US20070029228A1 - Hydrocracking catalyst and process for producing liquid hydrocarbon - Google Patents
Hydrocracking catalyst and process for producing liquid hydrocarbon Download PDFInfo
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- US20070029228A1 US20070029228A1 US11/532,640 US53264006A US2007029228A1 US 20070029228 A1 US20070029228 A1 US 20070029228A1 US 53264006 A US53264006 A US 53264006A US 2007029228 A1 US2007029228 A1 US 2007029228A1
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- catalyst
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- hydrocracking
- alumina
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- 239000003054 catalyst Substances 0.000 title claims abstract description 45
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 35
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 35
- 238000004517 catalytic hydrocracking Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims description 23
- 239000004215 Carbon black (E152) Substances 0.000 title claims description 18
- 230000008569 process Effects 0.000 title claims description 18
- 239000007788 liquid Substances 0.000 title claims description 10
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910000323 aluminium silicate Inorganic materials 0.000 claims abstract description 19
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 9
- 230000000737 periodic effect Effects 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims description 7
- 238000005336 cracking Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 18
- 239000007789 gas Substances 0.000 description 16
- 239000003921 oil Substances 0.000 description 16
- 238000009835 boiling Methods 0.000 description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 10
- 239000010457 zeolite Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 229910052697 platinum Inorganic materials 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 229910021536 Zeolite Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- 125000004429 atom Chemical group 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 239000001993 wax Substances 0.000 description 4
- 229910052763 palladium Inorganic materials 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 238000004910 27Al NMR spectroscopy Methods 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052680 mordenite Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- HRGDZIGMBDGFTC-UHFFFAOYSA-N platinum(2+) Chemical compound [Pt+2] HRGDZIGMBDGFTC-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011973 solid acid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
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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
- 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
- B01J29/064—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof containing iron group metals, noble metals or copper
- B01J29/068—Noble metals
-
- 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
- B01J29/08—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y
- B01J29/10—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the faujasite type, e.g. type X or Y containing iron group metals, noble metals or copper
- B01J29/12—Noble metals
- B01J29/126—Y-type faujasite
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
-
- 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
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/10—After treatment, characterised by the effect to be obtained
- B01J2229/20—After treatment, characterised by the effect to be obtained to introduce other elements in the catalyst composition comprising the molecular sieve, but not specially in or on the molecular sieve itself
-
- 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
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/30—After treatment, characterised by the means used
- B01J2229/42—Addition of matrix or binder particles
-
- 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
- B01J29/18—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type
- B01J29/20—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type containing iron group metals, noble metals or copper
- B01J29/22—Noble metals
-
- 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
- B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
- B01J29/42—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively containing iron group metals, noble metals or copper
- B01J29/44—Noble metals
-
- 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
- B01J29/72—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65 containing iron group metals, noble metals or copper
- B01J29/74—Noble metals
- B01J29/7415—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
- 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
-
- 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
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/06—Gasoil
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Catalysts (AREA)
Abstract
Provided is a catalyst for hydrocracking paraffinic hydrocarbons which provides satisfactorily high cracking activity and middle distillate yield as well as the low pour point of the resulting gas oil all together. The catalyst of the present invention comprises a crystalline aluminosilicate, alumina-boria and a noble metal of Group VIII of the Periodic Table.
Description
- This application is a Continuation of International Application No. PCT/JP2005/004728, filed Mar. 10, 2005, which was published in the Japanese language on Oct. 6, 2005, under International Publication No. WO 2005/092500 A1 and the disclosure of which is incorporated herein by reference.
- The present invention relates to a catalyst for producing liquid hydrocarbons from paraffinic hydrocarbons in the presence of hydrogen and a process for producing liquid hydrocarbons using such a catalyst.
- In recent years, demands have been escalating rapidly toward a clean liquid fuel which is low in contents of sulfur and aromatic hydrocarbons. In response to such demands, fuel oil manufacturers have already been studying various processes for producing clean fuel. Among these, a process has been considered to be the most prospective in which process paraffinic hydrocarbons such as waxes are hydrocracked in the presence of a catalyst.
- In a process of hydrocracking of a paraffinic hydrocarbon, it is important to produce useful middle distillates at higher yields in order to improve the economical efficiency of the process. In addition, the resulting gas oil is necessarily low in pour point. That is, development of a highly efficient hydrocracking catalyst which can enhance the cracking activity and middle distillate yield of the hydrocracking process and can render the process possible to produce a gas oil with low pour point holds the key to an improvement of economical efficiency of the process.
- Hydrocracking of a vacuum gas oil has already been commercialized and is a technology which has been established for more than decades. However, since the difference between the reactivity of a paraffinic hydrocarbon and that of a vacuum gas oil is so significant that it is difficult to use the catalyst for the latter as it is for hydrocracking a paraffinic hydrocarbon, the research and development have been continued vigorously to aim development of a highly efficient catalyst for paraffinic hydrocarbons. There are a few but some patents and reports concerning such a catalyst. For example, Patent Document 1 below discloses a catalyst comprising platinum loaded into a support containing silica alumina. There is an example of a study in Non-Patent Document 1 wherein the hydrocracking of a paraffinic hydrocarbon was carried out using a catalyst comprising platinum loaded into a crystalline aluminosilicate (zeolite).
- However, the crystalline aluminosilicate catalyst is at a satisfactorily higher level of the cracking activity but has disadvantages that the middle distillate yield is low and the resulting gas oil fails to obtain a sufficient pour point. On the other hand, amorphous solid acid catalysts a typical example of which is silica alumina are at satisfactorily higher level in middle distillate yield and the pour point of the resulting gas oil but low in cracking activity. That is, there has not been developed a catalyst which satisfies high cracking activity and middle distillate yield as well as the low pour point of the resulting gas oil all together, resulting in a serious hindrance to an improvement of economical efficiency of the hydrocracking process of paraffinic hydrocarbons.
- (1) Patent Document 1: Japanese Patent Laid-Open Publication No. 6-41549
- (2) Non-Patent Document 2: “Zeolite” (Volume 6, page 334 to 348, 1986)
- The present invention has an object to provide a novel catalyst for hydrocracking paraffinic hydrocarbons which can satisfy higher cracking activity and middle distillate yield and the lower pour point of the resulting gas oil all together thereby improving the productivity of the hydrocracking process.
- As a result of an extensive research made by the present inventors, they completed the present invention based on the finding that the above-described problems can be solved with a catalyst comprising a crystalline aluminosilicate and alumina-boria in combination.
- That is, the present invention relates to a catalyst for hydrocracking paraffinic hydrocarbons which comprises a crystalline aluminosilicate, alumina-boria and a noble metal of Group VIII of the Periodic Table.
- The present invention also relates to the above-described catalyst wherein the average particle diameter of the crystalline aluminosilicate is 0.5 μm or smaller.
- The present invention also relates a process for producing liquid hydrocarbons wherein paraffinic hydrocarbons are hydrocracked using the foregoing catalyst.
- The present invention will be described in more detail below.
- The term “aluminosilicate” used herein denotes a metal oxide constituted by three elements, i.e., aluminum, silicon, and oxygen. Although another metal element may coexist to an extent that the present invention is not prohibited from achieving the advantageous effects, the amount of such a metal element is 5 percent by mass or less and preferably 3 percent by mass or less of the total amount of alumina and silica in the form of an oxide. Examples of the metal element which may coexist are titanium, lanthanum, manganese, gallium and zinc. Preferred are titanium and lanthanum.
- The crystallinity of aluminosilicate can be estimated with the proportion of tetrahedrally coordinated Al atoms in all the Al atoms which proportion can be measured by a solid 27Al NMR spectrum. The term “crystalline aluminosilicate” used in the present invention denotes that whose proportion of tetrahedrally coordinated Al atoms is 50 percent or more. Any crystalline aluminosilicate can be used in the present invention as long as the proportion of tetrahedrally coordinated Al atoms is 50 percent or more. However, it is preferred to use those containing 70 percent or more of the tetrahedrally coordinated Al atoms, and it is more preferred to use those containing 80 percent or more of the tetrahedrally coordinated Al atoms.
- Crystalline aluminosilicates eligible for the present invention are so-called zeolites. Preferred are Y- or USY-type zeolites, beta-type zeolites, mordenite, and ZSM-5, and most preferred is USY-type zeolite. If necessary, two or more types of crystalline aluminosilicates may be used.
- No particular limitation is imposed on the average particle diameter of the crystalline aluminosilicate to be used in the present invention. However, the average particle diameter is preferably 1.0 μm or smaller and particularly preferably 0.5 μm or smaller.
- The hydrocracking catalyst of the present invention is characterized in that it comprises a crystalline aluminosilicate and alumina-boria. No particular limitation is imposed on the content ratio of alumina to boria in alumina-boria. However, in general the ratio of alumina to boria is preferably 30 to 99 percent by mass: 70 to 1 percent by mass, more preferably 50 to 95 percent by mass: 50 to 5 percent by mass, and most preferably 70 to 90 percent by mass: 30 to 10 percent by mass.
- No particular limitation is imposed on the mass ratio of the crystalline aluminosilicate to alumina-boria in the catalyst. However, in general the mass ratio is preferably from 0.001 to 2.000, more preferably 0.010 to 1.500 and most preferably 0.015 to 0.200.
- The catalyst may be molded into a desired shape without using a binder. However, a binder may be used if necessary. No particular limitation is imposed on the binder. However, preferred binders are alumina, silica, silica-alumina, titania and magnesia, and most preferred is alumina. No particular limitation is imposed on the percentage of binder in the whole molded catalyst. However, it is usually from 5 to 99 percent by mass and preferably from 20 to 99 percent by mass.
- The catalyst of the present invention necessarily contains a noble metal of Group VIII of the Periodic Table as an active component. When a metal other than that of Group VIII of the Periodic Table is used as an active agent, the middle distillate yield obtained by a hydrocracking process using a catalyst containing such a metal is extremely reduced thereby failing to achieve the purposes of the present invention.
- Specific examples of the noble metal of Group VIII of the Periodic Table include cobalt, nickel, rhodium, palladium, iridium, and platinum. Most preferred are palladium and platinum. The catalyst of the present invention can be produced by loading these metals into the above-described molded catalyst by a well-known method such as impregnation or ion-exchange.
- If necessary, two or more noble metals may be loaded in combination. For example, both platinum and palladium may be loaded. No particular limitation is imposed on the loaded amount of the noble metal. The amount is usually from 0.02 to 2 percent by mass based on the total mass of the catalyst.
- In the present invention, the term “paraffinic hydrocarbon” used herein denotes hydrocarbons the paraffin molecule content of which is 70 percent by mol or more. No particular limitation is imposed on the carbon atom number of the hydrocarbon molecules. However, those having from 10 to 100 carbon atoms are usually used. The catalyst of the present invention is particularly effective for hydrocracking paraffinic hydrocarbons having 20 or more carbon atoms, so-called “wax”.
- No particular limitation is imposed on the process for producing a paraffinic hydrocarbon which will be the feedstock of the hydrocracking process. Therefore, the catalyst of the present invention is applicable to various paraffinic hydrocarbons such as petroleum-based or synthetic paraffinic hydrocarbons. However, particularly preferred paraffinic hydrocarbons are so-called FT waxes produced by Fischer-Tropsch synthesis.
- The catalyst of the present invention may be used in a conventional fixed bed reactor apparatus. The reaction conditions are a reaction temperature of 200 to 500° C., a hydrogen pressure of 0.5 to 12 MPa, and an LHSV (liquid hourly space velocity) of a paraffinic hydrocarbon feedstock of 0.1 to 10/h. Preferred conditions are a reaction temperature of 250 to 400° C., a hydrogen pressure of 2.0 to 8.0 MPa, and an LHSV (liquid hourly space velocity) of a paraffinic hydrocarbon feedstock of 0.3 to 5.0/h.
- When the catalyst of the present invention comprising the above-described aluminosilicate, alumina-boria and a noble metal of Group VIII of the Periodic Table is used for hydrocracking paraffinic hydrocarbons, it can achieve high cracking activity and middle distillate yield and the low pour point of the resulting liquid hydrocarbon all together.
- The present invention will be described in more detail with reference to the following examples and comparative examples but are not limited thereto.
- A column-like support with a size of 1/16 inch (about 1.6 mm) comprising 30 g of a USY zeolite with an average particle diameter of about 0.4 μm and 970 g of alumina-boria was impregnated with an aqueous solution containing dichlorotetraammine platinum (II) in such an amount that the amount of the platinum element was 0.8 percent by mass of the support. The support was dried at a temperature of 120° C. for 3 hours and calcined at a temperature of 500° C. for one hour thereby preparing a catalyst.
- The catalyst thus prepared (200 ml) was filled into a fixed bed flow reactor and used to hydrocrack a paraffinic hydrocarbon. The feedstock used herein was an FT wax whose paraffin content was 95 percent and carbon number distribution was from 20 to 80. The hydrogen pressure was 3 MPa, while the LHSV of the feedstock was 2.0/h. The fraction whose boiling point was 360° C. or lower was defined as “cracked product”. The reaction temperature at which the cracked product in an amount of 80 percent by mass based on the feed stock was obtained was measured. Also measured were the yield of the middle distillate whose boiling point was from 145° C. to 360° C. and the pour point of the resulting gas oil whose boiling point was from 260° C. to 360° C. The results are set forth in Table 1 below.
- 30 g of a USY zeolite with an average particle diameter of about 0.4 μm, 570 g of alumina-boria powder, and 400 g of alumina used as a binder were molded thereby obtaining a column-like support with a size of 1/16 inch (about 1.6 mm). Platinum was loaded into the support such that the amount of the platinum was 0.8 percent by mass of the support in the same manner as Example 1. The support was dried at a temperature of 120° C. for 3 hours and calcined at a temperature of 500° C. for one hour thereby preparing a catalyst.
- Hydrocracking was conducted using this catalyst in the same manner as Example 1 so as to measure the reaction temperature at which the cracked product in an amount of 80 percent by mass based on the feed stock was obtained, the yield of the middle distillate whose boiling point was from 145° C. to 360° C. and the pour point of the resulting gas oil whose boiling point was from 260° C. to 360° C. The results are set forth in Table 1 below.
- Preparation of a catalyst and hydrocracking were conducted by the same procedures of Example 1 except that a USY-type zeolite with an average particle diameter of 0.8 μm was used so as to measure the reaction temperature at which the cracked product in an amount of 80 percent by mass based on the feed stock was obtained, the yield of the middle distillate whose boiling point was from 145° C. to 360° C. and the pour point of the resulting gas oil whose boiling point was from 260° C. to 360° C. The results are set forth in Table 1 below.
- Preparation of a catalyst and hydrocracking were conducted by the same procedures of Example 1 except that alumina was used instead of alumina-boria so as to measure the reaction temperature at which the cracked product in an amount of 80 percent by mass based on the feed stock was obtained, the yield of the middle distillate whose boiling point was from 145° C. to 360° C. and the pour point of the resulting gas oil whose boiling point was from 260° C. to 360° C. The results are set forth in Table 1 below.
- Preparation of a catalyst and hydrocracking were conducted by the same procedures of Example 1 except that a USY-type zeolite was not used so as to measure the reaction temperature at which the cracked product in an amount of 80 percent by mass based on the feed stock was obtained, the yield of the middle distillate whose boiling point was from 145° C. to 360° C. and the pour point of the resulting gas oil whose boiling point was from 260° C. to 360° C. The results are set forth in Table 1 below.
- Preparation of a catalyst and hydrocracking were conducted by the same procedures of Example 1 except that the support loaded with nickel in an amount of 5 percent by mass based on the support and tungsten in an amount of 15 percent by mass based on the support instead of platinum so as to measure the reaction temperature at which the cracked product in an amount of 80 percent by mass based on the feed stock was obtained, the yield of the middle distillate whose boiling point was from 145° C. to 360° C. and the pour point of the resulting gas oil whose boiling point was from 260° C. to 360° C. The results are set forth in Table 1 below.
- As apparent from the results set forth in Table 1, the combination of a crystalline aluminosilicate and alumina-boria can satisfy high cracking activity, high middle distillate yield and the low pour point of the resulting gas oil all together. Furthermore, it was also apparent that noble metals of the Group VIII of the Periodic Table are effective as active metals.
TABLE 1 Middle Cracking Distillate Pour Point of Temperature Yield Resulting Gas Oil ° C. mass % ° C. Example 1 298 52.9 −37.5 Example 2 305 53.0 −37.5 Example 3 301 50.9 −37.5 Comparative Example 1 330 47.5 −30.0 Comparative Example 2 355 47.4 −37.5 Comparative Example 3 361 25.5 −35.0 - It will be appreciated by those skilled in the art that changes could be made to the embodiments described above without departing from the broad inventive concept thereof. It is understood, therefore, that this invention is not limited to the particular embodiments disclosed, but it is intended to cover modifications within the spirit and scope of the present invention as defined by the appended claims.
Claims (4)
1. A catalyst for hydrocracking a paraffinic hydrocarbon comprising a crystalline aluminosilicate, alumina-boria and a noble metal of Group VIII of the Periodic Table.
2. The catalyst for hydrocracking a paraffinic hydrocarbon according to claim 1 wherein the average particle diameter of the crystalline aluminosilicate is 0.5 μm or smaller.
3. A process for producing a liquid hydrocarbon wherein a paraffinic hydrocarbon is hydrocracked using the catalyst according to claim 1 .
4. A process for producing a liquid hydrocarbon wherein a paraffinic hydrocarbon is hydrocracked using the catalyst according to claim 2.
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JP2004094817A JP4313237B2 (en) | 2004-03-29 | 2004-03-29 | Hydrocracking catalyst and method for producing liquid hydrocarbon |
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PCT/JP2005/004728 WO2005092500A1 (en) | 2004-03-29 | 2005-03-10 | Hydrocracking catalyst and process for producing liquid hydrocarbon |
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EP (1) | EP1733789A4 (en) |
JP (1) | JP4313237B2 (en) |
CN (2) | CN103212431A (en) |
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Also Published As
Publication number | Publication date |
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AU2005225266B2 (en) | 2010-07-15 |
US7700818B2 (en) | 2010-04-20 |
US20080306321A1 (en) | 2008-12-11 |
EP1733789A1 (en) | 2006-12-20 |
MY165564A (en) | 2018-04-05 |
CN1938090A (en) | 2007-03-28 |
WO2005092500A1 (en) | 2005-10-06 |
CN103212431A (en) | 2013-07-24 |
AU2005225266A1 (en) | 2005-10-06 |
JP4313237B2 (en) | 2009-08-12 |
EP1733789A4 (en) | 2010-12-08 |
JP2005279382A (en) | 2005-10-13 |
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