CN208959499U - A kind of burning power plant flue gas efficient purifying system - Google Patents

A kind of burning power plant flue gas efficient purifying system Download PDF

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Publication number
CN208959499U
CN208959499U CN201821311277.6U CN201821311277U CN208959499U CN 208959499 U CN208959499 U CN 208959499U CN 201821311277 U CN201821311277 U CN 201821311277U CN 208959499 U CN208959499 U CN 208959499U
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China
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flue
level
bag filter
connect
flue gas
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CN201821311277.6U
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刘有方
黄翔
刘贞贞
白锋
张波
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Huaxi Energy Engineering Co Ltd
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Huaxi Energy Engineering Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

Abstract

The utility model discloses a kind of burning power plant flue gas efficient purifying system, solve the problems, such as that the pollution flue gas of garbage incinerating power plant in the prior art is unable to satisfy ultra-clean emission request.The outlet side of level-one mixing flue of the utility model and the entrance of mixer connect, and the flue of inlet end and waste heat boiler that level-one mixes flue connects, and calcium hydroxide injection apparatus is connect through pipeline with level-one mixing flue;The outlet of mixer is connect with the air inlet of the first bag filter, the air outlet of first bag filter mixes flue by second level with the entrance of depickling reactor and connect, and is also connect respectively by pipeline with sodium bicarbonate injection apparatus and active carbon injection apparatus on second level mixing flue;The outlet of depickling reactor is connect with the air inlet flue of the second bag filter, and successively flue connects with chimney for air outlet, SCR reactor, the air-introduced machine of the second bag filter.The utility model can make the pollution flue gas of garbage incinerating power plant meet ultra-clean emission request.

Description

A kind of burning power plant flue gas efficient purifying system
Technical field
The utility model belongs to technical field of waste incineration, and in particular to a kind of burning power plant flue gas high-efficient purification system System.
Background technique
Cleaning treatment system is arranged not only now to meet qualified discharge in the pollution flue gas of garbage incinerating power plant, and Gradually start to be required to meet ultra-clean discharge standard.Currently, burning power plant gas cleaning processing is mainly revolved using SNCR+ Turn spraying semidry process, is limited to the desulfuration efficiency and denitration efficiency of SNCR+ rotating spraying semidry process, pollutant row 2000 standard of European Union only up to be reached (such as: SO by putting concentration index2≤50mg/Nm3, NOx≤200mg/Nm3Deng).If needing to meet Ultra-clean discharge SO2≤35mg/Nm3, NOx≤50mg/Nm3, then need using highly efficient gas cleaning processing technique.
Therefore it provides a kind of burning power plant flue gas efficient purifying system, becomes those skilled in the art and urgently solves Certainly the problem of.
Utility model content
The technical issues of the utility model solves is: providing a kind of burning power plant flue gas efficient purifying system, solves The problem of pollution flue gas of garbage incinerating power plant is unable to satisfy ultra-clean emission request in the prior art.
The technical solution adopted in the utility model is as follows:
A kind of burning power plant flue gas efficient purifying system, including calcium hydroxide injection apparatus, level-one mixing flue, mixing Device, the first bag filter, sodium bicarbonate injection apparatus, active carbon injection apparatus, second level mixing flue, depickling reactor, the Two bag filters, SCR reactor, air-introduced machine and chimney;
Level-one mixes the outlet side of flue and the entrance of mixer connects, and level-one mixes the inlet end and waste heat boiler of flue Flue connection, for be filled with flue gas in mixer, calcium hydroxide injection apparatus to be connect by pipeline with level-one mixing flue, use The calcium hydroxide dry powder for mixing the flue gas in flue with level-one and being mixed is spurted into mixing in flue for level-one;
The outlet of mixer is connect with the air inlet of the first bag filter, the air outlet of the first bag filter and depickling The entrance of reactor mixes flue connection by second level, and second level is mixed and also filled respectively by pipeline and sodium bicarbonate injection on flue It sets and is connected with active carbon injection apparatus;
The outlet of depickling reactor is connect with the air inlet pipeline of the second bag filter, the outlet air of the second bag filter Successively pipeline connects with chimney for mouth, SCR reactor, air-introduced machine.
It further, further include dry powder circulating line, it is logical that the dust outlet of the first bag filter mixes flue with level-one Cross the connection of dry powder circulating line.
Further, first circulation pipe, and first are connected between the air outlet and air inlet of the first bag filter First circulation blower and first is successively arranged on circulation pipe from the air outlet to the direction of air inlet of the first bag filter to add Hot device.
Further, second circulation pipe, and second are connected between the air outlet and air inlet of the second bag filter Second circulation blower and second is successively arranged on circulation pipe from the air outlet to the direction of air inlet of the second bag filter to add Hot device.
Compared with prior art, the invention has the following advantages:
The utility model structure is simple, design science, and the pollution flue gas of garbage incinerating power plant can be made to meet ultra-clean row Put requirement.Flue gas is handled using the utility model, entire treatment process does not need consumption water, and denitrification efficiency Height fully meets the index request of ultra-clean discharge;Simultaneously as whole process does not consume water, contain in the flue gas finally discharged Water is lower, and exhaust gas temperature is higher, and chimney breast will not generate the phenomenon that emitting white cigarette.Add when SCR denitration without steam Heat, and SCR exit gas temperature is higher (180 DEG C), can recycle to flue gas heat.
The utility model is sprayed using two-stage dry method, and heat boiler outlet flue gas and the calcium hydroxide dry powder for spurting into pipeline are mixed Enter mixer after conjunction, after carrying out depickling reaction in a mixer, enters back into the first bag filter, remove the niter in flue gas Grey dry powder.The flue gas come out by the first bag filter again with spurt into that second level mixes the sodium bicarbonate of flue and active carbon mixes It closes, to dioxin, the acidic materials (SO in flue gas in depickling reactor2, HCl, HF) removed.Go out from depickling reactor The flue gas come enters the second bag filter, removes to the dust in flue gas.After the second bag filter removes dust Flue gas enter SCR reactor, then the NOx in flue gas is removed, last clean flue gas is discharged by air-introduced machine and chimney Atmosphere.
The calcium hydroxide dust collected in the first bag filter of the utility model returns to level-one mixing through dry powder circulating line Flue, to recycle.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the utility model.
Wherein, the corresponding title of appended drawing reference are as follows:
1- calcium hydroxide injection apparatus, 2- level-one mix flue, 3- mixer, the first bag filter of 4-, 5- sodium bicarbonate Injection apparatus, 6- active carbon injection apparatus, 7- second level mix flue, 8- depickling reactor, the second bag filter of 9-, 10-SCR Reactor, 11- air-introduced machine, 12- chimney, 13- primary heater, 14- first circulation blower, 15- secondary heater, 16- second Circulating fan, 17- first circulation pipe, 18- second circulation pipe, 19- dry powder circulating line.
Specific embodiment
The utility model is described in further detail with embodiment for explanation with reference to the accompanying drawing, and the mode of the utility model includes But it is not limited only to following embodiment.
As shown in Fig. 1, the utility model provides a kind of burning power plant flue gas efficient purifying system, structure letter Single, design science can make the pollution flue gas of garbage incinerating power plant meet ultra-clean emission request.The utility model includes niter Grey injection apparatus (1), level-one mix flue (2), mixer (3), the first bag filter (4), sodium bicarbonate injection apparatus (5), active carbon injection apparatus (6), second level mixing flue (7), depickling reactor (8), the second bag filter (9), SCR reaction Device (10), air-introduced machine (11) and chimney (12);
The outlet side of level-one mixing flue (2) is connect with the entrance of the mixer (3), and the level-one mixes flue (2) flue of inlet end and waste heat boiler connects, for be filled with flue gas in the mixer (3), the calcium hydroxide to spray Device (1) connect by pipeline and the level-one mixing flue (2), for for the level-one mix flue (2) it is interior spurt into and The calcium hydroxide dry powder that flue gas in level-one mixing flue (2) is mixed;
The outlet of the mixer (3) is connect with the air inlet of first bag filter (4), and first cloth bag removes The air outlet of dirt device (4) is connect with the entrance of the depickling reactor (8) by second level mixing flue (7), the second level It mixes and is also connected respectively by pipeline and the sodium bicarbonate injection apparatus (5) and the active carbon injection apparatus (6) on flue (7) It connects;
The outlet of the depickling reactor (8) is connect with the air inlet pipeline of second bag filter (9), and described The air outlet of two bag filters (9), the SCR reactor (10), the air-introduced machine (11) and the chimney (12) are successively managed Road connection.
In order to realize recycling for material, reduction operating cost, the utility model further includes dry powder circulating line (19), The dust outlet of first bag filter (4) mixes flue (2) with the level-one and passes through the dry powder circulating line (19) Connection.
In order to guarantee the efficient operation of the utility model, the air outlet and air inlet of first bag filter (4) it Between be connected with first circulation pipe (17), and from the outlet air of first bag filter (4) on the first circulation pipe (17) First circulation blower (14) and primary heater (13) are successively arranged on mouth to the direction of air inlet.
It is connected with second circulation pipe (18) between the air outlet and air inlet of second bag filter (9), and institute It states and is successively arranged second from the air outlet to the direction of air inlet of second bag filter (9) on second circulation pipe (18) Circulating fan (16) and secondary heater (15).
When the utility model is used, entered in level-one mixing flue 2 by the flue gas that waste heat boiler is discharged, sprayed with by calcium hydroxide Enter mixer 3 after the calcium hydroxide dry powder blend that injection device 1 sprays into, after carrying out depickling reaction in mixer 3, enters back into first In bag filter 4.Flue gas after the first bag filter 4 removes calcium hydroxide dry powder enters in second level mixing flue 7, with carbon After the active carbon mixing of sodium bicarbonate, the penetrating of active carbon injection apparatus 6 that sour hydrogen sodium injection apparatus 5 sprays into, reacted into depickling Device 8.Depickling reaction is carried out in depickling reactor 8, to dioxin, the acidic materials (SO in flue gas2, HCl, HF) taken off It removes.The flue gas come out from depickling reactor 8 enters in the second bag filter 9, removes to the dust in flue gas.Through second Flue gas after the removing dust of bag filter 9 enters SCR reactor 10, then removes to the NOx in flue gas, last cleaning cigarette Gas is discharged into atmosphere by air-introduced machine 11 and chimney 12.
In order to realize recycling for material, operating cost, the calcium hydroxide dry powder that the first bag filter 4 is collected are reduced Level-one, which is sprayed into, by dry powder circulating line 19 mixes flue.
Above-described embodiment is only one of preferred embodiments of the present invention, should not be taken to limit the utility model Protection scope, as long as the utility model body design thought and mentally make have no the change of essential meaning or profit Color, it is solved the technical issues of it is still consistent with the utility model, the protection scope of the utility model should all be included in Within.

Claims (4)

1. a kind of burning power plant flue gas efficient purifying system, which is characterized in that including calcium hydroxide injection apparatus (1), level-one Mix flue (2), mixer (3), the first bag filter (4), sodium bicarbonate injection apparatus (5), active carbon injection apparatus (6), second level mixes flue (7), depickling reactor (8), the second bag filter (9), SCR reactor (10), air-introduced machine (11) With chimney (12);
The outlet side of level-one mixing flue (2) is connect with the entrance of the mixer (3), and the level-one mixes flue (2) Inlet end and the flue of waste heat boiler connect, for be passed through flue gas, the calcium hydroxide injection apparatus in the mixer (3) (1) connect by pipeline and the level-one mixing flue (2), for for level-one mixing flue (2) it is interior spurt into it is described The calcium hydroxide dry powder that flue gas in level-one mixing flue (2) is mixed;
The outlet of the mixer (3) is connect with the air inlet of first bag filter (4), first bag filter (4) air outlet is connect with the entrance of the depickling reactor (8) by second level mixing flue (7), the second level mixing It is also connect respectively by pipeline with the sodium bicarbonate injection apparatus (5) and the active carbon injection apparatus (6) on flue (7);
The outlet of the depickling reactor (8) is connect with the air inlet pipeline of second bag filter (9), second cloth Successively flue connects for the air outlet of bag dust collector (9), the SCR reactor (10), the air-introduced machine (11) and the chimney (12) It connects.
2. a kind of burning power plant flue gas efficient purifying system according to claim 1, which is characterized in that further include doing Powder circulating line (19), the dust outlet of first bag filter (4) mix flue (2) with the level-one and are done by described Powder circulating line (19) connection.
3. a kind of burning power plant flue gas efficient purifying system according to claim 1, which is characterized in that described first It is connected between the air outlet and air inlet of bag filter (4) first circulation pipe (17), and the first circulation pipe (17) On first circulation blower (14) and are successively arranged from the air outlet to the direction of air inlet of first bag filter (4) One heater (13).
4. a kind of burning power plant flue gas efficient purifying system according to claim 1, which is characterized in that described second It is connected between the air outlet and air inlet of bag filter (9) second circulation pipe (18), and the second circulation pipe (18) On second circulation blower (16) and are successively arranged from the air outlet to the direction of air inlet of second bag filter (9) Two heaters (15).
CN201821311277.6U 2018-08-15 2018-08-15 A kind of burning power plant flue gas efficient purifying system Active CN208959499U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110201464A (en) * 2019-07-05 2019-09-06 上海环境工程设计研究院有限公司 High dust-laden, High water cut, the purification process of high sulfur-containing smoke gas and flue gas purification system
WO2021016825A1 (en) * 2019-07-29 2021-02-04 深圳市能源环保有限公司 Waste incinerator flue gas dry deacidification treatment system
CN112516781A (en) * 2020-12-16 2021-03-19 西安热工研究院有限公司 Three-section type dry-wet combined jet removal method suitable for CFB boiler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110201464A (en) * 2019-07-05 2019-09-06 上海环境工程设计研究院有限公司 High dust-laden, High water cut, the purification process of high sulfur-containing smoke gas and flue gas purification system
WO2021016825A1 (en) * 2019-07-29 2021-02-04 深圳市能源环保有限公司 Waste incinerator flue gas dry deacidification treatment system
CN112516781A (en) * 2020-12-16 2021-03-19 西安热工研究院有限公司 Three-section type dry-wet combined jet removal method suitable for CFB boiler

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