CN108926911A - A kind of preparation method of denitration demercuration monoblock type filtrate - Google Patents
A kind of preparation method of denitration demercuration monoblock type filtrate Download PDFInfo
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- CN108926911A CN108926911A CN201810666836.3A CN201810666836A CN108926911A CN 108926911 A CN108926911 A CN 108926911A CN 201810666836 A CN201810666836 A CN 201810666836A CN 108926911 A CN108926911 A CN 108926911A
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- China
- Prior art keywords
- salt
- monoblock type
- denitration demercuration
- preparation
- filtrate
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Links
- 239000000706 filtrate Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 35
- 239000000835 fiber Substances 0.000 claims abstract description 27
- 239000003054 catalyst Substances 0.000 claims abstract description 20
- 150000003839 salts Chemical class 0.000 claims abstract description 9
- 238000011065 in-situ storage Methods 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000008367 deionised water Substances 0.000 claims description 14
- 229910021641 deionized water Inorganic materials 0.000 claims description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 229910002651 NO3 Inorganic materials 0.000 claims description 7
- -1 iron-chromium-aluminum Chemical compound 0.000 claims description 7
- 239000000047 product Substances 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000000356 contaminant Substances 0.000 claims description 6
- 235000019441 ethanol Nutrition 0.000 claims description 6
- 239000012266 salt solution Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 230000008021 deposition Effects 0.000 claims description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical group [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 4
- 239000001099 ammonium carbonate Substances 0.000 claims description 4
- 239000000908 ammonium hydroxide Substances 0.000 claims description 4
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 claims description 2
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 159000000013 aluminium salts Chemical class 0.000 claims description 2
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 2
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 2
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- 235000013877 carbamide Nutrition 0.000 claims description 2
- 150000001868 cobalt Chemical class 0.000 claims description 2
- 239000012634 fragment Substances 0.000 claims description 2
- 239000004312 hexamethylene tetramine Substances 0.000 claims description 2
- 235000010299 hexamethylene tetramine Nutrition 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000011068 loading method Methods 0.000 claims description 2
- 150000002696 manganese Chemical class 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 2
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims 1
- 150000000703 Cerium Chemical class 0.000 claims 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims 1
- 159000000003 magnesium salts Chemical class 0.000 claims 1
- 150000002815 nickel Chemical class 0.000 claims 1
- 150000003751 zinc Chemical class 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 10
- 239000000428 dust Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 238000006555 catalytic reaction Methods 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 230000002411 adverse Effects 0.000 abstract 1
- 239000010881 fly ash Substances 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 238000003837 high-temperature calcination Methods 0.000 abstract 1
- 239000002243 precursor Substances 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 10
- 239000011572 manganese Substances 0.000 description 9
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 8
- 239000000725 suspension Substances 0.000 description 8
- 229910052753 mercury Inorganic materials 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- 229960004756 ethanol Drugs 0.000 description 5
- 238000001354 calcination Methods 0.000 description 4
- 229960000935 dehydrated alcohol Drugs 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000002905 metal composite material Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910000608 Fe(NO3)3.9H2O Inorganic materials 0.000 description 1
- 229910021380 Manganese Chloride Inorganic materials 0.000 description 1
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 description 1
- WAEMQWOKJMHJLA-UHFFFAOYSA-N Manganese(2+) Chemical compound [Mn+2] WAEMQWOKJMHJLA-UHFFFAOYSA-N 0.000 description 1
- 229920000914 Metallic fiber Chemical group 0.000 description 1
- 229910016978 MnOx Inorganic materials 0.000 description 1
- 206010035745 Pneumonitis chemical Diseases 0.000 description 1
- 201000010001 Silicosis Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- WJEIYVAPNMUNIU-UHFFFAOYSA-N [Na].OC(O)=O Chemical compound [Na].OC(O)=O WJEIYVAPNMUNIU-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 229940011182 cobalt acetate Drugs 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 1
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 1
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 1
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 1
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 229940071125 manganese acetate Drugs 0.000 description 1
- 239000011565 manganese chloride Substances 0.000 description 1
- 235000002867 manganese chloride Nutrition 0.000 description 1
- 229940099607 manganese chloride Drugs 0.000 description 1
- 229910001437 manganese ion Inorganic materials 0.000 description 1
- 229940099596 manganese sulfate Drugs 0.000 description 1
- 239000011702 manganese sulphate Substances 0.000 description 1
- 235000007079 manganese sulphate Nutrition 0.000 description 1
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 1
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- AZNNFKHEGKMNRM-UHFFFAOYSA-N mercury hydrochloride Chemical compound [H][Cl][Hg] AZNNFKHEGKMNRM-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 201000001811 toxic pneumonitis Diseases 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- 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
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- 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
- B01D53/86—Catalytic processes
- B01D53/8665—Removing heavy metals or compounds thereof, e.g. mercury
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
-
- B01J35/50—
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses a kind of preparation methods of denitration demercuration monoblock type filtrate, it comprises the steps of: and pretreated metal fiber felt is impregnated in metal salt precursor solution, then grown not only in metal fiber felt surface in situ with denitration demercuration catalysis but also the multi-functional monoblock type filtrate of dust removal through the processes such as hydro-thermal and high-temperature calcination.Denitration demercuration dedusting multifunctional composite filter material prepared by the present invention not only can be avoided fly ash granule to the adverse effect of catalyst, can also effective emission reduction fine dust；And catalyst is firmly combined with filtrate, the proper property of filtrate is not influenced, particularly suitable for industrialized production.
Description
Technical field
The present invention relates to a kind of preparation methods of denitration demercuration monoblock type filtrate, belong to combined type filtrate technical field.
Background technique
Nitrogen oxides (NOX) in atmosphere is mainly derived from steel, cement, glass-ceramic, coal-burning power plant, waste incineration etc.
The flue gas given off easily causes the atmosphere pollution phenomenon such as haze, photochemical fog, acid rain.In addition, the mercury in industrial smoke is also
It is Environmental Pollution object, the discharge of category coal-burning power plant is the most serious, and the coal fire discharged mercury into atmosphere mainly has Elemental Mercury
(Hg0), bivalent mercury (Hg2+), granular absorption mercury (Hgp).It wherein, can be by Hg by the processes such as wet desulphurization and dedusting2+With Hgp
Effectively removing, but Hg0 free property is strong, solubility is low in water, it is difficult to remove, most easily cause atmosphere mercury pollution.In addition, dust is outstanding
It is that suspension time is long in an atmosphere for PM10 fine particle below, causes easily to reduce atmospheric visibility, it is normal to influence the mankind
Life and production activity, particle dust, which enters human lung, can also cause toxic pneumonitis or silicosis.In short, above-mentioned environment is dirty
Dye object has become the Social Events of relationship people production and living health, conservation culture and sustainable development, reduces nitrogen oxidation
The discharge amount of object, Elemental Mercury, dust has great importance for alleviating, improving environmental problem.
Currently, the removal for nitrogen oxides, mainly uses NH3-SCR method, wherein V2O5-WO3/TiO2 catalyst is wide
General application, still, high-temperature area of the operation temperature window at 300-400 DEG C, and V is volatile.In addition, if demercuration is using absorption
When mode, the absorption of mercury is closely related with temperature, and flue-gas temperature is higher, and the adsorbing and removing efficiency of mercury is often lower, thus high temperature
Gaseous elemental mercury is difficult to effectively remove in flue gas.Field is post-processed in industrial smoke, sack cleaner is due to high dust collection efficiency, fortune
The features such as row stability is good, is easily recycled has been widely used in the fields such as coal-burning power plant, waste incineration, cement.Wherein, filtrate
It is the core of sack cleaner, such as: glass fibre, PTFE.The use temperature (150-200 DEG C or so) of conventional cloth bag filtrate,
Well below the temperature of catalysis reaction, which has limited the development with denitration demercuration multifunctional filter material.If using non-vanadium denitration
It cooperates with demercuration catalyst and dedusting filtrate compound, realizes that multi-pollutant cooperation-removal then can effectively avoid the above problem.
Since the variable valency metals oxide such as MnOx, CeOX, FeOX, CoOX has a variety of valence states, free oxygen vacancies abundant,
Thus have many advantages, such as good low-temperature catalytic activity, while because its is resourceful, inexpensive, environment-protecting and non-poisonous, having become research
Hot spot.Such as: after the metal salt solution of Mn, Ce, Zr are impregnated in filter media fibre by patent (CN107158799A), then using alkaline solution
Aging process is carried out to it, dedusting denitration composite filtering material fiber, but the easy powder of detached of filtrate of this support type is obtained, influences to remove
Dirt denitration effect.Patent (CN104014200A) is by denitrating catalyst, polytetrafluoroethylene (PTFE) powder, diffusant, coupling agent, lubricant
It is uniformly mixed according to a certain percentage and catalysis filter membrane is made dust removal integrated filtrate is made by hot pressing complex method, although this method
The binding strength of catalyst and filtrate is strengthened, but overlay film hinders the active site exposure of catalyst, catalyst utilization
It is low, the problems such as causing catalytic activity and low efficiency.Thus, denitration demercuration catalyst and dedusting filtrate are coupled in a body technique extremely
The present is still a major challenge.
Summary of the invention
The technical problem to be solved by the invention is to provide one kind to have denitration demercuration dedusting Trinitarian multi-functional multiple
The preparation method for closing filtrate, further provide a kind of good mechanical property, be firmly combined, thermal stability it is good and simple and easy
The preparation method of composite filtering material.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of preparation method of denitration demercuration monoblock type filtrate, comprising the following steps:
(1) pretreatment of metal fiber felt is made into fragment shape, removes the metal fiber felt surface and oil contaminant and oxide,
It is rinsed with deionized water, it is spare after dry；
(2) mixed solution of divalent metal salt and trivalent metal salt is prepared in the preparation of monoblock type filtrate, and wherein divalent metal salt is molten
Liquid concentration is 0.0625 ~ 0.5mol/L, and trivalent metal concentration of salt solution is 0.0125 ~ 0.18mol/L, with catalyst loadings
20-80g/m2Meter, takes metal fiber felt described in appropriate step (1) to be put into mixing salt solution, is adjusted using in-situ deposition agent
Solution ph is 8.5-10.5, is transferred in reaction kettle, under the conditions of 50 ~ 200 DEG C react 6 ~ for 24 hours, be cooled to room temperature, wash,
It is dry, above-mentioned product is calcined to 2 ~ 6h at 350 ~ 550 DEG C to get the filtrate.
The additional amount of metal fiber felt is related with the active component coverage condition of obtained filter material surface, using beyond above-mentioned
Reunion or very few occurs for the active component that the additional amount of range may result in filter material surface load, to cannot achieve activity
The uniform load of component influences the denitration demercuration performance of filtrate；
The height of concentration of metal ions influences the hydrolysis situation of ion, then influences metal composite oxide pattern；
The adjusting of solution ph is too low or excessively high, is all unfavorable for metal ion in the deposition growing on metal fiber felt surface；
Hydrothermal temperature is excessively high, overlong time, then is unfavorable for the holding of porous nanometer structure, influences the stability of catalyst；Temperature
Too low, the hydro-thermal time is too short, will lead to that aluminium, cobalt, the hydrolysis of manganese ion and settling velocity are too slow, and crystal growth is incomplete；
Calcination temperature is higher than above-mentioned section or calcination temperature is too long, will lead to the collapsing of three-dimensional porous structure, is lower than the section
Or calcination time is too short, can draw that metal oxide crystallinity is big, these will affect the ratio of the metal composite oxide filtrate
Surface area, crystalline structure and cellular structure etc., and then influence denitration demercuration activity.
The metal fiber felt includes stainless steel fibre felt, iron-chromium-aluminum felt, nickel fibre felt or alumina silicate fiber felt.
The cobalt salt is one of cobaltous sulfate, cobalt nitrate, cobalt chloride or cobalt acetate, manganese salt be potassium permanganate, manganese sulfate,
One of manganese nitrate, manganese chloride or manganese acetate, aluminium salt are one of aluminium chloride, aluminum sulfate or aluminum nitrate.Different type
Close object in ion hydrolytic precipitation ability difference may cause filter material surface formation metal oxide crystal form, grain size and
Crystallinity is different, to influence the activity of its denitration demercuration.
The in-situ deposition agent be ammonium hydroxide, sodium hydroxide, sodium carbonate, hexamethylenetetramine, urea, ammonium carbonate, ammonium chloride,
One of ammonium fluoride, ammonium hydrogen carbonate are a variety of.Different deposition agents directly affects the metal front for being supported on fibrofelt surface
The type and pattern of body, to influence catalyst effect.
The disk for using impact style that diameter is made as 3cm in the metal fiber felt in step (1).
Supersound washing is carried out to the metal fiber felt using ethyl alcohol and hydrochloric acid in step (1).
Advantageous effects of the invention:
(1) catalyst is compared using metal fiber felt as carrier compared with carriers such as traditional glass mat, PPS fibrofelts, resistance to
High temperature, corrosion-resistant, three-dimensional porous structure, heat conduction efficiency are high, can be to avoid the effective active component group of sintering under high temperature environment
Poly-, porosity height, large specific surface area, the features such as size distribution is uniform, filtering accuracy is high, are conducive to catalyst on its surface
Uniform load coupling, metallic atom and metallic fiber form strong interaction, not easily to fall off and have stable denitration demercuration
Efficiency.
(2) catalyst has three-dimensional hierarchical structure, and orderly metal nano chip arrays are coupled in metal fiber felt in situ
Air resistance is reduced on surface, and raising active component is evenly dispersed, improves unit area catalyst utilization, avoids traditional
The insufficient problem of active site exposure of coated filter material containing catalyst.
(3) the denitration demercuration integration filtrate active component is the composite oxides for including divalent metal and trivalent metal,
By synergic catalytic effect, good low-temperature denitration activity and demercuration efficiency are presented, and there are good dust removing effects.
(4) catalyst is simple and easy by hydro-thermal and the preparation for calcining two-step method.Catalyst is raw in situ in filter material surface
It is long, it is not necessarily to post forming, production technology and cost can be simplified, and is avoided that the secondary pollution that binder generates in tradition coating.
Detailed description of the invention
Fig. 1 is filtrate of the present invention at different temperatures de- of filtrate prepared by embodiment 3 in no hydrogen chloride
Mercury rate；
Fig. 2 is filtrate prepared by the present invention electronic image under the microscope.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
Embodiment 1:
Stainless steel fibre felt is washed into the disk that diameter is 3 cm, 3 disks is taken to be surpassed respectively by the hydrochloric acid of ethyl alcohol and 1 mmol/L
Sound washs 1 h, removes surface and oil contaminant and oxide, is then rinsed by deionized water, dry at 60 DEG C；
Mn (NO is weighed first3)2(5mmol) and Al (NO3)3.9H2O(2mmol it) is dissolved in the deionized water of 80 ml, is stirred strongly
It mixes to being completely dissolved to form solution A, 25% ammonium hydroxide is slowly added dropwise in solution A, it is molten to 8.5 ± 0.2 stirrings to adjust pH value
Solution forms suspension, is transferred in the reaction kettle of 100ml, is put into baking oven, and reaction temperature control is 100 DEG C, and the reaction time is
For 24 hours, reaction end is taken out reaction kettle and is cooled to room temperature, and sediment is taken out, with deionized water and each centrifuge washing 3 of dehydrated alcohol
It is secondary, 80 DEG C of dry 12h.Obtain presoma Co3-xMnxAl-LDHs；By above-mentioned product 400o2 h are calcined in C air, and institute is made
The denitration demercuration monoblock type filtrate stated.
On the stainless steel fixed bed denitration demercuration reactor of laboratory to the catalysis filtrate prepared in above-mentioned case study on implementation into
Row test, test filtrate quality be 3g, denitration demercuration test condition: 50-300 DEG C of reaction temperature, air speed 20000h-1, NH3 concentration
500ppm, NO concentration 500ppm, 5ppmHCl, O2Concentration 5%, N2For Balance Air, following embodiment is tested with embodiment 1.
The denitration demercuration test of 1 embodiment 1 of table at different temperatures
| Removal efficiency (%) | 50℃ | 100℃ | 150℃ | 200℃ | 250℃ | 300℃ |
| Denitrification rate | 20.2 | 42.6 | 65.3 | 82.3 | 83.8 | 75.1 |
| Demercuration rate | 30.1 | 72.5 | 83.2 | 84.7 | 82.5 | 82.3 |
Embodiment 2:
Nickel fibre felt is washed into the disk that diameter is 3 cm, takes 3 disks respectively by the hydrochloric ultrasonic wave of ethyl alcohol and 1 mmol/L
1 h is washed, surface and oil contaminant and oxide is removed, is then rinsed by deionized water, 60oIt is dry under C；
Co (NO is weighed first3)2.6H2O(8 mmol), 50% Mn (NO3)2(15mmol) and Al (NO3)3.9H2O(7 mmol)
It is dissolved in the deionized water of 75ml, strong stirring to form solution A to being completely dissolved, by 2mol/L sodium hydroxide, sodium carbonate liquor
It is slowly added dropwise in solution A, adjusts pH value to 9.5 ± 0.2 stirring and dissolvings and form suspension B, suspension B is transferred to
In the reaction kettle of 100ml, it is put into baking oven, reaction temperature control is 150 DEG C, and the reaction time is 12 h, and reaction terminates to take out reaction
Kettle is cooled to room temperature, and sediment is taken out, with deionized water and each centrifuge washing of dehydrated alcohol 3 times, 80 DEG C of dry 12h.Before obtaining
Drive body Co3-xMnxAl-LDHs；By above-mentioned product 300o2 h are calcined in C air, and the denitration demercuration monoblock type filter is made
Material.
The denitration demercuration test of 2 embodiment 2 of table at different temperatures
| Removal efficiency (%) | 50℃ | 100℃ | 150℃ | 200℃ | 250℃ | 300℃ |
| Denitrification rate | 25.5 | 50.6 | 75.8 | 92.3 | 90.6 | 85.2 |
| Demercuration rate | 35.4 | 82.5 | 88.9 | 90.2 | 89.5 | 85.6 |
Embodiment 3:
Iron-chromium-aluminum felt is washed into the disk that diameter is 3 cm, takes 3 disks respectively by the hydrochloric acid of ethyl alcohol and 1 mmol/L
1 h of supersound washing removes surface and oil contaminant and oxide, is then rinsed by deionized water, 60oIt is dry under C；
Co (NO is weighed first3)2.6H2O(10 mmol), 50% Mn (NO3)2(20mmol) and Al (NO3)3.9H2O(10
Mmol it) is dissolved in the deionized water of 60 ml, strong stirring to form solution A to being completely dissolved, and 25% ammonium hydroxide is slowly added dropwise
Into solution A, adjusts pH value to 10.5 ± 0.2 stirring and dissolvings and form suspension B, suspension B is transferred to the reaction kettle of 100ml
In, it is put into baking oven, reaction temperature control is 200 DEG C, and the reaction time is 8 h, and reaction end is taken out reaction kettle and is cooled to room temperature, takes
Sediment out, with deionized water and each centrifuge washing of dehydrated alcohol 3 times, 80 DEG C of dry 12h.Obtain presoma Co3-xMnxAl-
LDHs；By above-mentioned product 400o3 h are calcined in C air, and the tool denitration demercuration monoblock type filtrate is made.
The denitration demercuration test of 3 embodiment 3 of table at different temperatures
| Removal efficiency (%) | 50℃ | 100℃ | 150℃ | 200℃ | 250℃ | 300℃ |
| Denitrification rate | 29.2 | 54.5 | 78.9 | 92.3 | 90.5 | 84.1 |
| Demercuration rate | 38.1 | 84.5 | 88.5 | 90.7 | 90.5 | 87.3 |
Embodiment 4:
Iron-chromium-aluminum felt is washed into the disk that diameter is 3 cm, takes 3 disks respectively by the hydrochloric acid of ethyl alcohol and 1 mmol/L
1 h of supersound washing removes surface and oil contaminant and oxide, is then rinsed by deionized water, 60oIt is dry under C；
Ni (NO is weighed first3)2.6H2O(10 mmol), 50% Mn (NO3)2(20mmol) and Fe (NO3)3.9H2O(10
Mmol it) is dissolved in the deionized water of 60 ml, strong stirring to form solution A to being completely dissolved, by 2mol/L sodium hydroxide, carbonic acid
Sodium solution is slowly added dropwise in solution A, is adjusted pH value to 10.5 ± 0.2 stirring and dissolvings and is formed suspension B, suspension B is turned
It moves in the reaction kettle of 100ml, is put into baking oven, reaction temperature control is 200 DEG C, and the reaction time is 8 h, and reaction terminates to take out anti-
It answers kettle to be cooled to room temperature, sediment is taken out, with deionized water and each centrifuge washing of dehydrated alcohol 3 times, 80 DEG C of dry 12h.It obtains
Presoma Ni3-xMnxFe-LDHs；By above-mentioned product 400o3 h are calcined in C air, the tool denitration demercuration for being made described is whole
Formula filtrate.
The denitration demercuration test of 4 embodiment 4 of table at different temperatures
| Removal efficiency (%) | 50℃ | 100℃ | 150℃ | 200℃ | 250℃ | 300℃ |
| Denitrification rate | 17.2 | 38.3 | 52.5 | 72.8 | 80.7 | 69.1 |
| Demercuration rate | 25.3 | 60.5 | 73.4 | 74.7 | 72.5 | 70.3 |
The above is only a preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of preparation method of denitration demercuration monoblock type filtrate, characterized in that the following steps are included:
(1) pretreatment of metal fiber felt is made into fragment shape, removes the metal fiber felt surface and oil contaminant and oxide,
It is rinsed with deionized water, it is spare after dry；
(2) mixed solution of divalent metal salt and trivalent metal salt is prepared in the preparation of monoblock type filtrate, and wherein divalent metal salt is molten
Liquid concentration is 0.0625 ~ 0.5mol/L, and trivalent metal concentration of salt solution is 0.0125 ~ 0.18mol/L, with catalyst loadings
20-80g/m2Meter, takes metal fiber felt described in appropriate step (1) to be put into mixing salt solution, is adjusted using in-situ deposition agent
Solution ph is 8.5-10.5, is transferred in reaction kettle, under the conditions of 50 ~ 200 DEG C react 6 ~ for 24 hours, be cooled to room temperature, wash,
It is dry, above-mentioned product is calcined to 2 ~ 6h at 350 ~ 550 DEG C to get the filtrate.
2. a kind of preparation method of denitration demercuration monoblock type filtrate according to claim 1, characterized in that the divalent gold
Belonging to salt includes one or both of cobalt salt, nickel salt, manganese salt, magnesium salts, zinc salt or cerium salt, the trivalent metal salt include aluminium salt or
Molysite.
3. a kind of preparation method of denitration demercuration monoblock type filtrate according to claim 1, characterized in that the metal is fine
Tieing up felt includes stainless steel fibre felt, iron-chromium-aluminum felt, nickel fibre felt or alumina silicate fiber felt.
4. a kind of preparation method of denitration demercuration monoblock type filtrate according to claim 1, characterized in that metal salt solution
Selected from permanganate, sulfate, nitrate, chlorate or acetate.
5. a kind of preparation method of denitration demercuration monoblock type filtrate according to claim 1, characterized in that the original position is heavy
Product agent is ammonium hydroxide, in sodium hydroxide, sodium carbonate, hexamethylenetetramine, urea, ammonium carbonate, ammonium chloride, ammonium fluoride, ammonium hydrogen carbonate
It is one or more.
6. a kind of preparation method of denitration demercuration monoblock type filtrate according to claim 1, characterized in that in step (1)
The disk for using impact style that diameter is made as 3cm in the metal fiber felt.
7. a kind of preparation method of denitration demercuration monoblock type filtrate according to claim 1, characterized in that in step (1)
Supersound washing is carried out to the metal fiber felt using ethyl alcohol and hydrochloric acid.
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