CN106039941A - Method used for desulphurization and denitration closed cycle and sulfur resource recovery - Google Patents

Method used for desulphurization and denitration closed cycle and sulfur resource recovery Download PDF

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Publication number
CN106039941A
CN106039941A CN201610650541.8A CN201610650541A CN106039941A CN 106039941 A CN106039941 A CN 106039941A CN 201610650541 A CN201610650541 A CN 201610650541A CN 106039941 A CN106039941 A CN 106039941A
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denitration
desulphurization
dust
gas
flue
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王娜
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Tianjin Jia Sheng Trading Co Ltd Dye
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Tianjin Jia Sheng Trading Co Ltd Dye
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1425—Regeneration of liquid absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/18—Absorbing units; Liquid distributors therefor
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/02—Preparation of sulfur; Purification
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/62—Methods of preparing sulfites in general
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/64—Thiosulfates; Dithionites; Polythionates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/74—Preparation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/302—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention provides a method used for desulphurization closed cycle and denitration and sulfur resource recovery. The method comprises the following steps: 1, dedusting; 2, desulphurization and denitration; and 3, sulfur resource recovery. The problems of difficult treatment and secondary pollution of byproducts, high running cost and product singleness in the prior art are effectively solved through the method. Desorption, reduction and regeneration of desulphurization byproducts are fully utilized according to market demands. The purpose of the method is to treat wastes with wastes and kill many birds with one stone, circulate and recovery wasted sulfur resources in coal-fired flue gas with lowest cost, improve the comprehensive added values of the desulphurization byproducts and reduce the running cost, so the method has the advantages of realization of long-term and high-efficiency running and self-sufficiency closed cycle of dedusting, desulphurization and denitration, resource saving, energy saving, consumption reduction, no wastewater discharge, no secondary pollution, resource recovery and environment treatment requirement meeting, and increase of the economic and social benefits of enterprises.

Description

A kind of closed cycle desulphurization denitration and the method reclaiming Sulphur ressource
Technical field:
The present invention relates to technology and the field of environment protection of desulphurization and denitration, dedusting and resource reclaim, a kind of closed circuit Circulation desulfurization denitration and the method reclaiming Sulphur ressource.
Background technology:
China is a country with coal as main energy sources, and the electric power development general layout based on fire coal in a short time will not Change；Coal is a kind of low-grade flammable organic fossil energy, its petrofacies and chemical composition often have obvious difference and Inhomogeneity, wherein sulphur content content is also from 0.1～10%, and excursion is relatively big, and the task of FGD will be abnormal arduous and heavy Weight；At present, when being particularly main with desulfurization technology, techniques such as lime/lime stone method, Dual alkali, huge investment certainly will be brought Bear with running, and have the disadvantage that
(1) heavily de-light use: will SO in flue gas2Taking off, comprehensive utilization aspect is undesirable, and side-product is of poor quality, unstable Fixed, value is low；Secondary pollution is serious；
(2)SO2、NOXRemoval efficiency is low: SO in generally below 95%, and discharged gas fume2、NOXCurrent country can not be met The environmental emission standard of regulation, more cannot meet sulphur coal desulfurization and use；
(3) operating cost is high: floor space is big, and run stability is poor；Waste treatment project is obtaining the same of environmental benefit Time, need substantial amounts of circulation capital to put into；
(4) continuous fluctuation of service, it is impossible to ensureing low cost, long-term on-line monitoring runs, and maintenance capacity is big；
(5) resource serious waste, does not meets national energy-saving method and recycling economy development.
Although, this technology serves certain effect to the sulfur dioxide pollution alleviated in flue gas, but, often process one The desulfurated plaster of about 2.7 tons is produced, it is contemplated that by 2010, the desulfurated plaster that China stores up will be more than 100,000,000 tons during ton sulfur dioxide； And, desulfurated plaster quality is loose, it is impossible to compared with Ore cream, causes desulfurated plaster to be difficult by, so causing desulfurated plaster It is abandoned process, occupies the soil of up to a million mu；Simultaneously as abandoned desulfurated plaster distributes residual poison for a long time, through too Sun solar evaporation goes out pungent tart flavour；Acidic materials after volatilization have increased the weight of again the harm of acid rain；" the desulfurated plaster that rainy day piles up Mountain " the most all can collapse, impact road and cottage, and penetrate into soil, farmland, impurely lower and surface water, hence into Our food chain, if not taking active and effective measure, human body is caused greatly wound by induction by the harmful substance of its release The new state of an illness of evil.
As can be seen here, existing desulphurization denitration technology certainly will cause a large amount of waste residue, waste gas, waste water, seriously brings new life State is destroyed；Developing country such to China and the most most of country all also exist " can not building " and also " run not Rise " serious hindrance.
Currently, along with flue gas desulphurization project implementation and the progressively operation of desulfurization equipment, desulfurizing byproduct more comes The most, it is comprehensively utilized, economizes on resources, prevent secondary pollution from having become the important topic being currently badly in need of researching and solving； National Development and Reform Committee's " about some suggestions of promotion of FGD industrialization in thermal power plant " explicitly points out and " carries out cigarette further Desulfurization side-product comprehensively utilizes, and saves the energy, reduces and pollute, promotes recycling economy development, organize relevant scientific research institutions as early as possible In department, desulfurizing byproduct being carried out in-depth study, implementing desulfurizing byproduct must comprehensively utilize "；So, in order to subtract Of low pollution, reduces energy consumption, economizes on resources, develop a circular economy the most imperative.
SO2Environment scholar's eye is polluter, be " devil " be " enemy "；But, in changing scholar's eye, SO2It is can be again The resource utilized, is that " comrade-in-arms " even can also become " heroic "；Realize this target it is necessary to play chemical engineering science Effect, research, application investment and operating cost is low, by-product value is high, advanced technology, performance is stable, without secondary The new technique of pollution, new technology.
Summary of the invention:
It is an object of the invention to for above deficiency, and develop a kind of closed cycle desulphurization denitration and reclaim Sulphur ressource Method, the method can effectively solve to overcome the byproduct for treatment difficulty of prior art, have secondary pollution, and operating cost is high, product The problem such as single.Why the parsing reducing/regenerating of desulfurizing byproduct can be its object is to by the method: the treatment of wastes with processes of wastes against one another is the most , the Sulphur ressource that will waste in coal-fired flue-gas, carrys out circulation and stress with minimum cost, improves the comprehensive of desulfuration byproduct Added value and its running cost of reduction, make dust-removal and desulfurizing, denitration, circulation and stress Sulphur ressource, it is achieved long-term Effec-tive Function, improves enterprise Economic benefit and social benefit.
The present invention is achieved in that a closed cycle desulphurization denitration and the method reclaiming Sulphur ressource, wherein the method bag Include following steps:
The first step, dedusting: equipped with cleaner unit 32 at the flue 1 at rear portion at boiler flue gas outlet, and at its air inlet Install in flue 1, water tank 4 clean water supplied by high-pressure pump 5, water pipe 3, by the valve regulated stream on water pipe 3 with the wind Amount, water pipe 3 connects and has atomizer 2, and strong atomizing increases gas, the abundant affine contact of solid, liquid three-phase, frequent impact, moment Dust in coal-fired flue-gas is condensed the ash bucket 6 that the lower section of collection and cooling, removing dust device 32 fills, pressure screw ash ejector 7, reclaims institute The dust resource needed；
Second step, desulphurization and denitration: be that the coal-fired flue-gas after dust-collecting and heat exchanging purifies is introduced can take off simultaneously through smoke pipe 9 Sulfur, denitration absorption equipment 31 in, equipped with atomizer 8 on smoke pipe 9, air-introduced machine 19 can be contained in the import of absorption equipment 31, The outlet of absorption equipment 31 can also be contained in, be sequentially arranged with allotter 27, jet pipe 26, atomizer 28 in absorption equipment 31 and take off Hydrophone 30, and at its smoke inlet, installs by fluid reservoir 11 with the wind, through high-pressure pump supply with organic acid, acylate and Inorganic salt, alkali is the mixed aqueous solution of main component, as desulphurization and denitration absorbing liquid, by pipeline 25, a termination of pipeline 25 There is two-layer atomizer 28, increase gas, the abundant affine contact of solid, liquid three-phase, frequent impact, make the allocated device of its flue gas simultaneously 27, distribute upwards at its absorption equipment 31 inner homogeneous, and the desulphurization and denitration absorbing liquid supplied by high-pressure hydraulic pump, through pipeline 25 The ground floor nozzle 28 connected is atomized, and contacts downwards absorption, washing, purifying with flue gas adverse current, produces with reducing/regenerating device 21 more simultaneously Raw reducing gases absorbs through jet pipe 26 counter current contacting, washing reduction, then makes the flue gas after purification wash only through spiral board 29 Changing upwards, the second layer nozzle 28 connected through pipeline 25 again is atomized, and contacts downwards absorption, washing, purifying with flue gas adverse current, SO in removing coal-fired flue-gas2、NOxAnd dust, with after be dehydrated through dehydrator 30, then introduce cigarette through air-introduced machine 19 by flue 18 The outer row of chimney 20；
3rd step, recovery Sulphur ressource: be that its cleaning mixture is collected inflow circulating sedimentation tank 12 through hydrops plate 10, through dividing plate 13 After precipitation separation, using saturated cleaning mixture generates sulfur compound as resource, by water pump 15, pipeline, valve, filter 16 replace the reducing/regenerating raw material come in open and close, with reducing/regenerating device 21 reaction cycle in resolver 23 runs, on the one hand Make Sulphur ressource at outer row's solid-liquid mouth 24 of filter 16, separate and resolve conversion or the elemental sulfur of reducing/regenerating one-tenth, or from filtration At outer row's solid-liquid mouth 17 of device 16, isolate other product containing Sulphur ressource, as regenerative raw materials generation storage, it is possible to sprayed by reduction Mouth 22 joins in reducing/regenerating device 21, and the raw material in reducing/regenerating device 21, generates reducing/regenerating through microwave or pyroreaction Raw material generation storage, and by while association sulphurizing salt, hydrogen, carbon monoxide, (CH4、CO、H2) gaseous mixture, hydrogen sulfide, curing Carbon, carbonyl sulfide (cos) raw material, by pipeline, be respectively connected to resolver 23, in absorption equipment 31 through jet pipe 26 downwards and On the other hand flue gas adverse current contact absorbs, washing reduction, collects inflow circulating sedimentation tank 12 through hydrops plate 10 and is circulated, and makes point Cleaning mixture after from, through pipeline, valve, after filter 16, fine filter 14 filter, enters in fluid reservoir 11 and stores, inhale for circulation Receiving, resolve, the closed cycle of regenerated liquid, go round and begin again, circulation and stress Sulphur ressource uses.
The present invention can be achieved in that SO in described removing coal-fired flue-gas2、NOxAfter, resolve with cleaning mixture, point From, generation containing Sulphur ressource it is: sulfate, sulphite, polythionate, thiosulfate, imines disulfonic acid trisodium, sulfur Acid, sulfur.
The present invention it may also is that realize: described dust resource is dry dust, half dry dust, wet dust.
The present invention is it may also is that realize: the raw material in reducing/regenerating device 21 selects carbon respectively, Linesless charcoal, steam, Alkanes, pyrolysis gas of biomass, hydrogen peroxide.
The present invention is it may also is that realize: the sulphurizing salt of reducing/regenerating raw material simultaneously association, hydrogen, carbon monoxide, (CH4、CO、H2) gaseous mixture, hydrogen sulfide, Carbon bisulfide, carbonyl sulfide (cos) raw material is respectively connected to resolver 23, absorb Equipment 31 recycles.
The invention has the beneficial effects as follows:
1, the present invention collects dust-removal and desulfurizing, denitration, circulation and stress Sulphur ressource with integrated, and extensibility is strong, meets country more Come the most environmental requirements and discharge standard；
2, the method absorption efficiency is high, and heavily removing, huge profit are used；Make SO2、NOXRemoval efficiency is more than more than 98%, side-product Steady quality, circulation and stress by-product is wide in variety, purposes wide, is worth high benefit good, can be substantially reduced operating cost；
3, the present invention is taken up an area few, and water consumption is little, energy consumption is low, and dedusting, the efficiency height of desulphurization and denitration, non-secondary pollution, is existing There are desulfurization and dedusting, resource reclaim technology and field of environment protection one to innovate greatly, there is obvious economic benefit and social benefit；
4, the present invention can self-sufficient closed cycle, economize on resources, energy-saving and cost-reducing, i.e. non-wastewater discharge, again without secondary dirt Dye, to meet resource reclaim and environmental improvement requirement.
Accompanying drawing illustrates:
Fig. 1 is the apparatus and process schematic flow sheet of the present invention.
Detailed description of the invention:
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of closed cycle desulphurization denitration and the method for recovery Sulphur ressource, the method comprises the following steps:
The first step, dedusting: equipped with cleaner unit 32 at the flue 1 at rear portion at boiler flue gas outlet, and at its air inlet Install in flue 1, water tank 4 clean water supplied by high-pressure pump 5, water pipe 3, by the valve regulated stream on water pipe 3 with the wind Amount, water pipe 3 connects and has atomizer 2, and strong atomizing increases gas, the abundant affine contact of solid, liquid three-phase, frequent impact, moment Dust in coal-fired flue-gas is condensed the ash bucket 6 that the lower section of collection and cooling, removing dust device 32 fills, ash bucket 6 and pressure screw ash ejector 7 Connect, dry (or half-dried, wet) the dust resource required for the outlet recovery of pressure screw ash ejector 7, substitute existing highly energy-consuming completely Electrostatic, bag-type dust；
Second step, desulphurization and denitration: be that the coal-fired flue-gas after dust-collecting and heat exchanging purifies is introduced can take off simultaneously through smoke pipe 9 Sulfur, denitration absorption equipment 31 in, air-introduced machine 19 is contained in the outlet of absorption equipment 31, is sequentially arranged with allotter in absorption equipment 31 27, jet pipe 26, atomizer 28 and dehydrator 30, and at its smoke inlet, install by fluid reservoir 11 with the wind, supply through high-pressure pump The mixed aqueous solution as main component with organic acid (or acylate) and inorganic salt (or alkali) answered, inhales as desulphurization and denitration Receiving liquid, by pipeline 25, the one of pipeline 25 is terminated with two-layer atomizer 28, increases gas, the abundant affine contact of solid, liquid three-phase, Frequent impact, makes the allocated device of its flue gas 27 simultaneously, distributes upwards at its absorption equipment 31 inner homogeneous, supplies with by high-pressure hydraulic pump The desulphurization and denitration absorbing liquid answered, the ground floor nozzle 28 connected through pipeline 25 is atomized, and contacts downwards absorption with flue gas adverse current, washes Washing purification, the reducing gases counter current contacting produced with reducing/regenerating device 21 the most again absorbs, washing reduction, then makes the cigarette after purification Through spiral board 29 washing, purifying upwards, the second layer nozzle 28 connected through pipeline 25 again is atomized gas, downwards and flue gas is inverse Stream contact absorbs, washing, purifying, SO in removing coal-fired flue-gas2、NOxAnd dust, with after be dehydrated (heat exchange or heat) through dehydrator 30 Then the outer row of chimney 20 is introduced by flue 18 through air-introduced machine 19；
3rd step, recovery Sulphur ressource: be that its cleaning mixture is collected inflow circulating sedimentation tank 12, absorption equipment through hydrops plate 10 The lower outlet of 31 is connected by pipeline and circulating sedimentation tank 12, is provided with dividing plate 13 in circulating sedimentation tank 12, absorption equipment 31 Bottom is provided with hydrops plate 10, and the outlet of circulating sedimentation tank 12 is connected by pipeline, water pump 15, valve, the import of filter 16, One outlet of filter 16 is connected by pipeline and fine filter 14, and the outlet of fine filter 14 is connected by pipeline and fluid reservoir 11 Connecing, cleaning mixture flows into circulating sedimentation tank 12 through hydrops plate 10, after dividing plate 13 precipitation separation, will generate sulfur in saturated cleaning mixture Compound as resource, by water pump 15, pipeline, valve, mistake in the alternately open and close, with reducing/regenerating device 21 of filter 16 The reducing/regenerating raw material come runs in resolver 23 reaction cycle, on the one hand makes the Sulphur ressource outer row's solid-liquid mouth 24 from filter 16 Place, separates and resolves conversion or the elemental sulfur of reducing/regenerating one-tenth, or at outer row's solid-liquid mouth 17 of filter 16, isolate other and contain The product of Sulphur ressource, as regenerative raw materials generation storage, it is possible to joined in reducing/regenerating device 21 by reduction nozzle 22, and reduction is again Raw material in raw device 21, generates reducing/regenerating raw material through microwave or pyroreaction, and the raw material in reducing/regenerating device 21 selects respectively Carbon, Linesless charcoal, steam, alkanes, pyrolysis gas of biomass, the sulphurizing salt of association simultaneously, hydrogen, carbon monoxide, (CH4、CO、H2) Gaseous mixture, hydrogen sulfide, Carbon bisulfide, carbonyl sulfide (cos) raw material, be respectively connected to resolver 23 by pipeline, absorption sets Contact downwards absorption, washing reduction with flue gas adverse current through jet pipe 26 in standby 31, collect inflow circulating sedimentation tank 12 through hydrops plate 10 It is circulated, on the other hand makes the cleaning mixture after separation, through pipeline, valve, filter 16, fine filter 14, after filtration, enter storage Storing in flow container 11, for cyclic absorption, resolve, the closed cycle of regenerated liquid, go round and begin again, circulation and stress Sulphur ressource uses.
Thus can draw, breaking conventional conception of the present invention, autonomous innovation, develop closed cycle desulphurization denitration and reclaim sulfur The method of resource；Can effectively solve to overcome the byproduct for treatment difficulty of prior art, have secondary pollution, operating cost is high, product The problem such as single；According to the market demand, and making full use of the parsing reducing/regenerating to desulfurizing byproduct, the treatment of wastes with processes of wastes against one another is the most , the Sulphur ressource that will waste in coal-fired flue-gas, carrys out circulation and stress with minimum cost, improves the comprehensive of desulfuration byproduct Added value and its running cost of reduction, make dust-removal and desulfurizing, denitration, circulation and stress Sulphur ressource, it is achieved long-term Effec-tive Function, self-sufficient Closed cycle, economizes on resources, energy-saving and cost-reducing, i.e. non-wastewater discharge, again non-secondary pollution, meets resource reclaim and environmental improvement is wanted Ask, improve Business Economic Benefit and social benefit.

Claims (5)

1. a closed cycle desulphurization denitration and the method for recovery Sulphur ressource, it is characterised in that: the method comprises the following steps:
The first step, dedusting: at boiler flue gas outlet, flue (1) place at rear portion is equipped with cleaner unit (32), and at its air inlet Flue (1) is inner to be installed with the wind, water tank (4) clean water supplied by high-pressure pump (5), water pipe (3), by water pipe (3) Valve regulated flow, the upper connection of water pipe (3) has atomizer (2), strong atomizing, increases gas, solid, liquid three-phase is the most affine connects Touching, frequent impact, the dust in coal-fired flue-gas is condensed the ash bucket that the lower section of collection and cooling, removing dust device (32) fills by moment (6), pressure screw ash ejector (7), the dust resource required for recovery；
Second step, desulphurization and denitration: be by the coal-fired flue-gas after dust-collecting and heat exchanging purifies through smoke pipe (9) introduce can simultaneously desulfurization, In the absorption equipment (31) of denitration, air-introduced machine (19) can be contained in the import of absorption equipment (31), it is also possible to is contained in absorption equipment (31) outlet, is sequentially arranged with allotter (27), jet pipe (26), atomizer (28) and dehydrator in absorption equipment (31) (30), and at its smoke inlet, install by fluid reservoir (11) with the wind, through high-pressure pump supply with organic acid, acylate and Inorganic salt, alkali is the mixed aqueous solution of main component, as desulphurization and denitration absorbing liquid, by pipeline (25), the one of pipeline (25) It is terminated with two-layer atomizer (28), increases gas, the abundant affine contact of solid, liquid three-phase, frequent impact, make its flue gas through dividing simultaneously Orchestration (27), distributes upwards at its absorption equipment (31) inner homogeneous, and the desulphurization and denitration absorbing liquid supplied by high-pressure hydraulic pump, Ground floor nozzle (28) atomization connected through pipeline (25), contact downwards absorption, washing, purifying with flue gas adverse current, while the most again with and also The reducing gases that former regenerator (21) produces absorbs through jet pipe (26) counter current contacting, washing reduction, then makes the flue gas warp after purification Cross spiral board (29) washing, purifying upwards, second layer nozzle (28) atomization connected through pipeline (25) again, downward and flue gas Counter current contacting absorbs, washing, purifying, SO in removing coal-fired flue-gas2、NOxAnd dust, with after through dehydrator (30) be dehydrated, then lead to Cross flue (18) introducing chimney (20) to arrange outward；
3rd step, recovery Sulphur ressource: be that its cleaning mixture is collected inflow circulating sedimentation tank (12) through hydrops plate (10), through dividing plate (13) after precipitation separation, using the compound that generates sulfur in saturated cleaning mixture as resource, by water pump (15), pipeline, valve, The reducing/regenerating raw material reaction in resolver (23) come in filter (16) alternately open and close, with reducing/regenerating device (21) follows Inscription of loop, on the one hand makes Sulphur ressource from outer row's solid-liquid mouth (24) of filter (16), separates and resolve conversion or reducing/regenerating one-tenth Elemental sulfur, or from outer row's solid-liquid mouth (17) of filter (16), isolate other product containing Sulphur ressource, former as regeneration Material generation storage, it is possible to joined in reducing/regenerating device (21) by reduction nozzle (22), and other in reducing/regenerating device (21) is former Material, generates the generation storage of reducing/regenerating raw material through microwave or pyroreaction, and by while association sulphurizing salt, hydrogen, carbon monoxide, (CH4、CO、H2) gaseous mixture, hydrogen sulfide, Carbon bisulfide, carbonyl sulfide (cos) raw material, by pipeline, be respectively connected to resolve Device (23), contacts downwards absorption, washing reduction through jet pipe (26) in absorption equipment (31), converges through hydrops plate (10) with flue gas adverse current On the other hand collection flows into circulating sedimentation tank (12) and is circulated, and makes the cleaning mixture after separation, through pipeline, valve, filter (16), After fine filter (14) filters, enter storage in fluid reservoir (11), for cyclic absorption, resolve, the closed cycle of regenerated liquid, Zhou Erfu Beginning, circulation and stress Sulphur ressource uses.
A kind of closed cycle desulphurization denitration the most according to claim 1 and the method reclaiming Sulphur ressource, it is characterised in that: institute SO in the removing coal-fired flue-gas stated2、NOxAfter, with cleaning mixture resolve, separate, generation containing Sulphur ressource be: sulfate, sulfurous acid Salt, polythionate, thiosulfate, imines disulfonic acid trisodium, sulphuric acid, sulfur.
A kind of closed cycle desulphurization denitration the most according to claim 1 and the method reclaiming Sulphur ressource, it is characterised in that: institute The dust resource stated is dry dust, half dry dust, wet dust.
A kind of closed cycle desulphurization denitration the most according to claim 1 and the method reclaiming Sulphur ressource, it is characterised in that: also Raw material in former regenerator (21) selects carbon, Linesless charcoal, steam, alkanes, pyrolysis gas of biomass, hydrogen peroxide respectively.
A kind of closed cycle desulphurization denitration the most according to claim 1 and the method reclaiming Sulphur ressource, it is characterised in that: also The sulphurizing salt of former regenerative raw materials association simultaneously, hydrogen, carbon monoxide, (CH4、CO、H2) gaseous mixture, hydrogen sulfide, Carbon bisulfide, Carbonyl sulfide (cos) raw material is respectively connected to resolver (23), and absorption equipment recycles.
CN201610650541.8A 2016-08-09 2016-08-09 Method used for desulphurization and denitration closed cycle and sulfur resource recovery Pending CN106039941A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110252092A (en) * 2019-06-19 2019-09-20 大唐郓城发电有限公司 A kind of flue gas input unit for power plant desulfuration absorbing tower
CN112121632A (en) * 2020-09-24 2020-12-25 淄博海益精细化工有限公司 Process and device for recycling liquefied gas sweetening tail gas
CN113082919A (en) * 2021-03-29 2021-07-09 北京中航天业科技有限公司 Efficient wet dust removal device for steel slag treatment workshop

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110252092A (en) * 2019-06-19 2019-09-20 大唐郓城发电有限公司 A kind of flue gas input unit for power plant desulfuration absorbing tower
CN112121632A (en) * 2020-09-24 2020-12-25 淄博海益精细化工有限公司 Process and device for recycling liquefied gas sweetening tail gas
CN113082919A (en) * 2021-03-29 2021-07-09 北京中航天业科技有限公司 Efficient wet dust removal device for steel slag treatment workshop

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Application publication date: 20161026