CN215175097U - Utilize calcium sulfate to control nitrogen oxide's hazardous waste incinerator device - Google Patents
Utilize calcium sulfate to control nitrogen oxide's hazardous waste incinerator device Download PDFInfo
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- CN215175097U CN215175097U CN202121174035.9U CN202121174035U CN215175097U CN 215175097 U CN215175097 U CN 215175097U CN 202121174035 U CN202121174035 U CN 202121174035U CN 215175097 U CN215175097 U CN 215175097U
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- Prior art keywords
- calcium sulfate
- fly ash
- nozzle
- combustion chamber
- hazardous waste
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- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 title claims abstract description 112
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 18
- 239000010881 fly ash Substances 0.000 claims abstract description 37
- 239000003245 coal Substances 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims description 27
- 239000000779 smoke Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract description 8
- 239000010802 sludge Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 230000001502 supplementing effect Effects 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- 239000003517 fume Substances 0.000 description 4
- 238000004056 waste incineration Methods 0.000 description 3
- 239000002956 ash Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
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Abstract
The utility model relates to an utilize calcium sulfate control nitrogen oxide's hazardous waste to burn burning furnace device, including the furnace body, the furnace body bottom is equipped with a wind plenum, and furnace body week portion is equipped with unloading pipe, lower coal pipe, calcium sulfate spout, flying dust spout. The discharging pipe is used for conveying dangerous wastes such as oil sludge, sludge and the like to be incinerated, and the discharging pipe is used for conveying auxiliary fire coal. The device is provided with the calcium sulfate nozzle and the fly ash nozzle, can control the nitrogen oxide by adopting calcium sulfate, fully utilizes the content of calcium sulfate in the fly ash, assists in supplementing a small amount of industrial calcium sulfate and achieves the purpose of controlling the nitrogen oxide. Compared with the additional construction of SNCR and SCR devices, the investment is low, no additional dangerous chemicals are added, and the safety risk of the project is reduced. When in use, the fly ash is added into the incineration fly ash considering that the incineration fly ash contains a large amount of calcium sulfate. The fly ash is added preferentially, and when the content of calcium sulfate in the fly ash is not enough, a small amount of calcium sulfate is supplemented.
Description
Technical Field
The utility model relates to an utilize calcium sulfate control nitrogen oxide's hazardous waste to burn burning furnace device.
Background
The fluidized bed incinerator has the characteristics of wide fuel adaptability, high combustion efficiency, low nitrogen oxide emission and the like, and is widely used in production, in recent years, the thermal engineering research institute of Zhejiang university expands the fluidized bed incinerator to the field of hazardous waste incineration, develops a special waste fluidized bed incinerator, and realizes effective disposal of hazardous solid wastes such as oil sludge and sludge. The special waste fluidized bed incinerator adopts a low-nitrogen combustion design, flue gas is desulfurized by a semi-dry method, and the nitrogen oxides are further controlled by adopting flue gas recirculation. The emission of nitrogen oxides can meet the emission control requirements of hazardous waste incineration pollution control standard (GB 18484-2001) on the nitrogen oxides.
With the increasing strictness of environmental requirements, new hazardous waste incineration pollution control standards (GB 18484-2020) are about to be implemented in 2021, 7 and 1. The standard improves the emission limit of nitrogen oxides from the original 500mg/m3 to the daily average of 250mg/m 3. The emission of nitrogen oxides in the original production process cannot meet the requirements of new emission standards.
SUMMERY OF THE UTILITY MODEL
In view of the not enough of prior art, the utility model aims to solve the technical problem that an utilize calcium sulfate control nitrogen oxide's hazardous waste to burn burning furnace device is provided, simple structure, convenient high efficiency.
In order to solve the technical problem, the technical scheme of the utility model is that: a hazardous waste incinerator device for controlling nitrogen oxides by using calcium sulfate comprises a furnace body, wherein a primary air chamber is arranged at the bottom of the furnace body, and a feeding pipe, a coal feeding pipe, a calcium sulfate nozzle and a fly ash nozzle are arranged on the periphery of the furnace body.
Preferably, the furnace body consists of a combustion chamber dense-phase zone at the bottom and a combustion chamber dilute-phase zone at the top.
Preferably, the primary air chamber is communicated with the dense-phase area of the combustion chamber through a plurality of air caps, and the side part of the primary air chamber is a primary air inlet.
Preferably, the calcium sulfate nozzle and the fly ash nozzle are both positioned in a dense-phase region of the combustion chamber, and the dense-phase region of the combustion chamber is also provided with an atomized water spray gun which is positioned below the calcium sulfate nozzle and the fly ash nozzle.
Preferably, the blanking pipe and the coal blanking pipe are positioned above the calcium sulfate nozzle and the fly ash nozzle in the dense-phase area of the combustion chamber.
Preferably, the dilute phase zone of the combustion chamber is provided with a secondary air inlet.
Preferably, the top of the dilute phase zone of the combustion chamber is provided with a smoke exhaust pipe, the smoke exhaust pipe is sequentially provided with a boiler, a waste heat utilization device, a smoke treatment device, an induced draft fan and a chimney along the smoke flow direction, the smoke exhaust pipe between the induced draft fan and the chimney is connected with a smoke recirculation pipeline, the smoke recirculation pipeline is provided with a valve, and the smoke exhaust pipe between the smoke recirculation pipeline and the induced draft fan is provided with a valve.
Compared with the prior art, the utility model discloses following beneficial effect has: the device is provided with the calcium sulfate nozzle and the fly ash nozzle, can control the nitrogen oxide by adopting calcium sulfate, fully utilizes the content of calcium sulfate in the fly ash, assists in supplementing a small amount of industrial calcium sulfate and achieves the purpose of controlling the nitrogen oxide. Compared with the additional construction of SNCR and SCR devices, the investment is low, no additional dangerous chemicals are added, and the safety risk of the project is reduced. When in use, the fly ash is added into the incineration fly ash considering that the incineration fly ash contains a large amount of calcium sulfate. The fly ash is added preferentially, and when the content of calcium sulfate in the fly ash is not enough, a small amount of calcium sulfate is supplemented.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1, the present embodiment provides a hazardous waste incinerator apparatus using calcium sulfate to control nitrogen oxides, which includes a furnace body 1, a primary air chamber 2 disposed at the bottom of the furnace body, a discharge pipe 3, a coal discharge pipe 4, a calcium sulfate nozzle 5, and a fly ash nozzle 6 disposed at the periphery of the furnace body. The discharging pipe is used for conveying dangerous wastes such as oil sludge, sludge and the like to be incinerated, and the discharging pipe is used for conveying auxiliary fire coal.
The embodiment of the utility model provides an in, the calcium sulfate spout has two and relative settings, and the fly ash spout has two and relative settings. The fly ash and the calcium sulfate are respectively conveyed through respective pneumatic conveying systems.
In the embodiment of the utility model, the furnace body is composed of a combustion chamber dense-phase zone 7 at the bottom and a combustion chamber dilute-phase zone 8 at the top.
In the embodiment of the present invention, the primary air chamber is communicated with the dense phase region of the combustion chamber through a plurality of air caps 9, and the lateral part of the primary air chamber is a primary air inlet 10.
In the embodiment of the utility model, calcium sulfate spout and flying ash spout all are located the dense district of combustion chamber, and the dense district of combustion chamber still is equipped with atomizing water spray gun 11, and atomizing water spray gun is located the below of calcium sulfate spout and flying ash spout.
In the embodiment of the utility model, the blanking pipe and the coal blanking pipe are positioned above the calcium sulfate nozzle and the fly ash nozzle in the dense phase region of the combustion chamber. Calcium sulfate is conveyed by a pneumatic conveying system, sprayed into a dense-phase area of the combustion chamber through a calcium sulfate nozzle, and simultaneously sprayed with a proper amount of atomized water. Considering that the incineration fly ash contains a large amount of calcium sulfate, part of the fly ash is added. The fly ash is added preferentially, and when the content of calcium sulfate in the fly ash is not enough, a small amount of calcium sulfate is supplemented.
In the embodiment of the present invention, a secondary air inlet 12 is provided on the dilute phase zone of the combustion chamber.
The embodiment of the utility model provides an in, the combustion chamber dilute phase district top is equipped with the pipe 13 of discharging fume, has set gradually boiler 14, waste heat utilization device 15, flue gas processing apparatus 16, draught fan 17, chimney 18 on discharging fume the pipe along the flue gas flow direction, and wherein the pipe of discharging fume between draught fan and the chimney is connected with flue gas recirculation pipeline 19, is equipped with valve 20 on the flue gas recirculation pipeline, is equipped with valve 20 on the pipe of discharging fume between flue gas recirculation pipeline and the draught fan.
The working principle of the hazardous waste incinerator device for controlling nitric oxide by using calcium sulfate is as follows: the device is provided with the calcium sulfate nozzle and the fly ash nozzle, can control the nitrogen oxide by adopting calcium sulfate, fully utilizes the content of calcium sulfate in the fly ash, assists in supplementing a small amount of industrial calcium sulfate and achieves the purpose of controlling the nitrogen oxide. Compared with the additional construction of SNCR and SCR devices, the investment is low, no additional dangerous chemicals are added, and the safety risk of the project is reduced. When in use, the fly ash is added into the incineration fly ash considering that the incineration fly ash contains a large amount of calcium sulfate. The fly ash is added preferentially, and when the content of calcium sulfate in the fly ash is not enough, a small amount of calcium sulfate is supplemented.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides an utilize calcium sulfate to control hazardous waste incinerator device of nitrogen oxide which characterized in that: the device comprises a furnace body, wherein a primary air chamber is arranged at the bottom of the furnace body, and a discharge pipe, a coal discharge pipe, a calcium sulfate nozzle and a fly ash nozzle are arranged on the periphery of the furnace body.
2. The hazardous waste incinerator unit using calcium sulfate to control nitrogen oxides according to claim 1, wherein: the furnace body consists of a combustion chamber dense-phase area at the bottom and a combustion chamber dilute-phase area at the top.
3. The hazardous waste incinerator unit using calcium sulfate to control nitrogen oxides according to claim 2, wherein: the primary air chamber is communicated with the dense-phase area of the combustion chamber through a plurality of air caps, and the side part of the primary air chamber is a primary air inlet.
4. The hazardous waste incinerator unit using calcium sulfate to control nitrogen oxides according to claim 2, wherein: the calcium sulfate nozzle and the fly ash nozzle are both positioned in the dense-phase area of the combustion chamber, and the dense-phase area of the combustion chamber is also provided with an atomized water spray gun which is positioned below the calcium sulfate nozzle and the fly ash nozzle.
5. The hazardous waste incinerator unit using calcium sulfate to control nitrogen oxides according to claim 2, wherein: the blanking pipe and the blanking pipe are positioned above the calcium sulfate nozzle and the fly ash nozzle in the dense-phase area of the combustion chamber.
6. The hazardous waste incinerator unit using calcium sulfate to control nitrogen oxides according to claim 2, wherein: the dilute phase area of the combustion chamber is provided with a secondary air inlet.
7. The hazardous waste incinerator unit using calcium sulfate to control nitrogen oxides according to claim 2, wherein: the top of the dilute phase area of the combustion chamber is provided with a smoke exhaust pipe, a boiler, a waste heat utilization device, a smoke treatment device, an induced draft fan and a chimney are sequentially arranged on the smoke exhaust pipe along the smoke flow direction, wherein the smoke exhaust pipe between the induced draft fan and the chimney is connected with a smoke recirculation pipeline, a valve is arranged on the smoke recirculation pipeline, and a valve is arranged on the smoke exhaust pipe between the smoke recirculation pipeline and the induced draft fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121174035.9U CN215175097U (en) | 2021-05-28 | 2021-05-28 | Utilize calcium sulfate to control nitrogen oxide's hazardous waste incinerator device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121174035.9U CN215175097U (en) | 2021-05-28 | 2021-05-28 | Utilize calcium sulfate to control nitrogen oxide's hazardous waste incinerator device |
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| Publication Number | Publication Date |
|---|---|
| CN215175097U true CN215175097U (en) | 2021-12-14 |
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|---|---|---|---|
| CN202121174035.9U Expired - Fee Related CN215175097U (en) | 2021-05-28 | 2021-05-28 | Utilize calcium sulfate to control nitrogen oxide's hazardous waste incinerator device |
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| Country | Link |
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| CN (1) | CN215175097U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116379437A (en) * | 2023-04-07 | 2023-07-04 | 扬州嘉明环保科技有限公司 | Incinerator for industrial sulfuric acid preparation process |
-
2021
- 2021-05-28 CN CN202121174035.9U patent/CN215175097U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116379437A (en) * | 2023-04-07 | 2023-07-04 | 扬州嘉明环保科技有限公司 | Incinerator for industrial sulfuric acid preparation process |
| CN116379437B (en) * | 2023-04-07 | 2024-01-16 | 扬州嘉明环保科技有限公司 | Incinerator for industrial sulfuric acid preparation process |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211214 |