CN207815299U - A kind of power economized boiler using fuel gas second-time burning heating cold air - Google Patents

Abstract

The utility model discloses a kind of power economized boilers using fuel gas second-time burning heating cold air, including furnace body, furnace interior is equipped with inlet chamber successively from top to bottom, secondary combustion chamber, outlet chamber and burner hearth, the bottom of burner hearth is equipped with fire grate, burner hearth is separated into combustion chamber and cinder room by fire grate, several mud holes are uniformly equipped on the side wall of cinder room, the bottom of combustion chamber is equipped with air-jet device, the top of combustion chamber is equipped with heater box, the top perforation connection exhaust smoke hole of secondary combustion chamber, the inner cavity of exhaust smoke hole is equipped with third filter layer successively from top to bottom, second filter layer and the first filter layer, several heat-exchange tubes are uniformly equipped in second-time burning room；The utility model utilizes secondary combustion chamber, so that the flue gas generated in combustion chamber is mixed with mist of oil carries out second-time burning, the heat that burning generates preheats the cold air in heat-exchange tube, it not only saves cold air and enters burning indoor heating time and heating heat, and make full combustion of fuel, it increases operation rate.

Description

An energy-saving boiler that uses combustible gas secondary combustion to heat cold air

technical field

The utility model relates to the field of boiler equipment, in particular to an energy-saving boiler which uses combustible gas for secondary combustion to heat cold air.

Background technique

Boiler is a kind of energy conversion equipment. Fuel is put into the boiler, and high-temperature water with certain heat energy is output. The hot water generated in the boiler can directly provide the required heat energy for industrial production and people's life, and is widely used in people's daily life. . The original meaning of the pot refers to the water container heated on the fire, and the furnace refers to the place where fuel is burned. The boiler includes two parts: the pot and the furnace. The hot water or steam generated in the boiler can directly provide the required heat energy for industrial production and people's life, and can also be converted into mechanical energy through a steam power device, or converted into electrical energy through a generator. Boilers that provide hot water are called hot water boilers, which are mainly used in daily life, and also have a small amount of application in industrial production. Boilers that generate steam are called steam boilers, often referred to simply as boilers, and are mostly used in thermal power stations, ships, locomotives, and industrial and mining enterprises.

The structure of traditional boilers is relatively simple. The high-temperature flue gas from fuel combustion has a very short flow in the boiler. Only a part of the heat energy is absorbed, and most of the heat energy is directly discharged into the air. The heat energy utilization rate is only about 40%. Moreover, the existing boiler fuel is generally coal or gas, the combustion effect is poor, and the fuel combustion is insufficient, which will produce a large amount of flammable gases such as carbon monoxide. The air is seriously polluted, and the smoke and dust emitted usually contain a lot of waste heat, which will cause thermal pollution.

Utility model content

The purpose of this utility model is to provide an energy-saving boiler that utilizes combustible gas secondary combustion to heat cold air, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

An energy-saving boiler that uses combustible gas secondary combustion to heat cold air, including a furnace body. The interior of the furnace body is provided with an inlet cavity, a secondary combustion chamber, an air outlet cavity, and a furnace in sequence from top to bottom. The bottom of the furnace is equipped with a grate The grate divides the furnace into a combustion chamber and a cinder chamber. The cinder chamber is located below the combustion chamber. A number of slag discharge holes are evenly arranged on the side wall of the cinder chamber. The bottom of the combustion chamber is equipped with an air injection device. There is a heating box, and a number of smoke exhaust pipes are evenly arranged on the heating box. The smoke exhaust pipes are connected to the upper and lower end faces of the heating box. One side of the heating box is connected to the water inlet pipe. The water pump is arranged on the water inlet pipe. One end is connected through the outlet pipe, and the outlet pipe is provided with a control valve. The middle part of the side wall of the combustion chamber is provided with a pulverized coal nozzle and a first electronic ignition device, and the pulverized coal nozzle is located below the first electronic ignition device. The inlet end of the pulverized coal nozzle is connected to the pulverized coal supply pipe, the combustion chamber is connected to the secondary combustion chamber through the communication hole, the gas outlet chamber is set outside the communication hole, the gas outlet chamber is connected to the air injection device through the air pipe, and the secondary combustion chamber One side wall is provided with a fuel injector and a second electronic ignition device. The fuel injector is located below the second electronic ignition device. The oil inlet end of the fuel injector is connected to the oil supply pipe. The exhaust hole is connected through the smoke exhaust hole. The inner cavity of the smoke exhaust hole is provided with the third filter layer, the second filter layer and the first filter layer in sequence from top to bottom. The air intake cavity is set outside the smoke exhaust hole. There are several heat exchange tubes, one end of the heat exchange tube is connected to the air intake cavity, the other end of the heat exchange tube is connected to the air outlet cavity, and one end of the intake cavity is connected to the intake tube.

As a further technical solution of the utility model, a deflector is provided in the center of the bottom wall of the cinder chamber, and the deflector is a conical plate.

As a further technical solution of the utility model, 2 to 3 slag discharge holes are uniformly arranged on the side wall of the cinder chamber.

As a further technical solution of the utility model, the air injection device has an annular structure, and a number of air injection nozzles are uniformly arranged on the wall of the inner hole of the air injection device.

As a further technical solution of the utility model, the first filter layer is a dust filter, the second filter layer is an activated carbon layer, and the third filter layer is a desulfurization layer.

As a further technical solution of the utility model, the air inlet cavity is an annular cavity.

As a further technical solution of the utility model, a fan is provided on the air intake pipe.

Compared with the prior art, the utility model utilizes the secondary combustion chamber, so that the flue gas generated in the combustion chamber is mixed with the oil mist for secondary combustion, and the heat generated by the combustion preheats the cold air in the heat exchange tube, which not only saves The heating time and heat of the cold air entering the combustion chamber can fully burn the fuel, improve the utilization rate of the fuel, and reduce energy consumption; the smoke generated by the combustion is discharged from the smoke exhaust hole, and passes through the first filter layer, the second filter layer and The third filter layer, filter layer by layer, removes harmful substances in the smoke, thereby reducing the impact of smoke on air quality.

Description of drawings

Fig. 1 is a structural schematic diagram of an energy-saving boiler utilizing combustible gas secondary combustion to heat cold air of the utility model;

Fig. 2 is a structural schematic diagram of an air injection device of an energy-saving boiler using combustible gas secondary combustion to heat cold air according to the present invention.

In the figure: 1-furnace body, 2-secondary combustion chamber, 3-furnace hearth, 4-fire grate, 5-combustion chamber, 6-cinder chamber, 7-deflector, 8-slag discharge hole, 9-air injection device , 10-air nozzle, 11-coal powder nozzle, 12-coal powder supply pipe, 13-first electronic ignition device, 14-heating box, 15-exhaust pipe, 16-water inlet pipe, 17-water pump, 18- Water outlet pipe, 19-control valve, 20-communication hole, 21-air outlet chamber, 22-air pipe, 23-intake chamber, 24-heat exchange pipe, 25-fuel injector, 26-oil supply pipe, 27-second Electronic ignition device, 28-intake pipe, 29-fan, 30-exhaust hole, 31-first filter layer, 32-second filter layer, 33-third filter layer.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In describing the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention. Novel and simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the utility model. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention through specific situations.

The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

Please refer to Figures 1-2, an energy-saving boiler that utilizes secondary combustion of combustible gas to heat cold air, including a furnace body 1, which is provided with an air intake chamber 23 and a secondary combustion chamber 2 from top to bottom. , the air outlet cavity 21 and the furnace 3, the bottom of the furnace 3 is provided with a grate 4, the grate 4 divides the furnace 3 into a combustion chamber 5 and a cinder chamber 6, and the cinder chamber 6 is located below the combustion chamber 5 , the center of the bottom wall of the cinder chamber 6 is provided with a deflector 7, the deflector 7 is a conical plate, and the side wall of the cinder chamber 6 is uniformly provided with some slag discharge holes 8, and the combustion chamber 5 Bottom is provided with air injection device 9, and described air injection device 9 is annular structure, is evenly provided with some air nozzles 10 on the inner hole wall of air injection device 9, and the top of described combustion chamber 5 is provided with heating box 14, and described heating box 14 is uniformly provided with a number of exhaust pipes 15, the exhaust pipes 15 are connected to the upper and lower end surfaces of the heating box 14, and one side of the heating box 14 is connected to the water inlet pipe 16, and the water inlet pipe 16 is provided with A water pump 17, the other side end of the heating box 14 is connected through a water outlet pipe 18, the water outlet pipe 18 is provided with a control valve 19, the middle part of the side wall of the combustion chamber 5 is provided with a pulverized coal nozzle 11 and a first Electronic igniter 13, described pulverized coal nozzle 11 is located at the below of first electronic igniter 13, and the inlet end of pulverized coal nozzle 11 connects pulverized coal supply pipe 12 through, and described combustion chamber 5 is connected with two through communication hole 20. The secondary combustion chamber 2 is connected through, and the outlet chamber 21 is arranged on the outside of the communication hole 20, and the outlet chamber 21 is connected with the air injection device 9 through the air pipe 22, and the side wall of the secondary combustion chamber 2 is provided with an oil nozzle. 25 and the second electronic igniter 27, the fuel injector 25 is located below the second electronic igniter 27, the oil inlet end of the injector 25 connects with the oil supply pipe 26, the secondary combustion chamber 2 The top of the smoke exhaust hole 30 is connected through through, and the inner cavity of the smoke exhaust hole 30 is provided with a third filter layer 33, a second filter layer 32 and a first filter layer 31 in sequence from top to bottom, and the first filter layer 31 It is a dust filter net, the second filter layer 32 is an active carbon layer, the third filter layer 31 is a desulfurization layer, and the air inlet chamber 23 is an annular chamber, and the air inlet chamber 23 is arranged on the outside of the exhaust hole 30, so A number of heat exchange tubes 24 are uniformly arranged in the secondary combustion chamber 2, one end of the heat exchange tube 24 is connected to the air intake cavity 23, and the other end of the heat exchange tube 24 is connected to the air outlet cavity 21. One side end of 23 is connected to the air inlet pipe 28 through, and the fan 29 is arranged on the air inlet pipe 28 .

When the utility model is used, the pulverized coal is burned in the combustion chamber 5, the heating box 14 is heated, and the combustible gas such as carbon monoxide produced by the pulverized coal combustion enters the secondary combustion chamber 2 through the communication hole 21 along with the smoke and dust, and mixes with the oil mist Carry out secondary combustion, the heat generated by combustion preheats the air in the heat exchange tube 24, which not only saves the heating time and heating heat for the cold air entering the combustion chamber 5, but also makes the fuel fully combustible, improving the utilization rate of the fuel, Reduce energy consumption; the smoke generated by combustion is discharged from the smoke exhaust hole 30, and successively passes through the first filter layer 31, the second filter layer 32 and the third filter layer 33, and is filtered layer by layer to remove harmful substances in the smoke, thereby reducing smoke. impact on air quality.

The preferred implementation of this patent has been described in detail above, but this patent is not limited to the above-mentioned implementation. Within the scope of knowledge possessed by those of ordinary skill in the art, various modifications can be made without departing from the purpose of this patent. kind of change.

Claims (7)

1. a kind of power economized boiler using fuel gas second-time burning heating cold air, which is characterized in that including furnace body, in furnace body Portion is equipped with inlet chamber, secondary combustion chamber, outlet chamber and burner hearth successively from top to bottom, and the bottom of burner hearth is equipped with fire grate, and fire grate is stove Thorax is separated into combustion chamber and cinder room, and cinder room is located at the lower section of combustion chamber, several rows are uniformly equipped on the side wall of cinder room The bottom of cinder hole, combustion chamber is equipped with air-jet device, and the top of combustion chamber is equipped with heater box, several rows are uniformly equipped in heater box Smoke pipe, the upper and lower end face of smoke exhaust pipe perforation connection heater box, the side perforation connection water inlet pipe of heater box, water inlet pipe are equipped with Water pump, another side perforation connection outlet pipe of heater box, outlet pipe are equipped with control valve, are equipped in the middle part of the one side wall of combustion chamber Coal nozzle and the first electronic lighter, coal nozzle are located at the lower section of the first electronic lighter, the import of coal nozzle End perforation connection coal dust supply pipe, combustion chamber are connected by intercommunicating pore and secondary combustion chamber perforation, and outlet chamber is located at intercommunicating pore Outside, outlet chamber are connected by tracheae and air-jet device perforation, and the one side wall of secondary combustion chamber is equipped with atomizer and the second electricity Sub- ignition device, atomizer are located at the lower section of the second electronic lighter, and the oil inlet end perforation connection fuel feed pump of atomizer is secondary The top perforation connection exhaust smoke hole of combustion chamber, the inner cavity of exhaust smoke hole is equipped with third filter layer, the second filter layer successively from top to bottom With the first filter layer, inlet chamber is located at the outside of exhaust smoke hole, several heat-exchange tubes, heat exchange is uniformly equipped in second-time burning room One end perforation connection inlet chamber of pipe, the other end perforation connection outlet chamber of heat-exchange tube, the side perforation connection of inlet chamber Air inlet pipe.

2. a kind of power economized boiler using fuel gas second-time burning heating cold air according to claim 1, feature It is, the bottom wall center of cinder room is equipped with deflector, and deflector is circular cone plate.

3. a kind of power economized boiler using fuel gas second-time burning heating cold air according to claim 1, feature It is, 2~3 mud holes is uniformly equipped on the side wall of cinder room.

4. a kind of power economized boiler using fuel gas second-time burning heating cold air according to claim 1, feature It is, air-jet device is loop configuration, and several air nozzles are uniformly equipped on the inner hole wall of air-jet device.

5. a kind of power economized boiler using fuel gas second-time burning heating cold air according to claim 1, feature It is, the first filter layer is dirt filtrating screen, and the second filter layer is active carbon layer, and third filter layer is desulfurization layer.

6. a kind of power economized boiler using fuel gas second-time burning heating cold air according to claim 1, feature It is, inlet chamber is annular chamber.

7. a kind of power economized boiler using fuel gas second-time burning heating cold air according to claim 1, feature It is, air inlet pipe is equipped with wind turbine.