculation module and a soot position calculation module, The set information calculation module includes: And a controller configured to calculate the set information in real time based on the temperature sensed by the sensor unit, The soot position calculating module includes: Calculates the soot position in real time using the position of the allocated partition corresponding to the position of the sensor unit that senses the temperature, The set information includes: And the adhesion strength of the soot, the viscosity of the soot, the composition of the soot, and the adhesion strength of the soot, Soot blower system. 11. The method of claim 10, The control unit may further include a soot removal protocol operation module, The soot removal protocol operation module includes: Calculating a soot removal protocol in real time based on the soot information calculated in the soot information calculation module and the soot position calculated in the soot position calculation module, Wherein the de- A flow rate of steam injected from the steam injector and a pressure of steam; And The kind of the additive injected from the additive injecting portion and the amount of the additive; Soot blower system. 12. The method of claim 11, The control unit may further include an economics calculation module, The economics calculation module includes: Calculating a consumption cost value and a combustion efficiency value predicted according to the flow rate of the steam, the pressure of the steam, the type of the additive, and the amount of the additive at the time of executing the calculated soot removal protocol, Converting the calculated combustion efficiency value into a combustion profit value by a predetermined method, If the result of subtracting the calculated consumption cost value from the converted combustion profit value is less than or equal to a combustion profit value predicted when the calculated soot removal protocol is not performed, And controls so that the soot blower is not operated. Soot blower system. 13. The method of claim 12, Wherein the control unit further comprises a soot blower operating module, The soot blower operating module includes: And controlling the steam spraying unit and the additive spraying unit in real time according to the soot removal protocol calculated by the soot removal protocol calculating module. Soot blower system. A method for controlling a soot blower system according to claim 3, (a) sensing in real time at least one of a temperature of steam flowing through the heat exchange pipe and a temperature of a gas flowing outside the heat exchange pipe; (b) calculating a heat-material resin value in real time by a predetermined method using the temperature sensed by the sensor unit, and calculating a heat-material resin value by a predetermined method using the calculated heat- Computing a contamination factor value in real time; (c) comparing the calculated pollutant value with a preset reference pollutant value in real time; (d) if the computed contamination factor value exceeds the reference contamination factor value, computing the soot information in real time using a predetermined method using the sensed temperature; And (e) if the calculated contamination factor value exceeds the reference contamination factor value, the soot position calculating module calculates the soot position using the position of the allocated compartment corresponding to the position of the sensor unit in which the temperature is sensed ; ≪ / RTI > The set information includes: And the adhesion strength of the soot, the viscosity of the soot, the composition of the soot, and the adhesion strength of the soot, Control method of soot blower system. 15. The method of claim 14, After the step (e) (f) calculating a soot removal protocol in real time based on the calculated soot position and the calculated soot information; And (g) the soot blower operation module controls the soot blower in accordance with the calculated soot removal protocol, Wherein the de- A flow rate of steam injected from the steam injector and a pressure of steam; And The kind of the additive injected from the additive injecting portion and the amount of the additive; Control method of soot blower system. 16. The method of claim 15, After step (f) and before step (g) (f1) The economics module calculates a consumption cost value and a combustion efficiency value according to the flow rate of the steam, the pressure of the steam, the type of the additive, ), And calculates one or more of Converting the calculated combustion efficiency value into a combustion profit value by a predetermined method, And controlling the soot blower to be inoperative if the result of subtracting the calculated consumption cost value from the converted combustion profit value is equal to or lower than a combustion profit value predicted when the calculated soot removal protocol is not performed , Control method of soot blower system.

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