CN204973599U - Online recycle and regeneration device of SCR reactor - Google Patents
Online recycle and regeneration device of SCR reactor Download PDFInfo
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- CN204973599U CN204973599U CN201520696674.XU CN201520696674U CN204973599U CN 204973599 U CN204973599 U CN 204973599U CN 201520696674 U CN201520696674 U CN 201520696674U CN 204973599 U CN204973599 U CN 204973599U
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Abstract
The utility model provides an online recycle and regeneration device of SCR reactor, including the flue gas structure that flow equalizes, a plurality of SCR reactors and inert gas supply system, the import that the flue gas flow equalizes the structure corresponds the access connection with a plurality of SCR reactors respectively with flue gas admission line intercommunication, a plurality of repositions of redundant personnel export, and sets up the air intake valve on a plurality of connecting lines respectively, the export of a plurality of SCR reactors respectively with the flue gas pipeline intercommunication of giving vent to anger, set up the valve of giving vent to anger on the pipeline of a plurality of intercommunications respectively, the import department at every SCR reactor is fixed respectively to the inert gas jet of inert gas supply system. The utility model discloses in, when the SCR reactor need be regenerated, regenerate to one of them earlier, remaining SCR reactor can continue to use, one by one the SCR reactor regenerate can, consequently, need not during regeneration to suspend production, guaranteed production in succession, the operating duration who has prolonged the SCR system has greatly saved the running cost.
Description
Technical field
The utility model relates to SCR reactor technology field, especially relates to the online cyclic regeneration device of SCR reactor.
Background technology
Catalyst is the core of SCR denitration technology, and its performance directly affects denitration effect.In actual use, especially in the use procedure of sulfur-containing smoke gas condition, progressively decline in the activity of SCR denitration, when its activity can not meet denitration requirement, needs are changed.But the renewal cost of SCR denitration accounts for about 50% of whole system total price, the regeneration therefore for SCR denitration is treated as research emphasis.
At present, in the regeneration means of SCR denitration, great majority process after SCR denitration being dismantled from reactor, this mode not only needs the running stopping SCR reactor assembly, expends time in, and catalyst easily weares and teares and also reduces service life in releasably process.Although also there is on-line regeneration facility, still need the running stopping SCR reactor assembly, after waiting regeneration to complete, then opened SCR reactor assembly, interrupted production, caused economic loss.
Utility model content
The purpose of this utility model is to provide the online cyclic regeneration device of SCR reactor, and solving the existence of existing SCR reactor on-line regeneration facility needs breaks in production to carry out the technical problem regenerated.
In order to achieve the above object, the utility model provides following technical scheme:
The online cyclic regeneration device of SCR reactor, comprises flue gas flow equalizing structural member, multiple SCR reactor and inert gas supply system; The import of described flue gas flow equalizing structural member is communicated with smoke inlet pipe road, and multiple shunting outlet is corresponding to be respectively connected with the import of multiple SCR reactor, and multiple connecting line arranges air intake valve respectively; The outlet of described multiple SCR reactor is communicated with flue gas outlet pipe respectively, and the pipeline of multiple connection sets out air valve respectively; The inert gas jet of described inert gas supply system is separately fixed at the import department of each SCR reactor.
Further, described flue gas flow equalizing structural member comprises expansion stream centrum, mix cylinder, contraction centrum and multi-pipeline interface structure part, and one end of described mix cylinder is communicated with the described big opening end flowing centrum that expands, and the other end is communicated with the described big opening end shrinking centrum; The described osculum end expanding stream centrum is communicated with smoke inlet pipe road; The osculum end of described contraction centrum is fixedly connected with described multi-pipeline interface structure part, forms multiple diffluence pass.
Described flue gas flow equalizing structural member can use pottery or high-temperature alloy to make.
Further, also purging system is comprised; The purging end of described purging system is separately fixed at above the SCR catalyst of multiple SCR inside reactor.
Particularly, described SCR catalyst adopts honeycomb-shaped SCR catalyst, the air-out direction of purging end of described purging system and the axial consistent of the honeycomb hole of SCR catalyst.
Further, also comprise heating system, the fire end of described heating system is separately fixed at described multiple SCR inside reactor.Be specially adapted to the regeneration of the SCR reactor in low-temperature SCR catalyst treatment process.
Further, also comprise multiple temperature control system, the temperature monitoring end corresponding import department being fixed on described multiple SCR reactor respectively of described multiple temperature control system, output is connected with the control end of described heating system; When the temperature that temperature monitoring end monitors the import department of SCR reactor is higher than setting value, output controls heating system and stops heating; When the temperature that temperature monitoring end monitors the import department of SCR reactor is lower than setting value, output controls heating system and starts heating.
Particularly, described heating system adopts electric heater unit, and described electric heater unit can use electric heating sheets or electric heating tube.
Further, it is the NH of 3% that the inert gas in described inert gas supply system adopts containing volume fraction
3argon gas or nitrogen.
The online cyclic regeneration device of SCR reactor of the present utility model, utilize flue gas flow equalizing structural member, be multiple tributary by the pending flue gas flow equalizing entering SCR reactor, flow into respectively in corresponding SCR reactor, and pass into inert gas and carry out thermal reduction reaction, complete the regeneration of SCR catalyst.When SCR reactor needs regeneration, first regenerate one of them, remaining SCR reactor can continue to use, and SCR reactor carries out regenerating one by one, therefore, without the need to breaks in production during regeneration, ensure that the continuous of production.And in-situ heat reducing/regenerating can be realized, solve the problem that the regeneration of existing SCR reactor needs SCR catalyst to carry out the consuming time and wearing and tearing of agent that dismounting brings.Therefore, the online cyclic regeneration device of SCR reactor of the present utility model achieves online circular regeneration, and the running time that substantially prolongs SCR system saves operating cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the online cyclic regeneration device of SCR reactor of the present utility model;
Fig. 2 is the sectional view of the multi-pipeline interface structure part in flue gas flow equalizing structural member.
Detailed description of the invention
Below in conjunction with accompanying drawing of the present utility model, be clearly and completely described the technical solution of the utility model, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
According to Fig. 1, the online cyclic regeneration device of SCR reactor of the present utility model is described, comprises flue gas flow equalizing structural member 1, four SCR reactors 2 and inert gas supply system 3; The import 101 of described flue gas flow equalizing structural member 1 is communicated with smoke inlet pipe road 100, and four shunting outlet 102 difference correspondences are connected with the import of four SCR reactors 2, and four connecting lines arrange air intake valve 21 respectively; The outlet of described four SCR reactors 2 is communicated with flue gas outlet pipe 200 respectively, and four pipelines be communicated with set out air valve 22 respectively; The inert gas jet 31 of described inert gas supply system 3 is separately fixed at the import department of each SCR reactor 2.In described inert gas supply system 3, inert gas source 32 adopts containing volume fraction is the NH of 3%
3argon gas or nitrogen.
The utility model provides a kind of concrete structure of flue gas flow equalizing structural member 1, as shown in Figure 1, described flue gas flow equalizing structural member 1 comprises expansion stream centrum 11, mix cylinder 12, shrinks centrum 13 and multi-pipeline interface structure part 14, described multi-pipeline interface structure part 14 is four pipe joints, and its cross section as shown in Figure 2.One end of described mix cylinder 12 is communicated with the described big opening end flowing centrum 11 that expands, and the other end is communicated with the described big opening end shrinking centrum 13; The described osculum end expanding stream centrum 11 is communicated with smoke inlet pipe road 100; The osculum end of described contraction centrum 13 is fixedly connected with described multi-pipeline interface structure part 14, forms multiple diffluence pass 102.Each parts in flue gas flow equalizing structural member 1 can adopt pottery or high-temperature alloy composition.The concrete structure of certain flue gas flow equalizing structural member 1 of the present utility model is not limited to above-mentioned structure, and every structural member that can realize flue gas flow equalizing object all can be used for the utility model.
In order to be disposed by the solid granule being attached to SCR catalyst surface better, the online cyclic regeneration device of SCR reactor of the present utility model also comprises purging system 4; The purging end 41 of described purging system 4 is separately fixed at above every layer of SCR catalyst of four SCR inside reactors.And described SCR catalyst is as shown in the figure when adopting honeycomb-shaped SCR catalyst, the air-out direction of purging end 41 of described purging system 4 and the axial consistent of the honeycomb hole of SCR catalyst, guarantee purging effect.Wherein, described purging system 4 adopts compressed air as purging source 42, and be easy to get, cost is low.
In the regeneration technology of SCR, in some cases, as in low-temperature SCR Catalytic processes, need to heat SCR catalyst, ensure the carrying out of thermal reduction reaction.Therefore, the online cyclic regeneration device of SCR reactor of the present utility model also comprises four heating system (not shown), and the fire end of described heating system is separately fixed at described four SCR inside reactors.Particularly, described heating system can adopt and use electric heating sheets or electric heating tube to carry out the electric heater unit heated.
In order to the temperature in timely accurately control SCR reactor, the utility model has set up four temperature control systems, the temperature monitoring end corresponding import department being fixed on described four SCR reactors respectively of described four temperature control systems, output is connected with the control end of described electric heater unit; When the temperature that temperature monitoring end monitors the import department of SCR reactor is higher than setting value, output controls electric heater unit and stops heating; When the temperature that temperature monitoring end monitors the import department of SCR reactor is lower than setting value, output controls electric heater unit and starts heating.
The regenerative operation of the online cyclic regeneration device of SCR reactor of the present utility model, specific as follows:
(1) shunting of the import and flue gas flow equalizing structural member 1 of closing one of them SCR reactor 2 exports the air intake valve 21 in 12 connecting pipes, then open the corresponding inert gas jet 31 of inert gas supply system 3, allow inert gas fill this SCR reactor 2.
(2) inert gas filled this SCR reactor after 2 one hours, open corresponding heating system in this SCR reactor 2, and valve 22 of giving vent to anger corresponding for this SCR reactor is adjusted to 1/2 aperture, utilize the temperature control system in this SCR reactor 2 to be 300 DEG C-350 DEG C temperature adjustment control, heat 10h under an inert atmosphere.
(3) close heating system, open the purging system 4 of this SCR reactor 2 inside, purge 2h, afterwards the complete opening of valve 22 furnishing close inert gas jet 31 of giving vent to anger of this SCR reactor 2 correspondence.
(4) progressively carry out regeneration to all the other 3 SCR reactors according to the step of above-mentioned (1) to (3) to process.
Be not limited to four SCR reactors that detailed description of the invention part provides in the utility model, the SCR reactor of at least two is set according to actual needs, then corresponding design flue gas flow equalizing structural member and other system.
The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should described be as the criterion with the protection domain of claim.
Claims (8)
- The online cyclic regeneration device of 1.SCR reactor, is characterized in that: comprise flue gas flow equalizing structural member, multiple SCR reactor and inert gas supply system; The import of described flue gas flow equalizing structural member is communicated with smoke inlet pipe road, and multiple shunting outlet is corresponding to be respectively connected with the import of multiple SCR reactor, and multiple connecting line arranges air intake valve respectively; The outlet of described multiple SCR reactor is communicated with flue gas outlet pipe respectively, and the pipeline of multiple connection sets out air valve respectively; The inert gas jet of described inert gas supply system is separately fixed at the import department of each SCR reactor.
- 2. the online cyclic regeneration device of SCR reactor according to claim 1, it is characterized in that: described flue gas flow equalizing structural member comprises expansion stream centrum, mix cylinder, contraction centrum and multi-pipeline interface structure part, one end of described mix cylinder is communicated with the described big opening end flowing centrum that expands, and the other end is communicated with the described big opening end shrinking centrum; The described osculum end expanding stream centrum is communicated with smoke inlet pipe road; The osculum end of described contraction centrum is fixedly connected with described multi-pipeline interface structure part, forms multiple diffluence pass.
- 3. the online cyclic regeneration device of SCR reactor according to claims 1 or 2, is characterized in that: also comprise purging system; The purging end of described purging system is separately fixed at above the SCR catalyst of multiple SCR inside reactor.
- 4. the online cyclic regeneration device of SCR reactor according to claim 3, is characterized in that: described SCR catalyst adopts honeycomb-shaped SCR catalyst, the air-out direction of purging end of described purging system and the axial consistent of the honeycomb hole of SCR catalyst.
- 5. the online cyclic regeneration device of SCR reactor according to claim 1,2 or 4, is characterized in that: also comprise heating system, and the fire end of described heating system is separately fixed at described multiple SCR inside reactor.
- 6. the online cyclic regeneration device of SCR reactor according to claim 5, it is characterized in that: also comprise multiple temperature control system, the temperature monitoring end corresponding import department being fixed on described multiple SCR reactor respectively of described multiple temperature control system, output is connected with the control end of described heating system; When the temperature that temperature monitoring end monitors the import department of SCR reactor is higher than setting value, output controls heating system and stops heating; When the temperature that temperature monitoring end monitors the import department of SCR reactor is lower than setting value, output controls heating system and starts heating.
- 7. the online cyclic regeneration device of SCR reactor according to claim 5, is characterized in that: described heating system adopts electric heater unit, and described electric heater unit uses electric heating sheets or electric heating tube.
- 8. the online cyclic regeneration device of SCR reactor according to claim 1,2,4,6 or 7, is characterized in that: it is the NH of 3% that the inert gas in described inert gas supply system adopts containing volume fraction 3argon gas or nitrogen.
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| CN201520696674.XU CN204973599U (en) | 2015-09-09 | 2015-09-09 | Online recycle and regeneration device of SCR reactor |
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| CN201520696674.XU CN204973599U (en) | 2015-09-09 | 2015-09-09 | Online recycle and regeneration device of SCR reactor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106925112A (en) * | 2017-04-26 | 2017-07-07 | 安徽瑞邦生物科技有限公司 | Tail gas from incinerator processing system |
| CN107088365A (en) * | 2017-05-15 | 2017-08-25 | 大唐环境产业集团股份有限公司 | A kind of Y types SCR system catalyst on-line continuous regenerating unit |
| CN109789372A (en) * | 2016-09-26 | 2019-05-21 | 国际壳牌研究有限公司 | The method for reducing nitrogen oxide compound |
| CN112169581A (en) * | 2019-07-04 | 2021-01-05 | 中冶长天国际工程有限责任公司 | Flue gas treatment method and system for on-line regeneration of SCR (Selective catalytic reduction) catalyst |
| CN113042020A (en) * | 2021-04-01 | 2021-06-29 | 北京卡达克汽车检测技术中心有限公司 | Desorption device for RDE detection, desorption method and screening method thereof |
| US11471831B2 (en) | 2016-09-26 | 2022-10-18 | Shell Usa, Inc. | Method of regenerating a deNOx catalyst |
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2015
- 2015-09-09 CN CN201520696674.XU patent/CN204973599U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109789372A (en) * | 2016-09-26 | 2019-05-21 | 国际壳牌研究有限公司 | The method for reducing nitrogen oxide compound |
| US11471831B2 (en) | 2016-09-26 | 2022-10-18 | Shell Usa, Inc. | Method of regenerating a deNOx catalyst |
| CN106925112A (en) * | 2017-04-26 | 2017-07-07 | 安徽瑞邦生物科技有限公司 | Tail gas from incinerator processing system |
| CN106925112B (en) * | 2017-04-26 | 2022-12-27 | 安徽瑞邦生物科技有限公司 | Incinerator tail gas treatment system |
| CN107088365A (en) * | 2017-05-15 | 2017-08-25 | 大唐环境产业集团股份有限公司 | A kind of Y types SCR system catalyst on-line continuous regenerating unit |
| CN112169581A (en) * | 2019-07-04 | 2021-01-05 | 中冶长天国际工程有限责任公司 | Flue gas treatment method and system for on-line regeneration of SCR (Selective catalytic reduction) catalyst |
| CN112169581B (en) * | 2019-07-04 | 2023-03-17 | 中冶长天国际工程有限责任公司 | Flue gas treatment method and system for on-line regeneration of SCR (Selective catalytic reduction) catalyst |
| CN113042020A (en) * | 2021-04-01 | 2021-06-29 | 北京卡达克汽车检测技术中心有限公司 | Desorption device for RDE detection, desorption method and screening method thereof |
| CN113042020B (en) * | 2021-04-01 | 2023-08-15 | 中汽科技(北京)有限公司 | Desorption device for RDE detection, desorption method and screening method thereof |
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