CN202893190U - Novel high-efficiency SCR (selective catalytic reduction) denitration catalyst soot blower - Google Patents
Novel high-efficiency SCR (selective catalytic reduction) denitration catalyst soot blower Download PDFInfo
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- CN202893190U CN202893190U CN 201220619225 CN201220619225U CN202893190U CN 202893190 U CN202893190 U CN 202893190U CN 201220619225 CN201220619225 CN 201220619225 CN 201220619225 U CN201220619225 U CN 201220619225U CN 202893190 U CN202893190 U CN 202893190U
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Abstract
The utility model relates to a novel high-efficiency SCR (selective catalytic reduction) denitration catalyst soot blower. The novel high-efficiency SCR denitration catalyst soot blower comprises an SCR rector (8) and is characterized in that a pair of guide rails (6) is arranged above each catalyst bed layer (7) in the SCR reactor (8), each pair of guide rails (6) is provided with a group of movable rakes (4), each movable rack (4) is provided with more than one nozzle (5), each group of movable rakes (4) is simultaneously communicated with an air pipe (3), and the air pipe (3) is communicated with one pressure-stabilizing air tank (1) and is further provided with a control valve (2) for controlling the communication of the air pipe and the pressure-stabilizing air tank. The novel high-efficiency SCR denitration catalyst soot blower disclosed by the utility model has the advantages that compressed air is used for blowing soot so that the soot blowing energy is strong and remarkable effect for blowing the soot with strong clinkering property and stickiness is realized; the soot is blown by the compressed air and is subjected to smoke pre-heating after SCR denitration so as to reduce the energy consumption; and a purpose of cleaning the soot is achieved by utilizing a movable rake type structure and the special nozzles containing cleaning catalyst and through the reciprocating movement of a compressed air pipe on the catalyst upper layer.
Description
Technical field
The utility model relates to flue gas processing device, relates in particular to a kind of new and effective SCR denitrating catalyst soot blower.
Background technology
At present, selective catalytic reduction (SCR) is most widely used gas denitrifying technology, and the SCR catalyst is the core of SCR flue gas denitrification system.Owing to contain dust in the flue gas, flue gas during by beds dust can be deposited on catalyst surface, the blocking catalyst duct reduces denitration efficiency.In order to prevent the catalyst layer dust stratification, improve denitration efficiency, need to fill soot blower at every layer of catalyst.Soot blower commonly used has acoustic wave ash ejector, steam sootblower and compressed air soot-blowing.But it is not high that engineering practice proof acoustic wave ash ejector blows grey intensity, little for the dust stratification effect that slagging scorification and viscosity are strong, be not suitable for the ash that blows of small aperture catalyst, and result of use is unstable.Steam sootblower has increased smoke moisture, and the accelerator activator inactivation affects catalyst service life.
The utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of new and effective SCR denitrating catalyst soot blower, adopt the nozzle of mobile rake structure and clean catalysis agent, in the moving around of catalyst upper strata, reach the purpose of dust out by compressed air line.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of new and effective SCR denitrating catalyst soot blower, comprise the SCR reactor, the top position of every layer of beds in the SCR reactor is provided with pair of guide rails, every pair of guide rail is provided with one group and moves rake, each moves rake and is provided with more than one nozzle, one group is moved rake and is communicated with air duct simultaneously, and air duct is communicated with a regulated air tank, also is provided with a control valve on the air duct and controls air duct and be communicated with the regulated air tank.
On the basis of above-mentioned main technical schemes, can increase following further perfect technical scheme:
Described air duct is provided with one section irregular bending part in the SCR reactor, in advance compressed air is carried out preheating.
Described mobile rake is across the straight tube above beds, and the position of the corresponding guide rail of straight tube is provided with slide block, and the middle part of straight tube is provided with a vertical tube connector of placing and is connected with air duct.
The utility model has the advantages that the use compressed air soot-blowing, it is large to blow grey energy, and the ash by force and sticking to clinkering property has positive effect; Blow ash and utilize smoke pre-heating after the SCR denitration with compressed air, reduce energy consumption; With the nozzle of mobile rake structure and special clean catalysis agent, in the moving around of catalyst upper strata, reach the purpose of dust out by compressed air line; This soot blower system effect stability, it is large to blow grey energy, and flexible structure moves around, and can not leave the dead band.
Below in conjunction with drawings and Examples the utility model is further specified.
Description of drawings:
Fig. 1 is front view of the present utility model
Fig. 2 is the A-A cutaway view of the utility model Fig. 1.
The specific embodiment
As shown in Figure 1, a kind of new and effective SCR denitrating catalyst soot blower, comprise SCR reactor (8), the top position of the every layer of beds (7) in SCR reactor (8) is provided with pair of guide rails (6), every pair of guide rail (6) is provided with a mobile rake (4), as shown in Figure 2, described mobile rake (4) is across the straight tube in beds (7) top, the position of the corresponding guide rail of straight tube is provided with slide block, the middle part of straight tube is provided with a vertical tube connector of placing and is connected with air duct, each moves rake and is provided with more than one nozzle (5), one group is moved rake (4) and is communicated with air duct (3) simultaneously, air duct (3) is communicated with a regulated air tank (1), also being provided with a control valve (2) control air duct (3) on the air duct (3) is communicated with regulated air tank (1), described air duct (3) is provided with one section irregular bending part at SCR reactor (8) inner catalyst bed lower position, in advance compressed air is carried out preheating.
Air in the regulated air tank (1) is from plant area's air compression station, compressed air pressure in regulated air tank (1) is not less than setting value, and when the pressure drop of SCR reactor (8) reaches setting value, control valve (2) is opened automatically, ash is blown in beginning online, regulate compressed-air actuated flow by control valve (2), compressed air carries out preheating through mobile rake (4) in the SCR reactor, sprayed by nozzle (5), mobile rake (4) and nozzle (5) move around together, can blow ash to whole catalyst layer (7), not stay the dead band.
Claims (3)
1. new and effective SCR denitrating catalyst soot blower, comprise SCR reactor (8), it is characterized in that: the top position of the every layer of beds (7) in SCR reactor (8) is provided with pair of guide rails (6), every pair of guide rail (6) is provided with one group and moves rake (4), each moves rake (4) and is provided with more than one nozzle (5), one group is moved rake (4) and is communicated with air duct (3) simultaneously, air duct (3) is communicated with a regulated air tank (1), also is provided with a control valve (2) control air duct on the air duct (3) and is communicated with the regulated air tank.
2. a kind of new and effective SCR denitrating catalyst soot blower according to claim 1, it is characterized in that: described air duct (3) is provided with one section irregular bending part in SCR reactor (8), in advance compressed air is carried out preheating.
3. a kind of new and effective SCR denitrating catalyst soot blower according to claim 1 and 2, it is characterized in that: described mobile rake (4) is across the straight tube above beds, the position of corresponding guide rail is provided with slide block on the straight tube, and the middle part of straight tube is provided with a vertical tube connector of placing and is connected with air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220619225 CN202893190U (en) | 2012-11-21 | 2012-11-21 | Novel high-efficiency SCR (selective catalytic reduction) denitration catalyst soot blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220619225 CN202893190U (en) | 2012-11-21 | 2012-11-21 | Novel high-efficiency SCR (selective catalytic reduction) denitration catalyst soot blower |
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| CN202893190U true CN202893190U (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220619225 Expired - Fee Related CN202893190U (en) | 2012-11-21 | 2012-11-21 | Novel high-efficiency SCR (selective catalytic reduction) denitration catalyst soot blower |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169940A (en) * | 2015-09-14 | 2015-12-23 | 合肥水泥研究设计院 | Ash blowing system for SCR (Selective Catalytic Reduction) denitration reactor of cement kiln |
| CN105865860A (en) * | 2016-05-31 | 2016-08-17 | 邢红涛 | Flue gas detection device used for SCR (Selective Catalytic Reduction) denitration process |
| CN105944563A (en) * | 2016-02-26 | 2016-09-21 | 合肥水泥研究设计院 | Case-type pulse ash blowing system for cement kiln SCR denitration and use method thereof |
| CN107185908A (en) * | 2017-05-10 | 2017-09-22 | 哈尔滨工程大学 | A kind of soot blower and ash-blowing method in denitrating system rectangle reaction unit peculiar to vessel |
| CN107876509A (en) * | 2017-12-28 | 2018-04-06 | 海南中航特玻科技有限公司 | A kind of SCR denitration real-time blow device online |
| CN108246076A (en) * | 2018-02-11 | 2018-07-06 | 苏州海森伯格环保科技有限公司 | A kind of coal-fired plant flue gas comprehensive utilization device |
| CN111974214A (en) * | 2020-08-28 | 2020-11-24 | 上海宝冶集团有限公司 | Soot blowing method of SCR device |
| EP3789722A1 (en) * | 2019-09-03 | 2021-03-10 | Yara International ASA | Reciprocating rake type soot blower system |
| IT202100016304A1 (en) * | 2021-06-22 | 2022-12-22 | Sebenergy Eng | "IMPROVED BIOMASS BOILER FOR USE IN DOMESTIC HEATING AND SIMILAR SYSTEMS" |
-
2012
- 2012-11-21 CN CN 201220619225 patent/CN202893190U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105169940A (en) * | 2015-09-14 | 2015-12-23 | 合肥水泥研究设计院 | Ash blowing system for SCR (Selective Catalytic Reduction) denitration reactor of cement kiln |
| CN105944563A (en) * | 2016-02-26 | 2016-09-21 | 合肥水泥研究设计院 | Case-type pulse ash blowing system for cement kiln SCR denitration and use method thereof |
| CN105865860A (en) * | 2016-05-31 | 2016-08-17 | 邢红涛 | Flue gas detection device used for SCR (Selective Catalytic Reduction) denitration process |
| CN107185908A (en) * | 2017-05-10 | 2017-09-22 | 哈尔滨工程大学 | A kind of soot blower and ash-blowing method in denitrating system rectangle reaction unit peculiar to vessel |
| CN107876509A (en) * | 2017-12-28 | 2018-04-06 | 海南中航特玻科技有限公司 | A kind of SCR denitration real-time blow device online |
| CN108246076A (en) * | 2018-02-11 | 2018-07-06 | 苏州海森伯格环保科技有限公司 | A kind of coal-fired plant flue gas comprehensive utilization device |
| EP3789722A1 (en) * | 2019-09-03 | 2021-03-10 | Yara International ASA | Reciprocating rake type soot blower system |
| WO2021043909A1 (en) | 2019-09-03 | 2021-03-11 | Yara International Asa | Reciprocating rake type soot blower system |
| CN111974214A (en) * | 2020-08-28 | 2020-11-24 | 上海宝冶集团有限公司 | Soot blowing method of SCR device |
| IT202100016304A1 (en) * | 2021-06-22 | 2022-12-22 | Sebenergy Eng | "IMPROVED BIOMASS BOILER FOR USE IN DOMESTIC HEATING AND SIMILAR SYSTEMS" |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20141121 |
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| EXPY | Termination of patent right or utility model |