CN210568462U - Low-nitrogen combustion system - Google Patents
Low-nitrogen combustion system Download PDFInfo
- Publication number
- CN210568462U CN210568462U CN201921277490.4U CN201921277490U CN210568462U CN 210568462 U CN210568462 U CN 210568462U CN 201921277490 U CN201921277490 U CN 201921277490U CN 210568462 U CN210568462 U CN 210568462U
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- flue gas
- pipeline
- combustion system
- scr reactor
- discharge port
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses a low nitrogen combustion system, including the combustion system body, the combustion system body is including the burning furnace, SCR denitration subassembly, dry process adsorption equipment, dust collector and the chimney that connect gradually, be equipped with circulation flue gas entry on the lateral wall of burning furnace, SCR denitration subassembly includes and burns burning furnace SCR reactor that passes through the pipe connection and pass through the ammonia mechanism that spouts of pipe connection with the SCR reactor, the last fume outlet that is equipped with of dust collector, fume outlet has the fan of airing exhaust through the pipe connection, be connected with a three way check valve on the air exit of fan of airing exhaust, three way check valve's an export of airing exhaust passes through the pipe connection with the chimney, another export of airing exhaust of three way check valve passes through the pipe connection with circulation flue gas entry. The utility model has the advantages of reasonable design, the low denitration rate that just can improve flue gas denitration purification treatment greatly of running cost is favorable to the production of industrialization to be used.
Description
Technical Field
The utility model relates to a domestic waste burns flue gas purification of power plant and handles technical field, concretely relates to low nitrogen combustion system.
Background
Domestic waste burns power plant all can produce the flue gas when burning the electricity generation to rubbish, contains more noxious material in the produced flue gas, consequently need carry out flue gas denitration purification treatment, and flue gas denitration purification treatment is through burning the process of flue gas in order to get rid of nitrogen oxide in the flue gas. But the flue gas denitration rate that current flue gas denitration purification treatment obtained is lower, along with the continuous improvement of people's environmental protection consciousness, also more and more high to the requirement of environmental protection, and current flue gas denitration rate can not satisfy people's requirement.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned problem, provide a structural design is reasonable, and the running cost is low and can improve the low nitrogen combustion system of flue gas denitration purification treatment denitration rate greatly.
The utility model adopts the following technical scheme:
a low-nitrogen combustion system comprises a combustion system body, wherein the combustion system body comprises an incinerator, an SCR denitration assembly, a dry adsorption device, a dust removal device and a chimney which are sequentially arranged, the side wall of the incinerator is provided with a garbage inlet and a circulating flue gas inlet, the bottom of the incinerator is provided with a first air inlet and a slag discharge port, the first air inlet is connected with an air inlet fan through a pipeline, the SCR denitration assembly comprises an SCR reactor connected with the incinerator through a pipeline and an ammonia injection mechanism connected with the SCR reactor through a pipeline, the dry adsorption device is respectively connected with the SCR reactor and the dust removal device through pipelines, the dust removal device is provided with a flue gas discharge port, the flue gas discharge port is connected with an exhaust fan through a pipeline, an exhaust port of the exhaust fan is connected with a three-way exhaust valve, and an outlet of the three-way valve is connected with the chimney through a pipeline, and the other air exhaust outlet of the three-way valve is connected with the circulating flue gas inlet through a pipeline.
As the utility model discloses a preferred technical scheme, spout ammonia mechanism including looping through pipe connection's ammonia storage device, vapourizing unit and mixing arrangement, mixing arrangement passes through the pipeline and is connected with the SCR reactor, the last second air inlet that is equipped with of mixing arrangement.
As an optimized technical scheme of the utility model, the bottom of SCR reactor is equipped with first ash discharge port, dust collector's bottom is equipped with the second ash discharge port.
The utility model has the advantages that:
the utility model has the advantages of reasonable design, wherein connect through the three way valve between flue gas discharge port, circulation flue gas entry and chimney, can participate in the burning again in the part low temperature flue gas circulation backward flow to the incinerator after will purifying through the three way valve during use, thereby realize reducing the purpose that nitrogen oxide generated in the combustion process through increasing reducing atmosphere and suppression local highest temperature to improve the denitration rate of flue gas denitration purification treatment.
Drawings
FIG. 1 is a schematic structural view of a combustion system body of the present invention;
the symbols in the drawings illustrate that:
the system comprises an incinerator 1, a dry adsorption device 2, a dust removal device 3, a chimney 4, a garbage inlet 5, a circulating flue gas inlet 6, a first air inlet 7, a slag discharge port 8, an air inlet fan 9, an SCR reactor 10, a flue gas discharge port 11, an exhaust fan 12, a three-way valve 13, an ammonia storage device 14, a vaporization device 15, a mixing device 16, a second air inlet 17, a first ash discharge port 18 and a second ash discharge port 19.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a low-nitrogen combustion system comprises a combustion system body, wherein the combustion system body comprises an incinerator 1, an SCR denitration assembly, a dry adsorption device 2, a dust removal device 3 and a chimney 4 which are sequentially arranged, in this embodiment, the dry adsorption device 2 is an activated carbon injection device, and the dust removal device is a bag-type dust remover;
a garbage inlet 5 and a circulating flue gas inlet 6 are arranged on the side wall of the incinerator 1, a first air inlet 7 and a slag discharge port 8 are arranged at the bottom of the incinerator 1, the first air inlet 7 is connected with an air inlet fan 9 for delivering external air into the incinerator 1 through a pipe, the SCR denitration component comprises an SCR reactor 10 connected with the incinerator 1 through a pipeline and an ammonia spraying mechanism connected with the SCR reactor 10 through a pipeline, the dry adsorption device 2 is respectively connected with the SCR reactor 10 and the dust removal device 3 through pipelines, the dust removing device 3 is provided with a smoke outlet 11, the smoke outlet 11 is connected with an exhaust fan 12 through a pipeline, the air outlet of the exhaust fan 12 is connected with a three-way valve 13, one air outlet of the three-way valve 13 is connected with the chimney 4 through a pipeline, the other air exhaust outlet of the three-way valve 13 is connected with the circulating flue gas inlet 6 through a pipeline;
the ammonia spraying mechanism comprises an ammonia storage device 14, a vaporizing device 15 and a mixing device 16 which are sequentially connected through a pipeline, the mixing device 16 is connected with the SCR reactor 10 through a pipeline, a second air inlet 17 is formed in the mixing device 16, and a control valve is arranged on the second air inlet 17; specifically, the ammonia storage device 14 is located above the vaporization device 15, a blower is arranged on a pipeline between the vaporization device 15 and the mixing device 16, liquid ammonia in the ammonia storage device 14 enters the vaporization device 15 through the pipeline for vaporization during operation, enters the mixing device 16 through the pipeline under the action of the blower for mixing and diluting with air after vaporization, and finally enters the SCR reactor 10 through the pipeline for reaction with flue gas;
the bottom of the SCR reactor 10 is provided with a first ash discharge port 18, and the bottom of the dust removal device 3 is provided with a second ash discharge port 19.
The utility model discloses the theory of use briefly states as follows:
at first, the garbage to be incinerated is put into the incinerator 1 through the garbage inlet 5 for incineration, the flue gas generated after the garbage incineration sequentially enters the SCR denitration component, the dry adsorption device 2 and the dust removal device 3 through the pipeline for purification, the purified flue gas is divided through the three-way valve 13 on the dust removal device 3, one part of the purified flue gas enters the chimney 4 for discharge, and the other part of the purified flue gas flows back into the incinerator 1 through the pipeline and the circulating flue gas inlet 6 to participate in combustion again, so that the denitration rate of the flue gas denitration purification treatment is improved.
Finally, it should be noted that: these embodiments are merely illustrative of the present invention and do not limit the scope of the invention. In addition, other variations and modifications will be apparent to persons skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.
Claims (3)
1. The utility model provides a low-nitrogen combustion system, includes the combustion system body, the combustion system body is including burning furnace (1), SCR denitration subassembly, dry adsorption equipment (2), dust collector (3) and chimney (4) that set gradually, its characterized in that: the incinerator is characterized in that a garbage inlet (5) and a circulating flue gas inlet (6) are arranged on the side wall of the incinerator (1), a first air inlet (7) and a slag discharge port (8) are arranged at the bottom of the incinerator (1), the first air inlet (7) is connected with an air inlet fan (9) through a pipeline, the SCR denitration assembly comprises an SCR reactor (10) connected with the incinerator (1) through a pipeline and an ammonia spraying mechanism connected with the SCR reactor (10) through a pipeline, the dry adsorption device (2) is respectively connected with the SCR reactor (10) and the dust removal device (3) through pipelines, a flue gas discharge port (11) is arranged on the dust removal device (3), the flue gas discharge port (11) is connected with an exhaust fan (12) through a pipeline, an exhaust port of the exhaust fan (12) is connected with a three-way valve (13), and an exhaust outlet of the three-way valve (13) is connected with a chimney (4) through a pipeline, and the other air exhaust outlet of the three-way valve (13) is connected with the circulating flue gas inlet (6) through a pipeline.
2. A low-nox combustion system according to claim 1, wherein: the ammonia spraying mechanism comprises an ammonia storage device (14), a vaporizing device (15) and a mixing device (16) which are sequentially connected through a pipeline, the mixing device (16) is connected with the SCR reactor (10) through a pipeline, and a second air inlet (17) is formed in the mixing device (16).
3. A low-nox combustion system according to claim 1, wherein: the bottom of the SCR reactor (10) is provided with a first ash discharge port (18), and the bottom of the dust removal device (3) is provided with a second ash discharge port (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921277490.4U CN210568462U (en) | 2019-08-08 | 2019-08-08 | Low-nitrogen combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921277490.4U CN210568462U (en) | 2019-08-08 | 2019-08-08 | Low-nitrogen combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210568462U true CN210568462U (en) | 2020-05-19 |
Family
ID=70638110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921277490.4U Expired - Fee Related CN210568462U (en) | 2019-08-08 | 2019-08-08 | Low-nitrogen combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210568462U (en) |
-
2019
- 2019-08-08 CN CN201921277490.4U patent/CN210568462U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200519 |