CN103691292A - SNCR denitration system of circulating fluidized bed boiler based on flow-state reconstruction - Google Patents
SNCR denitration system of circulating fluidized bed boiler based on flow-state reconstruction Download PDFInfo
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- CN103691292A CN103691292A CN201310726908.6A CN201310726908A CN103691292A CN 103691292 A CN103691292 A CN 103691292A CN 201310726908 A CN201310726908 A CN 201310726908A CN 103691292 A CN103691292 A CN 103691292A
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Abstract
The invention belongs to the technical field of SNCR (Selective Non-Catalytic Reduction) denitration devices of circulating fluidized bed boiler equipment and particularly relates to an SNCR denitration system of a circulating fluidized bed boiler based on flow-state reconstruction. The SNCR denitration system mainly solves the problems of high investment cost and running cost and low denitration efficiency existed in the denitration of the existing boiler. The technical scheme is that the SNCR denitration system comprises a circulating fluidized bed boiler hearth and a circulating fluidized bed boiler separator, as well as an ammonia water unloading and storing system, an ammonia water diluted water delivery system, a mixing and distributing system, a spray injection system and a test system; ammonia water is delivered from a tank wagon to an ammonia water storage tank through a pipeline and an ammonia unloading pump for storing; the test system belongs to a CEMS (Continuous Emission Monitoring System) test system, and an input end of the CEMS test system is connected with the circulating fluidized bed boiler separator. The SNCR denitration system has the advantages of low cost and good denitration effect.
Description
Technical field
The invention belongs to Circulating Fluidized Bed Boiler Equipment SNCR denitrification apparatus technical field, be specifically related to a kind of CFBB SNCR denitrating system based on fluidised form reconstruct.
Background technology
Along with national < < fossil-fuel power plant atmospheric pollutant emission standard > > GB13223-2011 issuing and implementation, require flue dust, sulfur dioxide, nitrogen oxide, the mercury and mercuric compounds discharge of coal-burning boiler all will reach limit value.For discharged nitrous oxides, conventional denitrating system is only to remove for the single of boiler emission, and the source boiler not producing from pollution sources exists investment cost, operating cost is high, denitration efficiency is low problem.
Summary of the invention
There is investment cost, operating cost is high, denitration efficiency is low problem mainly for current Denitration in Boiler in the present invention, a kind of CFBB SNCR denitrating system based on fluidised form reconstruct is provided.
The present invention addresses the above problem the technical scheme of taking to be:
A kind of CFBB SNCR denitrating system based on fluidised form reconstruct, comprise boiler hearth of circulating fluidized bed, circulating fluidized bed boiler separator, wherein: also comprise ammoniacal liquor discharging and stocking system, ammoniacal liquor dilution water induction system, mixing and dispensing system, spraying system and test macro, described ammoniacal liquor discharging and stocking system be by unloading ammonia pump and tank used for storing ammonia forms, and ammoniacal liquor is by pipeline and unload ammonia pump and be transported in tank used for storing ammonia and store from tank car; Described ammoniacal liquor dilution water induction system is comprised of ammoniacal liquor delivery pump and dilution water delivery pump, and described ammoniacal liquor delivery pump is connected with tank used for storing ammonia by pipeline, and dilution water delivery pump is connected with salt solution by pipeline; Described mixing and dispensing system is comprised of static mixer and distributor, and the input of static mixer is connected with dilution water delivery pump with ammoniacal liquor delivery pump by pipeline, and the output of static mixer is connected with the entrance of distributor by pipeline; Described spraying system is comprised of spray gun and compressed air piping, and spray gun is connected with compressed air piping with the outlet of distributor; Described test macro is CEMS test macro, and the input of CEMS test macro is connected with circulating fluidized bed boiler separator, and circulating fluidized bed boiler separator is connected with the flue outlet place of boiler hearth of circulating fluidized bed.
The present invention adopts technique scheme, CFBB SNCR denitrating system based on fluidised form reconstruct is first from producing the source of pollution sources, furnace outlet separator inlet and SNCR denitrating system join, separator is as SNCR denitration chemical reaction field, by the optimization of boiler performance design and operation parameter, when guaranteeing efficient burning, reduce the original discharge of nitrogen oxide, again by efficient SNCR denitrification apparatus is set in boiler separator import department, can be very easy to reach discharge standard, there is the advantage that denitration efficiency is high, operating cost is low.Therefore, compared with prior art, the advantages such as 1, the present invention adopts the CFBB excess air of fluidised form reconstruct little, fire box temperature is reasonable, fire box temperature is even, air distribution mode is unique, bed grain particle diameter attenuates, make the original discharge of nitrogen oxide reduce more than 20% than conventional boiler, therefore ammoniacal liquor consumption reduces greatly, on average reduces more than 50%; 2, system of the present invention have advantages of reliable and stable, automatization level is high, operating cost is low, nitrogen oxide NOx minimum discharge index.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
Embodiment 1
As shown in Figure 1, a kind of CFBB SNCR denitrating system based on fluidised form reconstruct, comprise boiler hearth of circulating fluidized bed 6, circulating fluidized bed boiler separator 7, wherein: also comprise ammoniacal liquor discharging and stocking system 1, ammoniacal liquor dilution water induction system 2, mixing and dispensing system 3, spraying system 4 and test macro 5, described ammoniacal liquor discharging and stocking system 1 be by unloading ammonia pump 8 and tank used for storing ammonia 9 forms, and ammoniacal liquor is by pipeline 10 and unload ammonia pump 8 from tank car 11, to be transported to the interior storage of tank used for storing ammonia 9 stand-by; Described ammoniacal liquor dilution water induction system 2 is comprised of ammoniacal liquor delivery pump 12 and dilution water delivery pump 13, described ammoniacal liquor delivery pump 12 is connected with tank used for storing ammonia 9 by pipeline 10, dilution water delivery pump 13 is connected with salt solution by pipeline 10, and this system is for being transported to mixing and dispensing system 3 the ammoniacal liquor and the dilution water that are stored in tank used for storing ammonia 9; Described mixing and dispensing system 3 is comprised of static mixer 14 and distributor 15, the input of static mixer 14 is connected with dilution water delivery pump 13 with ammoniacal liquor delivery pump 12 by pipeline 10, the output of static mixer 14 is connected with the entrance of distributor 15 by pipeline 10, this system is used for carrying out the mixing of ammoniacal liquor and dilution water, and mixed liquor is evenly distributed to spraying system 4;
Described spraying system 4 is comprised of spray gun 16 and compressed air piping 17, spray gun 16 is connected with compressed air piping 17 with the outlet of distributor 15, this system is used for spraying mixed liquor, there is chemical reaction with NOx in flue gas, remove NOx in flue gas, it is circulating fluidized bed boiler separator 7 entrance areas that eject position is chosen in boiler hearth of circulating fluidized bed outlet; Described test macro 5 is CEMS test macros 18, and the input of CEMS test macro 18 is connected with circulating fluidized bed boiler separator 7, for on-line testing flue gas nitrogen oxide NOx concentration; Circulating fluidized bed boiler separator 7 is connected with the flue outlet place of boiler hearth of circulating fluidized bed 6.
Claims (1)
1. the CFBB SNCR denitrating system based on fluidised form reconstruct, comprise boiler hearth of circulating fluidized bed (6), circulating fluidized bed boiler separator (7), it is characterized in that: also comprise ammoniacal liquor discharging and stocking system (1), ammoniacal liquor dilution water induction system (2), mixing and dispensing system (3), spraying system (4) and test macro (5), described ammoniacal liquor discharging and stocking system (1) are by unloading ammonia pump (8) and tank used for storing ammonia (9) forms, ammoniacal liquor is by pipeline (10) and unload ammonia pump (8) and be transported in tank used for storing ammonia (9) and store from tank car (11), described ammoniacal liquor dilution water induction system (2) is comprised of ammoniacal liquor delivery pump (12) and dilution water delivery pump (13), described ammoniacal liquor delivery pump (12) is connected with tank used for storing ammonia (9) by pipeline (10), and dilution water delivery pump (13) is connected with salt solution by pipeline (10), described mixing and dispensing system (3) is comprised of static mixer (14) and distributor (15), the input of static mixer (14) is connected with dilution water delivery pump (13) with ammoniacal liquor delivery pump (12) by pipeline (10), and the output of static mixer (14) is connected with the entrance of distributor (15) by pipeline (10), described spraying system (4) is comprised of spray gun (16) and compressed air piping (17), and spray gun (16) is connected with compressed air piping (17) with the outlet of distributor (15), described test macro (5) is CEMS test macro (18), the input of CEMS test macro (18) is connected with circulating fluidized bed boiler separator (7), and circulating fluidized bed boiler separator (7) is connected with the flue outlet place of boiler hearth of circulating fluidized bed (6).
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| CN201310726908.6A CN103691292A (en) | 2013-12-25 | 2013-12-25 | SNCR denitration system of circulating fluidized bed boiler based on flow-state reconstruction |
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| CN201310726908.6A CN103691292A (en) | 2013-12-25 | 2013-12-25 | SNCR denitration system of circulating fluidized bed boiler based on flow-state reconstruction |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190237A (en) * | 2014-09-09 | 2014-12-10 | 兖矿国泰化工有限公司 | Circulating fluidized bed boiler denitration method |
| CN105570882A (en) * | 2016-02-29 | 2016-05-11 | 太原锅炉集团有限公司 | Ultralow emission type circulating fluidized bed boiler system based on flow-state secondary reconstruction |
| CN107238093A (en) * | 2017-07-18 | 2017-10-10 | 太原锅炉集团有限公司 | Adsorb denitration CFBB and its operation method |
| CN107486004A (en) * | 2017-09-13 | 2017-12-19 | 佛山华清智业环保科技有限公司 | A kind of method and its device of the denitration of spray drying tower intelligence |
| CN112675692A (en) * | 2020-12-29 | 2021-04-20 | 西安交通大学 | Red mud harmless treatment system based on circulating fluidized bed boiler and working method thereof |
| CN114797435A (en) * | 2022-05-17 | 2022-07-29 | 合肥中亚环保科技有限公司 | SNCR (selective non-catalytic reduction) denitration system for circulating fluidized bed boiler |
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| CN202700347U (en) * | 2012-06-29 | 2013-01-30 | 邹庆泉 | Smoke selective non-catalytic reduction (SNCR) denitration complete plant |
| CN203082866U (en) * | 2013-02-04 | 2013-07-24 | 太原锅炉集团有限公司 | Fluid-reconstruction-based circulating fluidized bed boiler capable of controlling nitrogen oxide |
| CN203648380U (en) * | 2013-12-25 | 2014-06-18 | 太原锅炉集团有限公司 | SNCR (Selective Non-Catalytic Reduction) denitration system of circulating fluidized bed boiler based on flow-state reconstruction |
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2013
- 2013-12-25 CN CN201310726908.6A patent/CN103691292A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202700347U (en) * | 2012-06-29 | 2013-01-30 | 邹庆泉 | Smoke selective non-catalytic reduction (SNCR) denitration complete plant |
| CN203082866U (en) * | 2013-02-04 | 2013-07-24 | 太原锅炉集团有限公司 | Fluid-reconstruction-based circulating fluidized bed boiler capable of controlling nitrogen oxide |
| CN203648380U (en) * | 2013-12-25 | 2014-06-18 | 太原锅炉集团有限公司 | SNCR (Selective Non-Catalytic Reduction) denitration system of circulating fluidized bed boiler based on flow-state reconstruction |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190237A (en) * | 2014-09-09 | 2014-12-10 | 兖矿国泰化工有限公司 | Circulating fluidized bed boiler denitration method |
| CN105570882A (en) * | 2016-02-29 | 2016-05-11 | 太原锅炉集团有限公司 | Ultralow emission type circulating fluidized bed boiler system based on flow-state secondary reconstruction |
| CN107238093A (en) * | 2017-07-18 | 2017-10-10 | 太原锅炉集团有限公司 | Adsorb denitration CFBB and its operation method |
| CN107238093B (en) * | 2017-07-18 | 2023-12-01 | 太原锅炉集团有限公司 | Adsorption denitration circulating fluidized bed boiler and operation method thereof |
| CN107486004A (en) * | 2017-09-13 | 2017-12-19 | 佛山华清智业环保科技有限公司 | A kind of method and its device of the denitration of spray drying tower intelligence |
| CN112675692A (en) * | 2020-12-29 | 2021-04-20 | 西安交通大学 | Red mud harmless treatment system based on circulating fluidized bed boiler and working method thereof |
| CN112675692B (en) * | 2020-12-29 | 2022-02-22 | 西安交通大学 | Red mud harmless treatment system based on circulating fluidized bed boiler and working method thereof |
| CN114797435A (en) * | 2022-05-17 | 2022-07-29 | 合肥中亚环保科技有限公司 | SNCR (selective non-catalytic reduction) denitration system for circulating fluidized bed boiler |
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Application publication date: 20140402 |