CN1660971A - Combination of molecular sieve possessing function of desulfuration and jpreparation method - Google Patents

Combination of molecular sieve possessing function of desulfuration and jpreparation method Download PDF

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CN1660971A
CN1660971A CN 200410004480 CN200410004480A CN1660971A CN 1660971 A CN1660971 A CN 1660971A CN 200410004480 CN200410004480 CN 200410004480 CN 200410004480 A CN200410004480 A CN 200410004480A CN 1660971 A CN1660971 A CN 1660971A
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compound
weight
zeolite
metal
molecular sieve
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CN1322926C (en
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王鹏
朱玉霞
陈辉
李明罡
宗保宁
田辉平
龙军
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Sinopec Research Institute of Petroleum Processing
China Petroleum and Chemical Corp
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Sinopec Research Institute of Petroleum Processing
China Petroleum and Chemical Corp
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Abstract

A molecular sieve composition with desulfurizing action is proportionally composed of molecular sieve and its coated layer prepared from alumina and metallic component chosen from non-Al metals in IIIA family, the metals in 1VA, 1VB, VB, VIB and VIIB families, non-noble metals in VIII family, and RE metals.

Description

A kind of combination of molecular sieve and preparation method thereof with desulfidation
Technical field
The invention relates to a kind of combination of molecular sieve and preparation method thereof, more particularly, is about a kind of combination of molecular sieve with desulfidation and preparation method thereof.
Background technology
In recent years, for the consideration of environmental protection, worldwide, the requirement of oil fuel standard is improved constantly.With China is example, and State Quality Supervision Bureau had formulated " motor spirit objectionable impurities control criterion " in 1999, and according to the requirement of this standard, the sulphur content of gasoline product should be less than 800ppm.In fact, the sulphur of gasoline product more than 90% comes from FCC gasoline, and on the other hand, the proportion of middle-eastern crude in the shared crude oil in Chinese refinery with higher sulfur content is increasing, and therefore, the sulphur content that reduces in the FCC gasoline is most important to producing clean gasoline.
At present, can be by stock oil be carried out the hydrogenation pre-treatment, or FCC gasoline carried out making with extra care behind the hydrogenation reach the purpose that reduces the FCC sulfur in gasoline.Yet these two kinds of method investments are big, and the process cost height also can cause the loss of gasoline octane rating.
In the FCC riser tube, by the method for catalytic cracking, it is the most attractive technological approaches economically that the sulphur original position is removed.For reaching this purpose, need in catalytic cracking process, add promotor with desulfurizing function, perhaps use the cracking catalyst that has desulfurizing function, contains the desulfurization component.
US6,036,847 and patent families EP0,798,362A2 discloses a kind of fluidized catalytic cracking of hydrocarbons method, wherein, and under the condition of described hydrocarbon feed hydrogenation outside not existing, a zone of cracking by cracking, and all particles that comprise granules of catalyst wherein, contain another particle constantly in cracking hydrocarbon district and a catalyst regeneration zones circulation in all particles, this particle has the activity of the cracking hydrocarbon ils lower than granules of catalyst, and described activity is benchmark with the fresh granules.This particle is made up of the inorganic oxide of titanium oxide and a kind of non-oxide titanium basically.The inorganic oxide of described non-oxide titanium contains a kind of Lewis acid, this Lewis acid is selected from following element and compound composition thereof one group: nickel, copper, zinc, silver, cadmium, indium, tin, mercury, thallium, lead, bismuth, boron, aluminium (non-oxide aluminium) and germanium, described Lewis acid loads on the aluminum oxide.Because use this auxiliary agent that contains titanium oxide, crackate FCC sulfur in gasoline content is reduced.
US5,376,608 disclose a kind of cracking catalyst composition with desulfidation, said composition contains (A) and is dispersed in zeolite/molecular sieve in a kind of inorganic oxide matrix, (b) contain the alumina component of Lewis acid, this alumina component contains the Lewis acid of 1-50 weight %, and described Lewis acid is selected to load on and contains nickel, copper, zinc, silver, cadmium, indium, tin, mercury, thallium, lead, bismuth, boron, aluminium (non-oxide aluminium) and the element of gallium and a group of oxide compound on the aluminum oxide.
WO 99/49001A1 discloses a kind of composition that reduces sulphur content in the hydrocarbon component, said composition contains a kind of houghite (hydrotalcite) material, this material is with a kind of Lewis acid dipping, can also contain a kind of FCC catalyzer in the said composition. described Lewis acid comprises transition metal, particularly the element of zinc, copper, nickel, cobalt, iron and manganese and compound.
WO 01/21733A1 discloses a kind of in the presence of heat regeneration cracking catalyst, contains the catalyst cracking method of organosulfur compound hydrocarbon raw material, and described catalyzer contains a kind of component that reduces The product sulfur, this component contains a kind of oxidation state greater than zero metal component, and described metal component comprises the 3rd cycle of the periodic table of elements, VB family, VIIB family, VIII family, IIB family, the metallic compound of IVA family or complex compound, as vanadium, zinc, iron, cobalt, the metallic compound of manganese and gallium or complex compound.The component of described reduction The product sulfur comprises that pore structure contains the molecular sieve of above-mentioned metal component, also comprises being dispersed in the support of the catalyst optional position, as the above-mentioned metal component in the porous oxide carrier.
WO 01/21732A1 discloses a kind of method that reduces sulphur content in the cracking petroleum fraction, this method is included in the temperature of raising and a kind of cracking catalyst and a kind of catalyzer that reduces the product sulphur content and exists down, with the petroleum fractions catalytic cracking, obtain having liquid crackate than low sulfur content.Wherein, the catalyzer of described reduction product sulphur content contains a kind of non-molecular sieve carrier of vanadium that contains, and described non-molecular sieve carrier can be the organic or inorganic carrier, preferred carrier is amorphous or the para-crystal inorganic oxide, as aluminum oxide, silicon oxide, clay or their mixture.
CN1281887A discloses a kind of method that reduces catalytic cracking gasoline cut sulphur content, and this method is included in high temperature and the product desulfurization catalyst exists down, catalytic cracking gasoline feedstock fraction, the liquid cracked product of preparation low sulfur content.This desulfurization catalyst contains the porous molecular screen that metal ingredient is contained in a kind of cavernous structure inside.Described porous molecular screen can be a large pore zeolite, and promptly orifice diameter is at least the zeolite of 0.7 nanometer, as y-type zeolite, rare earth Y type zeolite (REY), ultrastable Y (USY), L zeolite, Beta zeolite, mordenite, ZSM-18 zeolite.Described molecular sieve also can be a mesopore zeolite, be orifice diameter for greater than 0.56 zeolite, as Pentasil zeolite, ZSM-5 zeolite, ZSM-22, ZSM-23 zeolite, ZSM-35 zeolite, ZSM-50 zeolite, ZSM-57 zeolite, MCM-22 zeolite, MCM-49 zeolite, MCM-56 zeolite less than 0.7 nanometer.Described molecular sieve can also be a non-zeolite molecular sieve, as the silicate with Different Silicon aluminum ratio is (as metal silicate metallosilicate.Titanosilicate titanosilicate), metal aluminate metalloaluminates (as germanium aluminate Germaniumaluminates), metal phosphate metallophosphates, aluminate or phosphate aluminophosphates, metallic aluminium phosphoric acid salt metalloaluminophosphates, the aluminosilicophosphate metal integratedsilicoaluminophosphates (MeAPSO and ELAPSO) of melts combine, aluminosilicophosphate silicoaluminophosphates (SAPO molecular sieve), gallium germanate (gallogermanates) and their combination.
CN1261618A discloses a kind of sulfur method of catalytic cracking gasoline cut, this method is included under the existence of high temperature, cracking catalyst and product desulfurization catalyst, to contain the petroleum cut catalytic cracking of organosulfur compound, produce the liquid crackate of low sulfur content.Described product desulfurization catalyst contains a kind of porous molecular screen, this molecular sieve contains first metal component and second metal component, first metal component is positioned at Molecular Sieve Pore inside and oxidation state greater than zero, and second metal component comprises at least a rare earth element that is positioned at Molecular Sieve Pore inside.Described first kind of metal component is selected from periodic table of elements period 4 and IIB, VB, IIIA, the metal, particularly vanadium of VIII family, zinc, iron, gallium.
CN1356374A discloses a kind of catalytic cracking catalyst that reduces the content of sulfur in gasoline function that has, and it is mainly by zeolitic material, rare earth material with have than the metal oxide of large specific surface etc. and form.Its preparation method is comprehensively to adopt pickling process and coprecipitation method.This catalyzer is to have more highly acid zeolitic material as catalyzer cracking activity component, adopt dipping, roasting method that the form of rare earth with oxide compound is dispersed on the acid zeolite, the metal hydroxides uniform mixing that zeolite and co-precipitation are made again, and then wash, dry, roasting and pulverizing.Described metal hydroxides can be one or more of Cu, Zn, Fe, Al, As, Hg, Ni, Zr, Sn, La, Ce, Pr, Nd, Sm, Ga and Ti.
CN1356379A discloses a kind of sweetening additive of sulphur content in the coke that can reduce simultaneously on gasoline and the catalyzer.It is mainly by zeolitic material, rare earth material, alkali or alkaline earth metal oxide with have metal oxide than large specific surface etc. and form.Its preparation method is comprehensively to adopt pickling process and coprecipitation method.This catalyzer is to serve as to suppress sulfide condensation green coke constituent element with basic metal or alkaline earth metal oxide.This catalyzer is still to have more highly acid zeolitic material as catalyzer cracking activity component, adopt dipping, roasting method that the form of rare earth with oxide compound is dispersed on the acid zeolite, the metal hydroxides uniform mixing that zeolite and co-precipitation are made again, and then wash, dry, roasting and pulverizing, adopt dipping, roasting method that basic metal or alkaline earth metal oxide are dispersed on the above-mentioned zeolite at last.Described metal hydroxides can be one or more of Cu, Zn, Fe, Al, As, Hg, Ni, Zr, Sn, La, Ce, Pr, Nd, Sm, Ga and Ti.
Above-mentioned cracking catalyst with desulfidation has certain desulfurization performance, and still, this class catalyst desulfurizing activity is not high enough.The particularly existing cracking catalyst that contains vanadium with desulfidation, because the aging and regenerative process of catalyzer is all carried out under high temperature and moisture vapor condition, under such condition, contained vanadium easily forms the liquid vanadic acid in the catalyzer, it is external and run off that formed liquid vanadic acid is understood outflow catalyst on the one hand, also can corrode the skeleton of contained molecular sieve in the catalyzer on the other hand, make the skeleton structure avalanche of molecular sieve, thereby the desulphurizing activated and cracking activity of cracking catalyst is all reduced rapidly.
CN1388220A discloses a kind of combination of molecular sieve with desulfidation, and said composition is made up of as the molecular sieve of catalyst and cracking of hydrocarbon active ingredient and the coating oxidation thing that is covered in this molecular sieve surface of 2-20 weight 80-98 weight %'s; The chemical constitution expression formula of wherein said coating oxidation thing is designated as with the mol ratio of oxide compound: aZnObTiO2Al 2O 3Wherein a is 0-2; B is 0-2; A and b are not 0 simultaneously.This catalyzer contains the coating of aluminum oxide, zinc and titanium, and the stability of molecular sieve is improved, and is still, desulphurizing activated still not high enough.
Summary of the invention
The purpose of this invention is to provide a kind of new, have combination of molecular sieve than high desulfurization activity and preparation method thereof.
The present inventor finds, adopts the specific described coat composed combination of molecular sieve of CN1388220A that is different from, and has higher desulphurizing activated, particularly, when the metal component in the described coating contains vanadium, desulphurizing activated higher.
Combination of molecular sieve provided by the invention contains molecular sieve and is covered in the coating on this molecular sieve surface, wherein, be benchmark with described combination of molecular sieve, the content of molecular sieve is 75-99 weight %, the content of coating is 1-25 weight %, and described coating contains aluminum oxide and metal component; Total amount with described coating is a benchmark, the content of aluminum oxide is 50-95 weight %, in oxide compound, the content of described metal component is 5-50 weight %, and described metal component is selected from one or more in the non-aluminum metal of IIIA family, IVA family metal, IVB family metal, VB family metal, group vib metal, VIIB family metal, VIII family base metal and the rare earth metal.
The preparation method of combination of molecular sieve provided by the invention is included in a kind of hydration aluminum oxide that contains, add a kind of acid in the compound of metal component and the slurries of water, make partially hydrated at least aluminum oxide peptization, obtain a kind of colloid, the colloid that obtains is mixed with molecular sieve and roasting, wherein, the compound of described metal component is selected from the non-aluminum metallization compound of IIIA family, IVA family metallic compound, IVB family metallic compound, VB family metallic compound, the group vib metallic compound, VIIB family metallic compound, in VIII family non-noble metal compound and the rare earth compound one or more, described hydrated aluminum oxide, the compound of metal component, the consumption of water and acid makes in the described coating and contains, total amount with described coating is a benchmark, the aluminum oxide of 50-95 weight % and in oxide compound, the metal component of 5-50 weight %, the consumption of described colloid and molecular sieve makes in the combination of molecular sieve that obtains and contains, with described combination of molecular sieve is benchmark, the coating of the molecular sieve of 75-99 weight % and 1-25 weight %.
Combination of molecular sieve provided by the invention has higher desulphurizing activated, show, first, compare with the non-coating molecule screen composition that ion-exchange, dipping and the mechanical mixing of routine prepare, combination of molecular sieve provided by the invention has higher desulphurizing activated, particularly, when described metal component contains vanadium, the introducing of coating can prevent that vanadium from moving to the interior to the molecule sieve aperture and move, corrode the skeleton of molecular sieve, the combination of molecular sieve that contains vanadium with non-coating is compared, and desulphurizing activated raising is more remarkable.The second, to compare with the disclosed combination of molecular sieve of CN1388220A, combination of molecular sieve provided by the invention also has higher desulphurizing activated.
Embodiment
According to combination of molecular sieve provided by the invention, be benchmark with described combination of molecular sieve, the content of molecular sieve is 75-99 weight %, is preferably 80-99 weight %, the content of coating is 1-25 weight, is preferably 1-20 weight %.
Described coating contains aluminum oxide and metal component.Total amount with described coating is a benchmark, and the content of aluminum oxide is 50-95 weight %, is preferably 60-90 weight %, and in oxide compound, the content of described metal component is 5-50 weight %, is preferably 10-40 weight %.
Under the preferable case, described metal component is selected from one or more in gallium, indium, thallium, germanium, tin, lead, titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, iron, cobalt, nickel, the lanthanide rare metal.Wherein, the lanthanide rare metal is selected from one or more in lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, the lutetium, preferred lanthanum, cerium, lanthanum rich norium or cerium-rich mischmetal metal.
According to embodiment preferred of the present invention, described metal component is selected from one or more the mixture in vanadium or vanadium and titanium, zirconium, iron, the lanthanide rare metal, total amount with coating is a benchmark, the content of aluminum oxide is 60-90 weight %, in oxide compound, the content of vanadium is 10-40 weight %, and the content of the mixture of one or more in titanium, zirconium, iron, the lanthanide rare metal is 0-30 weight %.
According to another one embodiment preferred of the present invention, described metal component is selected from one or more the mixture in vanadium or vanadium and zirconium, iron, titanium, the rare earth metal, described coating also contains alkaline-earth metal, total amount with coating is a benchmark, the content of aluminum oxide is 60-90 weight %, and in oxide compound, the content of vanadium is 10-40 weight %, the content of one or more in titanium, zirconium, iron, the lanthanide rare metal is 0-30 weight %, and the content of alkaline-earth metal is 0-30 weight %.Described alkaline-earth metal is selected from one or more in beryllium, magnesium, calcium, strontium, the barium, preferably magnesium and/or calcium.
In catalyzer provided by the invention, the non-aluminum metal of IIIA family, IVA family metal, IVB family metal, VB family metal, group vib metal, VIIB family metal, VIII family base metal, rare earth metal and alkaline-earth metal can be with its compounds separately, as the state existence of oxide compound, salt.Also can form the compound that contains above-mentioned metal component more than two kinds between each component.
Described molecular screening is from as the zeolite of active component of cracking catalyst and in the non-zeolite molecular sieve one or more.These zeolites and molecular sieve are conventionally known to one of skill in the art.
Described zeolite is preferably one or more in large pore zeolite and the mesopore zeolite.Described large pore zeolite is the zeolite with cavernous structure of at least 0.7 nano-rings opening, as in faujusite, L zeolite, Beta zeolite, omega zeolite, mordenite, the ZSM-18 zeolite one or more, the overstable gamma zeolite of the y-type zeolite of y-type zeolite, phosphorous and/or rare earth, overstable gamma zeolite, phosphorous and/or rare earth particularly, one or more in the Beta zeolite.
Described mesopore zeolite is to have greater than the zeolite of 0.56 nanometer less than the cavernous structure of 0.7 nano-rings opening, as zeolite (as the ZSM-5 zeolite) with MFI structure, in the zeolite with MFI structure (as phosphorous and/or rare earth ZSM-5 zeolite, the zeolite that the disclosed phosphorated of CN1194181A has the MFI structure) of phosphorous and/or rare earth, ZSM-22 zeolite, ZSM-23 zeolite, ZSM-35 zeolite, ZSM-50 zeolite, ZSM-57 zeolite, MCM-22 zeolite, MCM-49 zeolite, the MCM-56 zeolite one or more.
Described non-zeolite molecular sieve refers to that aluminium in the zeolite and/or silicon are partly or entirely by the molecular sieve of one or more replacements in other element such as phosphorus, titanium, gallium, the germanium.These examples of molecular sieve comprise that the silicate with Different Silicon aluminum ratio is (as metal silicate metallosilicate, titanosilicate titanosilicate), metal aluminate metalloaluminates (as germanium aluminate Germaniumaluminates), metal phosphate metallophosphates, aluminate or phosphate aluminophosphates, metallic aluminium phosphoric acid salt metalloaluminophosphates, the aluminosilicophosphate metal integrated silicoaluminophosphates (MeAPSO and ELAPSO) of melts combine, aluminosilicophosphate silicoaluminophosphates (SAPO molecular sieve), in the gallium germanate (gallogermanates) one or more.One or more in SAPO-17 molecular sieve, SAPO-34 molecular sieve and the SAPO-37 molecular sieve particularly.
Under the preferable case, described molecular screening one or more in the zeolite with MFI structure of overstable gamma zeolite, the Beta zeolite of the y-type zeolite of y-type zeolite, phosphorous and/or rare earth, overstable gamma zeolite, phosphorous and/or rare earth, zeolite, phosphorous and/or rare earth with MFI structure.
According to method provided by the invention, described hydrated aluminum oxide is selected from one or more in the various hydrated aluminum oxides, as in boehmite (boehmite), false boehmite (pseudo-boehmite), hibbsite, amorphous hydroted alumina, the aluminium colloidal sol one or more.
The compound of described metal component is selected from one or more in the water-soluble and water-insoluble compound of described metal component.
For example, the non-aluminum metal of IIIA family, IVA family metal, IVB family metal, VB family metal, group vib metal, VIIB family metal, VIII family base metal, rare earth compound can be selected from one or more in the halogenide, nitrate, vitriol, phosphoric acid salt, carbonate, oxyhydroxide, oxide compound, organic acid salt of these metals.
Under the preferable case, described metallic compound is selected from the compound of compound, the nickel of compound, the cobalt of compound, the iron of compound, the tungsten of compound, the molybdenum of compound, the chromium of compound, the tantalum of compound, the niobium of compound, the vanadium of compound, the hafnium of compound, the zirconium of the compound of compound, the tin of compound, the germanium of compound, the thallium of compound, the indium of gallium, plumbous compound, titanium, in the lanthanide rare metallic compound one or more.
More under the preferable case, the compound of described metal component is selected from one or more the mixture in vanadium compound or vanadium compound and titanium compound, zirconium compounds, iron cpd, the lanthanide rare metallic compound, the consumption of each component makes in the composition and contains, total amount with coating is a benchmark, the aluminum oxide of 60-90 weight %, in oxide compound, the vanadium of 10-40 weight %, one or more in the titanium of 0-30 weight %, zirconium, iron, the lanthanide rare metal.
Another one is more under the preferable case, the compound of described metal component is selected from vanadium compound or vanadium compound and titanium compound, zirconium compounds, iron cpd, the mixture of one or more in the lanthanide rare metallic compound, also adopt in described slurries and add alkaline earth metal compounds, perhaps alkaline earth metal compounds and the colloid blended method that obtains are introduced alkaline-earth metal, the consumption of each component makes in the composition and contains, total amount with coating is a benchmark, the aluminum oxide of 60-90 weight %, in oxide compound, the vanadium of 10-40 weight %, the titanium of 0-30 weight %, zirconium, iron, in the lanthanide rare metal one or more and in oxide compound, the alkaline-earth metal of 0-30 weight %.
The compound of described gallium is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound of gallium; The compound of indium is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound of indium; The compound of thallium is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound of thallium; The compound of germanium is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound, germanate of germanium; The compound of tin is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound of tin; Plumbous compound is preferably one or more in plumbous halogenide, nitrate, oxyhydroxide, the oxide compound; The compound of titanium is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound of titanium; The compound of zirconium is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound of zirconium; The compound of hafnium is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound of hafnium; The compound of vanadium is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound, vanadate, metavanadate of vanadium; The compound of niobium is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound of niobium; The compound of tantalum is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound of tantalum; The compound of chromium is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound, chromic salt of chromium; The compound of molybdenum is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound, molybdate salt of molybdenum; The compound of tungsten is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound, tungstate, metatungstate of tungsten; The compound of iron is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound of iron; The compound of cobalt is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound of cobalt; The compound of nickel is preferably one or more in the halogenide, nitrate, oxyhydroxide, oxide compound of nickel; The lanthanide rare metallic compound is preferably halogenide, nitrate, oxyhydroxide, the oxide compound of lanthanum, the halogenide of cerium, nitrate, oxyhydroxide, oxide compound, halogenide, nitrate, oxyhydroxide, the oxide compound of the halogenide of lanthanum rich norium, nitrate, oxyhydroxide, oxide compound or cerium-rich mischmetal metal.
Described alkaline earth metal compound can be selected from one or more in the water-soluble and water-insoluble compound of alkaline-earth metal, as in the halogenide of alkaline-earth metal, nitrate, vitriol, phosphoric acid salt, carbonate, oxyhydroxide, oxide compound, the organic acid salt one or more, be preferably in the halogenide, nitrate, oxyhydroxide, oxide compound of beryllium, magnesium, calcium, strontium, barium one or more.
Described acid is selected from one or more in water-soluble mineral acid and the organic acid, is preferably hydrochloric acid, nitric acid, phosphoric acid, carbonatoms and is in the carboxylic acid of 1-10 one or more.In order to make described hydrated aluminum oxide to the small part peptization, the consumption of acid makes the colloidal pH value that obtains for 1-3, is preferably 1.5-2.5.For the ease of on molecular sieve, forming described coating, it is 5-20 weight % that the compound of hydrated aluminum oxide, metal component, the consumption of water make the colloidal solid content that obtains, and make in the described coating and contain, total amount with described coating is a benchmark, the aluminum oxide of 50-95 weight % and in oxide compound, the metal component of 5-50 weight %.Under the preferable case, making the colloidal solid content that obtains is 10-15 weight %, and makes in the described coating and contain, and is benchmark with the total amount of described coating, the aluminum oxide of 60-90 weight % and in oxide compound, the metal component of 10-40 weight %.
The consumption of described colloid and molecular sieve makes in the combination of molecular sieve that obtains and contains, and is benchmark with described combination of molecular sieve, 75-99 weight %, molecular sieve and the 1-25 weight % of preferred 80-99 weight %, the coating of preferred 1-20 weight %.
The temperature of described roasting is 400-1200 ℃, is preferably 600-900 ℃, and roasting time is at least 0.5 hour, is preferably 0.5-100 hour, more preferred 1-10 hour.The atmosphere of described roasting can be any atmosphere, as air, water vapour or inert atmosphere.
Combination of molecular sieve provided by the invention can be used as the component of desulfurization catalyst or desulfurizing assistant agent and uses.
The following examples will the present invention will be further described.
In the example, REY is the y-type zeolite that contains rare earth, and the Shandong catalyst plant is produced, and rare earth oxide content is 18 weight %, and wherein, lanthanum trioxide content is 5.6 weight %, and cerium oxide content is 9.9 weight %, and other rare earth oxide content is 2.5 weight %, Na 2O content is 1.7 weight %, lattice constant 2.465 nanometers; The ZSM-5 zeolite is a kind of zeolite with MFI structure, and the Lanzhou catalyst plant is produced, SiO 2With Al 2O 3Mol ratio is 60; REUSY is a kind of overstable gamma zeolite that contains rare earth, and the Chang Ling catalyst plant is produced, and rare earth oxide content is 10.6 weight %, and wherein, lanthanum trioxide content is 3.4 weight %, and cerium oxide content is 5.9 weight %, and other rare earth oxide content is 1.3 weight %, Na 2O content is 2.0 weight %, and lattice constant is 2.461 nanometers; USY is a kind of overstable gamma zeolite, and the Chang Ling catalyst plant is produced, and lattice constant is 2.451 nanometers; The ZRP-1 zeolite is a kind of zeolite with MFI structure of phosphorous and rare earth, and the Chang Ling catalyst plant is produced, SiO 2With Al 2O 3Mol ratio is 60, with P 2O 5Meter, phosphorus content is 2.7 weight %, and rare earth oxide content is 1.5 weight %, and wherein, lanthanum trioxide content is 0.47 weight %, and cerium oxide content is weight 0.80%, other rare earth oxide content is 0.23 weight %; The lattice constant of HY zeolite is 2.465 nanometers, Na 2O content is 0.5 weight %, and the Chang Ling catalyst plant is produced; The SiO of Beta zeolite 2With Al 2O 3Mol ratio is 60, Na 2O content is 0.2 weight %, and the Chang Ling catalyst plant is produced; The alumina content of used pseudo-boehmite is 61 weight %, and Shandong Aluminum Plant produces; The alumina content of aluminium colloidal sol is 21.5 weight %, and Shandong Aluminum Plant produces; Kaolinic solid content is 76 weight %, and kaolin company in Suzhou produces; The solid content of polynite is 95 weight %, and Zhejiang Feng Hong clay chemical industry company limited produces; Used metal component compound and alkaline earth metal compound are chemical pure.
Embodiment 1-2
This example illustrates combination of molecular sieve provided by the invention and preparation method thereof.
1. magnesium nitrate is dissolved in the deionized water, make the magnesium nitrate solution that concentration is 50 weight %, be that the ammoniacal liquor of 25 weight % transfers to 8.0 with system pH and makes it to form precipitation under agitation with concentration, filter, be not detected to there being nitrate ion, must contain the magnesium hydroxide filter cake of MgO39 weight % with deionized water wash.
2. respectively with after different metal component compounds and pseudo-boehmite, deionized water mixing and stirring, obtain a kind of slurries, in slurries, add acid, continue to stir 3 hours, make the pseudo-boehmite peptization, mix with the magnesium hydroxide filter cake that contains MgO39 weight % then, obtain a kind of colloid.
3. the colloid that obtains is mixed with molecular sieve, roasting obtains combination of molecular sieve Z1-Z2 provided by the invention.
Table 1 has provided the kind of metal component compound and consumption, the consumption of pseudo-boehmite, the consumption that contains the magnesium hydroxide filter cake of MgO39 weight %, the consumption of deionized water.Table 2 has provided kind, colloidal pH value and the colloidal solid content of used acid.Table 3 has provided colloidal consumption, the kind of molecular sieve and the temperature and time of consumption and roasting.Table 4 has provided the composition of coating.Table 5 has provided the composition of combination of molecular sieve Z1-Z2.The composition of described colloidal solid content, coating and the composition of combination of molecular sieve are by calculating.
Example 3
This example illustrates combination of molecular sieve provided by the invention and preparation method thereof.
1. with after metal component compound, Calcium Chloride Powder Anhydrous, pseudo-boehmite and deionized water mixing and stirring, obtain a kind of slurries, in slurries, add acid, continue to stir 3 hours, make the pseudo-boehmite peptization, obtain a kind of colloid.
2. the colloid that obtains is mixed with molecular sieve, roasting obtains combination of molecular sieve Z3 provided by the invention.
Table 1 has provided the kind of metal component compound and consumption, the consumption of pseudo-boehmite, the consumption of Calcium Chloride Powder Anhydrous, the consumption of deionized water.Table 2 has provided kind, colloidal pH value and the colloidal solid content of used acid.Table 3 has provided colloidal consumption, the kind of molecular sieve and the temperature and time of consumption and roasting.Table 4 has provided the composition of coating.Table 5 has provided the composition of combination of molecular sieve Z3.
Example 4-9
Following example illustrates combination of molecular sieve provided by the invention and preparation method thereof.
1. with after metal component compound, pseudo-boehmite and deionized water mixing and stirring, obtain a kind of slurries, in slurries, add acid, continue to stir 2 hours, make the pseudo-boehmite peptization obtain a kind of colloid.
2. the colloid that obtains is mixed with molecular sieve, roasting obtains combination of molecular sieve Z4-Z9 provided by the invention.
Table 1 has provided the kind of metal component compound and consumption, the consumption of pseudo-boehmite, the consumption of deionized water.Table 2 has provided kind, colloidal pH value and the colloidal solid content of used acid.Table 3 has provided colloidal consumption, the kind of molecular sieve and the temperature and time of consumption and roasting.Table 4 has provided the composition of coating.Table 5 has provided the composition of combination of molecular sieve Z4-Z9.The composition of described colloidal solid content, coating and the composition of combination of molecular sieve are by calculating.
Table 1
Example number The kind of metal component compound and consumption The consumption of pseudo-boehmite, gram The kind of alkali metal compound and consumption The consumption of deionized water, gram
??1 Ammonium meta-vanadate, 12.8 grams 131 The magnesium hydroxide filter cake that contains MgO39 weight %, 25.6 grams 402
??2 Ammonium meta-vanadate, 32.1 grams, REClx, 14.7 grams * 98.4 The magnesium hydroxide filter cake that contains MgO39 weight %, 12.8 grams 402
??3 Ammonium meta-vanadate, 19.3 grams 115 Calcium Chloride Powder Anhydrous, 29.7 grams 585
??4 Ammonium meta-vanadate, 25.7 grams, ZrOCl 2, 14.5 grams 115 - 468
??5 Ammonium meta-vanadate, 12.9 grams, Fe 2(NO 3) 3, 9.32 grams 139 - 569
??6 Ammonium meta-vanadate, 32.1 grams, LaCl 3, 24.8 grams 98.4 - 402
??7 GaCl 3, 56.4 grams 114.8 - 469
??8 SnCl 2, 51.9 grams 114.8 - 469
??9 Ammonium metawolframate, 32.7 grams 114.8 - 469
*(REClx is a mixed rare earth chlorides, and per 100 gram REClx can change into mixed rare-earth oxide 67.8 grams, and per 100 gram rare earth oxides contain lanthanum trioxide 31 grams, cerium oxide 53 grams, other rare-earth oxide 16 grams).
Table 2
Example number The kind of acid Colloidal pH value The colloidal solid content, weight %
1 Concentration is the hydrochloric acid of 36 weight % 2.2 15
2 Concentration is the hydrochloric acid of 36 weight % 2.0 12
3 Concentration is rare nitric acid of 60 weight % 1.6 10
4 Concentration is the hydrochloric acid of 36 weight % 1.8 12
5 Concentration is the phosphoric acid of 85 weight % 1.8 12
6 Concentration is the hydrochloric acid of 36 weight % 1.6 12
7 Concentration is the acetate of 98 weight % 2.0 12
8 Concentration is the hydrochloric acid of 36 weight % 2.1 12
9 Concentration is the hydrochloric acid of 36 weight % 1.8 12
Table 3
Example number The colloidal consumption, gram The kind of molecular sieve and consumption Maturing temperature, ℃ Roasting time, hour
1 ????100 REY, 85 grams ?750 ??6
2 ????83.3 REY, 85 grams, ZSM-5,5 grams ?800 ??4
3 ????100 REHY, 90 grams ?850 ??1.5
4 ????66.7 REUSY, 92 grams ?700 ??8
5 ????41.7 USY, 95 grams ?900 ??1
6 ????16.7 USY, 93 grams, ZRP-1,5 grams ?800 ??2
7 ????100 HY, 78 grams, Beta zeolite, 10 grams ?650 ??10
8 ????50 USY, 84 grams, ZSM-5,10 grams ?700 ??5
9 ????33.3 REY, 96 grams ?650 ??4
Table 4
Example number Metal species and in the metal content of oxide compound, weight % Alkali-metal kind and in the alkali metal content of oxide compound, weight % Alumina content, weight %
1 V,10 Mg,10 ??80
2 V,25;RE,10 Mg,5 ??60
3 V,15 Ca,15 ??70
4 V,20;Zr,10 - ??70
5 V,10;Fe,5 - ??85
6 V,25;La,15 - ??60
7 Ga,30 - ??70
8 Sn,30 - ??70
9 W,30 - ??70
Table 5
Example number The combination of molecular sieve numbering Molecular sieve content, weight % Coating levels, weight %
1 ?Z1 85 ??15
2 ?Z2 90 ??10
3 ?Z3 90 ??10
4 ?Z4 92 ??8
5 ?Z5 95 ??5
6 ?Z6 98 ??2
7 ?Z7 88 ??12
8 ?Z8 94 ??6
9 ?Z9 96 ??4
Comparative Examples 1
This Comparative Examples illustrates non-coating reference combination of molecular sieve and preparation method thereof.
Contain V with 50 grams 2O 53.0 the ammonium metavanadate aqueous solution of weight % dipping 97 gram examples 3 described REHY zeolites, 120 ℃ of oven dry, the calcium chloride water dipping that contains calcium oxide 3.0 weight % again with 50 grams again 850 ℃ roasting temperature 1.5 hours, obtains containing the reference combination of molecular sieve ZB1 of vanadium and calcium.The content of vanadium and calcium is identical with Z3 among the ZB1.
Comparative Examples 2
This Comparative Examples illustrates non-coating reference combination of molecular sieve and preparation method thereof.
1. contain V with 250 grams 2O 53.0 the ammonium metavanadate aqueous solution of weight % dipping 450 gram examples 3 described REHY zeolites, 120 ℃ of oven dry restrain the calcium chloride water dipping that contains calcium oxide weight 3.0 weight % with 250 again, and 120 ℃ of dryings obtain a kind of REHY zeolite that contains vanadium and calcium.
2. with after 57.4 gram pseudo-boehmites and deionized water mixing and stirring, obtain a kind of slurries, adding concentration in slurries is rare nitric acid of 60 weight %, continues to stir 3 hours, makes the pseudo-boehmite peptization, obtains a kind of colloid.
3. the whole REHY zeolites that contain vanadium and calcium with this Comparative Examples (1) preparation mix with whole colloids that this Comparative Examples (2) prepares, and press example 3 described condition roastings, obtain reference combination of molecular sieve ZB2.The content of vanadium, calcium, aluminum oxide and molecular sieve is identical with Z3 among the ZB2.
Comparative Examples 3
This Comparative Examples illustrates non-coating reference combination of molecular sieve and preparation method thereof.
With 60 gram V 2O 5Content is the ammonium metavanadate aqueous solution dipping 114.8 gram pseudo-boehmites of 25 weight %, 120 ℃ of oven dry, restrain the calcium chloride water that contains calcium oxide weight 30 weight % with 50 again and flood the pseudo-boehmite that contains vanadium that obtains,, obtain containing the aluminum oxide of vanadium and calcium 850 ℃ of roastings 1.5 hours.This aluminum oxide that contains vanadium and calcium is formed identical with the described coating of Z3.
With 90 gram REHY zeolites and the above-mentioned aluminum oxide physical mixed that contains vanadium and calcium that obtains of 10 grams, obtain reference combination of molecular sieve ZB4, the content of vanadium, calcium, aluminum oxide and molecular sieve is identical with Z3 among the ZB4.
Comparative Examples 4
Disclosed combination of molecular sieve of this Comparative Examples explanation CN1388220A and preparation method thereof.
Method by example among the CN1388220A 2 prepares combination of molecular sieve, obtains reference combination of molecular sieve ZB4, and ZB4 contains coating and the molecular sieve with example 3 same amount, described coating consist of ZnO40.8 weight %, TiO 28.4 weight % and Al 2O 350.8 weight %.
Embodiment 10-18
Following example explanation contains cracking catalyst of combination of molecular sieve provided by the invention and preparation method thereof.
Respectively with combination of molecular sieve, deionized water, pseudo-boehmite and/or the aluminium colloidal sol of example 1-9 preparation, sometimes also has the clay making beating, drying is broken into the particle of 20-150 micron then, obtains containing the cracking catalyst C1-C9 of combination of molecular sieve provided by the invention.Table 6 has provided kind and the consumption and the drying temperature of combination of molecular sieve, deionized water, pseudo-boehmite, aluminium colloidal sol, clay, and table 7 has provided the composition of C1-C9.
Comparative Examples 5-8
Following Comparative Examples explanation contains cracking catalyst of reference combination of molecular sieve and preparation method thereof.
Method by example 12 prepares cracking catalyst, and different is to replace Z3 with ZB1, ZB2, ZB3 and ZB4 respectively, obtains reference catalyst CB1, CB2, CB3 and CB4.Table 7 has provided the composition of CB1, CB2, CB3 and CB4.
Table 6
Example number The catalyzer numbering Combination of molecular sieve kind and consumption The kind of clay and consumption, gram The pseudo-boehmite consumption, gram Aluminium colloidal sol consumption, gram The deionized water consumption, gram Drying temperature, ℃
10 C1 Z1,50 grams Kaolin, 23.7 ??32.8 ??55.8 ??238 ??275
11 C2 Z2,40 grams Kaolin, 32.9 ??41.0 ??46.5 ??240 ??250
12 C3 Z3,55 grams Kaolin, 13.2 ??32.8 ??69.8 ??229 ??300
Comparative Examples 5 CB1 ZB1,55 grams Kaolin, 13.2 ??32.8 ??69.8 ??229 ??300
Comparative Examples 6 CB2 ZB2,55 grams Kaolin, 13.2 ??32.8 ??69.8 ??229 ??300
Comparative Examples 7 CB3 ZB3,55 grams Kaolin, 13.2 ??32.8 ??69.8 ??229 ??300
Comparative Examples 8 CB4 ZB4,55 grams Kaolin, 13.2 ??32.8 ??69.8 ??229 ??300
13 C4 Z4,30 grams Kaolin, 44.7 ??49.2 ??27.9 ??248 ??230
14 C5 Z5,60 grams 0 ??32.8 ??93.0 ??214 ??320
15 C6 Z6,65 grams Kaolin, 19.7 ??0.0 ??93.0 ??222 ??320
16 C7 Z7,15 grams Polynite, 52.6 ??49.2 ??23.3 ??260 ??200
17 C8 Z8,25 grams Kaolin, 38.2 ??65.6 ??27.9 ??243 ??150
18 C9 Z9,35 grams Kaolin, 28.9 ??57.4 ??37.2 ??241 ??190
Table 7
Example number The catalyzer numbering Combination of molecular sieve kind and content, weight % The kind of clay and content, weight % Alumina content, weight %
??10 C1 Z1,50 Kaolin, 18 ??32
??11 C2 Z2,40 Kaolin, 25 ??35
??12 C3 Z3,55 Kaolin, 10 ??35
Comparative Examples 5 CB1 ZB1,55 Kaolin, 10 ??35
Comparative Examples 6 CB2 ZB2,55 Kaolin, 10 ??35
Comparative Examples 7 CB3 ZB3,55 Kaolin, 10 ??35
Comparative Examples 8 CB4 ZB4,55 Kaolin, 10 ??35
??13 C4 Z4,30 Kaolin, 34 ??36
??14 C5 Z5,60 ??0 ??40
??15 C6 Z6,65 Kaolin, 15 ??20
??16 C7 Z7,15 Polynite, 50 ??35
??17 C8 Z8,25 Kaolin, 29 ??46
??18 C9 Z9,35 Kaolin, 22 ??43
Embodiment 19-27
Following example explanation contains the catalytic performance of the cracking catalyst of combination of molecular sieve provided by the invention.
With catalyzer C1-C9 at 800 ℃, wore out 8 hours with 100% water vapour, on small fixed flowing bed, with the sulphur content shown in the catalyzer C1-C9 catalytic cracking table 8 after aging is the long residuum of 1.39 weight % and the mixing oil of decompressed wax oil, the catalyzer loading amount is 120 grams, and reaction conditions is shown among the 9-11 with the results are shown in.Wherein, the sulphur content of gasoline adopts micro-coulometric determination.
Comparative Examples 9-12
The catalytic performance of following Comparative Examples explanation reference catalyst.
Method by example 21 is carried out catalytic cracking to same stock oil, and different is, catalyst system therefor is respectively CB1, CB2, CB3 and CB4, reaction conditions and the results are shown in Table 9.
Table 8
The stock oil title The mixing oil of long residuum and decompressed wax oil
Density, gram per centimeter 3 ????0.9057
Viscosity, millimeter 2/ second (80 ℃) ????11.60
Carbon residue, weight % ????<0.02
Stable hydrocarbon, weight % aromatic hydrocarbons, weight % colloid, weight % bituminous matter, weight % ????66.3 ????27.2 ????6.5 ????0
C, weight % H, weight % S, weight % N, weight % ????85.97 ????12.39 ????1.39 ????0.10
Boiling range, ℃ IBP 30% 50% 70% 95% ? ????294 ????419 ????444 ????470 ????522
Table 9
Example number ??21 Comparative Examples 9 Comparative Examples 10 Comparative Examples 11 Comparative Examples 12
Catalyzer ??C3 ??CB1 ??CB2 ??CB3 ??CB4
Temperature of reaction, ℃ ??500 ??500 ??500 ??500 ??500
Agent weight of oil ratio ??3.0 ??3.0 ??3.0 ??3.0 ??3.0
Weight hourly space velocity, hour -1 ??20 ??20 ??20 ??20 ??20
Transformation efficiency, weight % ??78.8 ??12.9 ??14.7 ??79.6 ??78.5
Product is formed, weight % dry gas liquefied gas gasoline, diesel heavy oil coke ? ??2.5 ??12.8 ??57.9 ??15.9 ??5.3 ??5.6 ? ??0.4 ??2.2 ??9.1 ??2.1 ??85.0 ??1.2 ? ??0.6 ??2.1 ??10.6 ??2.8 ??82.5 ??1.4 ? ??2.0 ??13.2 ??59.2 ??15.0 ??5.4 ??5.2 ? ??2.3 ??12.6 ??58.2 ??16.0 ??5.5 ??5.4
Content of sulfur in gasoline, micrograms per litre ??158 ??906 ??878 ??485 ??346
Table 10
Implement numbering ????19 ????20 ????22 ????23
Catalyzer ????C1 ????C2 ????C4 ????C5
Temperature of reaction, ℃ ????520 ????520 ????460 ????460
Agent weight of oil ratio ????3.0 ????2.0 ????3.5 ????4.0
Weight hourly space velocity, hour -1 ????15 ????10 ????20 ????20
Transformation efficiency, weight % ????79.1 ????74.5 ????70.6 ????75.4
Product is formed, weight % dry gas liquefied gas gasoline, diesel heavy oil coke ? ????2.4 ????13.1 ????58.8 ????15.5 ????5.4 ????4.8 ? ????2.8 ????13.6 ????53.5 ????19.7 ????5.8 ????4.6 ? ????1.8 ????12.8 ????51.4 ????23.3 ????6.1 ????4.6 ? ????2.1 ????13.2 ????55.2 ????18.9 ????5.7 ????4.9
Content of sulfur in gasoline, micrograms per litre ????167 ????140 ????219 ????233
Table 11
Implement numbering ??24 ??25 ????26 ??27
Catalyzer ??C6 ??C7 ????C8 ??C9
Temperature of reaction, ℃ ??500 ??540 ????480 ??520
Agent weight of oil ratio ??2.5 ??10.0 ????7.5 ??4.5
Weight hourly space velocity, hour -1 ??10 ??15 ????18 ??12
Transformation efficiency, weight % ??83.0 ??78.3 ????75.2 ??74.7
Product is formed, weight % dry gas liquefied gas gasoline, diesel heavy oil coke ? ??2.6 ??13.9 ??60.4 ??11.8 ??5.2 ??6.1 ? ??2.8 ??14.4 ??54 ??13.9 ??7.8 ??7.1 ? ????2.4 ????14.6 ????51.7 ????16.7 ????8.1 ????6.5 ? ??2.3 ??13.2 ??54.1 ??19.7 ??5.6 ??5.1
Content of sulfur in gasoline, micrograms per litre ??162 ??314 ????335 ??375
From the result of table 9 as can be seen, compare, contain the desulphurizing activated obvious raising of the cracking catalyst of combination of molecular sieve provided by the invention with the cracking catalyst of the reference combination of molecular sieve that contains same amount.This explanation is compared with having combination of molecular sieve now, and combination of molecular sieve provided by the invention has higher desulphurizing activated.It is higher desulphurizing activated that the result of table 10-11 shows that equally combination of molecular sieve provided by the invention has.
Example 28-36
Following example illustrates the catalytic performance of combination of molecular sieve provided by the invention.
Method by example 21 is carried out catalytic cracking to same stock oil, different is, catalyst system therefor is respectively uses 100% water vapour, at 800 ℃ of catalyst mixtures of aging 8 hours, this catalyst mixture (being designated as X1-X9) contains industrial cracking catalyst and the catalyzer C1-C9 that the industrial trade mark is CC-20D respectively.Catalyst mixture, reaction conditions is shown among the 12-13 with the results are shown in.
Wherein, X1 is the mixture of 90 weight %CC-20D and 10 weight %C1, X2 is the mixture of 85 weight %CC-20D and 15 weight %C2, X3 is the mixture of 80 weight %CC-20D and 20 weight %C3, X4 is the mixture of 75 weight %CC-20D and 25 weight %C4, X5 is the mixture of 95 weight %CC-20D and 5 weight %C5, X6 is the mixture of 70 weight %CC-20D and 30 weight %C6, X7 is the mixture of 60 weight %CC-20D and 40 weight %C7, X8 is the mixture of 65 weight %CC-20D and 35 weight %C8, and X9 is the mixture of 65 weight %CC-20D and 35 weight %C9.
Comparative Examples 13
The situation of commercial catalysts CC-20D is only used in following Comparative Examples explanation.
Method by example 21 is carried out catalytic cracking to same stock oil, and different is, catalyst system therefor is the industrial cracking catalyst of CC-20D for use 100% water vapour at 800 ℃ of industrial trades mark of aging 8 hours, and reaction conditions is with the results are shown in Table 13.
Table 12
Implement numbering ??28 ??29 ??30 ??31 ??32
Catalyst mixture ??X1 ??X2 ??X3 ??X4 ??X5
Temperature of reaction, ℃ ??500 ??540 ??500 ??480 ??520
Agent weight of oil ratio ??2.5 ??3.0 ??3.0 ??3.5 ??4.5
Weight hourly space velocity, hour -1 ??10 ??15 ??20 ??18 ??12
Transformation efficiency, weight % ??75.2 ??75.8 ??76.0 ??73.4 ??78.5
Product is formed, weight % dry gas liquefied gas gasoline, diesel heavy oil coke ? ??2.4 ??12.9 ??55.0 ??19.6 ??5.2 ??4.9 ? ??2.6 ??13.2 ??55.2 ??18.8 ??5.4 ??4.8 ? ??2.5 ??13.5 ??54.9 ??18.6 ??5.4 ??5.1 ? ??2.1 ??12.5 ??54.2 ??21.3 ??5.3 ??4.6 ? ??2.7 ??13.3 ??57.1 ??15.8 ??5.7 ??5.4
Content of sulfur in gasoline, micrograms per litre ??204 ??186 ??197 ??229 ??380
Table 13
Implement numbering ??33 ??34 ?35 ?36 Comparative Examples 13
Catalyst mixture ??X6 ??X7 ?X8 ?X9 ?CC-20D
Temperature of reaction, ℃ ??520 ??520 ?460 ?480 ?500
Agent weight of oil ratio ??3.0 ??4.0 ?4.5 ?4.0 ?3.0
Weight hourly space velocity, hour -1 ??15 ??10 ?15 ?20 ?20
Transformation efficiency, weight % ??79.6 ??78.4 ?76.7 ?79.2 ?74.9
Product is formed, weight % dry gas liquefied gas gasoline, diesel heavy oil coke ? ??3.0 ??13.4 ??58.1 ??15.2 ??5.2 ??5.1 ? ??3.1 ??13.6 ??56 ??14.8 ??6.8 ??5.7 ? ?2.8 ?13 ?55.1 ?16.9 ?6.4 ?5.8 ? ?3.2 ?13.7 ?56.1 ?16.3 ?4.5 ?6.2 ? ?2.7 ?12.9 ?54.6 ?19.4 ?5.7 ?4.7
Content of sulfur in gasoline, micrograms per litre ??172 ??367 ?372 ?325 ?836
From the result of table 12-13 as can be seen, the catalyzer that will contain the combination of molecular sieve that this aspect provides uses as desulfurizing assistant agent, can reduce the sulphur content in the gasoline significantly, and the composition structure of crackate is not caused obvious influence.

Claims (18)

1. combination of molecular sieve with desulfidation, said composition contains molecular sieve and is covered in the coating on this molecular sieve surface, it is characterized in that, and be benchmark with described combination of molecular sieve, the content of molecular sieve is 75-99 weight %, and the content of coating is 1-25 weight %; Described coating contains aluminum oxide and metal component; Total amount with described coating is a benchmark, and the content of aluminum oxide is 50-95 weight %, and in oxide compound, the content of described metal component is 5-50 weight %; Described metal component is selected from one or more in the non-aluminum metal of IIIA family, IVA family metal, IVB family metal, VB family metal, group vib metal, VIIB family metal, VIII family base metal and the rare earth metal.
2. composition according to claim 1 is characterized in that, is benchmark with described combination of molecular sieve, and the content of molecular sieve is 80-99 weight %, and the content of coating is 1-20 weight %.
3. composition according to claim 1 is characterized in that, is benchmark with the total amount of described coating, and the content of aluminum oxide is 60-90 weight %, and in oxide compound, the content of described metal component is 10-40 weight %.
4. according to claim 1 or 3 described compositions, it is characterized in that described metal component is selected from one or more in gallium, indium, thallium, germanium, tin, lead, titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, iron, cobalt, nickel, the lanthanide rare metal.
5. composition according to claim 4, it is characterized in that, described metal component is selected from one or more the mixture in vanadium or vanadium and titanium, zirconium, iron, the lanthanide rare metal, total amount with coating is a benchmark, the content of aluminum oxide is 60-90 weight %, in oxide compound, the content of vanadium is 10-40 weight %, and the content of one or more in titanium, zirconium, iron, the lanthanide rare metal is 0-30 weight %.
6. composition according to claim 4, it is characterized in that, described metal component is selected from one or more the mixture in vanadium or vanadium and zirconium, iron, titanium, the rare earth metal, described coating also contains alkaline-earth metal, is benchmark with the total amount of coating, and the content of aluminum oxide is 60-90 weight %, in oxide compound, the content of vanadium is 10-40 weight %, and the content of one or more in titanium, zirconium, iron, the lanthanide rare metal is 0-30 weight %, and the content of alkaline-earth metal is 0-30 weight %.
7. composition according to claim 6 is characterized in that described alkaline-earth metal is selected from magnesium and/or calcium.
8. composition according to claim 1 and 2 is characterized in that, described molecular screening is from as the zeolite of active component of cracking catalyst and in the non-zeolite molecular sieve one or more.
9. composition according to claim 8 is characterized in that described zeolite is selected from one or more in large pore zeolite and the mesopore zeolite.
10. composition according to claim 9 is characterized in that, described large pore zeolite is selected from one or more in faujusite, L zeolite, Beta zeolite, omega zeolite, mordenite, the ZSM-18 zeolite.
11. composition according to claim 9, it is characterized in that, described mesopore zeolite is selected from the zeolite with MFI structure, one or more in the zeolite with MFI structure of phosphorous and/or rare earth, ZSM-22 zeolite, ZSM-23 zeolite, ZSM-35 zeolite, ZSM-50 zeolite, ZSM-57 zeolite, MCM-22 zeolite, MCM-49 zeolite, the MCM-56 zeolite.
12. composition according to claim 8, it is characterized in that described molecular screening one or more in the zeolite with MFI structure of overstable gamma zeolite, the Beta zeolite of the y-type zeolite of y-type zeolite, phosphorous and/or rare earth, overstable gamma zeolite, phosphorous and/or rare earth, zeolite, phosphorous and/or rare earth with MFI structure.
13. claim 1 preparation of compositions method, this method is included in a kind of hydration aluminum oxide that contains, add a kind of acid in the compound of metal component and the slurries of water, make partially hydrated at least aluminum oxide peptization, obtain a kind of colloid, the colloid that obtains is mixed with molecular sieve and roasting, it is characterized in that the compound of described metal component is selected from the non-aluminum metallization compound of IIIA family, IVA family metallic compound, IVB family metallic compound, VB family metallic compound, the group vib metallic compound, VIIB family metallic compound, in VIII family non-noble metal compound and the rare earth compound one or more; The consumption of the compound of described hydrated aluminum oxide, metal component, water and acid makes in the described coating and contains, total amount with described coating is a benchmark, the aluminum oxide of 50-95 weight % and in oxide compound, the metal component of 5-50 weight %, the consumption of described colloid and molecular sieve makes in the combination of molecular sieve that obtains and contains, with described combination of molecular sieve is benchmark, the coating of the molecular sieve of 75-99 weight % and 1-25 weight %.
14. method according to claim 13, it is characterized in that the compound of described metal component is selected from the compound of compound, the nickel of compound, the cobalt of compound, the iron of compound, the tungsten of compound, the molybdenum of compound, the chromium of compound, the tantalum of compound, the niobium of compound, the vanadium of compound, the hafnium of compound, the zirconium of the compound of compound, the tin of compound, the germanium of compound, the thallium of the compound of gallium, indium, plumbous compound, titanium, in the lanthanide rare metallic compound one or more.
15. method according to claim 14, it is characterized in that, the compound of described metal component is selected from one or more the mixture in vanadium compound or vanadium compound and titanium compound, zirconium compounds, iron cpd, the lanthanide rare metallic compound, the consumption of each component makes in the composition and contains, total amount with coating is a benchmark, and the aluminum oxide of 60-90 weight % is in oxide compound, the vanadium of 10-40 weight %, one or more in the titanium of 0-30 weight %, zirconium, iron, the lanthanide rare metal.
16. method according to claim 14, it is characterized in that, the compound of described metal component is selected from vanadium compound or vanadium compound and titanium compound, zirconium compounds, iron cpd, the mixture of one or more in the lanthanide rare metallic compound, also adopt and in described slurries, also add alkaline earth metal compounds, perhaps alkaline earth metal compounds and the colloid blended method that obtains are introduced alkaline earth metal compound, the consumption of each component makes in the composition and contains, total amount with coating is a benchmark, the aluminum oxide of 60-90 weight %, in oxide compound, the vanadium of 10-40 weight %, the titanium of 0-30 weight %, zirconium, iron, in the lanthanide rare metal one or more and in oxide compound, the alkaline-earth metal of 0-30 weight %.
17. method according to claim 13 is characterized in that, described acid is selected from one or more in the carboxylic acid that hydrochloric acid, nitric acid, phosphoric acid, carbonatoms are 1-10, and it is 1-3 that the consumption of acid makes the colloidal pH value that obtains.
18. method according to claim 13 is characterized in that, the temperature of described roasting is 400-1200 ℃, and roasting time is at least 0.5 hour.
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