CN103055682A - Waste comprehensive treatment process and equipment for solid fuel generating station - Google Patents
Waste comprehensive treatment process and equipment for solid fuel generating station Download PDFInfo
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- CN103055682A CN103055682A CN2012105917075A CN201210591707A CN103055682A CN 103055682 A CN103055682 A CN 103055682A CN 2012105917075 A CN2012105917075 A CN 2012105917075A CN 201210591707 A CN201210591707 A CN 201210591707A CN 103055682 A CN103055682 A CN 103055682A
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- silicate
- power station
- carbon dioxide
- solid fuel
- gas
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Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000004449 solid propellant Substances 0.000 title claims abstract description 27
- 230000008569 process Effects 0.000 title claims abstract description 16
- 239000002699 waste material Substances 0.000 title abstract 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 108
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 83
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 83
- 238000006243 chemical reaction Methods 0.000 claims abstract description 61
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims abstract description 59
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims abstract description 59
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 54
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 53
- 239000007789 gas Substances 0.000 claims abstract description 45
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 39
- 238000010521 absorption reaction Methods 0.000 claims abstract description 38
- 239000013535 sea water Substances 0.000 claims abstract description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 150000002500 ions Chemical class 0.000 claims abstract description 11
- 150000004760 silicates Chemical class 0.000 claims abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 69
- 239000000460 chlorine Substances 0.000 claims description 63
- 239000003513 alkali Substances 0.000 claims description 55
- 239000000243 solution Substances 0.000 claims description 46
- 239000003546 flue gas Substances 0.000 claims description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 29
- 239000007921 spray Substances 0.000 claims description 19
- 238000012545 processing Methods 0.000 claims description 18
- 239000002002 slurry Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 17
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 17
- 229910052801 chlorine Inorganic materials 0.000 claims description 17
- 239000008151 electrolyte solution Substances 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 15
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 11
- 235000013312 flour Nutrition 0.000 claims description 11
- 239000004575 stone Substances 0.000 claims description 11
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 239000010453 quartz Substances 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 8
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 7
- 239000002585 base Substances 0.000 claims description 7
- 239000006228 supernatant Substances 0.000 claims description 7
- 239000006166 lysate Substances 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- 239000013049 sediment Substances 0.000 claims description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 5
- 241001131796 Botaurus stellaris Species 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000006477 desulfuration reaction Methods 0.000 claims description 4
- 230000023556 desulfurization Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002086 nanomaterial Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 241000894007 species Species 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 2
- 239000002956 ash Substances 0.000 abstract description 17
- 239000002028 Biomass Substances 0.000 abstract description 13
- 229910021645 metal ion Inorganic materials 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 6
- 239000002253 acid Substances 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000010883 coal ash Substances 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 238000004090 dissolution Methods 0.000 abstract 1
- 239000002737 fuel gas Substances 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 239000010881 fly ash Substances 0.000 description 15
- 239000011575 calcium Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 239000003245 coal Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000010248 power generation Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- -1 NaCl Chemical class 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
Classifications
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/141—Preparation of hydrosols or aqueous dispersions
- C01B33/142—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates
- C01B33/143—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates of aqueous solutions of silicates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/306—Alkali metal compounds of potassium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/402—Alkaline earth metal or magnesium compounds of magnesium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/12—Methods and means for introducing reactants
- B01D2259/124—Liquid reactants
-
- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
-
- 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
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention discloses a waste comprehensive treatment process and equipment for a solid fuel generating station. In the process, thermal refined seawater containing metal ions like Na<+>, K<+>, Ca<2+> and Mg<2+> is electrolyzed and generates alkaline matters and acid gas, the alkaline matters are used to absorb carbon dioxide in emitted fuel gas of the generating station, and the carbon dioxide is treated in a harmless manner and then emitted to the sea to be stored, the acid gas is used to synthesize hydrochloric acid and conducts a dissolution replacement reaction with coal ash, biomass ash or cheap silicate salt mine emitted by the generating station, the separated dissolved solution containing the ions of Na<+>, K<+>, Ca<2+>, Mg<2+> and Cl <->is recycled and returned to the thermal refined seawater to continue to be electrolyzed, and the separated SiO2 is used as an industrial raw material, so that virtuous circle of comprehensive treatment of the waste of the generating station is formed. The equipment mainly comprises an electrolysis device, a carbon dioxide absorption tower, a hydrogen chloride synthesis tower, a silicate reactor, a cyclone separator and a vacuum belt conveyer, so that the waste of the generating station can be comprehensively utilized to the greatest extent.
Description
Technical field
The present invention relates to the environmental protection technology in power station, refer to particularly a kind of solid fuel power station discarded object comprehensive processing technique and equipment thereof.
Background technology
At present, the raw material major part that adopt in the solid fuel power station is coal, also has small part to adopt the living beings of reusable edible.China is the first big country of coal fired power generation in the world, and the coal fired power generation unit accounts for about 70% of whole generating sets, and biomass power generation is relatively less.Discarded object flyash and greenhouse gases carbon dioxide that China's coal fired power generation discharges have occupied the hat in the world, and the biomass ash that biomass burning produces is also increasing year by year.Have statistics to show: the total release of China's flyash is above 3.75 hundred million tons, the discharge capacity in carbon dioxide every year is also above 6,100,000,000 tons, and both discharge capacitys are also in continuous increase, cause thus global warming, climate change and the aspect such as ecological, economic, social produced the problem of environmental pollution of combined influence also day by day serious, the approach that forces people always to address these problems in searching.
For flyash or biomass ash, its Main Ingredients and Appearance is silicates, also contain the metallicses such as a large amount of Na, K, Ca, Mg, China's building materials industry is few to its recycling, present utilization rate is only about 30%, mainly be used to base and the backfill of building the road, still there is every year more than 2.6 hundred million ton of flyash to fail to utilize, can only be stored in the grey storehouse, a large amount of industrial lands and accumulating relevant equipment have not only been taken, and flyash per ton store build Ku Fei and running cost approximately needs 10 ~ 100 yuan, the accumulation cost is surprising.Simultaneously, when flyash is used for building the road the operations such as base, also be subjected to a series of restriction of area, time, weather, use very unbalanced.Therefore, how utilizing flyash or minimizing flyash to store is the important environment problem that this area scientific research personnel faces.
For carbon dioxide, although it is the useful resources in a plurality of fields such as industry, agricultural, food, health, medical treatment, but it is extremely small that its application quantity is compared with discharge capacity, and the formed greenhouse effects of excessive emissions play adverse influence to the mankind's living environment.Nowadays controlling CO2 emission has become global problem, increasing national consciousness to the capture of carbon dioxide and Plugging Technology Applied for the meaning of slowing down climate warming.
Enter atmosphere in order to control carbon dioxide, this area scientific research personnel has designed various carbon dioxide Plugging Technology Applieds, mainly contains following three kinds of modes: the first is that it is sealed in the various geology interlayers with gaseous form; The second is that it is sealed in the deep-sea with gaseous form; The third is that it is sealed in the carbonate with solid-state form.Seal up for safekeeping in the mode for three kinds, the first geological storage technology has obtained certain application, but the variation of geological condition can cause the increase of unsafe factor, and along with the extension of time, its insecurity also can be more and more outstanding.The second deep-sea Plugging Technology Applied then easily destroys the deep-sea ecological environment, present rarely seen application.The third carbonate Plugging Technology Applied claims again the mineral Plugging Technology Applied, best to the fixed effect of carbon dioxide in theory, the carbon dioxide that is transformed into salt can not discharged into the atmosphere again, therefore obtained paying close attention to widely, but it still rests on the experimental stage of stabilizing carbon dioxide at present, and is still far away apart from practical application.
Summary of the invention
Purpose of the present invention aims to provide a kind of solid fuel power station discarded object comprehensive processing technique and equipment thereof.This technology and equipment is by the raw material of electrolytic seawater or modified seawater generation absorbent etc., the power station can being discharged carbon dioxide conversion in the flue gas, to become carbonate fixedly to be sealed in marine greatly, take full advantage of simultaneously lime-ash and the cheap auxiliary conversion cycles of finishing carbon dioxide of silicate mine stone flour such as flyash, biomass ash of power station discharging, realize to greatest extent the comprehensive utilization of power station discarded object.
For achieving the above object, the solid fuel power station discarded object comprehensive processing technique that the present invention is designed, be that the process that carbon dioxide in the flue gas and the silicates material in the lime-ash utilize is mutually discharged in the power station, it is characterized in that: this technique comprises the steps:
1) with natural sea-water or the modified seawater that is added with the hydrochloric acid salt as electrolyte solution, pass into dc source and it is carried out electrolytic separation process, obtain respectively sour gas H at negative electrode and the anode of electrolysis unit
2And Cl
2, making simultaneously electrolyte solution become main component is NaOH, KOH, Ca (OH)
2, Mg (OH)
2Mixed-alkali solution;
2) gained mixed-alkali solution is sprayed in the carbon dioxide absorption tower, in carbon dioxide absorption tower, pass into the flue gas that discharge in the power station simultaneously, make the CO in the flue gas
2With the injection droplet counter current contacting of mixed-alkali solution, sufficient chemical absorbing reaction occurs, generate stable Na
+, K
+, Ca
2+, Mg
2+Ionic species carbonate slurries;
3) to removing CO
2Flue gas make further purified treatment, remove the mixed-alkali droplets of substance of wherein carrying secretly, the gained clean flue gas enters atmosphere; Simultaneously, obtaining carbonate slurries are done further harmless treatment after, it is entered the sea;
4) respectively to obtaining H
2And Cl
2Carry out purification process, with H
2And Cl
2In the moisture content and the alkali lye that carry separate, and be back in the electrolyte solution;
5) respectively to the H after the dehydration
2And Cl
2Carry out cooling processing, make H
2And Cl
2Temperature be reduced to the zone that is suitable for synthetic reaction;
6) with the H after the cooling processing
2And Cl
2Import in the hydrogen chloride synthetic tower synchronously, make H
2And Cl
2Stable chemical combustion reaction occurs, and generates HCl gas;
7) injection technology water in the silicate reaction device adds the lime-ash that discharges in the power station simultaneously or/and the silicate mine stone flour stirs and makes the silicates material in the lime-ash or/and the silicate mine stone flour fully mixes with process water, is mixed with silicate solutions;
8) the HCl gas that generates is passed in the silicate solutions of preparing, it is fully contacted with aqueous silicate solution, violent chemical replacement reaction occurs, with the Na in the silicate
+, K
+, Ca
2+, Mg
2+The ion dissolving cements out, and obtains to contain hydrochloric acid salt soluble in water, a large amount of Cl
-Ion and solid-state SiO
2The hydrochloride slurries;
9) gained hydrochloride slurries are carried out concentration, with solid-state SiO wherein
2Concentrating and separating out will be overflowed simultaneously and contain Na
+, K
+, Ca
2+, Mg
2+And Cl
-The lysate of ion is transported to and again participates in circulation in the electrolyte solution.
Further, in the described step 1), modified seawater be with the bittern water after natural sea-water, the desalinization or artificial sea water as solvent, with NaCl as solute formulated can electrolysis produce capacity H
2And Cl
2Seawater.Adopt such raw material, its cost is almost nil, and inexhaustible, without cease with it.When particularly adopting the discarded object bittern water after the desalinization, metal ion wherein is more concentrated to be concentrated, and electrolyte solution is transformed into the better effects if of mixed-alkali solution, and salvage value is also higher.
Further, described step 2) in, the flue gas that discharge in the power station through after pre-dedusting and the desulfurization processing, is passed in the carbon dioxide absorption tower successively again.Flue gas more is conducive to mixed-alkali solution absorption fixation of C O after pre-dust removal process
2, and relief liquor is comparatively pure, can reduce the difficulty of subsequent treatment; And the flue gas of selecting desulfurization to process, can avoid sulfide to be dissolved in the mixed-alkali solution affects CO
2Absorption, thereby fixation of C O to greatest extent
2
Further, in the described step 6), regulate control H
2And Cl
2Mol ratio be 1.05 ~ 1.10: 1.Like this, can guarantee the Cl of toxic side effect
2Complete reaction is avoided Cl
2Leakage the personnel that cause injure.
Further, in the described step 8), HCl gas is passed in the gas distributor of silicate solutions bottom, its anti-blocking pore from gas distributor is sprayed downwards, form the HCl bubble that moves upward in a large number, and adopt agitator stirring, broken HCl bubble, prolong the time that the HCl bubble moves upward, thereby make the HCl bubble fully contact mixing with silicate solutions, and gas-liquid mixture is mobile from a side direction opposite side through the agitator stirring, until displacement reaction is complete.Like this, can take full advantage of HCl gas, with in the silicate solutions Na
+, K
+, Ca
2+, Mg
2+The ion dissolving cements out.
Further, in the described step 9), first gained hydrochloride slurries are carried out rotational flow separation, the supernatant that eddy flow overflows is transmitted back to sustainable participation circulation in the silicate solutions, and the sediment that eddy flow produces carries out Vacuum Concentration again, isolates and contains Na
+, K
+, Ca
2+, Mg
2+And Cl
-The lysate of ion is transported to and again participates in circulation, the concentrated solid-state SiO that obtains in the electrolyte solution
2As building the road base or backfilling material, perhaps be processed into SiO
2Nano material.Like this, minute two-stage is carried out concentration to the hydrochloride slurries, alkaline metal ions solution as much as possible can be added in the electrolyte solution, and the conservation cost, and form optimum reaction cycle; Simultaneously, the SiO that goes out of concentrating and separating
2Purity is higher, quality is better, purposes is wider.
Equally, for achieving the above object, the solid fuel power station discarded object comprehensive treatment equipment that the present invention is designed mainly is comprised of electrolysis unit, carbon dioxide absorption tower, hydrogen chloride synthetic tower, silicate reaction device, cyclone separator and vacuum belt machine, and its special character is:
The cathodic hydrogen outlet of described electrolysis unit links to each other with the hydrogen input of hydrogen chloride synthetic tower with hydrogen cooler by hydrogen gas segregator successively, the anode chlorine outlet of described electrolysis unit links to each other with the chlorine input of hydrogen chloride synthetic tower with Chlorine Cooler by the chlorine separator successively, and the liquid return hole of the liquid return hole of described hydrogen gas segregator and chlorine separator all reclaims mouth with the mixed alkali liquor of electrolysis unit and links to each other.
The mixed alkali liquor output of described electrolysis unit links to each other with the inner chamber of carbon dioxide absorption tower, the smoke inlet top, bottom of described carbon dioxide absorption tower is provided with the flue gas flow equalizing device, the exhanst gas outlet below, top of described carbon dioxide absorption tower is provided with alkali liquor recovery device and alkali lye spray equipment, and described alkali lye spray equipment links to each other with the bottom slurry pool of carbon dioxide absorption tower by NaOH solution circulating pump.
The hydrogen chloride output of described hydrogen chloride synthetic tower links to each other with gas distributor by air shooter, described gas distributor is arranged on silicate reaction device bottom one side, be furnished with a plurality of agitators in the described silicate reaction device, the reaction paste outlet of described silicate reaction device bottom opposite side links to each other with the input of cyclone separator, the sediment output of described cyclone separator links to each other with the material inlet of vacuum belt machine, and the filtrate output of described vacuum belt machine links to each other by additional mouthful of the mixed alkali liquor of liquid delivery tube and electrolysis unit.
As preferred version, it also comprises the silicate powder feed bin, and the bottom discharge mouth of described silicate powder feed bin links to each other by the dog-house of discharging distributor with the silicate reaction device.The silicate powder feed bin is for lime-ash or finished silicon acid salt ore powder such as the flyash that stores the power station discharging, biomass ashs, the amount that the discharging distributor enters the silicate reaction device for the whereabouts of controlling lime-ash or silicate mine stone flour, it mixes rapidly under the effect of agitator with process water, then participates in reaction.
Further, top one side of described silicate powder feed bin is provided with small-sized sack cleaner.The dust that flies upward in order to reclaim silicate powder feed bin inside.
Again further, the mixed alkali liquor output of described electrolysis unit links to each other with the inner chamber of carbon dioxide absorption tower by NaOH solution circulating pump, alkali lye spray equipment successively.Like this, mixed alkali liquor directly sprays in the carbon dioxide absorption tower by the alkali lye spray equipment, can be omitted in the equipment such as absorbent entrance, associated conduit and delivery pump are set on the carbon dioxide absorption tower, and simplified apparatus forms, and saves the equipment investment cost.
Again further, between alkali lye spray equipment and flue gas flow equalizing device, be provided with CO in the described carbon dioxide absorption tower inner chamber
2The dry load layer.Like this, can prolong the time that mixed-alkali solution contacts with flue gas adverse current, impel carbon dioxide and mixed-alkali solution in the flue gas fully to react, improve the absorptivity of carbon dioxide.
Further, described hydrogen chloride synthetic tower adopts the water-cooled constant temperature synthetic tower that quartz lamp head ignites.It guarantees temperature constant in the synthetic tower, Cl by cooling water
2Walk the internal layer of quartz lamp head, H
2Walk the skin of quartz lamp head, the two is at the quartz lamp head harmonious combustion, and synthetic HCl gas upwards flows, and discharges from the top after cooling, and enters next step reaction.Labyrinth and the technique of industrial salt manufacturing acid have been saved thus.
Further, described gas distributor is made of pipeline or pipe network, is evenly equipped with the anti-blocking pore that Open Side Down on described pipeline or the pipe network.Like this design, HCl gas is constantly overflowed from anti-blocking pore downwards, form a large amount of HCl bubbles, then move upward, stir through agitator, further hinder the HCl bubble and move upward, prolong the time that moves upward, the HCl bubble is broken and becomes gradually little simultaneously, the HCl minute bubbles of heat are very easily water-soluble, it fully contacts mixing with silicate solutions, and violent heat exchange occurs, and can impel the reaction acceleration.
Again further, the orientation corresponding with its reaction paste outlet, described silicate reaction device top is provided with tail gas drop retracting device.Like this, can make residual minute quantity H
2Entrained hydrochloride plasmoid humor is effectively reclaimed, and guarantees that tail gas obtains harmless emission.
Again further, the supernatant output of described cyclone separator links to each other with the fluid infusion mouth of silicate reaction device.Like this, can take full advantage of the preparation that supernatant participates in silicate solutions, save process water, form good reaction cycle.
The present invention will contain Na
+, K
+, Ca
2+, Mg
2+The modified seawater electrolysis of metal ion generates alkaline matter and sour gas, utilizes the carbon dioxide in the alkaline matter absorption power station discharging flue gas, is disposed to marine sealing up for safekeeping after the harmless treatment; Utilize the sour gas synthetic hydrochloric acid, and utilize flyash, biomass ash or the cheap silicate mine stone flour of hydrochloric acid and power station discharging to dissolve displacement reaction, wherein the isolated Na that contains
+, K
+, Ca
2+, Mg
2+, Cl
-The solution of ion is returned in the modified seawater and continues electrolysis after reclaiming; To wherein isolated SiO
2Further utilize as the raw material of industry, thereby form the benign cycle of the power station discarded object being carried out integrated treatment.Its advantage is mainly reflected in following several respects:
The modified seawater electrolysis that one, utilization of the present invention are extremely cheap produces H
2And Cl
2Simultaneously so that modified seawater is transformed into mixed-alkali solution, adopt the carbon dioxide in this mixed-alkali solution absorption solid fuel power station discharging flue gas, can be fixed in the carbonate, and be sealed in steadily in the long term marinely greatly, solved carbon dioxide long-term accumulation that mankind's activity produces to having a strong impact on that global climate causes.
Its two, the present invention produces H with modified seawater electrolysis
2And Cl
2Synthesize HCl gas, HCl gas directly is passed into by in the formulated silicate solutions of flyash, biomass ash and/or silicate mine stone flour and process water again, HCl gas is met water and is formed hydrochloric acid, with the Na in the silicate
+, K
+, Ca
2+, Mg
2+The metal ion dissolving cements out, in company with free Cl
-Ion adds in the modified seawater together, continues electrolysis and produces H
2And Cl
2, both realized the benign cycle of carbon dioxide absorption reaction, realized again Cl
-Ion recycling reduced the interpolation of the hydrochloric acid salts such as NaCl, and material loss is minimum.
They are three years old, the present invention takes full advantage of flyash that coal fired power plant produces, biomass ash that biomass power plant produces as the substitute of silicate mine stone flour, effectively reduced the loss of natural material, make simultaneously the discarded lime-ash in power station obtain good improvement, significantly reduced the storage maintenance cost of these lime-ash.
They are four years old, the present invention is stored in the carbon dioxide absorption in the flue gas in the seawater in the ubiquitous carbonate, render to and large marinely can not produce the Ocean acidification phenomenon, and be useful and harmless to ocean disposal Calcium carbonate material to the shellfish biology, efficiently solve so simple deep-sea and store CO
2Negative effect to the ocean generation.
Its five, the synthetic preferred water-cooled constant temperature synthetic tower of HCl gas in the present device.Guarantee that by the interlayer cooling water temperature is constant all the time in the tower, and then guarantee H
2And Cl
2Harmonious combustion, and will react the generation heat by HCl gas and take away.Like this, labyrinth and the technique of industrial salt manufacturing acid have been saved.
They are six years old, pass through in the present device at the gas distributor setting anti-blocking pore that Open Side Down, can be with HCl gas fully uniform and be dissolved in the silicate solutions, the heat that the heat that HCl gas is carried by a series of stirring simultaneously and dissolving produce rapidly and silicate solutions exchange, thereby impel its complete reaction, improve the displacement efficiency of metal ion.
Its seven, all be provided with the drop retracting device at the exhaust emissions of carbon dioxide absorption tower, the exhaust emissions place of silicate reaction device in the present device, thereby make tail gas hazard-free discharging, very friendly to environment.
Its eight, the silicate lysate SiO that concentrating and separating goes out in the technique of the present invention
2Be the good raw material of industry, can directly be used that be mainly used in building the road base and backfill also can be carried out degree of depth chemical industry and be treated to SiO
2Nano material.
Description of drawings
Fig. 1 is the structural representation of a kind of solid fuel power station discarded object comprehensive treatment equipment.
The specific embodiment
Below in conjunction with the drawings and specific embodiments technique of the present invention and equipment thereof are described in further detail.
Solid fuel power station discarded object comprehensive treatment equipment shown in the figure mainly is comprised of parts such as transformation and fairing 1, electrolysis unit 2, carbon dioxide absorption tower 5, hydrogen chloride synthetic tower 20, silicate powder feed bin 17, silicate reaction device 10, cyclone separator 14 and vacuum belt machines 13.Wherein:
The output of transformation and fairing 1 links to each other with the power interface of electrolysis unit 2.The cathodic hydrogen outlet of electrolysis unit 2 links to each other with the hydrogen input of hydrogen chloride synthetic tower 20 with hydrogen cooler 22 by hydrogen gas segregator 21 successively, the anode chlorine outlet of electrolysis unit 2 links to each other with the chlorine input of hydrogen chloride synthetic tower 20 with Chlorine Cooler 23 by chlorine separator 24 successively, and the liquid return hole of the liquid return hole of hydrogen gas segregator 21 and chlorine separator 24 all reclaims mouth with the mixed alkali liquor of electrolysis unit 2 and links to each other.
The absorption tower that carbon dioxide absorption tower 5 adopts spray structure, smoke inlet top, its underpart is provided with flue gas flow equalizing device 3, its exhanst gas outlet below, top is provided with alkali liquor recovery device 7, alkali liquor recovery device 7 belows are provided with alkali lye spray equipment 6, are provided with CO between alkali lye spray equipment 6 and the flue gas flow equalizing device 3
2Dry load layer 4, alkali lye spray equipment 6 links to each other with the bottom slurry pool of carbon dioxide absorption tower 5 by NaOH solution circulating pump 8.The mixed alkali liquor output of electrolysis unit 2 links to each other with the inner chamber of carbon dioxide absorption tower 5 by NaOH solution circulating pump 8, alkali lye spray equipment 6 successively.
The water-cooled constant temperature synthetic tower that hydrogen chloride synthetic tower 20 adopts quartz lamp head to ignite, its hydrogen chloride output links to each other with gas distributor 9 by air shooter 19.Gas distributor 9 is installed in silicate reaction device 10 bottoms one side, and it is made of pipeline or pipe network, is evenly equipped with the anti-blocking pore (not shown) that Open Side Down on pipeline or the pipe network.The reaction paste outlet of silicate reaction device 10 bottom opposite sides links to each other with the input of cyclone separator 14, and the orientation corresponding with its reaction paste outlet, silicate reaction device 10 tops is equipped with tail gas drop retracting device 11.Be furnished with successively several agitators 15 from a side to opposite side in the silicate reaction device 10, be furnished with four in the present embodiment.
Silicate powder feed bin 17 is arranged in silicate reaction device 10 tops, and is corresponding with the position of gas distributor 9.The bottom discharge mouth of silicate powder feed bin 17 links to each other by the dog-house of discharging distributor 16 with silicate reaction device 10.Top one side of silicate powder feed bin 17 is provided with small-sized sack cleaner 18.
The supernatant output of cyclone separator 14 links to each other with the fluid infusion mouth of silicate reaction device 10.The sediment output of cyclone separator 14 links to each other with the material inlet of vacuum belt machine 13, and the filtrate output of vacuum belt machine 13 links to each other by additional mouthful of the mixed alkali liquor of liquid delivery tube 12 and electrolysis unit 2.
The technological process of above-mentioned solid fuel power station discarded object comprehensive treatment equipment is as follows:
1) adds NaCl in the bittern water after natural sea-water, desalinization or the artificial sea water, be mixed with and electrolysis produce capacity H
2And Cl
2Modified seawater, and with its electrolyte solution as electrolysis unit 2.The power station high-tension electricity gives electrolysis unit 2 energisings after transformation and fairing 1 are processed into required direct current.At this moment, negative electrode and the anode at electrolysis unit 2 produces respectively sour gas H
2And Cl
2, making simultaneously electrolyte solution become main component is NaOH, KOH, Ca (OH)
2, Mg (OH)
2Mixed-alkali solution.
2) the mixed-alkali solution in the electrolysis unit 2 by NaOH solution circulating pump 8, alkali lye spray equipment 6, sprays into wherein from carbon dioxide absorption tower 5 tops successively.Meanwhile, after the flue gas pre-dedusting of process that discharge in the power station and desulfurization are processed, enter from carbon dioxide absorption tower 5 bottoms.Behind flue gas flow equalizing device 3 uniform air-flows, flue gas upwards flows, with the alkaline droplet of downward spray at CO
2Dry load layer 4 interior counter current contacting, alkaline droplet is slow decreasing under the retardation of updraft, the CO in the flue gas
2Fully react with it and be absorbed.8 alkaline droplet and CO that can further guarantee to have neither part nor lot in reaction of NaOH solution circulating pump
2Counter current contacting repeatedly, thus guarantee that the alkali lye droplet absorbs fixation of C O fully
2, generate stable Na
+, K
+, Ca
2+, Mg
2+Ionic species carbonate slurries.
3) removed CO
2Flue gas through alkali liquor recovery device 7, the mixed-alkali drop interception of wherein carrying secretly is reclaimed, the gained clean flue gas enters the atmosphere from the top exhanst gas outlet of carbon dioxide absorption tower 5.And absorbed CO
2The Stable Carbon hydrochlorate slurries of rear formation through after the further harmless treatment, enter the sea with it, reach fixing and store CO
2Purpose.
4) H that produces of electrolysis unit 2
2And Cl
2Carry out purification process through hydrogen gas segregator 21 and chlorine separator 24 respectively, with H
2And Cl
2In the moisture content and the alkali lye that carry separate, and reclaim from the mixed alkali liquor of electrolysis unit 2 and mouthful to turn back to the electrolyte solution.
5) H after the dehydration
2And Cl
2Carry out cooling processing through hydrogen cooler 22 and Chlorine Cooler 23 respectively again, make H
2And Cl
2Temperature be reduced to the zone that is suitable for synthetic reaction.
6) cooled H
2And Cl
2The quartz lamp head that enters into synchronously hydrogen chloride synthetic tower 20 by piping and valve carries out synthetic reaction, control H
2And Cl
2Mol ratio be 1.05 ~ 1.10: 1, to guarantee Cl
2Complete reaction.Cl in the reaction
2Walk the quartz lamp head internal layer, H
2Walk the quartz lamp head skin, the two burns at quartz lamp head, and synthetic HCl gas upwards flows, after the cooling system cooling of hydrogen chloride synthetic tower 20 self, from hydrogen chloride synthetic tower 20 Base top contacts.
7) store in advance power station discarded object flyash, biomass ash in the silicate powder feed bin 17, perhaps the silicate mine stone flour also can be their mixture.Press design quantity by discharging distributor 16, they are transported in the silicate reaction device 10 continuously.Simultaneously, inject the process water of design flow in the silicate reaction device 10, make the silicates material in flyash, the biomass ash or/and the silicate mine stone flour fully mixes with process water by agitator 15, be mixed with silicate solutions.The dust that the small-sized sack cleaner 18 of silicate powder feed bin 17 tops one side in time flies upward in the recovery bin.
8) HCl gas enters into the gas distributor 9 of silicate reaction device 10 bottoms by air shooter 19, and spray downwards by the anti-blocking pore on it, in silicate solutions, form a large amount of HCl bubbles, the HCl bubble moves upward subsequently, stir obstruction HCl bubble through agitator 15 up, prolong run duration upwards, and make the HCl bubble breaking, it is little that diameter becomes gradually, the HCl minute bubbles of heat can fully contact with silicate solutions, and the HCl bubble is very easily soluble in water, thereby violent heat exchange occurs, and impels the reaction acceleration.Simultaneously, gas-fluid two-phase mixture stirs from a side direction opposite side through agitator 15 and flows, and violent chemical replacement reaction occurs, with the Na in the silicate
+, K
+, Ca
2+, Mg
2+The ion dissolving cements out, and obtains to contain hydrochloric acid salt soluble in water, a large amount of Cl
-Ion and solid-state SiO
2The hydrochloride slurries.Wherein, the H of residual minute quantity
2After 11 processing of tail gas drop retracting device, harmless emission.
The hydrochloride slurries of 9) discharging from the 10 bottom reaction paste outlets of silicate reaction device enter the cyclone separator 14, and the supernatant that eddy flow overflows returns wherein from the fluid infusion mouth of silicate reaction device 10, the sustainable participation circulation.Eddy flow produce moisture content approximately about 50% sediment enter in the vacuum belt machine 13 and concentrate again, isolate and contain Na
+, K
+, Ca
2+, Mg
2+And Cl
-The lysate of ion turns back to the electrolyte solution from additional mouthful of the mixed alkali liquor of electrolysis unit 2 by liquid delivery tube 12, again participates in circulation.The solid-state SiO that Vacuum Concentration obtains
2As building the road base or backfilling material, perhaps be processed into the SiO of high-quality exquisiteness
2Nano material.
Claims (15)
1. solid fuel power station discarded object comprehensive processing technique, it is that the process that carbon dioxide in the flue gas and the silicates material in the lime-ash utilize is mutually discharged in the power station, it is characterized in that: this technique comprises the steps:
1) with natural sea-water or the modified seawater that is added with the hydrochloric acid salt as electrolyte solution, pass into dc source and it is carried out electrolytic separation process, obtain respectively sour gas H at negative electrode and the anode of electrolysis unit
2And Cl
2, making simultaneously electrolyte solution become main component is NaOH, KOH, Ca (OH)
2, Mg (OH)
2Mixed-alkali solution;
2) gained mixed-alkali solution is sprayed in the carbon dioxide absorption tower, in carbon dioxide absorption tower, pass into the flue gas that discharge in the power station simultaneously, make the CO in the flue gas
2With the injection droplet counter current contacting of mixed-alkali solution, sufficient chemical absorbing reaction occurs, generate stable Na
+, K
+, Ca
2+, Mg
2+Ionic species carbonate slurries;
3) to removing CO
2Flue gas make further purified treatment, remove the mixed-alkali droplets of substance of wherein carrying secretly, the gained clean flue gas enters atmosphere; Simultaneously, obtaining carbonate slurries are done further harmless treatment after, it is entered the sea;
4) respectively to obtaining H
2And Cl
2Carry out purification process, with H
2And Cl
2In the moisture content and the alkali lye that carry separate, and be back in the electrolyte solution;
5) respectively to the H after the dehydration
2And Cl
2Carry out cooling processing, make H
2And Cl
2Temperature be reduced to the zone that is suitable for synthetic reaction;
6) with the H after the cooling processing
2And Cl
2Import in the hydrogen chloride synthetic tower synchronously, make H
2And Cl
2Stable chemical combustion reaction occurs, and generates HCl gas;
7) injection technology water in the silicate reaction device adds the lime-ash that discharges in the power station simultaneously or/and the silicate mine stone flour stirs and makes the silicates material in the lime-ash or/and the silicate mine stone flour fully mixes with process water, is mixed with silicate solutions;
8) the HCl gas that generates is passed in the silicate solutions of preparing, it is fully contacted with aqueous silicate solution, violent chemical replacement reaction occurs, with the Na in the silicate
+, K
+, Ca
2+, Mg
2+The ion dissolving cements out, and obtains to contain hydrochloric acid salt soluble in water, a large amount of Cl
-Ion and solid-state SiO
2The hydrochloride slurries;
9) gained hydrochloride slurries are carried out concentration, with solid-state SiO wherein
2Concentrating and separating out will be overflowed simultaneously and contain Na
+, K
+, Ca
2+, Mg
2+And Cl
-The lysate of ion is transported to and again participates in circulation in the electrolyte solution.
2. solid fuel according to claim 1 power station discarded object comprehensive processing technique, it is characterized in that: in the described step 1), modified seawater be with the bittern water after natural sea-water, the desalinization or artificial sea water as solvent, with NaCl as solute formulated can electrolysis produce capacity H
2And Cl
2Seawater.
3. solid fuel according to claim 1 and 2 power station discarded object comprehensive processing technique is characterized in that: described step 2), the flue gas that discharge in the power station is passed in the carbon dioxide absorption tower after processing through pre-dedusting and desulfurization successively again.
4. solid fuel according to claim 1 and 2 power station discarded object comprehensive processing technique is characterized in that: in the described step 6), and H
2And Cl
2Mol ratio be 1.05 ~ 1.10: 1.
5. solid fuel according to claim 1 and 2 power station discarded object comprehensive processing technique, it is characterized in that: in the described step 8), HCl gas is passed in the gas distributor of silicate solutions bottom, its anti-blocking pore from gas distributor is sprayed downwards, form the HCl bubble that moves upward in a large number, and adopt agitator to stir, broken HCl bubble, prolong the time that the HCl bubble moves upward, thereby make the HCl bubble fully contact mixing with silicate solutions, and gas-liquid mixture stirs from a side direction opposite side through agitator and flows, until displacement reaction is complete.
6. solid fuel according to claim 1 and 2 power station discarded object comprehensive processing technique, it is characterized in that: in the described step 9), first gained hydrochloride slurries are carried out rotational flow separation, the supernatant that eddy flow overflows is transmitted back to sustainable participation circulation in the silicate solutions, the sediment that eddy flow produces carries out Vacuum Concentration again, isolates and contains Na
+, K
+, Ca
2+, Mg
2+And Cl
-The lysate of ion is transported to and again participates in circulation, the concentrated solid-state SiO that obtains in the electrolyte solution
2As building the road base or backfilling material, perhaps be processed into SiO
2Nano material.
7. solid fuel power station discarded object comprehensive treatment equipment, mainly formed by electrolysis unit (2), carbon dioxide absorption tower (5), hydrogen chloride synthetic tower (20), silicate reaction device (10), cyclone separator (14) and vacuum belt machine (13), it is characterized in that:
The cathodic hydrogen outlet of described electrolysis unit (2) links to each other with the hydrogen input of hydrogen cooler (22) with hydrogen chloride synthetic tower (20) by hydrogen gas segregator (21) successively, the anode chlorine outlet of described electrolysis unit (2) links to each other with the chlorine input of Chlorine Cooler (23) with hydrogen chloride synthetic tower (20) by chlorine separator (24) successively, and the liquid return hole of the liquid return hole of described hydrogen gas segregator (21) and chlorine separator (24) all reclaims mouth with the mixed alkali liquor of electrolysis unit (2) and links to each other;
The mixed alkali liquor output of described electrolysis unit (2) links to each other with the inner chamber of carbon dioxide absorption tower (5), the smoke inlet top, bottom of described carbon dioxide absorption tower (5) is provided with flue gas flow equalizing device (3), the exhanst gas outlet below, top of described carbon dioxide absorption tower (5) is provided with alkali liquor recovery device (7) and alkali lye spray equipment (6), and described alkali lye spray equipment (6) links to each other with the bottom slurry pool of carbon dioxide absorption tower (5) by NaOH solution circulating pump (8);
The hydrogen chloride output of described hydrogen chloride synthetic tower (20) links to each other with gas distributor (9) by air shooter (19), described gas distributor (9) is arranged on silicate reaction device (10) bottom one side, be furnished with a plurality of agitators (15) in the described silicate reaction device (10), the reaction paste outlet of described silicate reaction device (10) bottom opposite side links to each other with the input of cyclone separator (14), the sediment output of described cyclone separator (14) links to each other with the material inlet of vacuum belt machine (13), and the filtrate output of described vacuum belt machine (13) links to each other by additional mouthful of the mixed alkali liquor of liquid delivery tube (12) and electrolysis unit (2).
8. solid fuel according to claim 7 power station discarded object comprehensive treatment equipment, it is characterized in that: it also comprises silicate powder feed bin (17), and the bottom discharge mouth of described silicate powder feed bin (17) links to each other by the dog-house of discharging distributor (16) with silicate reaction device (10).
9. solid fuel according to claim 8 power station discarded object comprehensive treatment equipment, it is characterized in that: top one side of described silicate powder feed bin (17) is provided with small-sized sack cleaner (18).
10. it is characterized in that according to claim 7 or 8 or 9 described solid fuel power station discarded object comprehensive treatment equipments: the mixed alkali liquor output of described electrolysis unit (2) links to each other with the inner chamber of carbon dioxide absorption tower (5) by NaOH solution circulating pump (8), alkali lye spray equipment (6) successively.
11. according to claim 7 or 8 or 9 described solid fuel power station discarded object comprehensive treatment equipments, it is characterized in that: be positioned in described carbon dioxide absorption tower (5) inner chamber between alkali lye spray equipment (6) and the flue gas flow equalizing device (3) and be provided with CO
2Dry load layer (4).
12. according to claim 7 or 8 or 9 described solid fuel power station discarded object comprehensive treatment equipments, it is characterized in that: the water-cooled constant temperature synthetic tower that described hydrogen chloride synthetic tower (20) adopts quartz lamp head to ignite.
13. according to claim 7 or 8 or 9 described solid fuel power station discarded object comprehensive treatment equipments, it is characterized in that: described gas distributor (9) is made of pipeline or pipe network, is evenly equipped with the anti-blocking pore that Open Side Down on described pipeline or the pipe network.
14. according to claim 7 or 8 or 9 described solid fuel power station discarded object comprehensive treatment equipments, it is characterized in that: the orientation corresponding with its reaction paste outlet, described silicate reaction device (10) top is provided with tail gas drop retracting device (11).
15. according to claim 7 or 8 or 9 described solid fuel power station discarded object comprehensive treatment equipments, it is characterized in that: the supernatant output of described cyclone separator (14) links to each other with the fluid infusion mouth of silicate reaction device (10).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210591707.5A CN103055682B (en) | 2012-12-31 | 2012-12-31 | Solid fuel power station discarded object comprehensive processing technique and equipment thereof |
| PCT/CN2013/088605 WO2014101641A1 (en) | 2012-12-31 | 2013-12-05 | Comprehensive treatment process and apparatus for solid fuel power station waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210591707.5A CN103055682B (en) | 2012-12-31 | 2012-12-31 | Solid fuel power station discarded object comprehensive processing technique and equipment thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103055682A true CN103055682A (en) | 2013-04-24 |
| CN103055682B CN103055682B (en) | 2015-08-12 |
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|---|---|---|---|
| CN201210591707.5A Expired - Fee Related CN103055682B (en) | 2012-12-31 | 2012-12-31 | Solid fuel power station discarded object comprehensive processing technique and equipment thereof |
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| Country | Link |
|---|---|
| CN (1) | CN103055682B (en) |
| WO (1) | WO2014101641A1 (en) |
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| WO2014101641A1 (en) * | 2012-12-31 | 2014-07-03 | 武汉凯迪工程技术研究总院有限公司 | Comprehensive treatment process and apparatus for solid fuel power station waste |
| CN104261449A (en) * | 2014-09-22 | 2015-01-07 | 四川大学 | Method for producing high-purity carbonate by mineralizing CO2 from solution rich in calcium and magnesium |
| CN108787693A (en) * | 2017-05-02 | 2018-11-13 | 蒋本基 | alkaline solid waste modifying method |
| CN113333441A (en) * | 2021-06-23 | 2021-09-03 | 华中科技大学 | Fly ash treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112023021117A2 (en) * | 2021-04-14 | 2023-12-12 | Carbonfree Chemicals Holdings Llc | METHODS AND COMPOSITIONS FOR SECATORING CARBON DIOXIDE |
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| CN101896425A (en) * | 2008-12-11 | 2010-11-24 | 卡勒拉公司 | Processing CO2 utilizing a recirculating solution |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014101641A1 (en) * | 2012-12-31 | 2014-07-03 | 武汉凯迪工程技术研究总院有限公司 | Comprehensive treatment process and apparatus for solid fuel power station waste |
| CN104261449A (en) * | 2014-09-22 | 2015-01-07 | 四川大学 | Method for producing high-purity carbonate by mineralizing CO2 from solution rich in calcium and magnesium |
| CN104261449B (en) * | 2014-09-22 | 2016-01-27 | 四川大学 | Utilize the solution mineralising CO being rich in calcium and magnesium 2the method of high purity carbonate |
| CN108787693A (en) * | 2017-05-02 | 2018-11-13 | 蒋本基 | alkaline solid waste modifying method |
| CN113333441A (en) * | 2021-06-23 | 2021-09-03 | 华中科技大学 | Fly ash treatment system |
| CN113333441B (en) * | 2021-06-23 | 2022-05-24 | 华中科技大学 | A fly ash processing system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014101641A1 (en) | 2014-07-03 |
| CN103055682B (en) | 2015-08-12 |
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