CN112808263B - 一种低so2/so3转化率的脱硝催化剂及其制备方法 - Google Patents
一种低so2/so3转化率的脱硝催化剂及其制备方法 Download PDFInfo
- Publication number
- CN112808263B CN112808263B CN202011622993.8A CN202011622993A CN112808263B CN 112808263 B CN112808263 B CN 112808263B CN 202011622993 A CN202011622993 A CN 202011622993A CN 112808263 B CN112808263 B CN 112808263B
- Authority
- CN
- China
- Prior art keywords
- powder
- nitrate
- catalyst
- denitration catalyst
- denitration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 99
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 84
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims abstract description 62
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000004471 Glycine Substances 0.000 claims abstract description 31
- 238000003756 stirring Methods 0.000 claims abstract description 29
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 28
- 238000001354 calcination Methods 0.000 claims abstract description 26
- QGAVSDVURUSLQK-UHFFFAOYSA-N ammonium heptamolybdate Chemical compound N.N.N.N.N.N.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo] QGAVSDVURUSLQK-UHFFFAOYSA-N 0.000 claims abstract description 18
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims abstract description 18
- 229910001960 metal nitrate Inorganic materials 0.000 claims abstract description 18
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 11
- 229910017053 inorganic salt Inorganic materials 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000006185 dispersion Substances 0.000 claims abstract description 3
- 239000011259 mixed solution Substances 0.000 claims abstract description 3
- 239000002904 solvent Substances 0.000 claims abstract description 3
- 235000010215 titanium dioxide Nutrition 0.000 claims description 29
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 22
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 20
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000007864 aqueous solution Substances 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 13
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 12
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 12
- 239000011780 sodium chloride Substances 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- 239000001103 potassium chloride Substances 0.000 claims description 9
- 235000011164 potassium chloride Nutrition 0.000 claims description 9
- 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 claims description 7
- FYDKNKUEBJQCCN-UHFFFAOYSA-N lanthanum(3+);trinitrate Chemical compound [La+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYDKNKUEBJQCCN-UHFFFAOYSA-N 0.000 claims description 6
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims description 6
- YZDZYSPAJSPJQJ-UHFFFAOYSA-N samarium(3+);trinitrate Chemical compound [Sm+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O YZDZYSPAJSPJQJ-UHFFFAOYSA-N 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 16
- 229910044991 metal oxide Inorganic materials 0.000 abstract description 15
- 150000004706 metal oxides Chemical class 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 11
- 239000002245 particle Substances 0.000 abstract description 11
- 238000001179 sorption measurement Methods 0.000 abstract description 11
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 6
- 238000009841 combustion method Methods 0.000 abstract description 6
- 238000009826 distribution Methods 0.000 abstract description 5
- 238000000227 grinding Methods 0.000 abstract description 5
- 238000005520 cutting process Methods 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000010531 catalytic reduction reaction Methods 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 3
- 230000001151 other effect Effects 0.000 abstract description 2
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 50
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 50
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 22
- 238000005303 weighing Methods 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 17
- 239000000203 mixture Substances 0.000 description 9
- 229910010413 TiO 2 Inorganic materials 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000010008 shearing Methods 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 5
- 239000003546 flue gas Substances 0.000 description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 206010027439 Metal poisoning Diseases 0.000 description 2
- 208000005374 Poisoning Diseases 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910000420 cerium oxide Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910000480 nickel oxide Inorganic materials 0.000 description 2
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 2
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 2
- 231100000572 poisoning Toxicity 0.000 description 2
- 230000000607 poisoning effect Effects 0.000 description 2
- 229910001954 samarium oxide Inorganic materials 0.000 description 2
- 229940075630 samarium oxide Drugs 0.000 description 2
- FKTOIHSPIPYAPE-UHFFFAOYSA-N samarium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Sm+3].[Sm+3] FKTOIHSPIPYAPE-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000010501 heavy metal poisoning Diseases 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000011020 pilot scale process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/28—Molybdenum
-
- 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
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- 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
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28016—Particle form
-
- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3021—Milling, crushing or grinding
-
- 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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- 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
- B01J23/85—Chromium, molybdenum or tungsten
- B01J23/88—Molybdenum
- B01J23/887—Molybdenum containing in addition other metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/8877—Vanadium, tantalum, niobium or polonium
-
- 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
- B01J33/00—Protection of catalysts, e.g. by coating
-
- B01J35/61—
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0027—Powdering
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
- B01J37/088—Decomposition of a metal salt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/406—Ammonia
-
- 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
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
-
- 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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
Abstract
本发明涉及选择性催化还原催化剂的技术领域,尤其是涉及一种低SO2/SO3转化率的脱硝催化剂及其制备方法,制备方法包括以下步骤:将金属硝酸盐、甘氨酸和无机盐助剂置于溶剂中搅拌溶解,煅烧后得到粉末A;将钛白粉浸渍于偏钒酸铵和七钼酸铵的混合溶液中搅拌溶解,煅烧后得到粉末B;将粉末A与粉末B混合并高剪切分散,制得所述脱硝催化剂。本发明采用甘氨酸燃烧法制备金属氧化物,所制得的金属氧化物颗粒尺寸小、粒径分布均匀、孔道多、吸附能力强,可吸附SCR反应过程中催化剂上的SO2和SO3,进而降低催化剂的SO2/SO3转化率;而利用高剪切分散过程中所产生的离心挤压、高速切割、撞击和研磨等作用,可实现粉末A和粉末B的高度混匀,进而保障催化剂的高脱硝活性。
Description
技术领域
本发明涉及选择性催化还原催化剂的技术领域,尤其是涉及一种低SO2/SO3转化率的脱硝催化剂及其制备方法。
背景技术
氮氧化物(NOx)是人类生活活动排放到大气中的首要污染物之一,其主要来源有两方面,一是生产生活中化石燃料的燃烧,其中以火力发电厂、冶炼行业、工业窑炉等固定源排放的烟气为主;二是来源于车辆等移动源排放的尾气。氮氧化物(NOx)是目前形成酸雨、光化学烟雾、破坏臭氧层的一个主要原因。随着我国生产力的发展,氮氧化物排放逐年增加,已严重危机社会发展与人体健康,并已成为节能减排的重点。
选择性催化还原(SCR)是目前国内外应用最为广泛的烟气脱硝技术,是指在O2存在时,在催化剂的作用下,采用还原剂NH3将燃煤烟气中的NO还原为无害的N2和水。因此,NH3-SCR具有高效选择性、经济性、脱硝效率高等特点,是实现氮氧化物超低排放的必要手段,其中核心脱硝催化剂性能决定了SCR技术的应用条件和范围。
然而,该催化剂同时具备一定的SO2氧化性能,所生成的SO3会进一步与烟气中的NH3反应生成硫酸氢铵。硫酸氢铵会附着在催化剂表面,造成催化剂脱硝活性的降低。并且还会对脱硝系统下游的空预器产生严重影响。因此,在保障脱硝催化剂高脱硝活性的同时,减少硫酸氢铵的生成,成为大气污染防治领域的研究热点。
针对上述问题,开发一种新型的低SO2/SO3转化率的脱硝催化剂及其制备方法,是本领域技术人员亟需解决的一项技术问题。
发明内容
本发明的第一目的在于提供一种低SO2/SO3转化率的脱硝催化剂,该催化剂脱硝活性高、SO2/SO3转化率低;
本发明的第二目的在于提供一种低SO2/SO3转化率的脱硝催化剂的制备方法,该制备方法简单便捷、易于操作。
本发明提供的一种低SO2/SO3转化率的脱硝催化剂的制备方法,包括以下步骤:
S1、将金属硝酸盐、甘氨酸和无机盐助剂置于溶剂中搅拌溶解,煅烧后得到粉末A;
S2、将钛白粉浸渍于偏钒酸铵和七钼酸铵的混合溶液中搅拌溶解,煅烧后得到粉末B;
S3、将粉末A与粉末B混合并高剪切分散,制得所述脱硝催化剂。
本发明采用甘氨酸燃烧法制备金属氧化物,所制得的金属氧化物颗粒尺寸小、粒径分布均匀、比表面积大、孔道多、吸附能力强,可以吸附SCR反应过程中催化剂上的SO2和SO3,进而降低催化剂的SO2/SO3转化率;此外,利用高剪切分散过程中所产生的离心挤压、高速切割、撞击和研磨等作用,实现粉末A和粉末B的高度混匀,不仅充分发挥了粉末A对SO2和SO3的吸附作用,最大程度降低粉末A对催化剂活性组分结构、价态的影响,而且有效利用了粉末B较高的脱硝活性,进而保障了催化剂的高脱硝活性。综上,本发明的制备方法具有操作简便、制备周期短,所制备得到脱硝催化剂具有降低催化剂的SO2/SO3转化率,保障催化剂高脱硝活性的特点。
进一步,步骤S1具体包括:将金属硝酸盐、甘氨酸和无机盐助剂置于去离子水中搅拌溶解后,于750-950℃下煅烧1-4h,冷却得到粉末A。
采用甘氨酸燃烧法制备金属氧化物,所制得的金属氧化物颗粒尺寸小、粒径分布均匀、比表面积大、孔道多、吸附能力强,可以吸附SCR反应过程中催化剂上的SO2和SO3,进而降低催化剂的SO2/SO3转化率。
进一步,步骤S1中,所述金属硝酸盐与所述甘氨酸的摩尔比为1:(1-5);
所述金属硝酸盐与所述无机盐助剂的质量比为1:(0.05-0.2)。
为保证前驱体金属硝酸盐在燃烧剂甘氨酸的作用下完全转化为金属氧化物,控制金属硝酸盐与甘氨酸的摩尔比为1:(1-5);而无机盐助剂的引入可进一步促进金属硝酸盐的转化,并使所制得的金属氧化物粒径分布更加均匀、尺寸更小、比表面积更大,在本发明中金属硝酸盐与无机盐助剂的质量最佳配比为1:(0.05-0.2)。
进一步,步骤S1中,所述金属硝酸盐为硝酸铝、硝酸铈、硝酸镧、硝酸锌、硝酸钐、硝酸镍或硝酸铁中的任意一种或多种。
进一步,步骤S1中,所述无机盐助剂为氯化钠或氯化钾中的任意一种或两种。
进一步,步骤S2具体包括:将钛白粉浸渍于偏钒酸铵和七钼酸铵的水溶液中,经搅拌、烘干水分后,于400-600℃下煅烧1-4h,冷却得到粉末B。
进一步,步骤S2中,所述钛白粉、所述偏钒酸铵和所述七钼酸铵的质量比为(79-97):(0.5-5):(1-8)。
在本发明脱硝催化剂的制备过程中,为保证所制备的催化剂具有较高的脱硝效率,钛白粉、偏钒酸铵和七钼酸铵的质量比为(79-97):(0.5-5):(1-8),具体可根据所要求得脱硝催化剂中V2O5、MoO3和TiO2的质量比确定即可。
进一步,步骤S3具体包括:将粉末A与粉末B混合并于10000-16000rpm转速下高剪切分散1-4h,制得所述脱硝催化剂。
利用高剪切分散过程中所产生的离心挤压、高速切割、撞击和研磨等作用,可实现粉末A和粉末B的高度混匀,不仅充分发挥了粉末A对SO2和SO3的吸附作用,最大程度降低粉末A对催化剂活性组分结构、价态的影响,而且有效利用了粉末B较高的脱硝活性,进而保障了催化剂的高脱硝活性。
上述制备方法制备得到的脱硝催化剂也理应属于本发明的保护范围,其中,所述脱硝催化剂中V2O5的含量为0.5-5%,MoO3的含量为1-8%,金属硝酸盐对应的金属氧化物的含量为1-8%,其余为TiO2。
采用上述方法制备得到的脱硝催化剂中V2O5的含量为0.5-5%,MoO3的含量为1-8%,金属硝酸盐对应的金属氧化物的含量为1-8%,其余为TiO2。该催化剂采利用多孔金属氧化物吸附SCR反应过程中的SO2、SO3,减少了SO2与脱硝催化剂活性组分的接触面积,降低了催化剂SO2/SO3的转化率,在保障脱硝催化剂高脱硝活性的同时,减少了硫酸氢铵的生成。
本发明低SO2/SO3转化率的脱硝催化剂的制备方法,与现有技术相比,具有以下优点:
1、本发明采用甘氨酸燃烧法制备金属氧化物,具有操作简便、制备周期短等优点,并且所制得的金属氧化物颗粒尺寸小、粒径分布均匀、比表面积大、孔道多、吸附能力强,可以吸附SCR反应过程中催化剂上的SO2和SO3,进而降低催化剂的SO2/SO3转化率;
2、本发明采用高剪切分散方法,利用高剪切分散过程中所产生的离心挤压、高速切割、撞击和研磨等作用,实现粉末A和粉末B的高度混匀,不仅充分发挥了粉末A对SO2和SO3的吸附作用,最大程度降低粉末A对催化剂活性组分结构、价态的影响,而且有效利用了粉末B较高的脱硝活性,进而保障了催化剂的高脱硝活性;
3、本发明的制备方法制备得到的低SO2/SO3转化率脱硝催化剂,兼具优异的抗碱金属中毒性能、抗重金属中毒性能,进一步提升了催化剂的运行稳定性。
具体实施方式
应该指出,以下详细说明都是例示性的,旨在对本申请提供进一步的说明。除非另有指明,本文使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。
需要注意的是,这里所使用的术语仅是为了描述具体实施方式,而非意图限制根据本申请的示例性实施方式。如在这里所使用的,除非上下文另外明确指出,否则单数形式也包括复数形式,此外,还应当理解的是,当在本说明中使用术语“包含”和/或“包括”时,其指明存在特征、步骤、操作、器件、组件和/或它们的组合。
下面将结合实施例对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
S11、称取硝酸铁置于坩埚中,加入甘氨酸、氯化钠和去离子水搅拌溶解后,将混合物置于马弗炉中于750℃下煅烧4h,冷却得到粉末A,其中,甘氨酸与硝酸铁的物质的量之比为1:1,氯化钠的质量为硝酸铁质量的5%;
S12、称取钛白粉,并将钛白粉浸渍于偏钒酸铵和七钼酸铵的水溶液中,经搅拌、烘干水分后,于400℃下煅烧4h,冷却得到粉末B;
S13、将粉末A与粉末B置于高剪切分散机中,并于16000rpm转速下剪切分散1h,制得脱硝催化剂。
所制得脱硝催化剂的V2O5含量为0.5%,MoO3含量为8%,氧化铁含量为8%,其余为TiO2。
实施例2
S21、称取硝酸铝置于坩埚中,加入甘氨酸、氯化钠和去离子水搅拌溶解后,将混合物置于马弗炉中于800℃下煅烧3h,冷却得到粉末A,其中,甘氨酸与硝酸铝的物质的量之比为1.5:1,氯化钠的质量为硝酸铝质量的6%;
S22、称取钛白粉,并将钛白粉浸渍于偏钒酸铵和七钼酸铵的水溶液中,经搅拌、烘干水分后,于450℃下煅烧3.5h,冷却得到粉末B;
S23、将粉末A与粉末B置于高剪切分散机中,并于15000rpm转速下剪切分散1.5h,制得脱硝催化剂。
所制得脱硝催化剂的V2O5含量为1%,MoO3含量为5%,氧化铝含量为6%,其余为TiO2。
实施例3
S31、称取硝酸铈置于坩埚中,加入甘氨酸、氯化钾和去离子水搅拌溶解后,将混合物置于马弗炉中于800℃下煅烧3h,冷却得到粉末A,其中,甘氨酸与硝酸铈的物质的量之比为2:1,氯化钾的质量为硝酸铈质量的8%;
S32、称取钛白粉,并将钛白粉浸渍于偏钒酸铵和七钼酸铵的水溶液中,经搅拌、烘干水分后,于600℃下煅烧1h,冷却得到粉末B;
S33、将粉末A与粉末B置于高剪切分散机中,并于14000rpm转速下剪切分散2h,制得脱硝催化剂。
所制得脱硝催化剂的V2O5含量为2%,MoO3含量为4%,氧化铈含量为4%,其余为TiO2。
实施例4
S41、称取硝酸镧置于坩埚中,加入甘氨酸、氯化钾和去离子水搅拌溶解后,将混合物置于马弗炉中于800℃下煅烧3h,冷却得到粉末A,其中,甘氨酸与硝酸镧的物质的量之比为4:1,氯化钾的质量为硝酸镧质量的15%;
S42、称取钛白粉,并将钛白粉浸渍于偏钒酸铵和七钼酸铵的水溶液中,经搅拌、烘干水分后,于550℃下煅烧1.5h,冷却得到粉末B;
S43、将粉末A与粉末B置于高剪切分散机中,并于10000rpm转速下剪切分散4h,制得脱硝催化剂。
所制得脱硝催化剂的V2O5含量为3%,MoO3含量为2%,氧化铈含量为2%,其余为TiO2。
实施例5
S51、称取硝酸钐置于坩埚中,加入甘氨酸、氯化钠和去离子水搅拌溶解后,将混合物置于马弗炉中于900℃下煅烧2h,冷却得到粉末A,其中,甘氨酸与硝酸钐的物质的量之比为5:1,氯化钠的质量为硝酸钐质量的20%;
S52、称取钛白粉,并将钛白粉浸渍于偏钒酸铵和七钼酸铵的水溶液中,经搅拌、烘干水分后,于600℃下煅烧1h,冷却得到粉末B;
S53、将粉末A与粉末B置于高剪切分散机中,并于12000rpm转速下剪切分散3h,制得脱硝催化剂。
所制得脱硝催化剂的V2O5含量为4%,MoO3含量为3%,氧化钐含量为4%,其余为TiO2。
实施例6
S61、称取硝酸镍置于坩埚中,加入甘氨酸、氯化钠和去离子水搅拌溶解后,将混合物置于马弗炉中于950℃下煅烧1h,冷却得到粉末A,其中,甘氨酸与硝酸镍的物质的量之比为3.5:1,氯化钠的质量为硝酸镍质量的10%;
S62、称取钛白粉,并将钛白粉浸渍于偏钒酸铵和七钼酸铵的水溶液中,经搅拌、烘干水分后,于500℃下煅烧2h,冷却得到粉末B;
S63、将粉末A与粉末B置于高剪切分散机中,并于14000rpm转速下剪切分散2h,制得脱硝催化剂。
所制得脱硝催化剂的V2O5含量为5%,MoO3含量为2%,氧化镍含量为1%,其余为TiO2。
实施例7
S71、称取硝酸锌置于坩埚中,加入甘氨酸、氯化钾和去离子水搅拌溶解后,将混合物置于马弗炉中于750℃下煅烧4h,冷却得到粉末A,其中,甘氨酸与硝酸锌的物质的量之比为3:1,氯化钠的质量为硝酸锌质量的12%;
S72、称取钛白粉,并将钛白粉浸渍于偏钒酸铵和七钼酸铵的水溶液中,经搅拌、烘干水分后,于480℃下煅烧2.5h,冷却得到粉末B;
S73、将粉末A与粉末B置于高剪切分散机中,并于16000rpm转速下剪切分散1h,制得脱硝催化剂。
所制得脱硝催化剂的V2O5含量为2%,MoO3含量为5%,氧化镍含量为6%,其余为TiO2。
对照例1
S1、称取钛白粉,浸渍在偏钒酸铵和七钼酸铵的水溶液中,经搅拌、烘干水分后,于400℃煅烧4h,冷却后加入氧化铁,研磨均匀,制得脱硝催化剂。
所制得脱硝催化剂中V2O5含量为0.5%,MoO3含量为8%,氧化铁含量为8%,其余为TiO2。
对比例2
S1、称取钛白粉并浸渍在硝酸铝的水溶液中,经搅拌、烘干水分后,于400℃焙烧4h;
S2、将制得的粉末浸渍在偏钒酸铵和七钼酸铵的水溶液中,经搅拌、烘干水分后,于400℃煅烧4h,冷却后制得脱硝催化剂。
所制得脱硝催化剂中V2O5含量为1%,MoO3含量为5%,氧化铝含量为6%,其余为TiO2。
对比例3
S1、称取硝酸锌置于坩埚中,加入甘氨酸、氯化钾和去离子水,搅拌均匀后,将混合物置于马弗炉中,于750℃焙烧4h,冷却后制得粉末A,其中,甘氨酸和硝酸锌的物质的量比为3:1,氯化钾的质量为硝酸锌质量的12%;
S2、称取钛白粉,浸渍在偏钒酸铵和七钼酸铵的水溶液中,经搅拌、烘干水分后,于480℃焙烧2.5h,冷却后制得粉末B;
S3、将粉末A和粉末B机械混合均匀后,制得脱硝催化剂。
所制得脱硝催化剂中V2O5含量为2%,MoO3含量为5%,氧化锌含量为6%,其余为TiO2。
为研究本发明制备方法所制备得到的脱硝催化剂的脱硝性能,对实施例1-7及对照例1-3所制备得到的脱硝催化剂进行了脱硝性能测试。测试条件如下:测试温度分为为250℃、350℃、450℃,NH3的浓度为500ppm,NH3/NO=1,SO2的浓度为300ppm,H2O的浓度为5%,GHSV=120000h-1。实施例及对照例所得脱硝催化剂的脱硝效率如表1所示。
表1实施例及对照例所得脱硝催化剂的脱硝效率
由表1可知,采用本发明方法制备的脱硝催化剂,在250-450℃温度区间内脱硝效率均较高,并且随测试温度的升高呈升高趋势;而对照例1、对照例2中因金属氧化物采用直接添加的方式,该方法制得的金属氧化物颗粒尺寸较大且不均匀,吸附能力相较于本发明的甘氨酸燃烧法大大降低;对照例3中因粉末A及粉末B采用简单的机械混合方式,影响了粉末A及粉末B的高度混合,使得粉末A对SO2和SO3的吸附作用及粉末B的脱硝性能在很大程度上被抑制。因此,通过本发明脱硝催化剂的制备方法制备得到的脱硝催化剂具备较高的脱硝活性。
此外,本发明还将上述实施例和对照例中制备的脱硝催化剂制成平板式脱硝催化剂,进行全尺寸中试SO2/SO3转化率(单层)测试。测试条件如下:催化剂节距为6mm,壁厚为1mm,烟气温度为360℃,H2O含量为9%,O2浓度为3.5%,NH3浓度为400ppm,NH3/NO=1,SO2浓度为300ppm。实施例及对照例所得脱硝催化剂的SO2/SO3转化率(单层)如表2所示。
表2实施例及对照例所得脱硝催化剂的SO2/SO3转化率(单层)
同理,由表2可知,因对照例1、对照例2中金属氧化物采用直接添加的方式,对照例3中粉末A及粉末B采用简单的机械混合方式,导致制得的金属氧化物颗粒尺寸较大且不均匀,吸附能力相较于本发明的甘氨酸燃烧法大大降低,而简单的机械混合方式影响了粉末A及粉末B的高度混合,使得粉末A对SO2和SO3的吸附作用及粉末B的脱硝性能在很大程度上被抑制。因此,通过本发明脱硝催化剂的制备方法制备得到的脱硝催化剂具备较低的SO2/SO3转化率,其SO2/SO3转化率最低可达0.08%。
最后,本发明对实施例及对照例所得脱硝催化剂进行了抗中毒性能测试。首先向各催化剂上分别负载0.8%的K2O和1%的As2O3,再按上述脱硝性能的测试条件,在350℃下进行测试。实施例及对照例所得脱硝催化剂的脱硝效率如表3所示。
表3实施例及对照例所得脱硝催化剂的脱硝效率
由表3可知,当实施例1-7所制备得到的脱硝催化剂上分别负载0.8%的K2O和1%的As2O3时,其脱硝效率并未发生明显的降低,而对照例1-3所制备得到的脱硝催化剂的脱硝性能出现大幅降低。由此可见,本发明的制备方法制备得到的脱硝催化剂不仅具有较低的SO2/SO3转化率、较高的脱硝活性,同时具备较优的抗中毒性能。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims (5)
1.一种低SO2/SO3转化率的脱硝催化剂的制备方法,其特征在于,包括以下步骤:
S1、将金属硝酸盐、甘氨酸和无机盐助剂置于溶剂中搅拌溶解,煅烧后得到粉末A;
S2、将钛白粉浸渍于偏钒酸铵和七钼酸铵的混合溶液中搅拌溶解,煅烧后得到粉末B;
S3、将粉末A与粉末B混合并高剪切分散,制得所述脱硝催化剂;
步骤S1具体包括:将金属硝酸盐、甘氨酸和无机盐助剂置于去离子水中搅拌溶解后,于750-950℃下煅烧1-4h,冷却得到粉末A;
步骤S1中,所述金属硝酸盐与所述甘氨酸的摩尔比为1:(1-5);
所述金属硝酸盐与所述无机盐助剂的质量比为1:(0.05-0.2);
步骤S1中,所述金属硝酸盐为硝酸铝、硝酸铈、硝酸镧、硝酸锌、硝酸钐、硝酸镍或硝酸铁中的任意一种或多种;
步骤S1中,所述无机盐助剂为氯化钠或氯化钾中的任意一种或两种。
2.根据权利要求1所述的制备方法,其特征在于,步骤S2具体包括:将钛白粉浸渍于偏钒酸铵和七钼酸铵的水溶液中,经搅拌、烘干水分后,于400-600℃下煅烧1-4h,冷却得到粉末B。
3.根据权利要求2所述的制备方法,其特征在于,步骤S2中,所述钛白粉、所述偏钒酸铵和所述七钼酸铵的质量比为(79-97):(0.5-5):(1-8)。
4.根据权利要求1所述的制备方法,其特征在于,步骤S3具体包括:将粉末A与粉末B混合并于10000-16000rpm转速下高剪切分散1-4h,制得所述脱硝催化剂。
5.权利要求1-4任一所述制备方法制备得到的脱硝催化剂,其特征在于,所述脱硝催化剂中V2O5的含量为0.5-5%,MoO3的含量为1-8%,金属硝酸盐对应的金属氧化物的含量为1-8%,其余为TiO2。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011622993.8A CN112808263B (zh) | 2020-12-30 | 2020-12-30 | 一种低so2/so3转化率的脱硝催化剂及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011622993.8A CN112808263B (zh) | 2020-12-30 | 2020-12-30 | 一种低so2/so3转化率的脱硝催化剂及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN112808263A CN112808263A (zh) | 2021-05-18 |
CN112808263B true CN112808263B (zh) | 2023-06-06 |
Family
ID=75854915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202011622993.8A Active CN112808263B (zh) | 2020-12-30 | 2020-12-30 | 一种低so2/so3转化率的脱硝催化剂及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112808263B (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113289651B (zh) * | 2021-06-09 | 2023-07-14 | 大唐南京环保科技有限责任公司 | 一种低so2氧化率脱硝催化剂及其制备方法和应用 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5114702A (en) * | 1988-08-30 | 1992-05-19 | Battelle Memorial Institute | Method of making metal oxide ceramic powders by using a combustible amino acid compound |
JP4755131B2 (ja) * | 2007-03-29 | 2011-08-24 | 三菱重工業株式会社 | 複合酸化物触媒およびその製造方法並びに排ガス浄化装置 |
CN102125834B (zh) * | 2011-01-14 | 2012-11-28 | 上海交通大学 | 钛基纳米复合金属氧化物催化剂及其制备方法 |
CN102350340B (zh) * | 2011-10-19 | 2013-06-19 | 国电科学技术研究院 | 一种能够氧化零价汞的复合型烟气脱硝催化剂 |
CN103232875B (zh) * | 2013-04-24 | 2014-05-28 | 合肥开尔纳米能源科技股份有限公司 | 一种助燃脱硫脱硝的燃煤纳米催化剂及其制备方法 |
CN103252231B (zh) * | 2013-05-02 | 2015-05-06 | 易能(马鞍山)大气治理科技有限公司 | 一种脱硝催化剂及其制备方法 |
CN105457624A (zh) * | 2015-11-17 | 2016-04-06 | 安徽省元琛环保科技有限公司 | 一种复合金属氧化物低温脱硝催化剂及其制备方法 |
CN106824173B (zh) * | 2017-03-01 | 2019-06-11 | 石河子大学 | 一种scr烟气脱硝催化剂及其制备方法 |
CN107511158A (zh) * | 2017-08-31 | 2017-12-26 | 复旦大学 | 低温抗水抗硫的脱硝催化剂及其制备方法和应用 |
CN109876798A (zh) * | 2019-03-12 | 2019-06-14 | 华侨大学 | 一种V-Mn基低温SCR脱硝催化剂及其制备方法 |
-
2020
- 2020-12-30 CN CN202011622993.8A patent/CN112808263B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN112808263A (zh) | 2021-05-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101590404B (zh) | 一种低钒脱硝催化剂及其制备方法和应用 | |
WO2015149499A1 (zh) | 一种低温高效脱硝催化剂及其制备方法 | |
CN111097442B (zh) | 一种烟气协同脱硝脱汞催化剂及其制备方法 | |
CN111530475B (zh) | 一种稀土基中低温脱硝催化剂粉体及其制备方法 | |
CN110773153B (zh) | 一种担载型锰基中低温脱硝催化剂、制备方法及其应用 | |
CN104014331A (zh) | 介孔二氧化钛球负载的Mn-Ce-W复合氧化物脱硝催化剂的制备方法 | |
CN109433254A (zh) | 一种限域分子筛脱硝催化剂及其制备方法 | |
CN105833901A (zh) | 一种PrOx-MnOx/SAPO-34低温SCR烟气脱硝催化剂及其制备方法与应用 | |
CN105233814A (zh) | 一种核壳结构的铈基氧化物催化剂、制备方法及其用途 | |
CN107126949B (zh) | 一种抗砷中毒的scr脱硝催化剂及其制备方法 | |
CN107233895B (zh) | 一种机动车尾气净化用氧化催化剂及其制备方法 | |
CN112808263B (zh) | 一种低so2/so3转化率的脱硝催化剂及其制备方法 | |
CN113578341A (zh) | 一种协同nh3与co的脱硝催化剂的制备方法 | |
CN110639539A (zh) | 一种无毒低温脱硝催化剂及其制作方法 | |
CN113694933A (zh) | 一种高熵共掺杂低温scr脱硝催化剂及其制备方法和应用 | |
CN111068709A (zh) | 一种铁锰催化剂的制备方法 | |
CN106732547B (zh) | 低温氧化燃煤烟气中零价汞的脱汞催化剂及其制备方法 | |
CN103691425A (zh) | 一种铈钨钛复合氧化物脱硝催化剂的制备方法 | |
CN113275008B (zh) | 一种co-scr脱硝催化剂及其制备方法和应用 | |
CN114904540A (zh) | 一种低温锰基催化剂及其制备方法和应用 | |
CN111389419B (zh) | 二氧化铈负载硫酸铁催化剂及其制备方法和应用 | |
CN103769114A (zh) | 一种钒修饰的铁基活性炭催化剂、制备方法及其用途 | |
KR100382051B1 (ko) | 이산화황을 포함하고 있는 배가스 중의 질소산화물을저온에서 제거하기 위한 선택적 환원촉매 | |
CN110833827B (zh) | 高氮气选择性钒基氧化物催化剂及其制备方法 | |
KR20220057376A (ko) | 암모니아의 질소전환용 비백금계 금속 산화물 촉매 및 이를 이용한 암모니아의 질소전환방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |