CN114484462A

CN114484462A - Anti-corrosion waste incineration boiler superheater system

Info

Publication number: CN114484462A
Application number: CN202210274210.4A
Authority: CN
Inventors: 姚凯杰; 顾建邦; 谭冰
Original assignee: Cixi Zhongke Zhongmao Environmental Thermal Power Co ltd
Current assignee: Cixi Zhongke Zhongmao Environmental Thermal Power Co ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-05-13

Abstract

The invention relates to an anti-corrosion superheater system of a waste incineration boiler, which relates to the field of waste incineration technology and comprises a boiler body, a smoke outlet pipe fitting, a first air blowing device and superheater equipment, wherein the first air blowing device and the superheater equipment are positioned on the smoke outlet pipe fitting, one end of the smoke outlet pipe fitting is communicated with a smoke outlet of the boiler body, the other end of the smoke outlet pipe fitting is communicated with the superheater equipment, the first air blowing device is arranged on the smoke outlet pipe fitting and comprises a first air blower and a first air blowing pipeline, the first air blower is arranged on the smoke outlet pipe fitting, an air outlet of the first air blower is communicated with the first air blowing pipeline, and the first air blowing pipeline is communicated with the smoke outlet pipe fitting. According to the invention, low-temperature air is blown into the smoke outlet pipe fitting, so that the low-temperature air exchanges heat with high-temperature corrosive flue gas generated by the boiler body to generate high-temperature air, the direct heat exchange between the high-temperature corrosive flue gas and superheater equipment is reduced, the problem of corrosion of the superheater equipment is fundamentally solved, and the working efficiency of the boiler body can be improved.

Description

Anti-corrosion waste incineration boiler superheater system

Technical Field

The invention relates to the field of waste incineration technologies, in particular to an anti-corrosion waste incineration boiler superheater system.

Background

At present, along with the increasing abundance of municipal domestic wastes, the wastes bring more and more pressure to the green and environmental protection of cities. In order to treat municipal waste, a waste incineration method is generally adopted, and a large amount of waste is put into a power generation boiler for combustion treatment. During the combustion process of the garbage, a large amount of heat can be generated.

In the process of burning the garbage, the generated boiler flue gas contains a large amount of corrosive flue gas, and the boiler superheater and the like can generate serious high-temperature corrosion at a high temperature state, so that the overall power generation efficiency of the system is low.

In view of the above-mentioned related technologies, the inventor believes that a large amount of high-temperature corrosive air is generated during the incineration of the garbage, and the high-temperature corrosive air is directly contacted with the high-temperature steam metal heat exchanger, which easily causes corrosion of the boiler superheater.

Disclosure of Invention

In order to reduce the corrosion of high-temperature corrosive air generated by the boiler after the high-temperature corrosive air contacts with the high-temperature steam metal heat exchanger, the working efficiency of the power generation boiler is improved. The invention provides an anti-corrosion waste incineration boiler superheater system which comprises a boiler body, a smoke outlet pipe, a first air blowing device and superheater equipment, wherein the first air blowing device and the superheater equipment are positioned on the smoke outlet pipe, one end of the smoke outlet pipe is communicated with a smoke outlet of the boiler body, the other end of the smoke outlet pipe is communicated with the superheater equipment, the first air blowing device is arranged on the smoke outlet pipe, the first air blowing device comprises a first air blower and a first air blowing pipeline, an air outlet of the first air blower is communicated with the first air blowing pipeline, and the first air blowing pipeline is communicated with the smoke outlet pipe.

Through adopting above-mentioned technical scheme, adjust first air-blower, first air-blower is through first blast pipe, and the cigarette pipe fitting is gone into with low temperature air drum. When the high-temperature corrosive flue gas that the boiler body produced moves along a cigarette pipe fitting, the high-temperature corrosive flue gas that the boiler body produced directly carries out the heat transfer with low temperature air, produces high-temperature gas, and high-temperature gas continues the forward motion. And finally, the high-temperature gas is in direct contact with a superheater device for energy conversion. The low-temperature air is blown into the smoke outlet pipe fitting, so that the low-temperature air and the high-temperature corrosive flue gas generated by the boiler body exchange heat to generate high-temperature air, the direct heat exchange between the high-temperature corrosive flue gas and the superheater equipment is reduced, the problem of corrosion of the superheater equipment is fundamentally solved, and the working efficiency of the boiler body can be improved.

Optionally, the smoke outlet pipe comprises a horizontal pipe and a vertical pipe, the horizontal pipe is communicated with the vertical pipe, one end of the vertical pipe is far away from the horizontal pipe, the smoke outlet of the boiler body is communicated with the horizontal pipe, the first blast pipeline is communicated with the horizontal pipe, and one end of the horizontal pipe, which is far away from the vertical pipe, is connected with the superheater equipment.

By adopting the technical scheme, the high-temperature corrosive flue gas generated by the boiler body firstly enters the horizontal pipe in the flowing process, and the corrosive flue gas moves to the vertical pipe in the horizontal pipe, so that the corrosive flue gas and the low-temperature air are subjected to energy conversion within enough time, and the low-temperature air is converted into the high-temperature air. Then, the high temperature air moves upward along the vertical pipe. The smoke outlet pipe fitting is convenient for energy conversion between high-temperature corrosive smoke generated by the boiler body and low-temperature air, and can improve the energy conversion efficiency.

Optionally, an exchange tube for energy conversion is arranged between the horizontal tube and the vertical tube.

Through adopting above-mentioned technical scheme, the exchange tube that sets up can take place thermal conversion for the high temperature corrosivity flue gas that the boiler body produced and low temperature air and provide the space, makes high temperature corrosivity flue gas and low temperature air conversion high temperature air.

Optionally, a guide plate for guiding the first blowing duct is disposed between the horizontal pipe and the vertical pipe.

Through adopting above-mentioned technical scheme, the baffle that sets up can play certain guide effect to the low temperature air that flows into from first blast pipe and the flow of the high temperature corrosivity flue gas that flows in from the horizontal pipe, makes in low temperature air and the high temperature corrosivity flue gas drum exchange tube, takes place energy conversion, improves energy conversion efficiency.

Optionally, the air conditioner further comprises a second air blowing device, the second air blowing device comprises a second air blower and a second air blowing pipeline, one end of the second air blowing pipeline is communicated with an air outlet of the second air blower, and an air outlet of the second air blowing pipeline is communicated with the vertical pipe.

Through adopting above-mentioned technical scheme, adjust the second air-blower, the second air-blower is blown the low temperature air into second blast pipe, makes the high temperature corrosivity flue gas that has not carried out energy conversion again carry out energy conversion with the low temperature air. The second air-blowing device that sets up makes the low temperature air continue to carry out energy conversion once more to the high temperature corrosivity flue gas that has not carried out energy conversion, improves the conversion efficiency of high temperature corrosivity flue gas energy, reduces high temperature corrosivity flue gas and over heater equipment and causes the corruption, improves work efficiency.

Optionally, still including setting up tail gas processing apparatus on the perpendicular pipe, tail gas processing apparatus is including handling the pipe, handling the case and adsorbing the piece, the adsorbing piece sets up handle the inside of case, the adsorbing piece is used for adsorbing the processing to the harmful gas that boiler body produced, handle the one end of pipe with perpendicular pipe intercommunication, the other end with handle the cigarette mouth intercommunication of advancing of case, handle the cigarette mouth of case with superheater equipment intercommunication.

Through adopting above-mentioned technical scheme, follow the high-temperature air after the vertical pipe conversion, through handling the pipe, get into and handle the case. Under the effect of adsorption element, can adsorb the harmful substance in the high temperature air, can reduce harmful substance and discharge. The tail gas processing apparatus who sets up can handle the harmful substance in the high temperature air, can improve boiler body exhaust air quality.

Optionally, still including setting up handle the smoke and dust processing apparatus on the pipe, smoke and dust processing apparatus includes filter screen and collection box, filter screen and collection box all set up handle on the pipe, the filter screen is used for filtering the flue gas that the boiler body produced, the collection box is used for collecting the flue gas that the boiler body produced and handles.

Through adopting above-mentioned technical scheme, when the flue gas that the boiler body produced gets into the treatment pipe, the filter screen can filter the flue gas that the boiler body produced, reduces impurity and discharges into in the air. The smoke and dust processing apparatus who sets up can filter the flue gas that the boiler body produced, reduces in the middle of impurity directly emits into the air, can play certain guard action to the environment.

Optionally, be provided with clearance mechanism on the filter screen, clearance mechanism includes driving motor, clearance board and clearance brush, the clearance board sets up in driving motor's the drive shaft, the setting of clearance brush is in the clearance board is close to one side of filter screen, driving motor is used for the drive the clearance board moves.

Through adopting above-mentioned technical scheme, adjust driving motor, driving motor's drive shaft drives the clearance board and moves, and the clearance board can drive the brush motion that is located above that at the in-process of motion, and the brush can carry out the smoke and dust to the residue on the filter screen and clear up at the in-process of motion. The cleaning mechanism can clean excessive residues accumulated on the filter screen in time, reduce the blockage in the treatment pipe and improve the circulation of high-temperature air in the treatment pipe.

In summary, the invention includes at least one of the following beneficial technical effects:

the low-temperature air is blown into the smoke outlet pipe fitting, so that the low-temperature air exchanges heat with the high-temperature corrosive flue gas generated by the boiler body to generate high-temperature air, the direct heat exchange between the high-temperature corrosive flue gas and the superheater equipment is reduced, the problem of corrosion of the superheater equipment is fundamentally solved, and the working efficiency of the boiler body can be improved;

the smoke outlet pipe is arranged, so that high-temperature corrosive smoke generated by the boiler body and low-temperature air can be conveniently subjected to energy conversion, and the energy conversion efficiency can be improved;

the second air blowing device is arranged, so that the low-temperature air can continuously carry out energy conversion on the high-temperature corrosive flue gas which is not subjected to energy conversion again, the conversion efficiency of the energy of the high-temperature corrosive flue gas is improved, the corrosion of the high-temperature corrosive flue gas and superheater equipment is reduced, and the working efficiency is improved;

the arranged tail gas treatment device can treat harmful substances in high-temperature air and improve the quality of air discharged by the boiler body;

the smoke and dust processing apparatus who sets up can filter the flue gas that the boiler body produced, reduces in the middle of impurity directly emits into the air, can play certain guard action to the environment.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a corrosion-resistant waste-incineration boiler superheater system according to an embodiment of the invention.

FIG. 2 is a cross-sectional view of a corrosion resistant waste-incineration boiler superheater system according to an embodiment of the invention.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2.

Description of reference numerals: 1. a boiler body; 2. a smoke outlet pipe fitting; 21. a horizontal tube; 22. a vertical tube; 23. exchanging pipes; 24. a guide plate; 3. a first blower device; 31. a first blower; 32. a first blast duct; 4. a superheater device; 5. a second blower device; 51. a second blower; 52. a second blast duct; 6. a tail gas treatment device; 61. a treatment tube; 62. a treatment tank; 63. an adsorbing member; 7. a smoke dust treatment device; 71. a filter screen; 72. a recycling bin; 73. a cleaning mechanism; 731. a drive motor; 732. cleaning the plate; 733. and cleaning the brush.

Detailed Description

The present invention is described in further detail below with reference to figures 1-3.

The embodiment of the invention discloses an anti-corrosion waste incineration boiler superheater system. Referring to fig. 1, anticorrosive msw incineration boiler superheater system includes boiler body 1, goes out cigarette pipe fitting 2, is located a first air-blast device 3 and superheater equipment 4 on the cigarette pipe fitting 2 that goes out, and the one end of going out cigarette pipe fitting 2 communicates with the outlet flue of boiler body 1, and the other end communicates with superheater equipment 4. The first air blowing device 3 is arranged on the smoke outlet pipe 2, and the first air blowing device 3 can blow low-temperature air into the smoke outlet pipe 2.

Referring to fig. 1, in order to reduce the corrosion of the high-temperature corrosive flue gas generated by burning the garbage in the boiler body 1 after contacting with the superheater equipment 4, the working efficiency of the boiler body 1 is improved. The first blowing device 3 includes a first blower 31 and a first blowing duct 32. The air outlet of the first blower 31 is communicated with the first air blowing pipe 32, and the first air blowing pipe 32 is communicated with the smoke outlet pipe 2.

Referring to fig. 1 and 2, in order to facilitate heat exchange between low-temperature air and high-temperature corrosive flue gas generated by the boiler body 1, the flue gas outlet pipe 2 comprises a horizontal pipe 21 and a vertical pipe 22, and one end of the horizontal pipe 21, which is far away from the vertical pipe 22, is communicated with a flue gas outlet of the boiler body 1. An exchange tube 23 is arranged between the horizontal tube 21 and the vertical tube 22, the exchange tube 23 is respectively connected with the horizontal tube 21 and the vertical tube 22 integrally, and the horizontal tube 21 and the vertical tube 22 are communicated through the exchange tube 23. A guide plate 24 is arranged between the horizontal pipe 21 and the vertical pipe 22, and the flow of the low-temperature air and the high-temperature corrosive flue gas can be guided through the guide plate 24, so that the low-temperature air and the high-temperature corrosive flue gas flow into the exchange pipe 23 for heat conversion. The first blast duct 32 is arranged in connection with the horizontal duct 21 and the end of the vertical duct 22 remote from the horizontal duct 21 is connected to the superheater arrangement 4.

Referring to fig. 1 and 2, in order to improve that the low-temperature air and the high-temperature corrosive flue gas can exchange heat sufficiently, the device further comprises a second air blowing device 5, wherein the second air blowing device 5 comprises a second air blower 51 and a second air blowing pipeline 52, one end of the second air blowing pipeline 52 is communicated with an air outlet of the second air blower 51, and a base of the second air blower 51 is fixed on the second air blowing pipeline 52 through bolts. The air outlet of the second blowing duct 52 communicates with the air inlet of the vertical pipe 22, and the second blowing duct 52 is integrally connected with the vertical pipe 22. By adjusting the second blower 51, the second blower 51 can blow low-temperature air into the vertical pipe 22 through the second blower duct 52, so that the low-temperature air and the high-temperature corrosive flue gas which has not been subjected to energy conversion are subjected to energy conversion.

Referring to fig. 2 and 3, in order to facilitate the treatment of the harmful gases in the exhaust gas, the exhaust gas treatment device 6 is further provided on the vertical pipe 22, and the exhaust gas treatment device 6 includes a treatment pipe 61, a treatment tank 62, and an adsorption member 63. The treatment tube 61 communicates at one end with the vertical tube 22 and at the other end with the inlet of the treatment tank 62, the outlet of the treatment tank 62 communicating with the superheater arrangement 4. The adsorbent 63 sets up in the inside of handling case 62, and the adsorbent 63 of this embodiment sets up to the active carbon granule, and when high temperature gas passed through, adsorbent 63 can adsorb the harmful gas that boiler body 1 produced and handle, reduces in the middle of the harmful substance discharges the air.

Referring to fig. 2 and 3, the smoke treatment device 7 is further provided on the treatment pipe 61, the smoke treatment device 7 includes a filter screen 71 and a recovery box 72, and the filter screen 71 and the recovery box 72 are both provided on the treatment pipe 61. The filter screen 71 is fixed on the treatment pipe 61 through a bolt, the filter screen 71 can filter the flue gas generated by the boiler body 1, the recovery box 72 is fixed on the treatment pipe 61 through a bolt, and the recovery box 72 can collect and treat the flue gas generated by the boiler body 1. In order to reduce clogging of the filter 71 by the residue on the filter 71, a cleaning mechanism 73 is provided on the filter 71. Cleaning mechanism 73 includes driving motor 731, clearance board 732 and clearance brush 733, clearance board 732 sets up in driving motor 731's drive shaft, clearance brush 733 bonds in the one side that clearance board 732 is close to filter screen 71, driving motor 731's drive shaft passes through the bolt fastening on filter screen 71, through adjusting driving motor 731, driving motor 731's drive shaft can drive clearance board 732 and move, clearance board 732 is in the in-process of moving, can drive clearance brush 733 and clear up the space of filter screen 71.

The implementation principle of the anti-corrosion waste incineration boiler superheater system in the embodiment of the application is as follows: the first blower 31 is adjusted, and the first blower 31 blows the low temperature air into the horizontal tube 21 through the first blower duct 32. When the high-temperature corrosive flue gas generated by the boiler body 1 moves along the horizontal pipe 21, the high-temperature corrosive flue gas and the low-temperature air move to the exchange pipe 23 to directly exchange heat under the action of the guide plate 24, so that high-temperature gas is generated, and the high-temperature gas continues to move forwards. In the flowing process of high-temperature corrosive flue gas generated by the boiler body 1, the corrosive flue gas firstly enters the horizontal pipe 21, and in the process that the corrosive flue gas moves to the vertical pipe 22 in the horizontal pipe 21, enough time is left between the corrosive flue gas and low-temperature air for energy conversion, so that the low-temperature air is converted into high-temperature air.

The second blower 51 is adjusted, and the second blower 51 blows low-temperature air into the second blower pipe 52, so that the high-temperature corrosive flue gas which is not subjected to energy conversion and the low-temperature air are subjected to energy conversion again. Then, the high temperature air after the conversion firstly passes through the processing pipe 61, and when the high temperature air enters the processing pipe 61, the filter screen 71 can filter the flue gas generated by the boiler body 1, and the accumulated impurities fall into the recovery box 72. When the filter screen 71 is blocked, the driving motor 731 is adjusted, the driving shaft of the driving motor 731 drives the cleaning plate 732 to move, the cleaning plate 732 can drive the brush located on the cleaning plate to move in the moving process, and the brush can timely clean residues on the filter screen 71 in the moving process, so that the filter screen 71 is prevented from being blocked.

After the high-temperature air passes through the filter screen 71, the high-temperature air enters the treatment box 62, and under the action of the adsorption piece 63, the adsorption piece 63 can adsorb harmful substances in the high-temperature air, so that the harmful substances can be reduced from being discharged into the air. Finally, the high-temperature gas is contacted with the superheater device 4 for energy conversion.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an anticorrosive msw incineration boiler superheater system which characterized in that: including boiler body (1), play cigarette pipe fitting (2), be located go out first air-blast device (3) and superheater equipment (4) on cigarette pipe fitting (2), the one end of going out cigarette pipe fitting (2) with the outlet flue intercommunication of boiler body (1), the other end with superheater equipment (4) intercommunication sets up, first air-blast device (3) set up go out on cigarette pipe fitting (2), first air-blast device (3) include first air-blower (31) and first blast pipe way (32), the air outlet of first air-blower (31) with first blast pipe way (32) intercommunication, first blast pipe way (32) with it sets up to go out cigarette pipe fitting (2) intercommunication.

2. A corrosion resistant waste incineration boiler superheater system according to claim 1, wherein: go out cigarette pipe fitting (2) including horizontal pipe (21) and vertical pipe (22), horizontal pipe (21) and vertical pipe (22) intercommunication set up, horizontal pipe (21) are kept away from the one end of vertical pipe (22) with the outlet flue intercommunication of boiler body (1) sets up, first blast pipe (32) with horizontal pipe (21) intercommunication sets up, vertical pipe (22) are kept away from the one end of horizontal pipe (21) with superheater equipment (4) are connected.

3. A corrosion resistant waste incineration boiler superheater system according to claim 2, wherein: an exchange tube (23) for energy conversion is arranged between the horizontal tube (21) and the vertical tube (22).

4. A corrosion resistant waste incineration boiler superheater system according to claim 2, wherein: a guide plate (24) for guiding the first blast pipe (32) is arranged between the horizontal pipe (21) and the vertical pipe (22).

5. A corrosion resistant waste incineration boiler superheater system according to claim 2, wherein: the air conditioner further comprises a second air blowing device (5), wherein the second air blowing device (5) comprises a second air blower (51) and a second air blowing pipeline (52), one end of the second air blowing pipeline (52) is communicated with an air outlet of the second air blower (51), and an air outlet of the second air blowing pipeline (52) is communicated with the vertical pipe (22).

6. A corrosion resistant waste incineration boiler superheater system according to claim 2, wherein: still including setting up tail gas processing apparatus (6) on vertical pipe (22), tail gas processing apparatus (6) are including handling pipe (61), processing case (62) and adsorption part (63), adsorption part (63) set up the inside of handling case (62), adsorption part (63) are used for adsorbing the processing to the harmful gas that boiler body (1) produced, the one end of handling pipe (61) with vertical pipe (22) intercommunication, the other end with the smoke inlet intercommunication of handling case (62), the smoke outlet of handling case (62) with superheater equipment (4) intercommunication.

7. An anti-corrosion waste incineration boiler superheater system according to claim 6, wherein: still including setting up processing apparatus (7) of smoke and dust on pipe (61), smoke and dust processing apparatus (7) include filter screen (71) and collection box (72), filter screen (71) and collection box (72) all set up processing pipe (61) is last, filter screen (71) are used for filtering the flue gas that boiler body (1) produced, collection box (72) are used for collecting the processing to the flue gas that boiler body (1) produced.

8. An anti-corrosion waste incineration boiler superheater system according to claim 7, wherein: be provided with clearance mechanism (73) on filter screen (71), clearance mechanism (73) are including driving motor (731), clearance board (732) and clearance brush (733), clearance board (732) set up in driving motor (731)'s the drive shaft, clearance brush (733) set up clearance board (732) are close to one side of filter screen (71), driving motor (731) are used for the drive clearance board (732) move.