CN108435244B - 一种提高十六烷值加氢改质催化剂、制备方法及其应用 - Google Patents
一种提高十六烷值加氢改质催化剂、制备方法及其应用 Download PDFInfo
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- CN108435244B CN108435244B CN201810230870.6A CN201810230870A CN108435244B CN 108435244 B CN108435244 B CN 108435244B CN 201810230870 A CN201810230870 A CN 201810230870A CN 108435244 B CN108435244 B CN 108435244B
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- sapo
- catalyst
- beta
- solution
- amorphous silica
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- 239000003054 catalyst Substances 0.000 title claims abstract description 61
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 39
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 title claims abstract description 23
- 238000012986 modification Methods 0.000 title claims abstract description 13
- 230000004048 modification Effects 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000011959 amorphous silica alumina Substances 0.000 claims abstract description 42
- 239000002131 composite material Substances 0.000 claims abstract description 37
- 239000002283 diesel fuel Substances 0.000 claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 27
- 239000011148 porous material Substances 0.000 claims abstract 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 abstract description 10
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 9
- -1 VIB group metals Chemical class 0.000 claims abstract description 3
- 150000002739 metals Chemical class 0.000 claims abstract description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 3
- 229910003158 γ-Al2O3 Inorganic materials 0.000 claims abstract description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 45
- 239000002808 molecular sieve Substances 0.000 claims description 41
- 239000000243 solution Substances 0.000 claims description 40
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 37
- 238000001035 drying Methods 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 24
- 239000011259 mixed solution Substances 0.000 claims description 24
- 239000000047 product Substances 0.000 claims description 20
- 239000008367 deionised water Substances 0.000 claims description 19
- 229910021641 deionized water Inorganic materials 0.000 claims description 19
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 18
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 18
- 230000032683 aging Effects 0.000 claims description 16
- 238000001723 curing Methods 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 239000012065 filter cake Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 10
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims description 10
- 238000005470 impregnation Methods 0.000 claims description 9
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- 230000007062 hydrolysis Effects 0.000 claims description 8
- 238000006460 hydrolysis reaction Methods 0.000 claims description 8
- 229920000609 methyl cellulose Polymers 0.000 claims description 8
- 239000001923 methylcellulose Substances 0.000 claims description 8
- 235000010981 methylcellulose Nutrition 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910017604 nitric acid Inorganic materials 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium group Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 claims description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims description 7
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 claims description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 6
- 239000008139 complexing agent Substances 0.000 claims description 6
- 238000004898 kneading Methods 0.000 claims description 6
- 150000002815 nickel Chemical class 0.000 claims description 6
- 239000002243 precursor Substances 0.000 claims description 6
- 150000003657 tungsten Chemical class 0.000 claims description 6
- 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 5
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 5
- 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 description 5
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 4
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 4
- 229930195725 Mannitol Natural products 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 4
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 4
- 239000000594 mannitol Substances 0.000 claims description 4
- 235000010355 mannitol Nutrition 0.000 claims description 4
- 150000007522 mineralic acids Chemical class 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 229910000008 nickel(II) carbonate Inorganic materials 0.000 claims description 4
- ZULUUIKRFGGGTL-UHFFFAOYSA-L nickel(ii) carbonate Chemical compound [Ni+2].[O-]C([O-])=O ZULUUIKRFGGGTL-UHFFFAOYSA-L 0.000 claims description 4
- 150000007524 organic acids Chemical class 0.000 claims description 4
- 238000000967 suction filtration Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 4
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 2
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 claims description 2
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 claims description 2
- MQRWBMAEBQOWAF-UHFFFAOYSA-N acetic acid;nickel Chemical compound [Ni].CC(O)=O.CC(O)=O MQRWBMAEBQOWAF-UHFFFAOYSA-N 0.000 claims description 2
- 230000004913 activation Effects 0.000 claims description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 2
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 2
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004327 boric acid Substances 0.000 claims description 2
- 230000000536 complexating effect Effects 0.000 claims description 2
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 claims description 2
- 238000011068 loading method Methods 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 150000002751 molybdenum Chemical class 0.000 claims description 2
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 2
- 229940078494 nickel acetate Drugs 0.000 claims description 2
- 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 2
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 239000011975 tartaric acid Substances 0.000 claims description 2
- 235000002906 tartaric acid Nutrition 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 244000275012 Sesbania cannabina Species 0.000 claims 1
- 238000005486 sulfidation Methods 0.000 claims 1
- 238000007142 ring opening reaction Methods 0.000 abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 abstract description 6
- 239000011593 sulfur Substances 0.000 abstract description 6
- 238000005336 cracking Methods 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 21
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 9
- 239000002253 acid Substances 0.000 description 8
- 241000219782 Sesbania Species 0.000 description 7
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000003929 acidic solution Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 238000006317 isomerization reaction Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- AOPCKOPZYFFEDA-UHFFFAOYSA-N nickel(2+);dinitrate;hexahydrate Chemical compound O.O.O.O.O.O.[Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O AOPCKOPZYFFEDA-UHFFFAOYSA-N 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 238000004523 catalytic cracking Methods 0.000 description 2
- 238000004517 catalytic hydrocracking Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- QIVUCLWGARAQIO-OLIXTKCUSA-N (3s)-n-[(3s,5s,6r)-6-methyl-2-oxo-1-(2,2,2-trifluoroethyl)-5-(2,3,6-trifluorophenyl)piperidin-3-yl]-2-oxospiro[1h-pyrrolo[2,3-b]pyridine-3,6'-5,7-dihydrocyclopenta[b]pyridine]-3'-carboxamide Chemical compound C1([C@H]2[C@H](N(C(=O)[C@@H](NC(=O)C=3C=C4C[C@]5(CC4=NC=3)C3=CC=CN=C3NC5=O)C2)CC(F)(F)F)C)=C(F)C=CC(F)=C1F QIVUCLWGARAQIO-OLIXTKCUSA-N 0.000 description 1
- OUXCBPLFCPMLQZ-WOPPDYDQSA-N 4-amino-1-[(2r,3s,4s,5r)-4-hydroxy-5-(hydroxymethyl)-3-methyloxolan-2-yl]-5-iodopyrimidin-2-one Chemical compound C[C@H]1[C@H](O)[C@@H](CO)O[C@H]1N1C(=O)N=C(N)C(I)=C1 OUXCBPLFCPMLQZ-WOPPDYDQSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010335 hydrothermal treatment Methods 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- UDGSVBYJWHOHNN-UHFFFAOYSA-N n',n'-diethylethane-1,2-diamine Chemical compound CCN(CC)CCN UDGSVBYJWHOHNN-UHFFFAOYSA-N 0.000 description 1
- VOVZXURTCKPRDQ-CQSZACIVSA-N n-[4-[chloro(difluoro)methoxy]phenyl]-6-[(3r)-3-hydroxypyrrolidin-1-yl]-5-(1h-pyrazol-5-yl)pyridine-3-carboxamide Chemical compound C1[C@H](O)CCN1C1=NC=C(C(=O)NC=2C=CC(OC(F)(F)Cl)=CC=2)C=C1C1=CC=NN1 VOVZXURTCKPRDQ-CQSZACIVSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 238000009736 wetting 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/82—Phosphates
- B01J29/84—Aluminophosphates containing other elements, e.g. metals, boron
- B01J29/85—Silicoaluminophosphates (SAPO compounds)
-
- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/78—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J29/7815—Zeolite Beta
-
- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/80—Mixtures of different zeolites
-
- B01J35/615—
-
- B01J35/633—
-
- B01J35/635—
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- B01J35/647—
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- 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
- B01J37/0018—Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)
-
- 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
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
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- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
- C10G45/02—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing
- C10G45/04—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used
- C10G45/12—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to eliminate hetero atoms without changing the skeleton of the hydrocarbon involved and without cracking into lower boiling hydrocarbons; Hydrofinishing characterised by the catalyst used containing crystalline alumino-silicates, e.g. molecular sieves
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/20—Characteristics of the feedstock or the products
- C10G2300/201—Impurities
- C10G2300/202—Heteroatoms content, i.e. S, N, O, P
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
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Abstract
本发明公开了一种提高十六烷值加氢改质催化剂、制备方法及其应用。本发明加氢改质催化由活性组分、载体及助剂组成;所述的活性组分由第VIB族金属和第VIII族金属中的一种或者几种,所述的载体由SAPO‑5或Beta/无定形硅铝复合材料、大孔氧化铝与SB粉共同组成,所述的助剂为B、F、P中的一种或者几种;催化剂组分质量含量为:SAPO‑5或Beta/无定形硅铝复合材料为25~50wt%、VIB族金属为12~20wt%、VIII族金属为4~8wt%、助剂为0~4wt%,其余组分为γ‑Al2O3;比表面积为300~380m2/g,孔容为0.35~0.60cm3/g,平均孔径8~12nm,机械强度不低于45N/mm。本发明催化剂在阻止柴油馏分裂解的基础上,实现多环芳烃组分加氢饱和与适度开环,并有效的脱除柴油中硫组分与氮组分。
Description
技术领域
本发明涉及炼油加氢催化剂技术领域,涉及一种提高柴油十六烷值加氢改质催化剂的制备方法,特别涉及含有分子筛无定形硅铝复合材料的加氢催化剂的制备及应用。
背景技术
随着原油日益重质化与劣质化,一次加工与二次加工柴油均呈现出高硫、高芳烃与低十六烷值的特性,而环保法规的日趋严格,各国对柴油质量标准提出越来越高的要求,柴油产品无硫化、低芳烃化与高十六烷值是未来发展趋势。如何将高硫、高芳烃与低十六烷值的柴油馏分转化为高品质的柴油产品,是石油炼制研究者持续关注的重点。
目前通过加氢精制技术可实现柴油产品的无硫化,而对提高柴油产品十六烷值作用不明显;加氢裂化技术可实现柴油产品的无硫化与大幅提高十六烷值,但是加氢裂化技术会降低柴油产品液收与增大反应氢耗,加工不具备经济性;加氢改质技术即可实现柴油产品无硫化与大幅提高十六烷值,还可保证柴油产品液收,是低十六烷值柴油生产高十六烷值柴油的最佳加工路线。加氢改质技术的重点在于加氢改质催化剂的开发。
CN104667962A公开了一种加氢改质催化剂及其制备方法。该加氢改质催化剂中,载体包括氧化铝和分子筛,活性金属组分为Mo、Co和Ni,其中活性金属组分在每个催化剂颗粒截面上的浓度分布情况如下:Co0/Co1<Co1/2/Co1<1,Ni0/Ni1>Ni1/2/Ni1>1,Mo为均匀分布,所述催化剂中含有机物。该方法中Mo采用常规方法引入催化剂中,Co和Ni通过下述方法引入:通过饱和浸渍或过量浸渍法用含吸附剂I的溶液浸渍载体,再浸渍负载活性金属Ni,采用不饱和浸渍法用含有吸附剂II的润湿液浸渍催化剂中间体,再浸渍负载活性金属Co,得到加氢改质催化剂。该催化剂用于柴油加氢改质过程中,具有深度加氢脱硫活性,并能在保持柴油收率较高的情况下改善十六烷值等综合性能。
CN 101089131涉及一种柴油馏分加氢改质方法。其中加氢改质反应区的催化剂中至少有一种催化剂为体相催化剂,体相催化剂为复合氧化物NiXWYOZ和氧化物MOO3的重量比1∶ 10~10∶1构成,复合氧化物NiXWYOZ和氧化物MOO3占催化剂组合物总重量的40%~100%。
CN103372457A公开了一种催化裂化柴油加氢改质催化剂及应用;催化剂由VIII族和 VIB族加氢活性金属组分以及含改性Y分子筛、非晶态硅铝和氧化铝的载体组成;改性Y分子筛以NaY分子筛为原料,经两次铵交换、一次焙烧和一次水热处理得到;本催化剂用于对 160~380℃馏分油或催化裂化柴油加氢改质,本方法处理硫含量大于1000μg/g,氮含量大于 1000μg/g,芳烃含量大于55v%的劣质柴油馏分,脱硫率及脱氮率均达98%以上,十六烷值提高10个单位以上,柴油馏分收率达98wt%以上。
现有的技术中单独采用硅铝或硅铝与分子筛机械混合作为柴油加氢改质酸性组分,单独采用硅铝双环芳烃仅可使得双环以上芳烃加氢饱和,异构化开环性能低,不能够大幅提高十六烷值;采用无定形硅铝与分子筛机械混合,酸分布于无序可循,不能够很好的匹配加氢饱和与异构化开环性能,在酸性强的分子筛位置上会过度裂化降低柴油液收,在酸性弱的无定形硅铝位置上仅会发生加氢饱和反应而无异构开环反应。
发明内容
针对以上技术不足,本发明提供了一种提高柴油十六烷值的加氢改质催化剂,该催化剂选用异构化开环性能优异的SAPO-5与Beta分子筛为核,合成无定形硅铝包裹分子筛生长的复合材料,以此复合材料为酸性组分制备柴油提高十六烷值加氢催化剂,该催化剂在阻止柴油馏分裂解的基础上,实现多环芳烃组分加氢饱和与适度开环,并有效的脱除柴油中硫组分与氮组分。
本发明具体通过以下技术方案予以实现:
一种提高柴油十六烷值的加氢改质催化剂,包括:所述的加氢改质催化由活性组分、载体及助剂组成;其中活性组分由第VIB族金属和第VIII族金属中的一种或者几种,所述载体由SAPO-5或Beta/无定形硅铝复合材料、大孔氧化铝与SB粉共同组成,所述的助剂为B、F、 P中的一种或者几种;
所述的加氢改质催化剂组分质量含量为:SAPO-5或Beta/无定形硅铝复合材料为25~50wt%、金属Mo或W的氧化物含量为12~20wt%、金属Ni金属的氧化物为4~8wt%、助剂为0.5~4.0wt%,其余组分为γ-Al2O3;比表面积为300~380m2/g,孔容为0.35~0.60cm3/g,平均孔径8~12nm,机械强度不低于45N/mm;
所述的加氢改质催化剂的为齿球形,齿球粒径大小优选为1.5mm~4.5mm;
所述的SAPO-5或Beta/无定形硅铝复合材料是以SAPO-5或Beta分子筛为核,无定形硅铝包裹分子筛生产的复合材料,其合成步骤包括以下步骤:称取一定量的正硅酸乙酯(TEOS) 溶于去离子水中,水解后将其与铝盐水溶液混合充分搅拌均匀,然后溶液中加入一定量的 SAPO-5或Beta型分子筛,形成混合溶液;再用氨水滴加至混合溶液中,控制混合溶液的pH 为10.0±0.2,氨水滴加完成后,在50~65℃温度下搅拌老化2~6h;合成产物静置老化2~4h 后,经抽滤洗涤至中性后,将滤饼烘干后,在480~550℃下焙烧2~6h,得到的SAPO-5或 Beta/无定形硅铝复合材料;
所述的SAPO-5或Beta/无定形硅铝复合材料中分子筛的质量含量为15~40%;
所述的SAPO-5分子筛中SiO2:Al2O3:P2O5摩尔比为(0.1~0.5):1:1,所述的Beta型分子筛的 SiO2:Al2O3摩尔比为40~120,所述的无定形硅铝中SiO2的质量含量为15~50%;
所述的铝盐为硝酸铝、硫酸铝与氯化铝中的一种或几种;
所述的氨水的质量浓度为8~15%。
本发明还进一步提供了上述加氢改质催化剂的制备方法,包括以下步骤:
1)加氢改质催化剂载体的制备:
称取一定量的正硅酸乙酯(TEOS)溶于去离子水中,水解后将其与铝盐水溶液混合充分搅拌均匀,然后溶液中加入一定量的SAPO-5或Beta型分子筛,形成混合溶液;再用氨水滴加至混合溶液中,控制混合溶液的pH为10.0±0.2,氨水滴加完成后,在50~65℃温度下搅拌老化2~6h;合成产物静置老化2~4h后,经抽滤洗涤至中性后,将滤饼烘干后,在480~550℃下焙烧2~6h,得到的SAPO-5或Beta/无定形硅铝复合材料;
将合成的SAPO-5或Beta/无定形硅铝复合材料、大孔氧化铝、SB粉、助剂、粘结剂混合均匀,加入无机与有机酸溶液,混捏成可塑状体、经挤压成条、拉伸、切粒整形、养生、干燥焙烧后得到齿球型载体;所述的干燥温度为100~180℃,干燥时间6~24h;焙烧温度为 450~600℃,焙烧时间2~8h;
2)络和浸渍液的配制:在浸渍槽中加入去离子水,再依次加入络合剂、金属镍盐、金属钼或/和钨盐和助剂元素的前驱体,均匀搅拌至溶解,定容后得到稳定的浸渍液;
3)催化剂的浸渍:将所制备的载体放入浸渍槽中,采用等体积浸渍技术负载活性组分,浸渍后的载体先于室温中养生4~12h,再于100~200℃烘箱中干燥4~12h,最后放置在马弗炉中程序升温至360~480℃活化4~8h,即得到加氢改质催化剂;
步骤1)中所述的粘结剂为田菁粉或/和甲基纤维素,所述的无机酸性溶液为硝酸,所述的有机酸为柠檬酸、酒石酸与醋酸中的一种或几种;
步骤2)中所述的络合剂为柠檬酸、乙二醇、丙三醇、甘露醇、氨基三乙酸、乙醇胺、二乙胺、三乙胺中的一种或者几种;所述的金属镍盐为硝酸镍、乙酸镍与碱式碳酸镍中的一种或几种;所述的钼盐为七钼酸铵或三氧化钼中的一种或二种;所述的钨盐为偏钨酸铵;所述的助剂前驱体为磷酸、磷酸二氢铵、氨基三亚甲基叉膦酸、氟化铵、硼酸中的一种或几种。
本发明还提供了一种上述加氢改质催化剂经硫化后在劣质柴油的加氢改质提高十六烷值中的应用。
本发明首创以十二圆环的SAPO-5与Beta分子筛为核,无定形硅铝包裹分子筛生长的复合材料为载体原料,制备柴油提高十六烷值加氢改质催化剂。SAPO-5或Beta/无定形硅铝复合材料是分子筛与无定形硅铝之间的化学键的结合,由于分子筛孔结构小、酸中心高,无定形硅铝孔结构大酸中心低,使复合材料具有由里向外的阶梯式孔结构与酸分布。柴油中低十六烷值双环以上芳烃组分,首先在无定形硅铝组分中进行加氢饱和,然后扩散至分子筛中进行加氢异构与开环反应,再扩散至无定形硅铝中进行加氢饱和。此复合材料协同了分子筛与无定形硅铝的各自特性,在芳烃分子反应时缩短了加氢饱和反应与加氢异构开环反应间的距离,采用此复合材料所制备的催化剂经硫化后应用于劣质柴油的加氢改质过程中,在大幅提柴油十六烷值的情况下并防止柴油馏分过度裂解降低液收,并对柴油中的硫化物具有优异的加氢脱硫活性,所得精制柴油具有低硫、低芳烃和高十六烷值。
具体实施方式
下面结合具体实施例对本发明技术方案作进一步描述。
实施例-1Beta/无定形硅铝(无定形硅铝SiO2含量30.0wt%)
称取102.0g TEOS溶于100mL去离子水中,水解后将其与550mL 2.5mol/L的硝酸铝盐水溶液混合充分搅拌均匀,然后溶液中加入25.0g Beta型分子筛,形成混合溶液。采用质量浓度为10wt%的氨水滴加至混合溶液中至混合溶液的pH为10.0,氨水滴加完成后混合胶液在50℃温度下搅拌老化4h。合成产物静置老化4h后,经抽滤洗涤至中性后,将滤饼于120℃下烘干4h,500℃焙烧4h,即得到Beta/无定形硅铝复合材料,标记B-SiAl-1。
实施例-2Beta/无定形硅铝(无定形硅铝SiO2含量30.0wt%)
称取102.0g TEOS溶于100mL去离子水中,水解后将其与550mL 2.5mol/L的硝酸铝盐水溶液混合充分搅拌均匀,然后溶液中加入40.0g Beta型分子筛,形成混合溶液。采用质量浓度为10wt%的氨水滴加至混合溶液中至混合溶液的pH为10.0,氨水滴加完成后混合胶液在50℃温度下搅拌老化4h。合成产物静置老化4h后,经抽滤洗涤至中性后,将滤饼于 120℃下烘干4h,500℃焙烧4h,即得到Beta/无定形硅铝复合材料,标记B-SiAl-2。
实施例-3SAPO-5/无定形硅铝(无定形硅铝SiO2含量30.0wt%)
称取102.0g TEOS溶于100mL去离子水中,水解后将其与550mL 2.5mol/L的硝酸铝盐水溶液混合充分搅拌均匀,然后溶液中加入40.0g SAPO-5型分子筛,形成混合溶液。采用质量浓度为10wt%的氨水滴加至混合溶液中至混合溶液的pH为10.0,氨水滴加完成后混合胶液在50℃温度下搅拌老化4h。合成产物静置老化4h后,经抽滤洗涤至中性后,将滤饼于120℃下烘干4h,500℃焙烧4h,即得到SAPO-5/无定形硅铝复合材料,标记S-SiAl-1。
实施例-4SAPO-5/无定形硅铝(无定形硅铝SiO2含量50.0wt%)
称取170.0g TEOS溶于100mL去离子水中,水解后将其与395mL 2.5mol/L的氯化铝盐水溶液混合充分搅拌均匀,然后溶液中加入40.0g SAPO-5型分子筛,形成混合溶液。采用质量浓度为10wt%的氨水滴加至混合溶液中至混合溶液的pH为10.2,氨水滴加完成后混合胶液在50℃温度下搅拌老化4h。合成产物静置老化4h后,经抽滤洗涤至中性后,将滤饼于120℃下烘干4h,500℃焙烧4h,即得到SAPO-5/无定形硅铝复合材料,标记S-SiAl-2。
表1实施例1-4合成的复合分子筛的物性参数
Samples | B-SiAl-1 | B-SiAl-1 | S-SiAl-1 | S-SiAl-2 |
S<sub>BET</sub>,m<sup>2</sup>/g | 462 | 496 | 428 | 455 |
S<sub>MIC</sub>,m<sup>2</sup>/g | 124 | 167 | 132 | 135 |
V<sub>MIC</sub>,cm<sup>3</sup>/g | 0.12 | 0.19 | 0.14 | 0.14 |
V<sub>TOTAL</sub>,cm<sup>3</sup>/g | 0.82 | 0.77 | 0.65 | 0.69 |
总酸量,mmol/g | 1.25 | 1.38 | 1.04 | 0.99 |
B酸/L酸摩尔比 | 0.46 | 0.51 | 0.41 | 0.40 |
实施例-5
将40.0g B-SiAl-1复合分子筛(干基含量95%)、76.0g拟薄水铝石(干基含量72%)、20.0 g SB粉(干基含量75%)、2.0g田菁粉及3.0g甲基纤维素混合后投入混捏机混碾15min,将 98.0g由水、硝酸、柠檬酸配制的酸性溶液逐次加入干粉中,先混捏至可挤膏状物,再经过空板、直径为8mm圆柱型孔板各挤压一次,最后成型为直径1.5mm蝶形条状物;将所得湿条先于30℃烘箱中养生8h,再于120℃烘箱中干燥6h,最后放置在马弗炉中程序升温至 520℃焙烧4h,即得到载体ZGZ-1。
在60mL去离子水中依次加入6.0g柠檬酸、22.2g碱式碳酸镍、36.4g三氧化钼,搅拌加入3.2g磷酸,加热至100℃至溶,降温冷却至室温,加入4.0g甘露醇,最后浸渍液定容至100mL,取上步所制备ZGZ-1载体50g放置浸渍槽中,倒入50mL浸渍液,浸渍4h后,将浸渍后的载体先于30℃烘箱中养生6h,再于120℃烘箱中干燥8h,最后放置在马弗炉中程序升温至450℃焙烧3h,即得到加氢改质催化剂CGZ-1。
实施例-6
将28.0g B-SiAl-2复合分子筛(干基含量95%)、83.0g拟薄水铝石(干基含量72%)、20.0 g SB粉(干基含量75%)、2.0g田菁粉及3.0g甲基纤维素混合后投入混捏机混碾15min,将 125.0g由水、硝酸、柠檬酸配制的酸性溶液逐次加入干粉中,先混捏至可挤膏状物,再经过空板、直径为8mm圆柱型孔板各挤压一次,最后成型为直径1.5mm蝶形条状物;将所得湿条先于30℃烘箱中养生6h,再于120℃烘箱中干燥8h,最后放置在马弗炉中程序升温至 520℃焙烧4h,即得到载体ZGZ-2。
在60mL去离子水中依次溶解4.0g柠檬酸、4.0g氟化铵,46.7g六水硝酸镍、27.3g偏钨酸铵、14.7g七钼酸铵,将浸渍液定容至100mL,取上步所制备ZGZ-2载体50g放置浸渍槽中,倒入5mL去离子水与50mL浸渍液,浸渍4h后,将浸渍后的载体先于30℃烘箱中养生8h,再于120℃烘箱中干燥6h,最后放置在马弗炉中程序升温至480℃焙烧4h,即得到催化剂CGZ-2。
实施例-7
将42.0g S-SiAl-1复合分子筛(干基含量95%)、69.4g拟薄水铝石(干基含量72%)、13.3 g SB粉(干基含量75%)、2.0g田菁粉及3.0g甲基纤维素混合后投入混捏机混碾15min,将 120.0g由水、硝酸、柠檬酸配制的酸性溶液逐次加入干粉中,先混捏至可挤膏状物,再经过空板、直径为8mm圆柱型孔板各挤压一次,最后成型为直径1.5mm蝶形条状物;将所得湿条先于30℃烘箱中养生6h,再于120℃烘箱中干燥8h,最后放置在马弗炉中程序升温至 500℃焙烧4h,即得到载体ZGZ-3。
在60mL去离子水中依次溶解4.0g氨基三乙胺、2.0g氟化铵,40.7g六水硝酸镍、40.9 g偏钨酸铵,将浸渍液定容至100mL,取上步所制备ZGZ-2载体50g放置浸渍槽中,倒入55mL浸渍液,浸渍4h后,将浸渍后的载体先于30℃烘箱中养生8h,再于120℃烘箱中干燥8h,最后放置在马弗炉中程序升温至450℃焙烧4h,即得到催化剂CGZ-3。
实施例-8
将42.1g S-SiAl-2复合分子筛(干基含量95%)、62.5g拟薄水铝石(干基含量72%)、20.0 g SB粉(干基含量75%)、2.0g田菁粉及3.0g甲基纤维素混合后投入混捏机混碾15min,将 125.0g由水、硝酸、柠檬酸配制的酸性溶液逐次加入干粉中,先混捏至可挤膏状物,再经过空板、直径为8mm圆柱型孔板各挤压一次,最后成型为直径1.5mm蝶形条状物;将所得湿条先于30℃烘箱中养生6h,再于120℃烘箱中干燥8h,最后放置在马弗炉中程序升温至 520℃焙烧4h,即得到载体ZGZ-4。
在60mL去离子水中依次溶解4.0g柠檬酸、4.0g氟化铵,46.7g六水硝酸镍、27.3g偏钨酸铵、14.7g七钼酸铵,将浸渍液定容至100mL,取上步所制备ZGZ-4载体50g放置浸渍槽中,倒入5mL去离子水与50mL浸渍液,浸渍4h后,将浸渍后的载体先于30℃烘箱中养生8h,再于120℃烘箱中干燥8h,最后放置在马弗炉中程序升温至450℃焙烧4h,即得到催化剂CGZ-4。
对比实施例-1
将11.1g Beta分子筛(干基含量90%)、33.0无定形硅铝(SiO2含量30%,干基含量85%)、 76.0g拟薄水铝石(干基含量72%)、20.0g SB粉(干基含量75%)、2.0g田菁粉及3.0g甲基纤维素混合后投入混捏机混碾15min,将98.0g由水、硝酸、柠檬酸配制的酸性溶液逐次加入干粉中,先混捏至可挤膏状物,再经过空板、直径为8mm圆柱型孔板各挤压一次,最后成型为直径1.5mm蝶形条状物;将所得湿条先于30℃烘箱中养生8h,再于120℃烘箱中干燥6h,最后放置在马弗炉中程序升温至520℃焙烧4h,即得到载体DZ-1。
在60mL去离子水中依次加入6.0g柠檬酸、22.2g碱式碳酸镍、36.4g三氧化钼,搅拌加入3.2g磷酸,加热至100℃至溶,降温冷却至室温,加入4.0g甘露醇,最后浸渍液定容至100mL,取上步所制备DZGZ-1载体50g放置浸渍槽中,倒入50mL浸渍液,浸渍4h后,将浸渍后的载体先于30℃烘箱中养生6h,再于120℃烘箱中干燥8h,最后放置在马弗炉中程序升温至450℃焙烧3h,即得到加氢改质催化剂DC-1。
对比实施例-2
将17.4g SAPO-5分子筛(干基含量92%)、28.2无定形硅铝(SiO2含量50%,干基含量 85%)、62.5g拟薄水铝石(干基含量72%)、20.0g SB粉(干基含量75%)、2.0g田菁粉及3.0g 甲基纤维素混合后投入混捏机混碾15min,将125.0g由水、硝酸、柠檬酸配制的酸性溶液逐次加入干粉中,先混捏至可挤膏状物,再经过空板、直径为8mm圆柱型孔板各挤压一次,最后成型为直径1.5mm蝶形条状物;将所得湿条先于30℃烘箱中养生6h,再于120℃烘箱中干燥8h,最后放置在马弗炉中程序升温至520℃焙烧4h,即得到载体DZ-2。
在60mL去离子水中依次溶解4.0g柠檬酸、4.0g氟化铵,46.7g六水硝酸镍、27.3g偏钨酸铵、14.7g七钼酸铵,将浸渍液定容至100mL,取上步所制备ZGZ-4载体50g放置浸渍槽中,倒入5mL去离子水与50mL浸渍液,浸渍4h后,将浸渍后的载体先于30℃烘箱中养生8h,再于120℃烘箱中干燥8h,最后放置在马弗炉中程序升温至450℃焙烧4h,即得到催化剂DC-2。
表2实施例和对比实例制备的加氢改质催化剂的物化性质
实施例-9
本实施例介绍由本发明所制备的部分加氢改质催化剂及对比催化剂的活性评价。在50 mL固定床加氢反应装置上进行评价,催化剂评价条件为:反应温度为360℃,反应压力8.0 MPa,氢油体积比600:1,体积空速1.0h-1。评价原料为中海油炼企环烷基劣质柴油,其原料性质及加氢改质评价结果如表-3所示。
表3实施例和对比实例制备的加氢改质催化剂对劣质柴油的加氢评价结果
Claims (4)
1.一种提高柴油十六烷值的加氢改质催化剂,其特征在于:所述的加氢改质催化由活性组分、载体及助剂组成;其中活性组分由第VIB族金属和第VIII族金属中的一种或者几种,所述载体由SAPO-5或Beta/无定形硅铝复合材料、大孔氧化铝与SB粉共同组成,所述的助剂为B、F、P中的一种或者几种;
所述的加氢改质催化剂组分质量含量为:SAPO-5或Beta/无定形硅铝复合材料为25~50wt%、金属Mo或W的氧化物含量为12~20wt%、金属Ni金属的氧化物为4~8wt%、助剂为0.5~4.0wt%,其余组分为γ-Al2O3;比表面积为300~380m2/g,孔容为0.35~0.60cm3/g,平均孔径8~12nm,机械强度不低于45N/mm;
所述的加氢改质催化剂为齿球形;
所述的SAPO-5或Beta/无定形硅铝复合材料是以SAPO-5或Beta分子筛为核,无定形硅铝包裹分子筛生产的复合材料,其合成步骤包括以下步骤:称取一定量的正硅酸乙酯(TEOS)溶于去离子水中,水解后将其与铝盐水溶液混合充分搅拌均匀,然后溶液中加入一定量的SAPO-5或Beta型分子筛,形成混合溶液;再用氨水滴加至混合溶液中,控制混合溶液的pH为10.0±0.2,氨水滴加完成后,在50~65℃温度下搅拌老化2~6h;合成产物静置老化2~4h后,经抽滤洗涤至中性后,将滤饼烘干后,在480~550℃下焙烧2~6h,得到的SAPO-5或Beta/无定形硅铝复合材料;
所述的SAPO-5或Beta/无定形硅铝复合材料中分子筛的质量含量为15~40%;
所述的SAPO-5分子筛中SiO2:Al2O3:P2O5摩尔比为(0.1~0.5):1:1,所述的Beta型分子筛的SiO2:Al2O3摩尔比为40~120,所述的无定形硅铝中SiO2的质量含量为15~50%;
所述的铝盐为硝酸铝、硫酸铝与氯化铝中的一种或几种;
所述的氨水的质量浓度为8~15%。
2.根据权利要求1所述的加氢改质催化剂,其特征在于,所述加氢改质催化剂的齿球粒径大小为1.5mm~4.5mm。
3.一种权利要求1所述的加氢改质催化剂的制备方法,其特征在于,包括以下步骤:
1)加氢改质催化剂载体的制备:
称取一定量的正硅酸乙酯(TEOS)溶于去离子水中,水解后将其与铝盐水溶液混合充分搅拌均匀,然后溶液中加入一定量的SAPO-5或Beta型分子筛,形成混合溶液;再用氨水滴加至混合溶液中,控制混合溶液的pH为10.0±0.2,氨水滴加完成后,在50~65℃温度下搅拌老化2~6h;合成产物静置老化2~4h后,经抽滤洗涤至中性后,将滤饼烘干后,在480~550℃下焙烧2~6h,得到的SAPO-5或Beta/无定形硅铝复合材料;
将合成的SAPO-5或Beta/无定形硅铝复合材料、大孔氧化铝、SB粉、助剂、粘结剂混合均匀,加入无机与有机酸溶液,混捏成可塑状体、经挤压成条、拉伸、切粒整形、养生、干燥焙烧后得到齿球型载体;所述的干燥温度为100~180℃,干燥时间6~24h;焙烧温度为450~600℃,焙烧时间2~8h;
2)络和浸渍液的配制:在浸渍槽中加入去离子水,再依次加入络合剂、金属镍盐、金属钼或/和钨盐和助剂元素的前驱体,均匀搅拌至溶解,定容后得到稳定的浸渍液;
3)催化剂的浸渍:将所制备的载体放入浸渍槽中,采用等体积浸渍技术负载活性组分,浸渍后的载体先于室温中养生4~12h,再于100~200℃烘箱中干燥4~12h,最后放置在马弗炉中程序升温至360~480℃活化4~8h,即得到加氢改质催化剂;
步骤1)中所述的粘结剂为田菁粉或/和甲基纤维素,所述的无机酸性溶液为硝酸,所述的有机酸为柠檬酸、酒石酸与醋酸中的一种或几种;
步骤2)中所述的络合剂为柠檬酸、乙二醇、丙三醇、甘露醇、氨基三乙酸、乙醇胺、二乙胺、三乙胺中的一种或者几种;所述的金属镍盐为硝酸镍、乙酸镍与碱式碳酸镍中的一种或几种;所述的钼盐为七钼酸铵或三氧化钼中的一种或二种;所述的钨盐为偏钨酸铵;所述的助剂前驱体为磷酸、磷酸二氢铵、氨基三亚甲基叉膦酸、氟化铵、硼酸中的一种或几种。
4.一种权利要求1所述的加氢改质催化剂经硫化后在劣质柴油的加氢改质提高十六烷值中的应用。
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