CN103055682B - Solid fuel power station discarded object comprehensive processing technique and equipment thereof - Google Patents
Solid fuel power station discarded object comprehensive processing technique and equipment thereof Download PDFInfo
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- CN103055682B CN103055682B CN201210591707.5A CN201210591707A CN103055682B CN 103055682 B CN103055682 B CN 103055682B CN 201210591707 A CN201210591707 A CN 201210591707A CN 103055682 B CN103055682 B CN 103055682B
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- power station
- silicate
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000004449 solid propellant Substances 0.000 title claims abstract description 25
- 238000012545 processing Methods 0.000 title claims abstract description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 104
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 85
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000006243 chemical reaction Methods 0.000 claims abstract description 62
- 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 52
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 51
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 41
- 238000010521 absorption reaction Methods 0.000 claims abstract description 37
- 239000003546 flue gas Substances 0.000 claims abstract description 32
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000013535 sea water Substances 0.000 claims abstract description 26
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 24
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 23
- 235000013312 flour Nutrition 0.000 claims abstract description 12
- 239000004575 stone Substances 0.000 claims abstract description 12
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 8
- 150000002500 ions Chemical class 0.000 claims abstract description 8
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000006166 lysate Substances 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims abstract description 5
- 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
- 239000007789 gas Substances 0.000 claims description 43
- 239000002002 slurry Substances 0.000 claims description 18
- 239000007921 spray 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
- 230000008569 process Effects 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
- 239000007788 liquid Substances 0.000 claims description 12
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 11
- 229910052739 hydrogen Inorganic materials 0.000 claims description 11
- 238000011084 recovery Methods 0.000 claims description 11
- 239000001257 hydrogen Substances 0.000 claims description 10
- 239000010453 quartz Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 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
- 239000002585 base Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000006228 supernatant Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 239000013049 sediment Substances 0.000 claims description 6
- 150000004760 silicates Chemical class 0.000 claims description 6
- 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
- 238000013461 design 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
- 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
- 239000013589 supplement Substances 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000023556 desulfurization Effects 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
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 239000002956 ash Substances 0.000 abstract description 18
- 239000010881 fly ash Substances 0.000 abstract description 14
- 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
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000011575 calcium Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 7
- 239000010410 layer Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000010248 power generation Methods 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
- 230000002411 adverse Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000010883 coal ash Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000007613 environmental effect Effects 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
- 238000011160 research Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- -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
- 238000009825 accumulation Methods 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
- 239000012141 concentrate Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000013305 food Nutrition 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
- 238000004064 recycling Methods 0.000 description 1
- 230000009919 sequestration Effects 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
- 239000007787 solid 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
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
Landscapes
- 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 kind of solid fuel power station discarded object comprehensive processing technique and equipment thereof.This technique will containing Na
+, K
+, Ca
2+, Mg
2+the modified seawater electrolysis of metal ion generates alkaline matter and sour gas, utilizes the carbon dioxide in alkaline matter absorption power station discharge flue gas, is disposed to marine sealing up for safekeeping after harmless treatment; Utilize sour gas synthetic hydrochloric acid, and the silicate mine stone flour utilizing hydrochloric acid and power station to discharge flyash, biomass ash or cheapness carries out dissolving displacement reaction, will be wherein isolated containing Na
+, K
+, Ca
2+, Mg
2+, Cl
-the lysate of ion reclaims, and is returned in modified seawater and continues electrolysis; To wherein isolated SiO
2be used as the raw material of industry, thus form benign cycle power station discarded object being carried out to integrated treatment.Its equipment combines primarily of electrolysis unit, carbon dioxide absorption tower, hydrogen chloride synthesis tower, silicate reaction device, cyclone separator and vacuum belt machine, can realize power station waste ' s reclamation to greatest extent.
Description
Technical field
The present invention relates to the environmental protection technology in power station, refer to a kind of solid fuel power station discarded object comprehensive processing technique and equipment thereof particularly.
Background technology
At present, the raw material major part that solid fuel power station adopts 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 Thermal generation unit accounts for about 70% of whole generating set, and biomass power generation is relatively less.The hat in the waste coal ash that China's coal fired power generation discharges and the GHG carbon dioxide Yi Ju world, the biomass ash that biomass burning produces also is increasing year by year.Statistics are had to show: the total release of China's flyash is more than 3.75 hundred million tons, the annual discharge capacity of carbon dioxide is also more than 6,100,000,000 tons, and both discharge capacitys are also in continuous increase, cause global warming, climate change thus and the problem of environmental pollution of combined influence is produced to the aspect such as ecological, economic, social also day by day serious, force people finding the approach addressed these problems always.
For flyash or biomass ash, its Main Ingredients and Appearance is silicates, also containing metallicses such as a large amount of Na, K, Ca, Mg, China's building materials industry to its recycle few, current utilization rate is only about 30%, be mainly used for build the road base and backfill, annual still have more than 2.6 hundred million ton of flyash to fail to utilize, can only be stored in grey storehouse, not only occupy a large amount of industrial land and accumulating relevant equipment, and flyash per ton store build Ku Fei and running cost about needs 10 ~ 100 yuan, cumulative cost is surprising.Meanwhile, when flyash is used for building the road the operations such as base, also by a series of restriction of area, time, weather, use very unbalanced.Therefore, how utilizing flyash or reducing flyash storage is the important environmental objective that this area scientific research personnel faces.
For carbon dioxide, although it is the useful resources in multiple field such as industry, agricultural, food, health, medical treatment, but its application quantity is extremely small compared with discharge capacity, the greenhouse effects that excessive emissions is formed, play adverse influence to the living environment of the mankind.Nowadays control CO2 emission and become global problem, increasing national consciousness to the trapping of carbon dioxide and Plugging Technology Applied for the meaning slowing down climate warming.
Enter air to control carbon dioxide, this area scientific research personnel have devised various carbon dioxide sequestration technology, mainly contains following three kinds of modes: the first it is sealed in various geology interlayer in a gaseous form; The second is sealed in a gaseous form in deep-sea it; The third is sealed in solid form in carbonate it.Seal up for safekeeping in mode for three kinds, the first geological storage technology obtains certain application, but the change 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 deep-sea ecological environment, current rarely seen application.The third carbonate Plugging Technology Applied is also known as mineral Plugging Technology Applied, best to the fixed effect of carbon dioxide in theory, the carbon dioxide being transformed into salt can not be discharged into the atmosphere again, therefore obtain and pay close attention to widely, but it still rests on the experimental stage of stabilizing carbon dioxide at present, distance practical application is still far away.
Summary of the invention
Object 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 produces the raw material of absorbent etc. by electrolytic seawater or modified seawater, can by power station the carbon dioxide conversion discharged in flue gas to become carbonate to be fixedly sealed in marine greatly, the silicate mine stone flour of the lime-ash such as flyash, biomass ash and cheapness that simultaneously make full use of power station discharge has assisted the conversion cycles of carbon dioxide, realizes the comprehensive utilization of power station discarded object to greatest extent.
For achieving the above object, solid fuel power station discarded object comprehensive processing technique designed by the present invention, be to power station discharge the process that the carbon dioxide in flue gas and the silicates material in lime-ash carry out mutually utilizing, it is characterized in that: this technique comprises the steps:
1) using natural sea-water or be added with hydrochloric acid salt modified seawater as electrolyte solution, pass into dc source and electrolytic separation process carried out to it, obtain sour gas H respectively at the negative electrode of electrolysis unit and anode
2and Cl
2, make electrolyte solution become main component is NaOH, KOH, Ca (OH) simultaneously
2, Mg (OH)
2mixed-alkali solution;
2) gained mixed-alkali solution is sprayed in carbon dioxide absorption tower, in carbon dioxide absorption tower, pass into the flue gas discharged in power station simultaneously, make the CO in flue gas
2with the injection droplet counter current contacting of mixed-alkali solution, there is the reaction of sufficient chemical absorbing, generate stable Na
+, K
+, Ca
2+, Mg
2+ionic species carbonate slurry;
3) to removing CO
2flue gas make further purified treatment, remove the mixed-alkali droplets of substance of wherein carrying secretly, gained clean flue gas enters air; Meanwhile, after further harmless treatment is done to obtained carbonate slurry, sea is entered;
4) respectively to obtained H
2and Cl
2carry out purification process, by H
2and Cl
2in the moisture content that carries and alkali lye separate, and be back in electrolyte solution;
5) respectively to the H after dehydration
2and Cl
2carry out cooling processing, make H
2and Cl
2temperature be reduced to the region being suitable for synthetic reaction;
6) by the H after cooling processing
2and Cl
2in synchronous importing hydrogen chloride synthesis tower, make H
2and Cl
2there is stable chemical combustion reaction, generate HCl gas;
7) to injection technology water in silicate reaction device, add the lime-ash that discharges in power station or/and silicate mine stone flour simultaneously, stir and make silicates material in lime-ash or/and silicate mine stone flour fully mixes with process water, be mixed with silicate solutions;
8) generated HCl gas is passed in prepared silicate solutions, makes it fully contact with aqueous silicate solution, violent chemical replacement reaction occurs, by the Na in silicate
+, K
+, Ca
2+, Mg
2+ion-solubility cements out, and obtains containing hydrochloric acid salt soluble in water, a large amount of Cl
-ion and solid-state SiO
2hydrochloride slurries;
9) concentration is carried out to gained hydrochloride slurries, by solid-state SiO wherein
2spilling out, is contained Na by concentrating and separating simultaneously
+, K
+, Ca
2+, Mg
2+and Cl
-the lysate of ion is transported in electrolyte solution and again participates in circulation.
Further, in described step 1), modified seawater is using the bittern water after natural sea-water, desalinization or artificial sea water as solvent, using NaCl as solute formulated electrolysis can produce enough 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 desalinization, metal ion is wherein 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 power station is discharged successively after pre-dedusting and desulfurization process, then is passed in carbon dioxide absorption tower.Flue gas is more conducive to mixed-alkali solution and absorbs 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 selective sweetening process, sulfide can be avoided to be dissolved in mixed-alkali solution affects CO
2absorption, thus fixation of C O to greatest extent
2.
Further, in described step 6), regulable control H
2and Cl
2mol ratio be 1.05 ~ 1.10: 1.Like this, the Cl of toxic side effect can be guaranteed
2complete reaction, avoids Cl
2leakage the personnel that cause injure.
Further, in described step 8), HCl gas is passed in the gas distributor bottom silicate solutions, make it spray from the anti-blocking pore of gas distributor downwards, form the HCl bubble moved upward in a large number, and adopt agitator stirring, broken HCl bubble, extend the time that HCl bubble moves upward, thus make HCl bubble fully contact mixing with silicate solutions, and gas-liquid mixture flows from side to opposite side, until displacement reaction is complete through agitator stirring.Like this, HCl gas can be made full use of, by silicate solutions Na
+, K
+, Ca
2+, Mg
2+ion-solubility cements out.
Further, in described step 9), first carry out cyclonic separation to gained hydrochloride slurries, the supernatant that eddy flow overflows is transmitted back in silicate solutions and continues to participate in circulation, and the sediment that eddy flow produces carries out Vacuum Concentration again, isolates containing Na
+, K
+, Ca
2+, Mg
2+and Cl
-the lysate of ion is transported in electrolyte solution and again participates in circulation, the concentrated solid-state SiO obtained
2as base or the backfilling material of building the road, or be processed into SiO
2nano material.Like this, point two-stage carries out concentration to hydrochloride slurries, can add in electrolyte solution by alkaline metal ions solution as much as possible, conservation cost, and form optimum reaction cycle; Meanwhile, the SiO that goes out of concentrating and separating
2purity is higher, quality is better, purposes is wider.
Equally, for achieving the above object, solid fuel power station discarded object comprehensive treatment equipment designed by the present invention, primarily of electrolysis unit, carbon dioxide absorption tower, hydrogen chloride synthesis tower, silicate reaction device, cyclone separator and vacuum belt machine composition, its special character is:
The cathode hydrogen outlet of described electrolysis unit is connected with the hydrogen input of hydrogen chloride synthesis tower with hydrogen cooler by hydrogen gas segregator successively, the anode chlorine outlet of described electrolysis unit is connected with the chlorine input of hydrogen chloride synthesis tower with Chlorine Cooler by chlorine separator successively, and the liquid return hole of described hydrogen gas segregator is all connected with the mixed alkali liquor recovery port of electrolysis unit with the liquid return hole of chlorine separator.
The mixed alkali liquor output of described electrolysis unit is connected with the inner chamber of carbon dioxide absorption tower, flue gas flow equalizing device is provided with above the bottom smoke inlet of described carbon dioxide absorption tower, be provided with alkali liquor recovery device and alkali lye spray equipment below the top exhanst gas outlet of described carbon dioxide absorption tower, described alkali lye spray equipment is connected with the bottom slurry pond of carbon dioxide absorption tower by NaOH solution circulating pump.
The hydrogen chloride output of described hydrogen chloride synthesis tower is connected with gas distributor by air shooter, described gas distributor is arranged on side bottom silicate reaction device, multiple agitator is furnished with in described silicate reaction device, bottom described silicate reaction device, the reaction paste outlet of opposite side is connected with the input of cyclone separator, the sediment output of described cyclone separator is connected with the material inlet of vacuum belt machine, and the filtrate output of described vacuum belt machine supplements mouth by liquid delivery tube with the mixed alkali liquor of electrolysis unit and is connected.
Preferably, it also comprises silicate powder feed bin, and the bottom discharge mouth of described silicate powder feed bin is connected with the dog-house of silicate reaction device by discharging distributor.Silicate powder feed bin is for storing lime-ash or the finished silicon acid salt ore powder such as flyash, biomass ash of power station discharge, discharging distributor enters the amount of silicate reaction device for the whereabouts controlling lime-ash or silicate mine stone flour, it mixes rapidly under the effect of agitator with process water, then participates in reaction.
Further, the side, top of described silicate powder feed bin is provided with small-sized sack cleaner.In order to reclaim the dust that silicate powder feed bin inside is flown upward.
Again further, the mixed alkali liquor output of described electrolysis unit is connected with the inner chamber of carbon dioxide absorption tower by NaOH solution circulating pump, alkali lye spray equipment successively.Like this, mixed alkali liquor is directly sprayed in carbon dioxide absorption tower by alkali lye spray equipment, can be omitted on carbon dioxide absorption tower and arrange the equipment such as absorbent entrance, associated conduit and delivery pump, and simplified apparatus forms, and saves equipment investment cost.
Again further, between alkali lye spray equipment and flue gas flow equalizing device, CO is provided with in described carbon dioxide absorption tower inner chamber
2dry load layer.Like this, the time that mixed-alkali solution contacts with flue gas adverse current can be extended, impel the carbon dioxide in flue gas and mixed-alkali solution fully to react, improve the absorptivity of carbon dioxide.
Further, described hydrogen chloride synthesis tower adopts the water-cooled constant temperature synthetic tower that quartz lamp head ignites.It ensures temperature constant in synthetic tower by cooling water, Cl
2walk the internal layer of quartz lamp head, H
2walk the skin of quartz lamp head, the two is at quartz lamp head harmonious combustion, and the HCl gas of synthesis upwards flows, and discharges after cooling from top, enters next step reaction.This save labyrinth and the technique of industrial salt manufacturing acid.
Further, described gas distributor is made up of pipeline or pipe network, and described pipeline or pipe network are evenly equipped with the anti-blocking pore that Open Side Down.Such design, can make that HCl gas is constantly downward to be overflowed from anti-blocking pore, form a large amount of HCl bubble, then move upward, stir through agitator, further obstruction HCl bubble moves upward, and extends the time moved upward, and HCl bubble is broken and becomes little gradually 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 reaction acceleration.
Again further, described silicate reaction device top and its reaction paste export corresponding orientation and are provided with tail gas drop retracting device.Like this, the minute quantity H remained can be made
2entrained hydrochloride plasmoid humor is effectively reclaimed, and guarantees that tail gas obtains harmless emission.
Again further, the supernatant output of described cyclone separator is connected with the fluid infusion mouth of silicate reaction device.Like this, the preparation that supernatant participates in silicate solutions can be made full use of, save process water, form good reaction cycle.
The present invention will containing Na
+, K
+, Ca
2+, Mg
2+the modified seawater electrolysis of metal ion generates alkaline matter and sour gas, utilizes the carbon dioxide in alkaline matter absorption power station discharge flue gas, is disposed to marine sealing up for safekeeping after harmless treatment; Utilize sour gas synthetic hydrochloric acid, and the silicate mine stone flour of the flyash, biomass ash or the cheapness that utilize hydrochloric acid and power station to discharge carries out dissolving displacement reaction, will be wherein isolated containing Na
+, K
+, Ca
2+, Mg
2+, Cl
-after the solution recovery of ion, be returned in modified seawater and continue electrolysis; To wherein isolated SiO
2utilized further as the raw material of industry, thus formed benign cycle power station discarded object being carried out to integrated treatment.Its advantage is mainly reflected in following several respects:
One, the present invention utilizes extremely cheap modified seawater electrolysis to produce H
2and Cl
2make modified turn seawater become mixed-alkali solution simultaneously, adopt the carbon dioxide in this mixed-alkali solution absorption solid fuel power station discharge flue gas, can be fixed in carbonate, and be sealed in marine greatly steadily in the long term, what the carbon dioxide long term accumulation solving mankind's activity generation caused global climate has a strong impact on.
Its two, modified seawater electrolysis is produced H by the present invention
2and Cl
2synthesize HCl gas, be more directly passed into by HCl gas by flyash, biomass ash and/or silicate mine stone flour and the formulated silicate solutions of process water, HCl gas is met water and is formed hydrochloric acid, by the Na in silicate
+, K
+, Ca
2+, Mg
2+metal ion dissolves and cements out, in company with free Cl
-ion adds in modified seawater together, continues electrolysis and produces H
2and Cl
2, both achieved the benign cycle of carbon dioxide absorption reaction, achieved Cl again
-recycling of ion, decreases the interpolation of the hydrochloric acid salts such as NaCl, and material loss is minimum.
They are three years old, the biomass ash that the present invention takes full advantage of flyash that coal fired power plant produces, biomass power plant produces is as the substitute of silicate mine stone flour, effectively reduce the loss of natural material, make the discarded lime-ash in power station obtain good improvement simultaneously, significantly reduce the storage maintenance cost of these lime-ash.
They are four years old, the present invention is by the carbon dioxide absorption storage in flue gas in the seawater ubiquitous carbonate, render to and marinely greatly can not produce Ocean acidification phenomenon, and be useful and harmless to ocean disposal Calcium carbonate material to shellfish biology, efficiently solve simple deep ocean storage CO like this
2to the negative effect that ocean produces.
Its five, the synthesis of HCl gas preferred water-cooled constant temperature synthetic tower in present device.Ensure that in tower, temperature is constant all the time by interlayer cooling water, and then ensure H
2and Cl
2harmonious combustion, and by HCl gas, reaction generation heat is taken away.Like this, labyrinth and the technique of industrial salt manufacturing acid is eliminated.
They are six years old, by arranging the anti-blocking pore that Open Side Down on gas distributor in present device, can be completely uniform and be dissolved in silicate solutions by HCl gas, the heat that the heat simultaneously carried by HCl gas by a series of stirring and dissolving is produced rapidly and silicate solutions exchange, thus impel its complete reaction, improve the displacement efficiency of metal ion.
Its seven, be all provided with drop retracting device at the exhaust emissions place of the exhaust emissions of carbon dioxide absorption tower, silicate reaction device in present device, thus tail gas hazard-free discharged, very friendly to environment.
They are eight, the silicate lysate SiO that in present invention process, concentrating and separating goes out years old
2be the good raw material of industry, can be directly used, be mainly used in build the road base and backfill, also can carry out degree of depth chemical industry and be treated to SiO
2nano material.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of solid fuel power station discarded object comprehensive treatment equipment.
Detailed description of the invention
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 figure, primarily of parts compositions such as transformation and fairing 1, electrolysis unit 2, carbon dioxide absorption tower 5, hydrogen chloride synthesis 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 is connected with the power interface of electrolysis unit 2.The cathode hydrogen outlet of electrolysis unit 2 is connected with the hydrogen input of hydrogen chloride synthesis tower 20 with hydrogen cooler 22 by hydrogen gas segregator 21 successively, the anode chlorine outlet of electrolysis unit 2 is connected with the chlorine input of hydrogen chloride synthesis tower 20 with Chlorine Cooler 23 by chlorine separator 24 successively, and the liquid return hole of hydrogen gas segregator 21 is all connected with the mixed alkali liquor recovery port of electrolysis unit 2 with the liquid return hole of chlorine separator 24.
Carbon dioxide absorption tower 5 adopts the absorption tower of spray structure, flue gas flow equalizing device 3 is provided with above the smoke inlet of its underpart, alkali liquor recovery device 7 is provided with below its top exhanst gas outlet, be provided with alkali lye spray equipment 6 below alkali liquor recovery device 7, between alkali lye spray equipment 6 and flue gas flow equalizing device 3, be provided with CO
2dry load layer 4, alkali lye spray equipment 6 is connected with the bottom slurry pond of carbon dioxide absorption tower 5 by NaOH solution circulating pump 8.The mixed alkali liquor output of electrolysis unit 2 is connected 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 synthesis tower 20 adopts quartz lamp head to ignite, its hydrogen chloride output is connected with gas distributor 9 by air shooter 19.Gas distributor 9 is arranged on side bottom silicate reaction device 10, and it is made up of pipeline or pipe network, and pipeline or pipe network are evenly equipped with the anti-blocking pore (not shown) that Open Side Down.Bottom silicate reaction device 10, the reaction paste outlet of opposite side is connected with the input of cyclone separator 14, and silicate reaction device 10 top and its reaction paste export corresponding orientation and be provided with tail gas drop retracting device 11.From side to opposite side, be furnished with several agitators 15 successively in silicate reaction device 10, in the present embodiment, be furnished with four.
Silicate powder feed bin 17 is arranged in above silicate reaction device 10, corresponding with the position of gas distributor 9.The bottom discharge mouth of silicate powder feed bin 17 is connected with the dog-house of silicate reaction device 10 by discharging distributor 16.The side, top of silicate powder feed bin 17 is provided with small-sized sack cleaner 18.
The supernatant output of cyclone separator 14 is connected with the fluid infusion mouth of silicate reaction device 10.The sediment output of cyclone separator 14 is connected with the material inlet of vacuum belt machine 13, and the filtrate output of vacuum belt machine 13 supplements mouth by liquid delivery tube 12 with the mixed alkali liquor of electrolysis unit 2 and is connected.
The technological process of above-mentioned solid fuel power station discarded object comprehensive treatment equipment is as follows:
1) add NaCl in the bittern water after natural sea-water, desalinization or artificial sea water, be mixed with and electrolysis can produce enough H
2and Cl
2modified seawater, and using its electrolyte solution as electrolysis unit 2.Power station high-tension electricity, after transformation and fairing 1 are processed into required direct current, is energized to electrolysis unit 2.Now, sour gas H is produced respectively at the negative electrode of electrolysis unit 2 and anode
2and Cl
2, make electrolyte solution become main component is NaOH, KOH, Ca (OH) simultaneously
2, Mg (OH)
2mixed-alkali solution.
2) the mixed-alkali solution in electrolysis unit 2 by NaOH solution circulating pump 8, alkali lye spray equipment 6, sprays into wherein from carbon dioxide absorption tower 5 top successively.Meanwhile, the flue gas that power station is discharged, after pre-dedusting and desulfurization process, enters from carbon dioxide absorption tower 5 bottom.After the uniform air-flow of flue gas flow equalizing device 3, flue gas upwards flows, with the alkaline droplet sprayed downwards at CO
2counter current contacting in dry load layer 4, alkaline droplet slowly declines under the retardation of updraft, the CO in flue gas
2fully react with it and absorbed.NaOH solution circulating pump 8 can guarantee the alkaline droplet and the CO that have neither part nor lot in reaction further
2counter current contacting repeatedly, thus ensure that alkali lye droplet absorbs fixation of C O completely
2, generate stable Na
+, K
+, Ca
2+, Mg
2+ionic species carbonate slurry.
3) CO is stripped of
2flue gas through alkali liquor recovery device 7, by wherein carry secretly mixed-alkali drop interception reclaim, gained clean flue gas enters air from the top exhanst gas outlet of carbon dioxide absorption tower 5.And absorb CO
2the stable carbonate slurry of rear formation, after further harmless treatment, is entered sea, reaches fixing and stores CO
2object.
4) H that produces of electrolysis unit 2
2and Cl
2purification process is carried out, by H respectively through hydrogen gas segregator 21 and chlorine separator 24
2and Cl
2in the moisture content that carries and alkali lye separate, and to turn back to electrolyte solution from the mixed alkali liquor recovery port of electrolysis unit 2.
5) H after dehydration
2and Cl
2carry out cooling processing respectively through hydrogen cooler 22 and Chlorine Cooler 23 again, make H
2and Cl
2temperature be reduced to the region being suitable for synthetic reaction.
6) cooled H
2and Cl
2the quartz lamp head synchronously being entered into hydrogen chloride synthesis 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 reaction
2walk quartz lamp head internal layer, H
2walk quartz lamp head skin, the two burns at quartz lamp head, and the HCl gas of synthesis upwards flows, after the cooling system cooling of hydrogen chloride synthesis tower 20 self, from hydrogen chloride synthesis tower 20 Base top contact.
7) power station waste coal ash, biomass ash is stored in advance in silicate powder feed bin 17, or silicate mine stone flour, also can be their mixture.Press design quantity by discharging distributor 16, they are delivered continuously in silicate reaction device 10.Meanwhile, in silicate reaction device 10, inject the process water of design flow, make silicates material in flyash, biomass ash or/and 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 side, silicate powder feed bin 17 top can fly upward in recovery bin in time.
8) HCl gas enters into gas distributor 9 bottom silicate reaction device 10 by air shooter 19, and sprayed downwards by the anti-blocking pore on it, a large amount of HCl bubbles is formed in silicate solutions, HCl bubble moves upward subsequently, stirring through agitator 15 hinders HCl bubble up, extend run duration upwards, and make HCl bubble breaking, diameter becomes little gradually, the HCl minute bubbles of heat fully can contact with silicate solutions, and HCl bubble is very easily soluble in water, thus there is violent heat exchange, impel reaction acceleration.Meanwhile, gas-fluid two-phase mixture stirs through agitator 15 and flows to opposite side from side, violent chemical replacement reaction occurs, by the Na in silicate
+, K
+, Ca
2+, Mg
2+ion-solubility cements out, and obtains containing hydrochloric acid salt soluble in water, a large amount of Cl
-ion and solid-state SiO
2hydrochloride slurries.Wherein, the H of residual minute quantity
2after the process of tail gas drop retracting device 11, harmless emission.
9) the hydrochloride slurries of discharging from reaction paste outlet bottom silicate reaction device 10 enter cyclone separator 14, and the supernatant that eddy flow overflows returns wherein from the fluid infusion mouth of silicate reaction device 10, continue to participate in circulation.The sediment of eddy flow generation moisture content about about 50% enters in vacuum belt machine 13 and concentrates, isolates containing Na
+, K
+, Ca
2+, Mg
2+and Cl
-the lysate of ion, supplements mouth by liquid delivery tube 12 from the mixed alkali liquor of electrolysis unit 2 and turns back to electrolyte solution, again participates in circulation.The solid-state SiO that Vacuum Concentration obtains
2as base or the backfilling material of building the road, or be processed into the SiO of high-quality exquisiteness
2nano material.
Claims (13)
1. a solid fuel power station discarded object comprehensive processing technique, it be to power station discharge the process that the carbon dioxide in flue gas and the silicates material in lime-ash carry out mutually utilizing, it is characterized in that: this technique comprises the steps:
1) using natural sea-water or be added with hydrochloric acid salt modified seawater as electrolyte solution, pass into dc source and electrolytic separation process carried out to it, obtain sour gas H respectively at the negative electrode of electrolysis unit and anode
2and Cl
2, make electrolyte solution become main component is NaOH, KOH, Ca (OH) simultaneously
2, Mg (OH)
2mixed-alkali solution;
2) gained mixed-alkali solution is sprayed in carbon dioxide absorption tower, in carbon dioxide absorption tower, pass into the flue gas passing through pre-dedusting and desulfurization process successively discharged in power station simultaneously, make the CO in flue gas
2with the injection droplet counter current contacting of mixed-alkali solution, there is the reaction of sufficient chemical absorbing, generate stable Na
+, K
+, Ca
2+, Mg
2+ionic species carbonate slurry;
3) to removing CO
2flue gas make further purified treatment, remove the mixed-alkali droplets of substance of wherein carrying secretly, gained clean flue gas enters air; Meanwhile, after further harmless treatment is done to obtained carbonate slurry, sea is entered;
4) respectively to obtained H
2and Cl
2carry out purification process, by H
2and Cl
2in the moisture content that carries and alkali lye separate, and be back in electrolyte solution;
5) respectively to the H after dehydration
2and Cl
2carry out cooling processing, make H
2and Cl
2temperature be reduced to the region being suitable for synthetic reaction;
6) by the H after cooling processing
2and Cl
2in synchronous importing hydrogen chloride synthesis tower, make H
2and Cl
2there is stable chemical combustion reaction, generate HCl gas;
7) to injection technology water in silicate reaction device, add the lime-ash that discharges in power station or/and silicate mine stone flour simultaneously, stir and make silicates material in lime-ash or/and silicate mine stone flour fully mixes with process water, be mixed with silicate solutions;
8) generated HCl gas is passed in prepared silicate solutions, makes it fully contact with aqueous silicate solution, violent chemical replacement reaction occurs, by the Na in silicate
+, K
+, Ca
2+, Mg
2+ion-solubility cements out, and obtains containing hydrochloric acid salt soluble in water, a large amount of Cl
-ion and solid-state SiO
2hydrochloride slurries;
9) concentration is carried out to gained hydrochloride slurries, by solid-state SiO wherein
2spilling out, is contained Na by concentrating and separating simultaneously
+, K
+, Ca
2+, Mg
2+and Cl
-the lysate of ion is transported in electrolyte solution and again participates in circulation.
2. solid fuel power station according to claim 1 discarded object comprehensive processing technique, it is characterized in that: described step 1) in, modified seawater is using the bittern water after natural sea-water, desalinization or artificial sea water as solvent, using NaCl as solute formulated electrolysis can produce enough H
2and Cl
2seawater.
3. solid fuel power station according to claim 1 and 2 discarded object comprehensive processing technique, is characterized in that: described step 6) in, H
2and Cl
2mol ratio be 1.05 ~ 1.10: 1.
4. solid fuel power station according to claim 1 and 2 discarded object comprehensive processing technique, it is characterized in that: described step 8) in, HCl gas is passed in the gas distributor bottom silicate solutions, it is made to spray from the anti-blocking pore of gas distributor downwards, form the HCl bubble moved upward in a large number, and adopt agitator to stir, broken HCl bubble, extend the time that HCl bubble moves upward, thus make HCl bubble fully contact mixing with silicate solutions, and gas-liquid mixture flows to opposite side from side through agitator stirring, until displacement reaction is complete.
5. solid fuel power station according to claim 1 and 2 discarded object comprehensive processing technique, it is characterized in that: described step 9) in, first cyclonic separation is carried out to gained hydrochloride slurries, the supernatant that eddy flow overflows is transmitted back in silicate solutions and continues to participate in circulation, the sediment that eddy flow produces carries out Vacuum Concentration again, isolates containing Na
+, K
+, Ca
2+, Mg
2+and Cl
-the lysate of ion is transported in electrolyte solution and again participates in circulation, the concentrated solid-state SiO obtained
2as base or the backfilling material of building the road, or be processed into SiO
2nano material.
6. one kind for realizing the solid fuel power station discarded object comprehensive treatment equipment that technique described in claim 1 designs, primarily of electrolysis unit (2), carbon dioxide absorption tower (5), hydrogen chloride synthesis tower (20), silicate reaction device (10), cyclone separator (14) and vacuum belt machine (13) composition, it is characterized in that:
The cathode hydrogen outlet of described electrolysis unit (2) is connected with the hydrogen input of hydrogen cooler (22) with hydrogen chloride synthesis tower (20) by hydrogen gas segregator (21) successively, the anode chlorine outlet of described electrolysis unit (2) is connected with the chlorine input of Chlorine Cooler (23) with hydrogen chloride synthesis tower (20) by chlorine separator (24) successively, and the liquid return hole of described hydrogen gas segregator (21) is all connected with the mixed alkali liquor recovery port of electrolysis unit (2) with the liquid return hole of chlorine separator (24);
The mixed alkali liquor output of described electrolysis unit (2) is connected with the inner chamber of carbon dioxide absorption tower (5), flue gas flow equalizing device (3) is provided with above the bottom smoke inlet of described carbon dioxide absorption tower (5), be provided with alkali liquor recovery device (7) and alkali lye spray equipment (6) below the top exhanst gas outlet of described carbon dioxide absorption tower (5), described alkali lye spray equipment (6) is connected by the bottom slurry pond of NaOH solution circulating pump (8) with carbon dioxide absorption tower (5);
The hydrogen chloride output of described hydrogen chloride synthesis tower (20) is connected with gas distributor (9) by air shooter (19), described gas distributor (9) is arranged on side, silicate reaction device (10) bottom, multiple agitator (15) is furnished with in described silicate reaction device (10), the reaction paste outlet of described silicate reaction device (10) bottom opposite side is connected with the input of cyclone separator (14), the sediment output of described cyclone separator (14) is connected with the material inlet of vacuum belt machine (13), the filtrate output of described vacuum belt machine (13) supplements mouth by liquid delivery tube (12) with the mixed alkali liquor of electrolysis unit (2) and is connected,
It also comprises silicate powder feed bin (17), and the bottom discharge mouth of described silicate powder feed bin (17) is connected with the dog-house of silicate reaction device (10) by discharging distributor (16).
7. solid fuel power station according to claim 6 discarded object comprehensive treatment equipment, is characterized in that: the side, top of described silicate powder feed bin (17) is provided with small-sized sack cleaner (18).
8. the solid fuel power station discarded object comprehensive treatment equipment according to claim 6 or 7, is characterized in that: the mixed alkali liquor output of described electrolysis unit (2) is connected with the inner chamber of carbon dioxide absorption tower (5) by NaOH solution circulating pump (8), alkali lye spray equipment (6) successively.
9. the solid fuel power station discarded object comprehensive treatment equipment according to claim 6 or 7, is characterized in that: be positioned in described carbon dioxide absorption tower (5) inner chamber between alkali lye spray equipment (6) and flue gas flow equalizing device (3) and be provided with CO
2dry load layer (4).
10. the solid fuel power station discarded object comprehensive treatment equipment according to claim 6 or 7, is characterized in that: the water-cooled constant temperature synthetic tower that described hydrogen chloride synthesis tower (20) adopts quartz lamp head to ignite.
11. solid fuel power station discarded object comprehensive treatment equipments according to claim 6 or 7, is characterized in that: described gas distributor (9) is made up of pipeline or pipe network, described pipeline or pipe network are evenly equipped with the anti-blocking pore that Open Side Down.
12. solid fuel power station discarded object comprehensive treatment equipments according to claim 6 or 7, is characterized in that: described silicate reaction device (10) top exports corresponding orientation with its reaction paste and is provided with tail gas drop retracting device (11).
13. solid fuel power station discarded object comprehensive treatment equipments according to claim 6 or 7, is characterized in that: the supernatant output of described cyclone separator (14) is connected 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 |
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| Publication Number | Publication Date |
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| CN103055682A CN103055682A (en) | 2013-04-24 |
| CN103055682B true 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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| CN (1) | CN103055682B (en) |
| WO (1) | WO2014101641A1 (en) |
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| CN103055682B (en) * | 2012-12-31 | 2015-08-12 | 武汉凯迪工程技术研究总院有限公司 | Solid fuel power station discarded object comprehensive processing technique and equipment thereof |
| 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 | Alkali solid waste method for modifying |
| AU2022258966A1 (en) * | 2021-04-14 | 2023-11-09 | Carbonfree Chemicals Holdings, Llc | Methods and compositions for the sequestration of carbon dioxide |
| CN113333441B (en) * | 2021-06-23 | 2022-05-24 | 华中科技大学 | Fly ash treatment system |
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| CN1165110A (en) * | 1997-06-19 | 1997-11-19 | 刘建昆 | Method and equipment for preparing reagent grade hydrochloric acid |
| JP2006137620A (en) * | 2004-11-10 | 2006-06-01 | Toshiba Corp | Collection system for carbon dioxide in waste gas, and its collection method |
| CA2930096A1 (en) * | 2007-09-20 | 2009-03-26 | Skyonic Corporation | Removing carbon dioxide from waste streams through co-generation of carbonate and/or bicarbonate minerals |
| CN101234318A (en) * | 2007-11-09 | 2008-08-06 | 中国石化仪征化纤股份有限公司 | Bubble tower reactor with 'gas-liquid' dispersion mixing device |
| AU2007101174A4 (en) * | 2007-12-10 | 2008-01-31 | Green, Kenneth Mr | Improved method of capturing carbon dioxide and converting to carbonate anions and then combining with calcium cations to form calcium carbonate |
| CN101993087A (en) * | 2010-11-29 | 2011-03-30 | 中煤平朔煤业有限责任公司 | Method for preparing water glass by using fly ash |
| CN102764580B (en) * | 2012-07-18 | 2015-08-26 | 浙江天蓝环保技术股份有限公司 | A kind of apparatus and method of white clay/carbide slag-gypsum wet flue gas desulfurizing |
| CN103055682B (en) * | 2012-12-31 | 2015-08-12 | 武汉凯迪工程技术研究总院有限公司 | Solid fuel power station discarded object comprehensive processing technique and equipment thereof |
| CN203002205U (en) * | 2012-12-31 | 2013-06-19 | 武汉凯迪工程技术研究总院有限公司 | Waste comprehensive treatment system of solid fuel power station |
-
2012
- 2012-12-31 CN CN201210591707.5A patent/CN103055682B/en not_active Expired - Fee Related
-
2013
- 2013-12-05 WO PCT/CN2013/088605 patent/WO2014101641A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101773766A (en) * | 2008-11-21 | 2010-07-14 | 林健峰 | Method for trapping carbon dioxide |
| CN101896425A (en) * | 2008-12-11 | 2010-11-24 | 卡勒拉公司 | Processing CO2 utilizing a recirculating solution |
| CN102010089A (en) * | 2009-09-07 | 2011-04-13 | 株式会社东芝 | Desalination system |
| CN102762277A (en) * | 2009-12-18 | 2012-10-31 | 斯凯约尼克公司 | Carbon dioxide sequestration through formation of group-2 carbonates and silicon dioxide |
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|---|---|
| CN103055682A (en) | 2013-04-24 |
| WO2014101641A1 (en) | 2014-07-03 |
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