CN103611399B - A kind of danger waste burning flue gas purification system - Google Patents
A kind of danger waste burning flue gas purification system Download PDFInfo
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- CN103611399B CN103611399B CN201310639722.7A CN201310639722A CN103611399B CN 103611399 B CN103611399 B CN 103611399B CN 201310639722 A CN201310639722 A CN 201310639722A CN 103611399 B CN103611399 B CN 103611399B
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Abstract
The invention provides a kind of danger waste burning flue gas purification system, it combines dry method, wet method, bag-type dust three kinds of depickling filtration systems, compensate for separately shortcoming in use, improve the disposal ability of the sour gas in the flue gas that danger waste burning is produced.It comprises quenching apparatus, described quenching apparatus has smoke inlet, exhanst gas outlet, the exhanst gas outlet of described quenching apparatus is by pipeline connection smoke eliminator, the outlet chimney of described smoke eliminator, it is characterized in that: described smoke eliminator specifically comprises dry type reactor, sack cleaner, wet scrubber tower, the exhanst gas outlet of described quenching apparatus connects the gas approach of described dry type reactor, the exhanst gas outlet of described dry type reactor connects the gas approach of described sack cleaner, the exhanst gas outlet of described sack cleaner connects the gas approach of described wet scrubber tower, the exhanst gas outlet of described wet scrubber tower is communicated with described chimney.
Description
Technical field
The present invention relates to the technical field of gas cleaning, be specially a kind of danger waste burning flue gas purification system.
Background technology
At present, according to the discharge standard of flue gas, need to carry out purified treatment to pollutants such as the sour gas (mainly HCL, HF, SO2), dust granules, bioxin and the heavy metals that burn in the useless flue gas produced of danger.First danger waste burning flue gas process of the prior art carries out removing sour gas, then carries out the filtration of dust granules.Wherein the removal methods of sour gas adopts dry method or semidry method or wet processing.
Dry-process deacidification is in flue gas, spray into dryness medicament, medicament reacts with flue gas in the reactor, and to remove sour gas wherein, its shortcoming is that the medicament use amount of this kind of method is large, cause its use cost to improve, its deacidification efficiency is more relatively low than semidry method, wet method.
Semidry method depickling sprays in reactor by nozzle or rotary sprayer by lime white, forms the drop that particle diameter is less, sour gas and lime white are reacted and generates salt, and its shortcoming is that the preparation of lime white is complicated, deacidification limited efficacy.
Wet method depickling then adopts scrubbing tower form, and can produce containing the inorganic villaumite of high concentration with the waste water of heavy metal, also need to be equipped with Waste Water Treatment, cost of investment is high, and operating cost is also high.
As can be seen here, all there is respective shortcoming in any one above-mentioned deacidifying process, single use someway security is low, and reliability is low.Once go wrong, environmental pollution may be produced.
Summary of the invention
For existing above-mentioned defect, the invention provides a kind of danger waste burning flue gas purification system, it combines dry method, wet method, bag-type dust three kinds of depickling filtration systems, compensate for separately shortcoming in use, improve the disposal ability of the sour gas in the flue gas that danger waste burning is produced.
A kind of danger waste burning flue gas purification system, its technical scheme is such: it comprises quenching apparatus, described quenching apparatus has smoke inlet, exhanst gas outlet, the exhanst gas outlet of described quenching apparatus is by pipeline connection smoke eliminator, the outlet chimney of described smoke eliminator, it is characterized in that: described smoke eliminator specifically comprises dry type reactor, sack cleaner, wet scrubber tower, the exhanst gas outlet of described quenching apparatus connects the gas approach of described dry type reactor, the exhanst gas outlet of described dry type reactor connects the gas approach of described sack cleaner, the exhanst gas outlet of described sack cleaner connects the gas approach of described wet scrubber tower, the exhanst gas outlet of described wet scrubber tower is communicated with described chimney.
It is further characterized in that: described quenching apparatus is specially quench tower, the top of described quench tower is provided with two-fluid spray gun, two imports of described two-fluid spray gun are communicated with cooling water tank, compressed air cylinder respectively, the upper lateral part of described quench tower is provided with smoke inlet, and the following side of described quench tower is provided with exhanst gas outlet;
The bottom of described dry type reactor is provided with gas approach, injection apparatus is furnished with above the gas approach of described dry type reactor, external pipe is communicated with described injection apparatus, the end of described external pipe is provided with spray medicine blower fan, the centre position of described external pipe has active carbon material feeding mouth, calcium hydroxide charging aperture, active carbon storage silo connects described active carbon material feeding mouth, calcium hydroxide storage silo connects described calcium hydroxide charging aperture, and the top of the injection apparatus of described dry type inside reactor is provided with exhanst gas outlet;
The exhanst gas outlet of described quench tower connects the gas approach of the bottom of described dry type reactor by flue;
Be provided with quantitative distributing device between described active carbon storage silo and described active carbon material feeding mouth, between described calcium hydroxide storage silo and described calcium hydroxide charging aperture, be provided with quantitative distributing device;
Be provided with air-introduced machine in pipeline between described sack cleaner, wet scrubber tower, the pipeline place of the smoke outlet of described sack cleaner is also provided with flue gas on-Line Monitor Device;
Described quantitative distributing device, on-Line Monitor Device be outer connected control system respectively;
The top of described wet scrubber tower is provided with exhanst gas outlet, and the top of described wet scrubber tower is furnished with alkali formula spray equipment, and described alkali formula spray equipment is connected with outside alkali liquid tank by pipeline, and the exit of described alkali liquid tank is furnished with pump.
Cleaning system of the present invention combines dry method, wet method, bag-type dust three kinds of depickling filtration systems, compensate for separately shortcoming in use, improves the disposal ability of the sour gas in the flue gas produced danger waste burning, makes HCL, SO
2discharge value is better than GB18484-2001 standard (HCL<60mg/Nm
3, SO
2<200 mg/Nm
3), reduce the pollution of flue gas to environment of discharge.
Accompanying drawing explanation
Fig. 1 is structural schematic block diagram sketch of the present invention.
Detailed description of the invention
See Fig. 1, it comprises quenching apparatus 1, quenching apparatus 1 has smoke inlet, exhanst gas outlet, the exhanst gas outlet of quenching apparatus 1 is by pipeline connection smoke eliminator, the outlet chimney 14 of smoke eliminator, smoke eliminator specifically comprises dry type reactor 5, sack cleaner 11, wet scrubber tower 13, the exhanst gas outlet of quenching apparatus 1 connects the gas approach that dry type reacts 5 devices, the exhanst gas outlet of dry type reactor 5 connects the gas approach of sack cleaner 11, the exhanst gas outlet of sack cleaner 11 connects the gas approach of wet scrubber tower 13, the exhanst gas outlet of wet scrubber tower 13 is communicated with chimney 14.Quenching apparatus 1 is specially quench tower, the top of quench tower is provided with two-fluid spray gun 2, two imports of two-fluid spray gun 2 are communicated with cooling water tank 3, compressed air cylinder 4 respectively, and the upper lateral part of quench tower is provided with smoke inlet, and the following side of quench tower is provided with exhanst gas outlet; The bottom of dry type reactor 5 is provided with gas approach, injection apparatus 9 is furnished with above the gas approach of dry type reactor 5, external pipe is communicated with injection apparatus 9, the end of external pipe is provided with spray medicine blower fan 8, the centre position of external pipe has active carbon material feeding mouth, calcium hydroxide charging aperture, active carbon storage silo 6 connects active carbon material feeding mouth, and calcium hydroxide storage silo 7 connects calcium hydroxide charging aperture, and the top of the injection apparatus 9 of dry type reactor 5 inside is provided with exhanst gas outlet; The exhanst gas outlet of quench tower connects the gas approach of the bottom of dry type reactor 5 by flue 15; Be provided with quantitative distributing device 10 between active carbon storage silo 6 and active carbon material feeding mouth, between calcium hydroxide storage silo 7 and calcium hydroxide charging aperture, be provided with quantitative distributing device 10; Be provided with air-introduced machine 12 in pipeline between sack cleaner 11, wet scrubber tower 13, the pipeline place of the smoke outlet of sack cleaner 11 is also provided with flue gas on-Line Monitor Device 19; Quantitative distributing device 10, on-Line Monitor Device 19 be outer connected control system 20 respectively; The top of wet scrubber tower 13 is provided with exhanst gas outlet, and the top of wet scrubber tower 13 is furnished with alkali formula spray equipment 17, and alkali formula spray equipment 17 is connected with outside alkali liquid tank 16 by pipeline, and the exit of alkali liquid tank 16 is furnished with pump 18.
The concrete method of operating setting forth lower the present embodiment below:
The flue gas that danger is given up in two combustion chambers after fully burning between distribute 850 DEG C ~ 1100 DEG C enters waste heat boiler from smoke inlet. enter dry type reactor 5, with lime Ca (OH) after the flue gas of 550 DEG C ~ 600 DEG C flowed out from waste heat boiler is down to 180 DEG C by chilling heat sink
2carry out acid-base neutralization reaction:
2HCL+Ca(OH)
2→CaCL
2+2H
2O
SO
2+Ca(OH)
2→CaSO
3+H
2O，2CaSO
3+O
2→2CaSO
4，
Flue gas after once desulfurization, cooling flows into flue 15 with the temperature of 160 DEG C ~ 180 DEG C, active carbon and calcium hydroxide send into injection apparatus 9 through dosing device 10 by spray medicine blower fan 8, and the active carbon of ejection adsorbs harmful substances such as the dioxin in flue gas and heavy metals; Ejection calcium hydroxide and flue gas in sour gas (HCL, SO
2deng) carry out neutralization reaction.
Flue gas enters exhaust dust device with bag 11 subsequently, dust in flue gas, depickling product, the active carbon being adsorbed with pest and unreacted calcium hydroxide and active carbon etc. are collected by filter bag, wherein, a part returns dry type reactor, and another part is delivered to flying dust warehouse and stored.
House outlet flue gas enters wet scrubber tower 13 through air-introduced machine 12, and the alkali lye in alkali liquid tank carries out spray washing, to sour gas (HCL, SO in flue gas by alkali formula spray equipment 17 pairs of flue gases
2deng) carry out neutralization reaction further, after flue gas reaches the discharge standard of regulation, enter air by chimney 14 high-altitude.
From the flying dust that quenching apparatus 1, exhaust dust device with bag 11 are discharged, by conveying device, deliver to flying dust warehouse and store.
In addition, HCL and SO of the discharge of flue gas on-Line Monitor Device 19 pairs of flue gases
2test, and feed back to control system 20 adjusts calcium hydroxide dosage with adjustment quantitative proportioner 10.The quantity injecting the calcium hydroxide of dry type reactor constantly regulates, and the fluctuation of acid point concentration in flue gas, can substantially by unreacted Ca (OH) on bag-type dust collector filter bag outer wall
2digested.
Claims (3)
1. a danger waste burning flue gas purification system, it comprises quenching apparatus, described quenching apparatus has smoke inlet, exhanst gas outlet, the exhanst gas outlet of described quenching apparatus is by pipeline connection smoke eliminator, the outlet chimney of described smoke eliminator, it is characterized in that: described smoke eliminator specifically comprises dry type reactor, sack cleaner, wet scrubber tower, the exhanst gas outlet of described quenching apparatus connects the gas approach of described dry type reactor, the exhanst gas outlet of described dry type reactor connects the gas approach of described sack cleaner, the exhanst gas outlet of described sack cleaner connects the gas approach of described wet scrubber tower, the exhanst gas outlet of described wet scrubber tower is communicated with described chimney, described quenching apparatus is specially quench tower, the top of described quench tower is provided with two-fluid spray gun, two imports of described two-fluid spray gun are communicated with cooling water tank, compressed air cylinder respectively, the upper lateral part of described quench tower is provided with smoke inlet, and the following side of described quench tower is provided with exhanst gas outlet, the bottom of described dry type reactor is provided with gas approach, injection apparatus is furnished with above the gas approach of described dry type reactor, external pipe is communicated with described injection apparatus, the end of described external pipe is provided with spray medicine blower fan, the centre position of described external pipe has active carbon material feeding mouth, calcium hydroxide charging aperture, active carbon storage silo connects described active carbon material feeding mouth, calcium hydroxide storage silo connects described calcium hydroxide charging aperture, and the top of the injection apparatus of described dry type inside reactor is provided with exhanst gas outlet, be provided with quantitative distributing device between described active carbon storage silo and described active carbon material feeding mouth, between described calcium hydroxide storage silo and described calcium hydroxide charging aperture, be provided with quantitative distributing device, be provided with air-introduced machine in pipeline between described sack cleaner, wet scrubber tower, the pipeline place of the smoke outlet of described sack cleaner is also provided with flue gas on-Line Monitor Device, described quantitative distributing device, on-Line Monitor Device be outer connected control system respectively, described dry type reactor is provided with the returning charge ash entrance with described sack cleaner UNICOM.
2. one danger waste burning flue gas purification system according to claim 1, is characterized in that: the exhanst gas outlet of described quench tower connects the gas approach of the bottom of described dry type reactor by flue.
3. one danger waste burning flue gas purification system according to claim 1, it is characterized in that: the top of described wet scrubber tower is provided with exhanst gas outlet, the top of described wet scrubber tower is furnished with alkali formula spray equipment, described alkali formula spray equipment is connected with outside alkali liquid tank by pipeline, and the exit of described alkali liquid tank is furnished with pump.
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| CN201310639722.7A CN103611399B (en) | 2013-12-04 | 2013-12-04 | A kind of danger waste burning flue gas purification system |
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| CN201310639722.7A CN103611399B (en) | 2013-12-04 | 2013-12-04 | A kind of danger waste burning flue gas purification system |
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| CN103611399B true CN103611399B (en) | 2015-11-04 |
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| CN104722181A (en) * | 2015-02-04 | 2015-06-24 | 绿色动力环保集团股份有限公司 | Combined deacidifying and dedusting method and system of domestic garbage incineration flue gas |
| CN104722182A (en) * | 2015-02-04 | 2015-06-24 | 绿色动力环保集团股份有限公司 | Harmless treatment method and harmless treatment system of added reaction auxiliary agent for flue gas obtained by combusting domestic garbage |
| CN105126519B (en) * | 2015-08-29 | 2017-12-01 | 华南理工大学 | A kind of wiring board disassembles the processing system of smog organic exhaust gas |
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| CN105727672B (en) * | 2016-03-08 | 2017-07-21 | 项敬来 | A kind of industrial refuse cracking incineration tail gas dust removal process method |
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| CN106861415B (en) * | 2017-04-20 | 2023-10-13 | 北京高能时代环境技术股份有限公司 | Flue gas purification system and method |
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| CN108300517A (en) * | 2018-03-30 | 2018-07-20 | 吴宽永 | It is a kind of to utilize pyrolysis of waste vaporized carbon elelctrochemical power generation device |
| CN108826311A (en) * | 2018-06-09 | 2018-11-16 | 新苏环保研究院（江苏）有限公司 | Dangerous waste incineration flue gas is reduced and disappear white system and method |
| CN111495134B (en) * | 2020-04-14 | 2022-05-27 | 安徽南都华铂新材料科技有限公司 | Waste gas treatment method in waste lithium ion battery recovery process |
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