CN207680334U - A kind of ultra-clean environment protection treating island of coal-fired boiler tail gas - Google Patents

A kind of ultra-clean environment protection treating island of coal-fired boiler tail gas Download PDF

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Publication number
CN207680334U
CN207680334U CN201721495689.5U CN201721495689U CN207680334U CN 207680334 U CN207680334 U CN 207680334U CN 201721495689 U CN201721495689 U CN 201721495689U CN 207680334 U CN207680334 U CN 207680334U
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ultra
coal
mggh
island
environment protection
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刘福林
吴培亭
郑奎照
吴坡
翟振兴
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Suqian Long Jing Environmental Protection Technology Co Ltd
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Suqian Long Jing Environmental Protection Technology 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
    • Y02A50/2351Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust

Abstract

The utility model discloses a kind of ultra-clean environment protection treating islands of coal-fired boiler tail gas, connection setting denitrification apparatus before boiler preheater, after be sequentially connected setting exhaust-heat absorption device, dry collector, desulfurizer, ultrasonic coagulation device, wet electrical dust precipitator, cooling MGGH and heating MGGH, in the case of giving full play to respective function, the again mutually integrated and coupling of various devices forms an efficient trapping subparticle PM2.5, aerosol and dehumidifying desalination and takes off white smoke gas treatment system.The structure design of the utility model is reasonable, using effect protrudes, the especially specific setting of ultrasonic coagulation device and cooling MGGH and the MGGH that heats up, the ultrasonic coalescence reunion desalination of growing up and dehumidify for realizing the subparticle PM2.5 in flue gas respectively is de- in vain, in the case where reducing environmentally friendly cost, the ultra-clean discharge of flue gas is realized.

Description

A kind of ultra-clean environment protection treating island of coal-fired boiler tail gas
Technical field
The utility model belongs to environmental protection equipment systems technology field, and in particular to a kind of ultra-clean environmental protection of coal-fired boiler tail gas is controlled Manage island system.
Background technology
Mist is in the case where aqueous vapor is sufficient, gentle breeze and atmosphere are stablized, if subaerial air cooling is to certain degree When, the aqueous vapor in air will condense into fine water drop suspension in aerial, make the On The Deterioration of Visibility Over of ground level, this weather Phenomenon is known as mist.Haze is also referred to as gray haze, refers to the turbid phenomenon formed by particle suspensions such as a large amount of cigarettes, dirt, the core substance of haze It is the particles such as the dust granule to suspend in air, including dust, sulfuric acid, nitric acid, organic hydrocarbon compounds, air can be made muddy, The visual field obscures and leads to visibility deterioration.Cause the various diseases such as skin disease, asthma, cancer, harm is brought to health.Mist Haze, in general, the difference of mist and haze essentially consist in the size of moisture:Moisture reaches 90% or more the mist that cries, moisture Content is haze less than 80%.It is the mixture of mist and haze, but main component is haze between 80%-90%.In addition, haze and mist are also There is " different " that some are visible with the naked eye:The thickness of mist only has tens meters to 200 meters, and haze then has 1 km to 3 kms;Mist Color is milky, Bluish white, and haze is then yellow, orange grey.
The electric energy in China 90% comes from thermal power generation, and thermal power generation and other Industrial Boilers need to use coal-burning boiler, these Boiler needs a large amount of coal that burns, the flue gas that coal-fired boiler combustion generates, it has also become one of main source of haze.Coal-fired pot It is to realize that flue gas can reach that smoke gas treatment, which has a large amount of process equipment such as out of stock, dedusting and desulfurization, the effect of these equipment, after stove To environment protection emission requirement, these a large amount of environment-protective process processing equipments form the fire coal boiler fume environment protection treating system of complete set System, under current particularly severe environmental requirement, this smoke gas treatment system is also referred to as ultra-clean environment protection treating island.
The utility model of Patent No. 106940025A discloses fire coal boiler fume purification and waste heat recovery processing system And method, operation principle are mainly cold by denitration reaction device, dust-extraction unit, residual heat absorber, desulfuration absorbing tower, ultrapurification But device, residual evaporator realize denitration, dedusting, desulfurization and UTILIZATION OF VESIDUAL HEAT IN, residual heat absorber are placed on behind dust-extraction unit, nothing Method can not improve the performance of dry collector, dry dust removal by the specific resistance and temperature reduced into dry collector that cool down The dust emission of device is easily more than the dust requirement of subordinate's desulfuration absorbing tower so that the slurries of desulfuration absorbing tower receive dust pollution And be poisoned, desulfurization work can not be normally carried out, simultaneously because desulfuration absorbing tower without any dust suppression, on the one hand makes rear class Chimney is unable to qualified discharge, on the other hand so that ultrapurification cooler and residual evaporator after desulfuration absorbing tower are easy to be desulfurized The attachments such as the desulfurization slurry aerosol in flue gas and fine dust bond afterwards, reduce it and cool and heat effect.
The utility model of Patent No. 106334428A discloses a kind of smoke processing system, and operation principle is mainly to pass through The realizations such as denitration reaction device, the first electrostatic precipitator, desulfurizer, the second electrostatic precipitator and reducing agent injection apparatus Denitration, dedusting and desulfurization, since the second electrostatic precipitator being arranged after desulfurizing tower is wet electrical dust precipitator, single wet type electricity Deduster can not efficiently trap fine dust PM2.5, and water-borne flue gas-flue gas is in addition also not provided with behind this wet electrical dust precipitator Heat exchange MGGH systems, the aerosol in cannot efficiently removing smoke cannot achieve ultra-clean environment protection emission.
Accordingly, it is desirable to provide a kind of ultra-clean environment protection treating island of coal-fired boiler tail gas, realizes and is trapped to the efficient of flue gas, Focus on the processing to flue gas fine particle PM2.5 and aerosol, reaches dehumidifying desalination and take off white, ultra-clean processing, realization is ultra-clean Environment protection emission.
Utility model content
The utility model provides a kind of ultra-clean environment protection treating island of coal-fired boiler tail gas regarding to the issue above, it is therefore intended that realizes One efficient trapping subparticle PM2.5, aerosol and dehumidifying desalination take off white smoke gas treatment system.
The technical solution of the utility model:
A kind of ultra-clean environment protection treating island of coal-fired boiler tail gas, it is characterised in that:Connection setting denitration fills before boiler preheater Set, after be sequentially connected setting exhaust-heat absorption device, dry collector, desulfurizer, ultrasonic coagulation device, wet-esp Device, cooling MGGH and heating MGGH, in the case of giving full play to respective function, the again mutually integrated and coupling of various devices is formed One efficient trapping subparticle PM2.5, aerosol and dehumidifying desalination take off white smoke gas treatment system.
The denitrification apparatus is non-selection catalytic denitration SNCR or selective catalysis denitration SCR, and denitrification apparatus realizes nitrogen oxidation Object DS NOx Est amount is less than or equal to 50mg/Nm3
The exhaust-heat absorption device is low-level (stack-gas) economizer.
The dry collector includes electric-bag complex dust collector, bag filter and electric precipitator, and dry collector is realized The total discharge capacity of dust is less than or equal to 50mg/Nm3
The desulfurizer is desulfurizing tower, removes the sulfur dioxide in flue gas, realizes that SO2 emissions are less than or equal to 35mg/Nm3
The ultrasonic coagulation device includes supersonic generator and the ultrasonic transducer that is attached thereto, ultrasonic coagulation Device carries out ultrasonic coalescence and reunion to the subparticle PM2.5 in flue gas, realizes particle growth.
The wet electrical dust precipitator is to progress such as the fine dust PM2.5 of prime ultrasonic wave reunion Caragana seed pests and aerosols Efficiently trapping, it is respectively to be less than or equal to 50mg/Nm to make its nitrogen oxides NOX, sulfur dioxide SO2 and dust discharge amount3, be less than etc. In 35mg/Nm3, be less than or equal to 5mg/Nm3Ultra-clean discharge.
The cooling MGGH and heating MGGH form heat-exchange device, are snakelike tube bank.
The cooling MGGH makes smoke temperature generate LOW TEMPERATURES at water or brine etc., by the way that the discharge outlet row in its bottom is arranged Go out.
The heating MGGH is discharged into chimney discharge after so that smoke temperature raising realization is taken off in vain.
The beneficial effects of the utility model:
The structure design of the utility model is reasonable, and using effect protrudes, and connects before boiler preheater for smoke pollution processing Connect setting denitrification apparatus, after be sequentially connected setting exhaust-heat absorption device, dry collector, desulfurizer, ultrasonic coagulation device, Wet electrical dust precipitator, cooling MGGH and heating MGGH, various devices are integrated and intercouple that form an efficient trapping micro- Fine grained PM2.5, aerosol and dehumidifying desalination take off white smoke gas treatment system, especially ultrasonic coagulation device and cooling MGGH With the specific setting of heating MGGH, the ultrasonic coalescence reunion for realizing the subparticle PM2.5 in flue gas respectively grows up and dehumidifies Desalination is de- white, in the case where reducing environmentally friendly cost, realizes the ultra-clean discharge of flue gas.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is ultrasonic coagulation apparatus structure schematic diagram.
Fig. 3 is cooling MGGH and heating MGGH structural schematic diagrams.
Wherein:1 denitrification apparatus, 2 exhaust-heat absorption devices, 3 dry collectors, 4 desulfurizers, 5 ultrasonic coagulations dress It sets, 6 wet electrical dust precipitators, 7 cooling MGGH, 8 heating MGGH, 9 chimneys, 10 ultrasonic coagulation devices, 11 ultrasonic waves occur Device.
Specific implementation mode
The ultra-clean environment protection treating island of a kind of coal-burning boiler provided by the utility model, before boiler preheater connection setting denitration fill Set 1, after be sequentially connected setting exhaust-heat absorption device 2, dry collector 3, desulfurizer 4, ultrasonic coagulation device 5, wet type electricity Deduster 6, cooling MGGH7 and heating MGGH8, various devices integrated and intercouple that form an efficient trapping fine Particle PM2.5 and dehumidifying desalination take off white smoke gas treatment system, and denitrification apparatus 1 is non-selection catalytic denitration SNCR or selective catalysis Denitration SCR, denitrification apparatus realize that nitrogen oxides DS NOx Est amount is less than or equal to 50mg/Nm3, then flue gas is by exhaust-heat absorption dress It sets 2 and enters back into dry collector 3, exhaust-heat absorption device 2 is low-level (stack-gas) economizer, reduces the flue gas temperature into dry collector 3 Degree, dry collector 3 include electric-bag complex dust collector, bag filter and electric precipitator, can collect the exhausted big portion in flue gas Divide dust, including subparticle PM2.5, dry collector realizes that the total discharge capacity of dust is less than or equal to 50mg/Nm3, with Meet the requirement of next technique desulphurization system, then flue gas removes the sulfur dioxide in flue gas, desulfurizer by desulfurizer 4 4 be desulfurizing tower, realizes that SO2 emissions are less than or equal to 35mg/Nm3, flue gas enters back into ultrasonic coagulation device 5, ultrasonic wave Coacervation device 5 includes ultrasonic coagulation device 10 and the supersonic generator 11 being attached thereto, using ultrasonic wave to fine particle Modulating action, so that fine particle is carried secretly by medium in high intensity sound field and is generated vibration, the particulate matter of different-grain diameter because Amplitude and speed are different, generate relative motion between each other and cause to collide, especially subparticle PM2.5 in wet flue gas into Row ultrasound coalescence and reunion, realize particle growth, are eliminated convenient for follow-up, and hereafter flue gas enters back into wet electrical dust precipitator 6, wet type electricity Deduster 6 removes dust and aerosol etc. in flue gas by electric field action, realizes nitrogen oxides NOX, sulfur dioxide SO2 and powder Dirt discharge capacity is respectively to be less than or equal to 50mg/Nm3, be less than or equal to 30mg/Nm3, be less than or equal to 5mg/Nm3Ultra-clean discharge.It is remaining Flue gas be again introduced into heat-exchange device, heat-exchange device is snakelike tube bank, including cooling MGGH and heating MGGH, dropped before this Warm MGGH7 makes smoke temperature generate LOW TEMPERATURES into water or brine etc., and by the way that the discharge outlet discharge in its bottom is arranged, realization desalination removes It is wet, then be heating MGGH8 make smoke temperature generate high temperature realize it is de- white after be discharged into the discharge of chimney 9, while whole system ultra-clean discharge, Fine dust can be substantially reduced, desalination dehumidifying is improved and takes off in vain, reduce air " haze ", realize ultra-clean environment protection emission.
The utility model arranges exhaust-heat absorption device 2 before dry collector 3, is lowered into the flue gas temperature of dry collector Degree, on the one hand can reduce the specific resistance of flue gas, on the other hand can reduce the volume of flue gas, improve the receipts of dry electric precipitation device Dirt performance reduces volume, construction cost and the operation and maintenance cost of dry electric precipitation device, using electric bag or cloth bag dry dust removal Device, smoke temperature reduction can also extend life of bag filter, reduce the resistance and energy consumption of Blower for sucking or supplying.
The utility model arranges ultrasonic coagulation device 5 and wet electrical dust precipitator 6 after desulfurizer 4, is removed in wet type electricity Heat-exchange system cooling MGGH7 and heating MGGH8 are set after dirt device 6, intercouples, fine dust can be coagulated using ultrasonic wave And reunite and grow up, facilitate the trapping of wet electrical dust precipitator 6, cooling MGGH7 so that smoke temperature is generated LOW TEMPERATURES into water or brine etc., lead to It crosses the discharge outlet being arranged in its bottom to be discharged, realization desalination dehumidifies, and heating MGGH8 is discharged into after making smoke temperature generation high temperature realization take off in vain Chimney 9 is discharged, and can substantially reduce fine dust, improves desalination dehumidifying and takes off in vain, reaches the ultra-clean discharges of PM2.5, reduce air " mist Haze ".
The heat-exchange device of the utility model, after flue gas initially enters cooling flue, flue gas passes through internal snakelike tube bank Fan heat, flue-gas temperature are down to 20-30 DEG C from 60 DEG C.Flue gas enters back into heating horizontal flue, and flue-gas temperature is increased from 20-30 DEG C 20-30 DEG C, warm water cools down through subcooler, comes back to the cooling snakelike tube bank of horizontal flue, one is formed between two flues Closed circulation system is used as heat transfer agent by water, and leading portion makes flue gas cool-down, is warmly transmitted to rear end by water-medium, makes cigarette Gas lift temperature, it is de- white by this process progress flue gas desalination, technique water consumption is saved, the discharge of chimney steam, reduction pair are reduced " plume " visual pollution is eliminated in the corrosion of chimney.
The patent on a kind of coal-burning boiler ultra-clean environment protection treating island and Patent No. 106940025A provided by the utility model " fire coal boiler fume purifies and waste heat recovery processing system and method " there are differences, as follows:
The utility model arranges exhaust-heat absorption device 2 before dry collector 3, is arranged after 4 desulfurizing tower of desulfurizer super Sonic agglomeration device 5 and wet electrical dust precipitator 6 are not provided with spray system after heat exchanger cooling MGGH7 and heating MGGH8, The utility model reduces the flue-gas temperature into dry collector 3 by exhaust-heat absorption device 2 for low-level (stack-gas) economizer, on the one hand The specific resistance of flue gas can be reduced, the volume of flue gas on the other hand can be reduced, its gathering dust property can be improved to dry collector 3 The volume of electric precipitator, construction cost and operation and maintenance cost can and be reduced, if using electric bag or cloth bag dry collector, cigarette Temperature degree reduces the service life that can also extend filter bag, reduces the resistance and energy consumption for introducing wind turbine;After 4 desulfurizing tower of desulfurizer Ultrasonic coagulation device 5 and wet electrical dust precipitator 6 intercouple, ultrasonic coagulation device 5 can micro- using ultrasonic wave The reunion of fine dust coalescence is grown up, because single setting wet electrical dust precipitator 6 is limited to fine particle PM2.5 trappings effect, very much Fine particle can not trap, so the trapping of wet electrical dust precipitator 6 for convenience, ultrasonic coagulation device 5 and wet type electricity are removed The setting that intercouples of dirt device 6, however heat exchanger cooling MGGH7 and heating MGGH8 processing are carried out to the flue gas by rear class, So that the water mist in flue gas, various salt steam and aerosol is cooled to aqueous solution, desulfurization water process flowed to by the bottom of heat exchange, Realize desalination dehumidifying.
The patent on a kind of coal-burning boiler ultra-clean environment protection treating island and Patent No. 106334428A provided by the utility model " a kind of smoke processing system " there are differences, as follows:
A kind of patent " smoke processing system " of Patent No. 106334428A is due to the second electrostatic for being arranged after desulfurizing tower Dust-extraction unit is wet electrical dust precipitator, and single wet electrical dust precipitator can not efficiently trap fine dust PM2.5, and this practicality is new Type arranges ultrasonic coagulation device 5 and wet electrical dust precipitator 6 after 4 desulfurizing tower of desulfurizer, super after 4 desulfurizing tower of desulfurizer Sonic agglomeration device 5 and wet electrical dust precipitator 6 intercouple, and ultrasonic coagulation device 5 can be fine powder using ultrasonic wave The reunion of dirt coalescence is grown up, many subtle because single setting wet electrical dust precipitator 6 is limited to fine particle PM2.5 trappings effect Particle can not trap, so effective abundant trapping to fine particle PM2.5 of wet electrical dust precipitator 6 for convenience, it will be ultrasonic The setting that intercouples of wave coacervation device 5 and wet electrical dust precipitator 6;In addition patent " a kind of cigarette of Patent No. 106334428A Gas processing system " is not provided with water-borne flue gas-flue gas heat exchange MGGH systems behind wet electrical dust precipitator, and energy waste is tight Weight, and the utility model carries out heat exchanger cooling MGGH7 and heating MGGH8 processing to the flue gas by rear class, makes in flue gas Water mist, various salt steam and aerosol be cooled to aqueous solution, flows to desulfurization water process by the bottom of heat exchange, realizes desalination Dehumidifying, extremely saves the energy.
The utility model has the following advantages:
(1)In conjunction with more denitration, dry dust removal, desulfurization, ultrasonic wave, wet-esp, cooling MGGH and heating MGGH dresses It sets to form multiple functional and close association an integrated and coupled system, realizes microparticle PM2.5, the salt for influencing atmospheric haze The efficient trapping of class gas, steam and aerosol;
(2)Pass through ultrasonic wave coalescence device so that into wet electrical dust precipitator PM2.5 particles coalescence and agglomerate into larger Particle improves wet electrical dust precipitator arresting efficiency, reduces the discharge of subparticle;
(3)The MGGH heat-exchange devices of cooling are set after wet electrical dust precipitator so that the steam in flue gas is cooled to liquid State water reduces the moisture into air, reduces white cigarette " plume ";
(4)The MGGH heat-exchange devices of cooling are set after wet electrical dust precipitator, the salt constituents in flue gas is made to be cooled to Liquid brine reduces the salt gas into rear class air, reduces it and react with air and sunlight, reduces " plume ";
(5)Corrosion composition after the MGGH that cools down in flue gas substantially reduces, and reduces the corrosion of rear class chimney;
(6)Setting heating MGGH heat-exchange devices, heat flue gas, increase the temperature of gas after the MGGH that cools down, Equally also reduce the corrosion to chimney due to low temperature these flue gases;
(7)The salinity and moisture in flue gas are reduced, the density of flue gas is reduced, improves the draft of chimney, improves flue gas in cigarette Flow velocity in chimney reduces chimney height and saves chimney cost, while reducing the resistance of wind turbine, saves energy consumption.
The structure design of the utility model is reasonable, and using effect protrudes, and connects before boiler preheater for smoke pollution processing Connect setting denitrification apparatus, after be sequentially connected setting exhaust-heat absorption device, dry collector, desulfurizer, ultrasonic coagulation device, Wet electrical dust precipitator, cooling MGGH and heating MGGH, form an efficient trapping subparticle PM2.5 and dehumidifying desalination is de- The specific setting of white smoke gas treatment system, especially ultrasonic coagulation device and cooling MGGH and the MGGH that heats up, are realized respectively The ultrasonic coalescence reunion of subparticle PM2.5 in flue gas desalination of growing up and dehumidify is de- white, the case where reducing environmental protection cost Under, ultra-clean processing is energy saving, prolongs the service life.
To sum up, the utility model reaches expected purpose.

Claims (10)

1. a kind of ultra-clean environment protection treating island of coal-fired boiler tail gas, it is characterised in that:Connection setting denitrification apparatus before boiler preheater, After be sequentially connected setting exhaust-heat absorption device, dry collector, desulfurizer, ultrasonic coagulation device, wet electrical dust precipitator, drop Warm MGGH and heating MGGH forms an efficient trapping subparticle PM2.5, aerosol and dehumidifying desalination and takes off white flue gas Administer the integrated and system that intercouples.
2. a kind of ultra-clean environment protection treating island of coal-fired boiler tail gas as described in claim 1, it is characterised in that:The denitrification apparatus is Non-selection catalytic denitration SNCR or selective catalysis denitration SCR, denitrification apparatus realize that nitrogen oxides DS NOx Est amount is less than or equal to 50mg/Nm3
3. a kind of ultra-clean environment protection treating island of coal-fired boiler tail gas as described in claim 1, it is characterised in that:The exhaust-heat absorption dress It is set to low-level (stack-gas) economizer.
4. a kind of ultra-clean environment protection treating island of coal-fired boiler tail gas as described in claim 1, it is characterised in that:The dry collector Including electric-bag complex dust collector, bag filter and electric precipitator, dry collector realizes that the total discharge capacity of dust is less than or equal to 50mg/Nm3
5. a kind of ultra-clean environment protection treating island of coal-fired boiler tail gas as described in claim 1, it is characterised in that:The desulfurizer is Desulfurizing tower removes the sulfur dioxide in flue gas, realizes that SO2 emissions are less than or equal to 35mg/Nm3
6. a kind of ultra-clean environment protection treating island of coal-fired boiler tail gas as described in claim 1, it is characterised in that:The ultrasonic coagulation Device includes supersonic generator and the ultrasonic transducer that is attached thereto, and ultrasonic coagulation device is to the subparticle in flue gas PM2.5 carries out ultrasonic coalescence and reunion, realizes particle growth.
7. a kind of ultra-clean environment protection treating island of coal-fired boiler tail gas as described in claim 1, it is characterised in that:The wet-esp Device is respectively to be less than or equal to 50mg/Nm to nitrogen oxides NOX, sulfur dioxide SO2 and dust discharge amount3, be less than or equal to 35mg/ Nm3, be less than or equal to 5mg/Nm3Ultra-clean discharge.
8. a kind of ultra-clean environment protection treating island of coal-fired boiler tail gas as described in claim 1, it is characterised in that:The cooling MGGH and The MGGH that heats up forms heat-exchange device, is snakelike tube bank, is arranged to closed circulation system using twin flue counterflow configuration.
9. a kind of ultra-clean environment protection treating island of coal-fired boiler tail gas as described in claim 1 or 8, it is characterised in that:The cooling MGGH makes smoke temperature generate LOW TEMPERATURES, by the way that the discharge outlet discharge in its bottom is arranged.
10. a kind of ultra-clean environment protection treating island of coal-fired boiler tail gas as described in claim 1 or 8, it is characterised in that:The heating MGGH is discharged into chimney discharge after so that smoke temperature generation high temperature realization is taken off in vain.
CN201721495689.5U 2017-11-10 2017-11-10 A kind of ultra-clean environment protection treating island of coal-fired boiler tail gas Active CN207680334U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107617319A (en) * 2017-11-10 2018-01-23 宿迁龙净环保科技有限公司 A kind of ultra-clean environment protection treating island of coal-fired boiler tail gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107617319A (en) * 2017-11-10 2018-01-23 宿迁龙净环保科技有限公司 A kind of ultra-clean environment protection treating island of coal-fired boiler tail gas

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