CN219764968U - Reducing agent gasification type SNCR (selective non-catalytic reduction) method denitration device - Google Patents
Reducing agent gasification type SNCR (selective non-catalytic reduction) method denitration device Download PDFInfo
- Publication number
- CN219764968U CN219764968U CN202320547133.5U CN202320547133U CN219764968U CN 219764968 U CN219764968 U CN 219764968U CN 202320547133 U CN202320547133 U CN 202320547133U CN 219764968 U CN219764968 U CN 219764968U
- Authority
- CN
- China
- Prior art keywords
- reducing agent
- assembly
- furnace
- gasification
- reductant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 122
- 238000002309 gasification Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims description 21
- 238000010531 catalytic reduction reaction Methods 0.000 title abstract description 4
- 238000010790 dilution Methods 0.000 claims abstract description 25
- 239000012895 dilution Substances 0.000 claims abstract description 25
- 238000002347 injection Methods 0.000 claims abstract description 23
- 239000007924 injection Substances 0.000 claims abstract description 23
- 238000009826 distribution Methods 0.000 claims abstract description 12
- 238000003860 storage Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003546 flue gas Substances 0.000 abstract description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000000746 purification Methods 0.000 abstract description 5
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 6
- 238000007865 diluting Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model belongs to the technical field of flue gas purification, and provides a reducing agent gasification type SNCR (selective non-catalytic reduction) denitration device. Comprises a reducing agent supply assembly, a reducing agent gasification assembly, a reducing agent dilution assembly and a reducing agent distribution injection grid assembly; the reducing agent supply assembly is connected with the reducing agent gasification assembly, the reducing agent gasification assembly is connected with the reducing agent dilution assembly, the reducing agent dilution assembly is connected with the reducing agent distribution injection grid assembly, and the reducing agent distribution injection grid assembly performs denitration in the furnace. Compared with the prior art, the utility model is suitable for furnace denitration in which the pipelines in the furnace are more, water is not allowed to be sprayed into the furnace, corrosion in the furnace is avoided, ammonia nitrogen gas flow in the furnace is not mixed uniformly, and the conventional SNCR is not suitable for the furnace denitration, and the energy consumption is relatively small, and the denitration effect is good.
Description
Technical Field
The utility model belongs to the technical field of flue gas purification, and particularly relates to a reducing agent gasification type SNCR (selective non-catalytic reduction) denitration device.
Background
At present, harmful substances such as NOx and the like are generated in the combustion of the industrial production process, and the environmental pollution is caused. At present, most furnace types can directly adopt SNCR for denitration, but some furnace types are more special such as: the furnace type of conventional SNCR is not suitable for avoiding corrosion in the furnace, uneven mixing of ammonia nitrogen gas flow in the furnace and the like due to the fact that more pipelines in the furnace and no water is allowed to be sprayed in the furnace, so that the denitration and purification of the flue gas of the furnace type which is not suitable for the conventional SNCR are very important.
In the prior art, the furnace type is as follows: the method has the advantages that the number of pipelines in the furnace is large, water injection is not allowed in the furnace, corrosion in the furnace is avoided, ammonia nitrogen gas flow in the furnace is unevenly mixed, the conventional SNCR is not suitable for the furnace, the flue gas denitration treatment is difficult to purify the discharged flue gas to reach the standard, and the denitration purification system device and the process method are few from the aspects of investment, modification, occupation of land and relatively small energy consumption, so that a purification system and process capable of enabling the denitration of the furnace to reach the standard and achieving the discharge are needed.
Disclosure of Invention
Aiming at the problems, the inventor explores and researches for many years, and aims to provide a reducing agent gasification type SNCR method denitration device which is suitable for furnace denitration in which a plurality of pipelines are arranged in a furnace, water is not allowed to be sprayed into the furnace, corrosion in the furnace is avoided, ammonia nitrogen gas flows in the furnace are mixed unevenly, and the conventional SNCR is not suitable for the furnace denitration, and the device has the advantages of relatively small energy consumption and good denitration effect.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a reducing agent gasification type SNCR method denitration device comprises a reducing agent supply assembly, a reducing agent gasification assembly, a reducing agent dilution assembly and a reducing agent distribution injection grid assembly; the reducing agent supply assembly is connected with the reducing agent gasification assembly, the reducing agent gasification assembly is connected with the reducing agent dilution assembly, the reducing agent dilution assembly is connected with the reducing agent distribution injection grid assembly, and the reducing agent distribution injection grid assembly is arranged in the furnace.
Further, the reducing agent supply assembly includes: a reductant storage tank.
Further, the reducing agent supply assembly includes: a reducing agent preparation tank, a reducing agent storage tank and a conveying pipeline thereof.
Further, the reductant gasification assembly includes: the gasification tank is heated.
Further, the reductant dilution assembly includes: a mixing dilution tank.
Further, the reductant dispensing injection grid assembly includes: an ejector or a grille.
Further, the reductant gasification assembly and the reductant dilution assembly are completed in one assembly.
Further, the reductant gasification dilution assembly is connected to a reductant dispensing injection grid assembly that performs denitration within the furnace.
The reducing agent gasification type SNCR method denitration device is suitable for denitration in a furnace, which has more pipelines in the furnace, does not allow water to be sprayed into the furnace, avoids corrosion in the furnace, ensures that ammonia nitrogen flows in the furnace are mixed unevenly, is not suitable for denitration in the furnace by adopting conventional SNCR, and has smaller energy consumption and good denitration effect.
Drawings
Fig. 1 is a schematic structural diagram of a reducing agent gasification type SNCR denitration device according to the present utility model.
Description of the embodiments
Referring to fig. 1, a reductant gasification type SNCR process denitration device includes a reductant supply assembly 1, a reductant gasification assembly 2, a reductant dilution assembly 3, and a reductant dispensing injection grid assembly 4; the reducing agent supply assembly 1 is connected with the reducing agent gasification assembly 2, the reducing agent gasification assembly 2 is connected with the reducing agent dilution assembly 3, the reducing agent dilution assembly 3 is connected with the reducing agent distribution injection grid assembly 4, and the reducing agent distribution injection grid assembly 4 performs denitration in the furnace.
Further, the reducing agent supply assembly 1 assembly includes: a reducing agent storage tank 1a.
Further, the reducing agent supply assembly 1 assembly includes a reducing agent preparation tank 1c, a reducing agent storage tank 1a, and a transfer pipe 1b thereof.
Further, the reductant gasification assembly 2 assembly includes: the reducing agent is gasified from a liquid state or other forms into a gaseous state.
Further, the reductant dilution assembly 3 assembly includes: and the reducing agent is gasified or mixed with dilution gas, air or other gases in the gasification process to achieve the purpose of dilution.
Further, the reductant dispensing injection grid assembly 4 assembly includes: the reducing agent is gasified and diluted, then is distributed and enters an injector or a grid form to enter the furnace for denitration.
Further, the reductant gasification assembly 2 and the reductant dilution assembly 3 are completed in one assembly.
Further, the reductant gasification dilution module 2 is connected to a reductant dispensing injection grid module 4, the reductant dispensing injection grid module 4 performing denitration within the furnace.
The utility model relates to a reducing agent gasification type SNCR method denitration device, which is operated according to the following steps:
step one: directly purchasing the directly usable reducing agent to store in the reducing agent storage tank 1a or purchasing the reducing agent to be prepared in the reducing agent preparation tank 1c and then transferring the reducing agent to the reducing agent storage tank 1 a;
step two: the reducing agent is supplied from the reducing agent storage tank 1a to the reducing agent vaporizing unit 2, where the reducing agent is vaporized.
Step three: the gasified reducing agent enters a reducing agent diluting component 3, wherein the reducing agent is diluted into a diluting gas with a certain concentration, or the diluting gas with a certain concentration is diluted in the gasifying component during gasification, or the gas with a certain concentration is not required to be diluted after the reducing agent is gasified;
step four: the reducing agent gas diluted or brought to a certain concentration is first distributed into the branch injection grid guns in the reducing agent distribution injection grid assembly 4, and the reducing agent is injected into the furnace through the injection grid guns. And (3) fully mixing and reacting the reducing agent and the flue gas in the furnace, wherein the reducing agent reduces NOX in the flue gas into non-toxic harmless non-secondary pollution N2 which is discharged along with the flue gas through a chimney.
The reducing agent gasification type SNCR method denitration device is suitable for denitration in a furnace, which has more pipelines in the furnace, does not allow water to be sprayed into the furnace, avoids corrosion in the furnace, ensures that ammonia nitrogen flows in the furnace are mixed unevenly, is not suitable for denitration in the furnace by adopting conventional SNCR, and has smaller energy consumption and good denitration effect.
Claims (8)
1. A reducing agent gasification type SNCR method denitration device is characterized in that: comprises a reducing agent supply assembly, a reducing agent gasification assembly, a reducing agent dilution assembly and a reducing agent distribution injection grid assembly; the reducing agent supply assembly is connected with the reducing agent gasification assembly, the reducing agent gasification assembly is connected with the reducing agent dilution assembly, the reducing agent dilution assembly is connected with the reducing agent distribution injection grid assembly, and the reducing agent distribution injection grid assembly is arranged in the furnace.
2. The reducing agent gasification type SNCR method denitration device as set forth in claim 1, wherein: the reductant supply assembly includes: a reductant storage tank.
3. The reducing agent gasification type SNCR method denitration device as set forth in claim 1, wherein: the reductant supply assembly includes: a reducing agent preparation tank, a reducing agent storage tank and a conveying pipeline thereof.
4. The reducing agent gasification type SNCR method denitration device as set forth in claim 1, wherein: the reductant gasification assembly includes: the gasification tank is heated.
5. The reducing agent gasification type SNCR method denitration device as set forth in claim 1, wherein: the reductant dilution assembly includes: a mixing dilution tank.
6. The reducing agent gasification type SNCR method denitration device as set forth in claim 1, wherein: the reductant dispensing injection grid assembly includes: an ejector or a grille.
7. The reducing agent gasification type SNCR method denitration device as set forth in claim 1, wherein: the reductant gasification assembly and the reductant dilution assembly are completed in one assembly.
8. The reducing agent gasification type SNCR method denitration device as set forth in claim 1, wherein: the reductant gasification dilution assembly is connected to a reductant dispensing injection grid assembly that performs denitration within the furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320547133.5U CN219764968U (en) | 2023-03-20 | 2023-03-20 | Reducing agent gasification type SNCR (selective non-catalytic reduction) method denitration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320547133.5U CN219764968U (en) | 2023-03-20 | 2023-03-20 | Reducing agent gasification type SNCR (selective non-catalytic reduction) method denitration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219764968U true CN219764968U (en) | 2023-09-29 |
Family
ID=88106153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320547133.5U Active CN219764968U (en) | 2023-03-20 | 2023-03-20 | Reducing agent gasification type SNCR (selective non-catalytic reduction) method denitration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219764968U (en) |
-
2023
- 2023-03-20 CN CN202320547133.5U patent/CN219764968U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104190253A (en) | Coke oven flue gas SCR denitration system | |
| CN204555717U (en) | Warm flue gas SCR denitration device in a kind of cement kiln end | |
| CN207680368U (en) | A kind of equipment for denitrifying flue gas based on temperature-compensating | |
| CN204073849U (en) | Coke oven flue gas SCR denitration system | |
| CN207680068U (en) | A kind of denitrating flue gas ammonium hydroxide vapo(u)rization system | |
| CN107261837A (en) | It is a kind of to quote denitrification apparatus and technique that high-temperature flue gas carries out urea pyrolysis ammonia | |
| CN104587830A (en) | Urea solution intra-flue direct injection pyrolysis device and method with SCR (Selective Catalytic Reduction) system | |
| CN205392184U (en) | Small -size gas boiler flue gas low temperature catalytic denitrification system | |
| CN103611411A (en) | Dry denitration processing device in furnace | |
| CN203316010U (en) | Flue gas denitration system with SCR and SNCR coupled | |
| CN219764968U (en) | Reducing agent gasification type SNCR (selective non-catalytic reduction) method denitration device | |
| CN204543995U (en) | A kind of cement kiln end low-temperature smoke air SCR denitrification apparatus | |
| CN203342651U (en) | Urea pyrolysis and SCR (selective catalytic reduction) flue gas denitrification device | |
| CN207680333U (en) | Urea direct-injection SNCR+SCR flue gas denitrification systems | |
| CN204447709U (en) | A kind of SNCR denitration system | |
| CN203525562U (en) | Selective non-catalytic reduction (SNCR) denitration device | |
| CN213348376U (en) | High-efficient SNCR deNOx systems of biomass boiler | |
| CN214513793U (en) | Gasification injection system for boiler denitration | |
| CN202113779U (en) | Spiral-flow type ammonia spraying device used for SCR (Selective Catalytic Reduction) denitration system | |
| CN211896058U (en) | Urea pyrolysis system | |
| CN211098339U (en) | Flue gas deep denitration device for coal-fired boiler | |
| CN204429102U (en) | A kind of utilization in the urea liquid flue of SCR system directly sprays pyrolysis installation | |
| CN206240304U (en) | A kind of system of denitration of boiler smoke | |
| CN202387364U (en) | Efficient denitrification device of pulverized coal boiler | |
| CN202675299U (en) | Device for combusting nitrogen-containing organic wastes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |