CN108218454A - A kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function - Google Patents
A kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function Download PDFInfo
- Publication number
- CN108218454A CN108218454A CN201711483086.8A CN201711483086A CN108218454A CN 108218454 A CN108218454 A CN 108218454A CN 201711483086 A CN201711483086 A CN 201711483086A CN 108218454 A CN108218454 A CN 108218454A
- Authority
- CN
- China
- Prior art keywords
- parts
- pug
- drying
- temperature
- low temperature
- 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.)
- Withdrawn
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 47
- 238000009825 accumulation Methods 0.000 title claims abstract description 16
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 15
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 15
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- 238000001354 calcination Methods 0.000 claims abstract description 57
- 239000003054 catalyst Substances 0.000 claims abstract description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000002002 slurry Substances 0.000 claims abstract description 35
- 238000001035 drying Methods 0.000 claims abstract description 33
- 230000032683 aging Effects 0.000 claims abstract description 26
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 26
- 238000001125 extrusion Methods 0.000 claims abstract description 25
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 17
- 229920001577 copolymer Polymers 0.000 claims abstract description 16
- 239000003595 mist Substances 0.000 claims abstract description 13
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 11
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 11
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 11
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 11
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003365 glass fiber Substances 0.000 claims abstract description 11
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims abstract description 11
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims abstract description 11
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims abstract description 11
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims abstract description 11
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 11
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 11
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000008117 stearic acid Substances 0.000 claims abstract description 11
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 11
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 11
- CMPGARWFYBADJI-UHFFFAOYSA-L tungstic acid Chemical compound O[W](O)(=O)=O CMPGARWFYBADJI-UHFFFAOYSA-L 0.000 claims abstract description 10
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010432 diamond Substances 0.000 claims abstract description 9
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 9
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 241000264877 Hippospongia communis Species 0.000 claims description 37
- 238000003756 stirring Methods 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 20
- 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 20
- 230000001404 mediated effect Effects 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 18
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 16
- 239000000908 ammonium hydroxide Substances 0.000 claims description 16
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 15
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 11
- 229910021641 deionized water Inorganic materials 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 10
- 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 10
- 239000007822 coupling agent Substances 0.000 claims description 10
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 10
- 235000013312 flour Nutrition 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 10
- 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 10
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 claims description 10
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 10
- 229920005573 silicon-containing polymer Polymers 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000011787 zinc oxide Substances 0.000 claims description 10
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 9
- 239000004917 carbon fiber Substances 0.000 claims description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 9
- 125000002496 methyl group Chemical class [H]C([H])([H])* 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000009955 starching Methods 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 229910017604 nitric acid Inorganic materials 0.000 claims description 5
- 235000006408 oxalic acid Nutrition 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 229920002223 polystyrene Polymers 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 239000003755 preservative agent Substances 0.000 claims description 5
- 230000002335 preservative effect Effects 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 4
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 2
- 150000001336 alkenes Chemical class 0.000 claims description 2
- 230000009514 concussion Effects 0.000 claims description 2
- 238000002604 ultrasonography Methods 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 238000007598 dipping method Methods 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000010937 tungsten Substances 0.000 claims 1
- 238000005470 impregnation Methods 0.000 abstract description 5
- -1 phthalic acid ester Chemical class 0.000 abstract description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 238000002242 deionisation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005660 chlorination reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- ZZVUWRFHKOJYTH-UHFFFAOYSA-N diphenhydramine Chemical compound C=1C=CC=CC=1C(OCCN(C)C)C1=CC=CC=C1 ZZVUWRFHKOJYTH-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 241001408630 Chloroclystis Species 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- HIVLDXAAFGCOFU-UHFFFAOYSA-N ammonium hydrosulfide Chemical compound [NH4+].[SH-] HIVLDXAAFGCOFU-UHFFFAOYSA-N 0.000 description 1
- 230000001458 anti-acid effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 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
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen 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
- B01D53/86—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
- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/24—Nitrogen compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/5607—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides
- C04B35/5611—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides based on titanium carbides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
- C04B35/80—Fibres, filaments, whiskers, platelets, or the like
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/067—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5051—Niobium oxides or niobates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3241—Chromium oxides, chromates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3258—Tungsten oxides, tungstates, or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
- C04B2235/3873—Silicon nitrides, e.g. silicon carbonitride, silicon oxynitride
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a kind of low temperature rare earth composite honeycomb ceramic bodies for having both denitration heat accumulation function, belong to catalysis technical field；The denitrating catalyst is mainly by following components：TiC35~40 part, 25~35 parts of plate diamond spar aggregate, 5~10 parts of tungstic acid, SiO25~8 parts, 8~12 parts of chrome oxide green micro mist, 2~3 parts of glass fibre, 2~4 parts of silicon nitride, 3~6 parts of haloflex, methyl methacrylate -3~5 parts of butadiene-styrene copolymer, 10~12 parts of hydroxypropyl methyl cellulose, 2~3 parts of phthalic acid ester, 2~3 parts of monoethanolamine, 1~3 part of stearic acid mediate by pug, aging, extrusion molding, drying and calcining, impregnation catalyst slurry, drying is prepared with calcination process again.
Description
Technical field
The present invention relates to a kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function, the present invention is prepared de-
Denox catalyst has good mechanical strength, antiacid corrosive power, thermal shock resistance, is adaptable to coal-burning boiler, fired power generating unit
Air preheater in, the original paper that exchanges heat in air preheater to be replaced to examine and step on steel, have both good heat exchange property, denitration activity and wider temperature
Spend window.
Background technology
In recent years, the energy and associated environment become the hot spot that whole world various countries are paid close attention to the most.China is due to per capita
Energy resources shortage, environmental carrying capacity is limited, ecology fragility, by the great sustainable development for restricting China.Domestic GDP is annual
High speed development, the hurried increase of energy consumption, environment, ecology are worsening.It is energy-saving to become the big master for solving energy problem
Offense to.According to statistics, domestic industrial department energy-output ratio accounts for the 70% of national energy total amount.Wherein Industrial Stoves are China
Big power consumer accounts for about the 25% of national total energy consumption, and low energy utilization rate is that industrial furnace is caused to consume energy one of the main reason for big.
Compared with the industrial furnace of developed country, the domestic Industrial Stoves thermal efficiency that is averaged wants low 20% or so, the energy of waste
Source is equivalent to 200,000,000 tons of standard coals, it is seen that Industrial Stoves energy-saving potential is very huge.
The original paper material that exchanges heat used in the air preheater in Industrial Stoves at present steps on steel to examine, and examines and steps on steel with machinery
The advantages that intensity is high, cracky, heat exchange rate be not fast, thermal capacitance is big, but in use, examine step on steel surface enamel it is easily de-
It falls, the sulfuric acid corrosion formed by ammonium hydrogen sulfate or moisture condensation is very easy to after the naked leakage of steel, especially national coal-burning power plant is complete
Implement after minimum discharge in face.For the nitrous oxides concentration after denitration process is made to reach minimum discharge standard, at present, the drop of mainstream
Low NOx drainage method is to increase by one layer of catalyst, system resistance, air preheater resistance can be caused to improve in this way, SO2To SO3
Conversion ratio rise, aerosol discharge increase, cause the escaping of ammonia increase, corrosion and clogging increase etc..
In use, heat exchange element slowly rotates air preheater, and the higher flue gas of temperature and cold air alternately flow
Through heat exchange element, periodically exchanged heat.In a heat-exchange periodic, the Temperature cycling variation of heat exchange element is selected dilute
Earth elements Ce, La have wider denitration activity temperature range as active component.
Traditional vanadium titanium system denitrating catalyst, active temperature windows are relatively narrow（320~400 DEG C）, easily by SO in operational process2
Poisoning, activity is relatively low under low temperature, and is also easy to produce sulphur ammonium, and blocking catalyst hole and air preheater and upstream device cause system pressure drop
It is larger, increase the unfavorable factors such as the electric cost of air-introduced machine.
And existing rare-earth-based catalyst does not have heat accumulation function, and wears no resistance, and active temperature low value is high, intensity
Low, service life is short；So that application range is greatly limited to, therefore, we there is an urgent need to study a kind of new catalyst, with
Substitute the said goods.
Invention content
The present invention provides a kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function, to solve above-mentioned technology
Problem.
In order to solve the above technical problems, the present invention program the technical solution adopted is that：A kind of denitration heat accumulation function of having both
Low temperature rare earth composite honeycomb ceramic body, it is characterised in that the denitrating catalyst is mainly by following components：TiC35~40 part, plate
25~35 parts of corundum aggregate, 5~10 parts of tungstic acid, SiO25~8 parts, 8~12 parts of chrome oxide green micro mist, glass fibre 2~3
Part, 2~4 parts of silicon nitride, 3~6 parts of haloflex, methyl methacrylate-butadiene-styrene copolymer 3~5
Part, 10~12 parts of hydroxypropyl methyl cellulose, 2~3 parts of monoethanolamine, 1~3 part of stearic acid are mediated by pug, aging, are squeezed out
It is molded, dry and calcining, impregnation catalyst slurry, drying is prepared with calcination process again.
The catalysis slurry is composed of the following components：12~15 parts of ferric nitrate, 12~15 parts of manganese nitrate, niobium pentaoxide 8
~12 parts, methyl methacrylate -5~10 parts of butadiene-styrene copolymer, dimethyl silicone polymer 0.5~2
Part, 6~10 parts of carbon fiber；3~5 parts of alumina powder, 3~6 parts of silica flour, 3~4 parts of zinc oxide, 5~8 parts of cerous nitrate, lanthanum nitrate
5~6 parts, 3 parts of titanate coupling agent.
A kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function, preparation method include the following steps：
（1）Pug is mediated：
i）Weigh TiC, plate diamond spar aggregate, tungstic acid, SiO2, chrome oxide green micro mist, stearic acid, monoethanolamine, methyl-prop
E pioic acid methyl ester-butadiene-styrene copolymer powder mixing, adds in deionized water and 20% ammonium hydroxide, wherein deionization
Water：Powder weight ratio is 1：（0.4~0.6）, 20min or so is mediated in stirring, by deionized water, the ammonia of mediating and adjust addition
Water adjusts pug index, and pug is mediated（i）Pug moisture target value 38~45%, pH desired values 7.8~9.4；
ii）It adds 0.5~1.5 part of 20% ammonium hydroxide, cover stirring machine cap, be heated to 95 DEG C or more while stirring, then beat
Head cover is opened, pug moisture to pug is concentrated by evaporation and is in granular form, the pug moisture target value 25~28%, pH desired values 7.8~
8.5；
iii）Add glass fibre successively while stirring, silicon nitride adds 20% ammonium hydroxide, stirring 15min or so, the pug water
Subhead scale value 29~34%, pH desired values 8.1~9.2；
iv）Haloflex, hydroxypropyl methyl cellulose are added successively, stir more than 10min, the pug moisture target value 28
~32%, pH desired value 8.1~9.0；
（2）It is aging：The pug that will be kneaded, is sealed with preservative film, aging, aging 3-4h；
（3）Pre-filtering squeezes out：By aging good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity is filtered
It is extruded into mud item；
（4）Molding squeezes out：Extrusion molding is carried out on vacuum-extruder of the front end equipped with SCR molding dies, it is wet to obtain catalyst
Base；
（5）Drying-calcining：By step（4）The obtained wet base of catalyst, is transferred on aluminium alloy pallet, with the glass with heat-preservation cotton
The box cover of glass steel material packages, drying temperature be 90 DEG C, arid cycle 5h；Dried catalyst blank is sent into calcining furnace
It is calcined, 1380 DEG C of calcination temperature, in calcination process, control temperature is incremented by by 100 DEG C/h of gradients, forged from 100 DEG C
The burning time is 18~22h, obtains ceramic honey comb green body, with 30% nitric acid cleaning ceramic green body of volumetric concentration, is dried for standby；
（6）Starching：It is common to weigh ferric nitrate, manganese nitrate, niobium pentaoxide, methyl methacrylate-butadiene-polystyrene ternary
Polymers, dimethyl silicone polymer, carbon fiber, alumina powder, silica flour, zinc oxide, cerous nitrate, lanthanum nitrate, titanate coupling agent,
The aqueous solution containing 1.2~3.5 parts of oxalic acid is dissolved at 70~95 DEG C, slurries are than 1:3, add and be warming up to 80 DEG C and keep the temperature, with ultrasound
Wave concussion stirring 1~2 hour, is made catalysis slurry；Step 5 gained ceramic honey comb green body is put into catalysis slurry pool, is wrapped
Drying oven is put into after catalysis slurry, drying temperature is 70 DEG C, 20~30 minutes arid cycles, is struck off on the outside of ceramic honey comb green body
Catalysis slurry and after cleaning out, is reentered into drying oven, and drying temperature is 90 DEG C, arid cycle 1h；
（7）Drying-calcining：By step（6）Obtained ceramic honey comb green body is sent into calcining furnace and is calcined, calcination temperature 550
DEG C, in calcination process, control temperature is incremented by from 100 DEG C by 100 DEG C/h of gradients, and calcination time is 7~9h, obtains low temperature
Honeycomb ceramic body.
Preferably, the step（3）Pre-filtering squeezes out, and strainer uses mesh specification as 1.0x4mm's or 0.8x3mm
Stainless steel filtering net.
Preferably, the step（4）Molding squeezes out, and extruder control condition is extrusion pressure 7MPa, extrusion temperature ＜
35 DEG C, vacuum degree -0.094MPa or so.
The invention has the advantages that：Denitration rate of the present invention in the environment of low temperature is high, and reaction condition is mild, to ring
Border is without any pollution.The present invention first passes through 1380 DEG C of high-temperature firing ceramic honey comb idiosomes, then by ceramic honey comb green body starching, finally
It is fired by 500~600 DEG C.The present invention improves the anti-caking power of catalyst, is conducive to improve catalyst thermal stability；It can
Be adapted to coal-burning boiler, fired power generating unit air preheater in；Plate diamond spar aggregate can obviously reduce the cost of catalyst, meanwhile, by
It is axial heat conduction in integral catalyzer, using the heat accumulation function of plate diamond spar aggregate honeycomb ceramic carrier, improves catalyst
The uniformity of temperature improves catalytic performance.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully in embodiment below.But the present invention can
To realize in different forms, however it is not limited to embodiment described herein.Opposite, the purpose for providing these embodiments is
Make to the disclosure more thorough and comprehensive.
Embodiment 1
A kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function is mainly by following components：TiC35 parts, plate it is firm
Beautiful 25 parts of aggregate, 5 parts of tungstic acid, SiO28 parts, 8 parts of chrome oxide green micro mist, 2 parts of glass fibre, 4 parts of silicon nitride, chlorinated polyethylene
3 parts of alkene, methyl methacrylate -5 parts of butadiene-styrene copolymer, 10 parts of hydroxypropyl methyl cellulose, monoethanol
2 parts of amine, 3 parts of stearic acid are mediated by pugs, aging, extrusion molding, drying and calcining, impregnation catalyst slurry, again it is dry with
Calcination process is prepared.
The catalysis slurry is made of following components：12 parts of ferric nitrate, 15 parts of manganese nitrate, 8 parts of niobium pentaoxide, methyl-prop
E pioic acid methyl ester -5 parts of butadiene-styrene copolymer, 2 parts of dimethyl silicone polymer, 10 parts of carbon fiber, alumina powder
5 parts, 3 parts of silica flour, 3 parts of zinc oxide, 5 parts of cerous nitrate, 5 parts of lanthanum nitrate, 5 parts of titanate coupling agent.
Preparation method includes the following steps：
（1）Pug is mediated：
i）Weigh TiC, plate diamond spar aggregate, tungstic acid, SiO2, chrome oxide green micro mist, stearic acid, monoethanolamine, methyl-prop
E pioic acid methyl ester-butadiene-styrene copolymer powder mixing, adds in deionized water and 20% ammonium hydroxide, wherein deionization
Water：Powder weight ratio is 1：（0.4~0.6）, 20min or so is mediated in stirring, by deionized water, the ammonia of mediating and adjust addition
Water adjusts pug index, and pug is mediated（i）Pug moisture target value 38~45%, pH desired values 7.8~9.4；
ii）It adds 0.5 part of 20% ammonium hydroxide, cover stirring machine cap, be heated to 95 DEG C or more while stirring, then open top
Lid is concentrated by evaporation pug moisture to pug and is in granular form, the pug moisture target value 25~28%, pH desired values 7.8~8.5；
iii）Add glass fibre successively while stirring, silicon nitride adds 20% ammonium hydroxide, stirring 15min or so, the pug water
Subhead scale value 29~34%, pH desired values 8.1~9.2；
iv）Haloflex, hydroxypropyl methyl cellulose are added successively, stir more than 10min, the pug moisture target value 28
~32%, pH desired value 8.1~9.0；
（2）It is aging：The pug that will be kneaded, is sealed with preservative film, aging, aging 4h；
（3）Pre-filtering squeezes out：By aging good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity, strainer
Stainless steel filtering net of the mesh specification for 1.0x4mm or 0.8x3mm is used, filtering is extruded into mud item；
（4）Molding squeezes out：Extrusion molding, extruder control strip are carried out on vacuum-extruder of the front end equipped with SCR molding dies
Part is extrusion pressure 7MPa, and 35 DEG C, vacuum degree -0.094MPa or so of extrusion temperature ＜ obtains the wet base of catalyst；
（5）Drying-calcining：By step（4）The obtained wet base of catalyst, is transferred on aluminium alloy pallet, with the glass with heat-preservation cotton
The box cover of glass steel material packages, drying temperature be 90 DEG C, arid cycle 5h；Dried catalyst blank is sent into calcining furnace
It is calcined, 1380 DEG C of calcination temperature, in calcination process, control temperature is incremented by by 100 DEG C/h of gradients, forged from 100 DEG C
The burning time is 18h, obtains ceramic honey comb green body, with 30% nitric acid cleaning ceramic green body of volumetric concentration, is dried for standby；
（6）Starching：It is common to weigh ferric nitrate, manganese nitrate, niobium pentaoxide, methyl methacrylate-butadiene-polystyrene ternary
Polymers, dimethyl silicone polymer, carbon fiber, alumina powder, silica flour, zinc oxide, cerous nitrate, lanthanum nitrate, titanate coupling agent,
The aqueous solution containing 1.2 parts of oxalic acid is dissolved at 70 DEG C, slurries are than 1:3, add and be warming up to 80 DEG C and keep the temperature, stirred with ultrasonic oscillation
1 hour, catalysis slurry is made；Step 5 gained ceramic honey comb green body is put into catalysis slurry pool, is put into after wrapping catalysis slurry
Drying oven, drying temperature are 70 DEG C, strike off the catalysis slurry on the outside of ceramic honey comb green body and clear up 20~30 minutes arid cycles
After clean, be reentered into drying oven, drying temperature is 90 DEG C, arid cycle 1h；
（7）Drying-calcining：By step（6）Obtained ceramic honey comb green body is sent into calcining furnace and is calcined, calcination temperature 550
DEG C, in calcination process, control temperature is incremented by, calcination time 9h obtains low temperature bee from 100 DEG C by 100 DEG C/h of gradients
Nest ceramic body.Products obtained therefrom geometric dimension is 150x150x（500~1250）Mm, aperture be 5~8mm, interior wall thickness 0.7~
1.2mm, geometry specific surface area are 360~700m2/m3。
Embodiment 2
A kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function is mainly by following components：TiC38 parts, plate it is firm
Beautiful 30 parts of aggregate, 7 parts of tungstic acid, SiO26 parts, 10 parts of chrome oxide green micro mist, 3 parts of glass fibre, 3 parts of silicon nitride, chlorination gather
5 parts of ethylene, methyl methacrylate -4 parts of butadiene-styrene copolymer, 11 parts of hydroxypropyl methyl cellulose, Dan Yi
3 parts of hydramine, 2 parts of stearic acid are mediated by pug, and aging, extrusion molding, drying and calcining, are dried impregnation catalyst slurry again
It is prepared with calcination process.
The catalysis slurry consists of the following compositions：14 parts of ferric nitrate, 14 parts of manganese nitrate, 10 parts of niobium pentaoxide, methyl
Methyl acrylate -8 parts of butadiene-styrene copolymer, 1.3 parts of dimethyl silicone polymer, 7 parts of carbon fiber, aluminium oxide
4 parts of micro mist, 5 parts of silica flour, 4 parts of zinc oxide, 6 parts of cerous nitrate, 5 parts of lanthanum nitrate, 5 parts of titanate coupling agent.
Preparation method includes the following steps：
（1）Pug is mediated：
i）Weigh TiC, plate diamond spar aggregate, tungstic acid, SiO2, chrome oxide green micro mist, stearic acid, monoethanolamine, methyl-prop
E pioic acid methyl ester-butadiene-styrene copolymer powder mixing, adds in deionized water and 20% ammonium hydroxide, wherein deionization
Water：Powder weight ratio is 1：（0.4~0.6）, 20min or so is mediated in stirring, by deionized water, the ammonia of mediating and adjust addition
Water adjusts pug index, and pug is mediated（i）Pug moisture target value 38~45%, pH desired values 7.8~9.4；
ii）It adds 1 part of 20% ammonium hydroxide, cover stirring machine cap, be heated to 95 DEG C or more while stirring, then open head cover,
It is concentrated by evaporation pug moisture to pug to be in granular form, the pug moisture target value 25~28%, pH desired values 7.8~8.5；
iii）Add glass fibre, silicon nitride, 20% ammonium hydroxide of addition, stirring 15min or so, the pug water successively while stirring
Subhead scale value 29~34%, pH desired values 8.1~9.2；
iv）Haloflex, hydroxypropyl methyl cellulose, stirring more than 10min, the pug moisture target value 28 are added successively
~32%, pH desired value 8.1~9.0；
（2）It is aging：The pug that will be kneaded, is sealed with preservative film, aging, aging 3h；
（3）Pre-filtering squeezes out：By aging good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity, strainer
Stainless steel filtering net of the mesh specification for 1.0x4mm or 0.8x3mm is used, filtering is extruded into mud item；
（4）Molding squeezes out：Extrusion molding, extruder control strip are carried out on vacuum-extruder of the front end equipped with SCR molding dies
Part is extrusion pressure 7MPa, and 35 DEG C, vacuum degree -0.094MPa or so of extrusion temperature ＜ obtains the wet base of catalyst；
（5）Drying-calcining：By step（4）The obtained wet base of catalyst, is transferred on aluminium alloy pallet, with the glass with heat-preservation cotton
The box cover of glass steel material packages, drying temperature be 90 DEG C, arid cycle 5h；Dried catalyst blank is sent into calcining furnace
It is calcined, 1380 DEG C of calcination temperature, in calcination process, control temperature is incremented by by 100 DEG C/h of gradients, forged from 100 DEG C
The burning time is 21h, obtains ceramic honey comb green body, with 30% nitric acid cleaning ceramic green body of volumetric concentration, is dried for standby；
（6）Starching：It is common to weigh ferric nitrate, manganese nitrate, niobium pentaoxide, methyl methacrylate-butadiene-polystyrene ternary
Polymers, dimethyl silicone polymer, carbon fiber, alumina powder, silica flour, zinc oxide, cerous nitrate, lanthanum nitrate, titanate coupling agent,
The aqueous solution containing 2.2 parts of oxalic acid is dissolved at 85 DEG C, slurries are than 1:3, add and be warming up to 80 DEG C and keep the temperature, stirred with ultrasonic oscillation
1.5 hours, catalysis slurry is made；Step 5 gained ceramic honey comb green body is put into catalysis slurry pool, is put after wrapping catalysis slurry
Enter drying oven, drying temperature is 70 DEG C, 20~30 minutes arid cycles, strikes off catalysis slurry on the outside of ceramic honey comb green body and clear
After reason is clean, be reentered into drying oven, drying temperature is 90 DEG C, arid cycle 1h；
（7）Drying-calcining：By step（6）Obtained ceramic honey comb green body is sent into calcining furnace and is calcined, calcination temperature 550
DEG C, in calcination process, control temperature is incremented by, calcination time 8h obtains low temperature bee from 100 DEG C by 100 DEG C/h of gradients
Nest ceramic body.Products obtained therefrom geometric dimension is 150x150x（500~1250）Mm, aperture be 5~8mm, interior wall thickness 0.7~
1.2mm, geometry specific surface area are 360~700m2/m3。
Embodiment 3
A kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function is mainly by following components：TiC40 parts, plate it is firm
Beautiful 35 parts of aggregate, 10 parts of tungstic acid, SiO25 parts, 12 parts of chrome oxide green micro mist, 3 parts of glass fibre, 2 parts of silicon nitride, chlorination gather
6 parts of ethylene, methyl methacrylate -3 parts of butadiene-styrene copolymer, 12 parts of hydroxypropyl methyl cellulose, Dan Yi
2 parts of hydramine, 1 part of stearic acid are mediated by pug, and aging, extrusion molding, drying and calcining, are dried impregnation catalyst slurry again
It is prepared with calcination process.
The catalysis slurry consists of the following compositions：15 parts of ferric nitrate, 15 parts of manganese nitrate, 12 parts of niobium pentaoxide, methyl
Methyl acrylate -10 parts of butadiene-styrene copolymer, 0.5 part of dimethyl silicone polymer, 6 parts of carbon fiber, aluminium oxide
3 parts of micro mist, 6 parts of silica flour, 3 parts of zinc oxide, 8 parts of cerous nitrate, 6 parts of lanthanum nitrate, 5 parts of titanate coupling agent.
（1）Pug is mediated：
i）Weigh TiC4, plate diamond spar aggregate, tungstic acid 1, SiO2, chrome oxide green micro mist 1, stearic acid, monoethanolamine, methyl
Methyl acrylate-butadiene-styrene copolymer powder mixing, adds in deionized water and 20% ammonium hydroxide, wherein deionization
Water：Powder weight ratio is 1：（0.4~0.6）, 20min or so is mediated in stirring, by deionized water, the ammonia of mediating and adjust addition
Water adjusts pug index, and pug is mediated（i）Pug moisture target value 38~45%, pH desired values 7.8~9.4；
ii）It adds 1.5 parts of 20% ammonium hydroxide, cover stirring machine cap, be heated to 95 DEG C or more while stirring, then open top
Lid is concentrated by evaporation pug moisture to pug and is in granular form, the pug moisture target value 25~28%, pH desired values 7.8~8.5；
iii）Add glass fibre, silicon nitride, 20% ammonium hydroxide of addition, stirring 15min or so, the pug water successively while stirring
Subhead scale value 29~34%, pH desired values 8.1~9.2；
iv）Haloflex, hydroxypropyl methyl cellulose, stirring more than 10min, the pug moisture target value 28 are added successively
~32%, pH desired value 8.1~9.0；
（2）It is aging：The pug that will be kneaded, is sealed with preservative film, aging, aging 3h；
（3）Pre-filtering squeezes out：By aging good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity, strainer
Stainless steel filtering net of the mesh specification for 1.0x4mm or 0.8x3mm is used, filtering is extruded into mud item；
（4）Molding squeezes out：Extrusion molding, extruder control strip are carried out on vacuum-extruder of the front end equipped with SCR molding dies
Part is extrusion pressure 7MPa, and 35 DEG C, vacuum degree -0.094MPa or so of extrusion temperature ＜ obtains the wet base of catalyst；
（5）Drying-calcining：By step（4）The obtained wet base of catalyst, is transferred on aluminium alloy pallet, with the glass with heat-preservation cotton
The box cover of glass steel material packages, drying temperature be 90 DEG C, arid cycle 5h；Dried catalyst blank is sent into calcining furnace
It is calcined, 1380 DEG C of calcination temperature, in calcination process, control temperature is incremented by by 100 DEG C/h of gradients, forged from 100 DEG C
The burning time is 22h, obtains ceramic honey comb green body, with 30% nitric acid cleaning ceramic green body of volumetric concentration, is dried for standby；
（6）Starching：It is common to weigh ferric nitrate, manganese nitrate, niobium pentaoxide, methyl methacrylate-butadiene-polystyrene ternary
Polymers, dimethyl silicone polymer, carbon fiber, alumina powder, silica flour, zinc oxide, cerous nitrate, lanthanum nitrate, titanate coupling agent,
The aqueous solution containing 1.2~3.5 parts of oxalic acid is dissolved at 95 DEG C, slurries are than 1:3, add and be warming up to 80 DEG C and keep the temperature, shaken with ultrasonic wave
Stirring 2 hours is swung, catalysis slurry is made；Step 5 gained ceramic honey comb green body is put into catalysis slurry pool, wraps catalysis slurry
After be put into drying oven, drying temperature is 70 DEG C, strikes off the catalysis slurry on the outside of ceramic honey comb green body 20~30 minutes arid cycles
And after cleaning out, be reentered into drying oven, drying temperature is 90 DEG C, arid cycle 1h；
（7）Drying-calcining：By step（6）Obtained ceramic honey comb green body is sent into calcining furnace and is calcined, calcination temperature 550
DEG C, in calcination process, control temperature is incremented by, calcination time 7h obtains low temperature bee from 100 DEG C by 100 DEG C/h of gradients
Nest ceramic body.Products obtained therefrom geometric dimension is 150x150x（500~1250）Mm, aperture be 5~8mm, interior wall thickness 0.7~
1.2mm, geometry specific surface area are 360~700m2/m3。
1-3 of embodiment of the present invention products obtained therefroms and other Products commercially are compared, obtain with
Lower Testing index：
After tested, the compression strength of catalyst of the present invention is axially 70~76MPa, wear-resistant 3.8~4.0cm3, catalyst
Service life had higher intensity and thermal conductivity factor, therefore with extensive society and economic value in 7 ~ 8 years.
Embodiment of the present invention is only the description carried out to the preferred embodiment of the present invention, not to the present invention
Conception and scope is defined, and under the premise of not departing from the present invention relates to thought, engineers and technicians are to this hair in this field
The various modifications and improvement that bright technical solution is made, should all fall into protection scope of the present invention.
Claims (4)
1. a kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function, it is characterised in that the denitrating catalyst is main
By following components：The denitrating catalyst is mainly by following components：TiC35~40 part, 25~35 parts of plate diamond spar aggregate, three oxidations
5~10 parts of tungsten, SiO25~8 parts, 8~12 parts of chrome oxide green micro mist, 2~3 parts of glass fibre, 2~4 parts of silicon nitride, chlorinated polyethylene
3~6 parts of alkene, methyl methacrylate -3~5 parts of butadiene-styrene copolymer, hydroxypropyl methyl cellulose 10~
12 parts, 2~3 parts of monoethanolamine, 1~3 part of stearic acid mediated by pug, aging, extrusion molding, drying and calcining, dipping are urged
Slurrying material, drying is prepared with calcination process again；
The catalysis slurry is composed of the following components：12~15 parts of ferric nitrate, 12~15 parts of manganese nitrate, niobium pentaoxide 8~12
Part, methyl methacrylate -5~10 parts of butadiene-styrene copolymer, 0.5~2 part of dimethyl silicone polymer, carbon
6~10 parts of fiber；3~5 parts of alumina powder, 3~6 parts of silica flour, 3~4 parts of zinc oxide, 5~8 parts of cerous nitrate, lanthanum nitrate 5~6
Part, 4~5 parts of titanate coupling agent.
2. a kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function according to claim 1, feature
It is that preparation method includes the following steps：
（1）Pug is mediated：
i）Weigh TiC, plate diamond spar aggregate, tungstic acid, SiO2, chrome oxide green micro mist, stearic acid, monoethanolamine, metering system
Sour methyl esters-butadiene-styrene copolymer powder mixing, adds in deionized water and 20% ammonium hydroxide, wherein deionized water：
Powder weight ratio is 1：（0.4~0.6）, 20min or so is mediated in stirring, by deionized water, the ammonium hydroxide of mediating and adjust addition
Pug index is adjusted, pug is mediated（i）Pug moisture target value 38~45%, pH desired values 7.8~9.4；
ii）It adds 0.5~1.5 part of 20% ammonium hydroxide, cover stirring machine cap, be heated to 95 DEG C or more while stirring, then beat
Head cover is opened, pug moisture to pug is concentrated by evaporation and is in granular form, the pug moisture target value 25~28%, pH desired values 7.8~
8.5；
iii）Add glass fibre successively while stirring, silicon nitride adds 20% ammonium hydroxide, stirring 15min or so, the pug water
Subhead scale value 29~34%, pH desired values 8.1~9.2；
iv）Haloflex, hydroxypropyl methyl cellulose are added successively, stir more than 10min, the pug moisture target value 28
~32%, pH desired value 8.1~9.0；
（2）It is aging：The pug that will be kneaded, is sealed with preservative film, aging, aging 3-4h；
（3）Pre-filtering squeezes out：By aging good pug, on pre-filtering extruder, extrusion force 1700~2200N of plasticity is filtered
It is extruded into mud item；
（4）Molding squeezes out：Extrusion molding is carried out on vacuum-extruder of the front end equipped with SCR molding dies, it is wet to obtain catalyst
Base；
（5）Drying-calcining：By step（4）The obtained wet base of catalyst, is transferred on aluminium alloy pallet, with the glass with heat-preservation cotton
The box cover of glass steel material packages, drying temperature be 90 DEG C, arid cycle 5h；Dried catalyst blank is sent into calcining furnace
It is calcined, 1380 DEG C of calcination temperature, in calcination process, control temperature is incremented by by 100 DEG C/h of gradients, forged from 100 DEG C
The burning time is 18~22h, obtains ceramic honey comb green body, with 30% nitric acid cleaning ceramic green body of volumetric concentration, is dried for standby；
（6）Starching：It is common to weigh ferric nitrate, manganese nitrate, niobium pentaoxide, methyl methacrylate-butadiene-polystyrene ternary
Polymers, dimethyl silicone polymer, carbon fiber, alumina powder, silica flour, zinc oxide, cerous nitrate, lanthanum nitrate, titanate coupling agent,
The aqueous solution containing 1.2~3.5 parts of oxalic acid is dissolved at 70~95 DEG C, slurries are than 1:3, add and be warming up to 80 DEG C and keep the temperature, with ultrasound
Wave concussion stirring 1~2 hour, is made catalysis slurry；Step 5 gained ceramic honey comb green body is put into catalysis slurry pool, is wrapped
Drying oven is put into after catalysis slurry, drying temperature is 70 DEG C, 20~30 minutes arid cycles, is struck off on the outside of ceramic honey comb green body
Catalysis slurry and after cleaning out, is reentered into drying oven, and drying temperature is 90 DEG C, arid cycle 1h；
（7）Drying-calcining：By step（6）Obtained ceramic honey comb green body is sent into calcining furnace and is calcined, calcination temperature 550
DEG C, in calcination process, control temperature is incremented by from 100 DEG C by 100 DEG C/h of gradients, and calcination time is 7~9h, obtains low temperature
Honeycomb ceramic body.
3. a kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function according to claim 2, feature
It is：Step（3）Pre-filtering squeezes out, and strainer uses stainless steel filtering net of the mesh specification for 1.0x4mm or 0.8x3mm.
4. a kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function according to claim 2, feature
It is：Step（4）Molding squeezes out, and extruder control condition is extrusion pressure 7MPa, 35 DEG C of extrusion temperature ＜, and vacuum degree-
0.094MPa or so.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483086.8A CN108218454A (en) | 2017-12-29 | 2017-12-29 | A kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483086.8A CN108218454A (en) | 2017-12-29 | 2017-12-29 | A kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108218454A true CN108218454A (en) | 2018-06-29 |
Family
ID=62646239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711483086.8A Withdrawn CN108218454A (en) | 2017-12-29 | 2017-12-29 | A kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108218454A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022622A (en) * | 2019-05-16 | 2019-07-16 | 厦门蜂涛陶瓷有限公司 | A kind of cellular alumina ceramic heating element and preparation method thereof |
| CN112121816A (en) * | 2020-10-23 | 2020-12-25 | 湖北群有长物环保科技有限公司 | Low-temperature catalyst special for waste incineration |
| CN112958127A (en) * | 2021-02-26 | 2021-06-15 | 上海大学材料基因组工程(萍乡)研究院 | Method for loading catalyst on ceramic fiber |
| CN113045334A (en) * | 2021-04-14 | 2021-06-29 | 乌鲁木齐胜达天利建材科技有限公司 | Preparation method of fly ash and slag foamed ceramic |
-
2017
- 2017-12-29 CN CN201711483086.8A patent/CN108218454A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110022622A (en) * | 2019-05-16 | 2019-07-16 | 厦门蜂涛陶瓷有限公司 | A kind of cellular alumina ceramic heating element and preparation method thereof |
| CN112121816A (en) * | 2020-10-23 | 2020-12-25 | 湖北群有长物环保科技有限公司 | Low-temperature catalyst special for waste incineration |
| CN112958127A (en) * | 2021-02-26 | 2021-06-15 | 上海大学材料基因组工程(萍乡)研究院 | Method for loading catalyst on ceramic fiber |
| CN113045334A (en) * | 2021-04-14 | 2021-06-29 | 乌鲁木齐胜达天利建材科技有限公司 | Preparation method of fly ash and slag foamed ceramic |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108218454A (en) | A kind of low temperature rare earth composite honeycomb ceramic body for having both denitration heat accumulation function | |
| CN108249896A (en) | A kind of low-temperature denitration accumulation of heat integration catalytic type Extruded Monolithic Celluar Ceramics | |
| CN110354843B (en) | Thin-wall honeycomb type low-temperature sulfur-resistant SCR denitration catalyst and preparation method thereof | |
| CN104741114B (en) | A kind of flat high temperature SCR denitration and preparation method thereof | |
| CN105032464B (en) | Carbonitride metatitanic acid nickel composite material and preparation method and application | |
| CN107837817A (en) | A kind of carbon point/carbonitride/composite titania material and its preparation method and application | |
| CN102728346B (en) | MnO2-TiO2 carbon nanotube-porous inorganic ceramic membrane low-temperature catalytic denitrification self-cleaning material and preparation method thereof | |
| CN103801325A (en) | Co-precipitation preparation method of composite oxide denitration catalyst | |
| CN108160087A (en) | A kind of alkali resistant metal poisoning SCR denitration and preparation method thereof | |
| CN114832829B (en) | A high-temperature denitrification catalyst for gas exhaust gas and its preparation method | |
| CN103638921B (en) | Vanadium-tungsten denitration catalyst and preparation method thereof | |
| CN103301831A (en) | Catalyst for removing nitrogen oxide in emission exhaust and preparation method thereof | |
| CN107376957B (en) | Preparation method and application of red phosphorus-coated titanium dioxide nanofiber photocatalytic material | |
| CN103657673B (en) | Preparation method for integral type denitrification catalyst with three-dimensional network structure | |
| CN107824197A (en) | A kind of honeycomb type denitrification catalyst and preparation method thereof | |
| CN108341665A (en) | A kind of low-temperature catalyzed denitration of rare-earth-based, accumulation of heat one composite ceramic material | |
| CN107857599A (en) | A kind of medium temperature denitration catalyst type nanometer accumulation of heat ceramic honey comb | |
| CN102166515A (en) | Honeycomb wire mesh catalyst for stationary source tail gas denitration and preparation thereof | |
| CN108191444A (en) | A kind of medium temperature denitration, accumulation of heat integration rare earth composite ceramic material | |
| CN103406124A (en) | Ternary composite oxide type selective catalytic reduction catalyst for lean burn engines | |
| CN107986751A (en) | A kind of kaolinite soil property medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb | |
| CN107935568A (en) | A kind of accumulation of heat honeycomb ceramic body of composite high-strength low temperature rare earth denitration catalyst material | |
| CN110639586A (en) | A flower-like g-C3N4/g-C3N4/BiOBr ternary heterojunction photocatalytic material and preparation method thereof | |
| CN107986766A (en) | A kind of thermal storage ceramic body of composite medium-temperature rare earth denitration ceramic material | |
| CN107986762A (en) | A kind of high intensity medium temperature rare earth denitration catalyst formulation accumulation of heat ceramic honey comb |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180629 |
|
| WW01 | Invention patent application withdrawn after publication |