KR20090086820A - Increasing apparatus of boiler capacity using superheated vapor - Google Patents

Abstract

The present invention relates to a boiler capacity increasing apparatus using superheated steam, comprising: a steam capacity increasing unit (120) connected to a high temperature steam discharge pipe (110) of the boiler (100) for generating a superheated steam; A water supply pipe 130 for supplying water to the steam capacity increasing unit 120; It includes a pump 140 for spraying the water supplied to the water supply pipe 130 in the form of a mist through the nozzle 134 connected to the end of the water supply pipe 130, the boiler for generating high temperature superheated steam The output capacity is increased.

Description

Increasing Apparatus of Boiler Capacity using Superheated Vapor

The present invention relates to a boiler capacity increasing apparatus using superheated steam, and more particularly, to a boiler capacity increasing apparatus for increasing the output capacity of a boiler generating high temperature superheated steam.

A boiler is a device that generates steam having high temperature and pressure by transmitting combustion heat of fuel to water. Such a boiler is used to supply steam to a steam engine such as a thermal power plant or a ship, or to work or heating devices of various factories.

Moreover, boilers are divided into several types in structure. Among them, once-through boilers, which correspond to forced circulation boilers, are boilers of pipes made by bending water pipes and long pipes. It is a type of boiler that feeds water from one end, pumps it, and heats, evaporates, and overheats it in turn, and sends superheated steam from the other end of the pipe. Perfusion boilers are suitable for the generation of high pressure steam, and especially in the case of supercritical pressure boilers.

Generally, when the pressure is kept constant and the liquid is heated, the temperature rises, and when it reaches a certain temperature, it starts to evaporate. In this case, even if it is heated again, the temperature does not change until all evaporates and liquid and vapor coexist. This is called wet saturated steam, and what has become all steam is called dry saturated steam. When the dry saturated steam is heated again, the temperature of the steam rises, which is called superheated vapor. Using this steam can improve the efficiency of boilers, engines or turbines.

Furthermore, superheated steam is a hot, colorless, transparent gas of 100 ° C. or higher produced by heating the steam generated by boiling water without applying pressure. Heat transfer by air is limited to convective heat, but superheated steam is highly effective in cooking food due to high heat efficiency by radiating heat and condensation heat. In general, in the case of convective heat transfer, the heat transfer rate of superheated steam is about 10 times faster than that of heating air. In particular, by heat treatment in a low oxygen state, oxidation and combustion of the heated object can be suppressed. In addition, a general superheater produces a steam of 183.3 ° C. under a pressurized pressure of 10 kg / cm 3 G, and typically produces a steam of 170 ° C. at 7-8 kg / cm 3 G.

On the other hand, in order to produce low-pressure superheated steam, there is a method of directly heating the first heated steam with a burner or indirectly heating the heat storage material using a heater and an electromagnetic induction heating method.

As a steam generator for generating such superheated steam, Patent Application No. 2004-0054539 (perfusion boiler), to which the applicant has applied for a patent, has a device for generating high-temperature superheated steam of low pressure. It is a one-piece structure that heats and reheats with a single burner by installing a spiral superheater in the combustion chamber of the boiler. .

The present invention is to provide a boiler capacity increasing apparatus using the superheated steam to increase the capacity of the boiler by spraying water to a high temperature superheated steam of a certain capacity generated in a conventional boiler, in particular, a once-through boiler. The purpose is to.

Boiler capacity increasing apparatus using the superheated steam of the present invention for achieving the above object, the boiler for generating a superheated steam, the steam capacity increasing unit connected to the hot steam discharge pipe of the boiler; A water supply pipe for supplying water to the steam capacity increasing part; It characterized in that it comprises a pump for spraying the water supplied to the water supply pipe in the form of a mist through a nozzle connected to the end of the water supply pipe.

The present invention is to increase the overall capacity of the boiler by spraying water to the hot superheated steam generated from the boiler, without adding a separate boiler to the boiler generating a steam of a predetermined capacity, thereby increasing the operating efficiency of the boiler, It is effective in minimizing the installation cost and maintenance cost of the boiler against the capacity of the basic boiler.

Hereinafter, with reference to the accompanying drawings, described in detail with respect to the boiler capacity increasing apparatus using superheated steam as follows.

1 is a view showing the configuration of a boiler capacity increasing apparatus using the superheated steam of the present invention, Figure 2 is a cross-sectional view.

First, the present invention is to increase the amount of superheated steam of a boiler having a certain capacity, by installing a device capable of increasing the capacity in the high temperature steam discharge pipe of the boiler, water to the high temperature superheated steam generated from one boiler By spraying to increase the overall capacity of the boiler.

The hot steam discharge pipe 110 is discharged from the perfusion boiler 100 via the control valve 112, and the hot steam discharged from the hot steam discharge pipe 110 is used for sludge or waste treatment, reprocessing of combustion gas, or the like. It is also used for cooking or heating food. At this time, the steam discharged from the high temperature steam discharge pipe 110 is a high-temperature steam of several hundred degrees or more, it is used directly by spraying the steam to the object of use or lowering the temperature to a low temperature steam of a predetermined temperature or less.

The steam capacity increasing unit 120 is connected to the high temperature steam discharge pipe 110 of the boiler 100 on one side, and the steam capacity increasing unit 120 is formed in a cylindrical or polyhedral space with a predetermined capacity and is insulated as a metal material. It would be desirable to process 124. In addition, the vapor capacity increasing unit 120 is provided with a plurality of partition walls 122 capable of partitioning the space. The other side of the steam capacity increasing unit 120 is connected to the low temperature steam discharge pipe 150 through which low temperature steam is discharged.

The water supply pipe 130 supplies water into the steam capacity increasing part 120 and is connected to a plurality of sides from the outer circumference of the side of the steam capacity increasing part 120. Furthermore, the water supply pipe 130 is preferably connected between the partition wall 122 partitioned in the steam capacity increasing portion 120.

The water supply pipe 130 is installed penetrating through the outer periphery of the side of the steam capacity increasing unit 120, the nozzle 134 is provided at the end of the water supply pipe 130 is inserted through the steam capacity increasing unit 120. The nozzle 134 is for spraying water introduced through the water supply pipe 130 in the form of a mist. The outlet of the nozzle 134 is one or more outlets having a diameter through which water particles can be sprayed in the form of mist. Will be formed.

The pump 140 is to spray the water supplied to the water supply pipe 130 in the form of a mist through the nozzle 134 connected to the end of the water supply pipe 130, the pump 140 to the water supply pipe 130 It is to pressurize the water to be above a certain pressure. When the water supplied to the water supply pipe 130 is above a predetermined pressure, the configuration of the pump 140 may be omitted, but the degree of pressurization of the pump 140 is adjusted to adjust the capacity of the steam discharged from the boiler 100. It is desirable to be able to. In addition, the control valve 142 may be connected to the water supply pipe 130 connected to the front or rear end of the pump 140 or the steam capacity increasing unit 120 to adjust the amount of water supplied to the steam capacity increasing unit 120.

The present invention is to insulate the heat capacity with a heat insulator to prevent the temperature of the superheated steam in the hot steam discharge pipe 110, the water supply pipe 130, the water supply pipe 130 and the low temperature steam discharge pipe 150 to reduce the stepless. Would be desirable. The control valve 152 may be adopted in the low temperature steam discharge pipe 150 to adjust the superheated steam discharged from the low temperature steam discharge pipe 150.

The operation of the boiler capacity increasing apparatus using the superheated steam according to the present invention made as described above will be described.

When a high temperature superheated steam is generated from the boiler 100 for discharging a predetermined amount of steam, the superheated steam is discharged from the hot steam discharge pipe 110 connected to the boiler 100 to the steam capacity increasing unit 120. At this time, the high temperature superheated steam is temporarily expanded in the steam capacity increasing unit 120. The water pressurized by the pump 140 is sprayed in the form of mist through the nozzle 134 fixedly installed in the steam capacity increasing unit 120 along the water supply pipe 130. The steam capacity increasing unit 120 is provided with a plurality of partitions 122 so that the high temperature superheated steam discharged from the high temperature steam discharge pipe 110 is sprayed from the nozzle 134 between the partition walls 122 while passing through the partition wall 122. The water turns into superheated steam at low temperature. And the low temperature superheated steam changed in the steam capacity increasing unit 120 will increase the amount.

For example, in the case of the boiler 100 producing a high temperature superheated steam of 500 ° C. or more through the high temperature steam discharge pipe 110 at a capacity of 30 Kg per hour, the hot superheated steam discharged through the high temperature steam discharge pipe 110 and the water supply pipe The water sprayed from the nozzle 134 is mixed through the 130 to combine the low temperature superheated steam, thereby creating an increased superheated steam. That is, when the superheated steam of 30Kg per hour in the boiler, if the water supplied through the water supply pipe 130 is 30Kg per hour, the superheated steam of 60Kg per hour through the cold steam discharge pipe 150 of the steam capacity increasing unit 120 is discharged Will be.

Therefore, the steam capacity increasing unit 120 according to the amount of water introduced through the high temperature superheated steam introduced from the high temperature steam discharge pipe 110 and the water supply pipe 130 or the volume of the steam capacity increasing unit 120 according to the low temperature steam discharge pipe ( The amount of superheated steam released through 150 will be controlled.

In this way, the superheated steam discharged through the high temperature steam discharge pipe 110 in the boiler 100 is not only a temperature control depending on the amount of water introduced through the water supply pipe 130 into the steam capacity increasing unit 120, but also a low temperature steam discharge pipe ( The amount of superheated steam released through 150 will be adjusted respectively.

Therefore, the boiler capacity increasing apparatus using the superheated steam of the present invention sprays water to the hot superheated steam discharged from the boiler 100 without installing a separate boiler to increase the capacity of the boiler 100 having a predetermined capacity. It can generate superheated steam over temperature and capacity, so it is possible to change the boiler capacity and control the temperature.

In addition, the control valves 112, 142 and 152 of the present invention may be electronically controlled to automatically adjust the amount of superheated steam discharged from the low temperature steam discharge pipe 150.

While the invention has been shown and described in connection with specific embodiments thereof, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who has a can easily know.

1 is a configuration diagram showing a boiler capacity increasing apparatus using superheated steam as an embodiment according to the present invention.

2 is a cross-sectional view of a boiler capacity increasing apparatus using the superheated steam of the present invention.

♣ Explanation of symbols for main part of drawing ♣

100: boiler 110: high temperature steam discharge pipe

112, 142, 152: control valve 120: steam capacity increase

122: partition 124: insulation

130: water supply pipe 134: nozzle

140: pump 150: low temperature steam discharge pipe

Claims (2)

In a boiler that generates superheated steam, Steam capacity increasing unit 120 connected to the high temperature steam discharge pipe 110 of the boiler 100; A water supply pipe 130 for supplying water to the steam capacity increasing unit 120; Boiler capacity increase using superheated steam, characterized in that it comprises a pump 140 for spraying the water supplied to the water supply pipe 130 in the form of a mist through the nozzle 134 connected to the end of the water supply pipe 130 Device. The method of claim 1, Boiler capacity increasing apparatus using superheated steam, characterized in that a plurality of partition wall 122 is installed in the steam capacity increasing unit (120).

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