US20120209046A1 - Selective isomerization and oligomerization of olefin feedstocks for the production of turbine and diesel fuels - Google Patents
Selective isomerization and oligomerization of olefin feedstocks for the production of turbine and diesel fuels Download PDFInfo
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- US20120209046A1 US20120209046A1 US13/095,201 US201113095201A US2012209046A1 US 20120209046 A1 US20120209046 A1 US 20120209046A1 US 201113095201 A US201113095201 A US 201113095201A US 2012209046 A1 US2012209046 A1 US 2012209046A1
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- 238000006317 isomerization reaction Methods 0.000 title claims description 21
- 238000006384 oligomerization reaction Methods 0.000 title claims description 18
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 title claims description 14
- 239000002283 diesel fuel Substances 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000000034 method Methods 0.000 claims abstract description 29
- 230000008569 process Effects 0.000 claims abstract description 25
- 239000000446 fuel Substances 0.000 claims abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003054 catalyst Substances 0.000 claims description 37
- 239000000203 mixture Substances 0.000 claims description 17
- CPOFMOWDMVWCLF-UHFFFAOYSA-N methyl(oxo)alumane Chemical compound C[Al]=O CPOFMOWDMVWCLF-UHFFFAOYSA-N 0.000 claims description 10
- 150000001298 alcohols Chemical class 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 8
- GGQQNYXPYWCUHG-RMTFUQJTSA-N (3e,6e)-deca-3,6-diene Chemical compound CCC\C=C\C\C=C\CC GGQQNYXPYWCUHG-RMTFUQJTSA-N 0.000 claims description 6
- 239000002841 Lewis acid Substances 0.000 claims description 5
- 239000011954 Ziegler–Natta catalyst Substances 0.000 claims description 5
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- 238000004821 distillation Methods 0.000 claims description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 2
- 230000018044 dehydration Effects 0.000 claims description 2
- 238000006297 dehydration reaction Methods 0.000 claims description 2
- 239000002638 heterogeneous catalyst Substances 0.000 claims description 2
- 239000003446 ligand Substances 0.000 claims description 2
- IAQRGUVFOMOMEM-ONEGZZNKSA-N trans-but-2-ene Chemical compound C\C=C\C IAQRGUVFOMOMEM-ONEGZZNKSA-N 0.000 claims description 2
- 229910052723 transition metal Inorganic materials 0.000 claims description 2
- 229910000314 transition metal oxide Inorganic materials 0.000 claims description 2
- 150000003624 transition metals Chemical class 0.000 claims description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 claims 3
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- IAQRGUVFOMOMEM-UHFFFAOYSA-N but-2-ene Chemical compound CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 claims 3
- 238000011925 1,2-addition Methods 0.000 claims 2
- 229910052751 metal Inorganic materials 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 2
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- 229910052763 palladium Inorganic materials 0.000 claims 2
- 229910052697 platinum Inorganic materials 0.000 claims 2
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- IAQRGUVFOMOMEM-ARJAWSKDSA-N cis-but-2-ene Chemical compound C\C=C/C IAQRGUVFOMOMEM-ARJAWSKDSA-N 0.000 claims 1
- XNMQEEKYCVKGBD-UHFFFAOYSA-N dimethylacetylene Natural products CC#CC XNMQEEKYCVKGBD-UHFFFAOYSA-N 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 1
- 229910052748 manganese Inorganic materials 0.000 claims 1
- 239000011572 manganese Substances 0.000 claims 1
- 150000002739 metals Chemical class 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 239000011949 solid catalyst Substances 0.000 claims 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims 1
- 229910052720 vanadium Inorganic materials 0.000 claims 1
- 229910052725 zinc Inorganic materials 0.000 claims 1
- 239000011701 zinc Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 10
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 3
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
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- 230000004048 modification Effects 0.000 description 2
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- 239000002028 Biomass Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- WAEMQWOKJMHJLA-UHFFFAOYSA-N Manganese(2+) Chemical compound [Mn+2] WAEMQWOKJMHJLA-UHFFFAOYSA-N 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 229910007928 ZrCl2 Inorganic materials 0.000 description 1
- FWSFOGWXODZIBD-UHFFFAOYSA-I [Cl-].[Cl-].[Cl-].[Ti+3].Cl[Ni]Cl.CC[Al](CC)CC Chemical compound [Cl-].[Cl-].[Cl-].[Ti+3].Cl[Ni]Cl.CC[Al](CC)CC FWSFOGWXODZIBD-UHFFFAOYSA-I 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 but not limited to Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003729 cation exchange resin Substances 0.000 description 1
- 229940023913 cation exchange resins Drugs 0.000 description 1
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical compound [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 description 1
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- WXHIJDCHNDBCNY-UHFFFAOYSA-N palladium dihydride Chemical compound [PdH2] WXHIJDCHNDBCNY-UHFFFAOYSA-N 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 229920000137 polyphosphoric acid Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical class CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
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- 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
- C10G3/00—Production of liquid hydrocarbon mixtures from oxygen-containing organic materials, e.g. fatty oils, fatty acids
- C10G3/42—Catalytic treatment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
- C10G45/58—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds to change the structural skeleton of some of the hydrocarbon content without cracking the other hydrocarbons present, e.g. lowering pour point; Selective hydrocracking of normal paraffins
- C10G45/68—Aromatisation of hydrocarbon oil fractions
- C10G45/70—Aromatisation of hydrocarbon oil fractions with catalysts containing platinum group metals or compounds thereof
-
- 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
- C10G50/00—Production of liquid hydrocarbon mixtures from lower carbon number hydrocarbons, e.g. by oligomerisation
-
- 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
- C10G69/00—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process
- C10G69/02—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only
- C10G69/12—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only including at least one polymerisation or alkylation step
- C10G69/126—Treatment of hydrocarbon oils by at least one hydrotreatment process and at least one other conversion process plural serial stages only including at least one polymerisation or alkylation step polymerisation, e.g. oligomerisation
-
- 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
- C10G2400/04—Diesel oil
-
- 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
- C10G2400/08—Jet fuel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P30/00—Technologies relating to oil refining and petrochemical industry
- Y02P30/20—Technologies relating to oil refining and petrochemical industry using bio-feedstock
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
- This is a continuation-in-part patent application, claiming the benefit of, parent applications Ser. No. 12/511,796 filed on Jul. 29, 2009 and Ser. No. 12/550,973 filed on Aug. 31, 2009 which are co-pending and this is a continuation-in-part patent application, claiming the benefit of patent application Ser. No. 12/769,757 filed on Apr. 29, 2010, which is a continuation-in-part, whereby the entire disclosure of which is incorporated hereby reference.
- The invention described herein may be manufactured and used by or for the government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.
- The invention generally relates to processes for converting alcohol feedstocks to diesel/turbine fuels, and more specifically, using catalytic methods to efficiently convert biofeedstocks into diesel/turbine fuels.
-
FIG. 1 is a generic diagram for the conversion of mixed olefin feedstocks to turbine and diesel fuels, according to embodiments of the invention. - It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not to be viewed as being restrictive of the invention, as claimed. Further advantages of this invention will be apparent after a review of the following detailed description of the disclosed embodiments, which are illustrated schematically in the accompanying drawings and in the appended claims.
- Embodiments of the invention generally relate to processes for converting alcohol feedstocks to diesel/turbine fuels.
- Several technologies exist for the oligomerization of short chain olefins. Oligomerizations catalyzed by Ziegler Nana catalysts have been shown to result in desired distributions of isomers. One drawback of this approach is that these catalysts are only effective with primary olefins. The use of a bimetallic catalyst system to isomerize internal olefins with concomitant conversion of primary olefins to oligomers allows for efficient conversion of mixed olefin feedstocks to fuels suitable for both jet and diesel propulsion.
- The fermentation of sugars derived from biomass to alcohols is a proven and effective method for the conversion of sustainable feedstocks to fuels. Although fuels such as ethanol, n-butanol and more recently, n-pentanol have utility as gasoline replacements, certain applications (e.g. jet aircraft propulsion, military vehicles) require fully saturated hydrocarbon fuels. Alcohols can be dehydrated to olefins with modest energy inputs and the olefins can subsequently be oligomerized to produce saturated fuels. The use of specific Ziegler Natta catalysts under controlled conditions has been shown to be an effective route for conversion of primary olefins to jet fuels. In part, the suitability of such fuels is due to their well controlled branching coupled with chain length selectivity. Dehydration of longer chain alcohols (e.g. C4-C20) typically produces a mixture of both internal, external and branched chain olefins. To address this issue, embodiments of the invention combine an isomerization catalyst with the Ziegler-Natta oligomerization catalyst. The isomerization catalyst produces an equilibrium mixture of olefins including a significant amount of primary olefins. The Ziegler Natta catalyst can then convert the primary olefin to oligomer which then allows for the further conversion of remaining internal olefins. In summary, the synergistic effect of the bimetallic system allows for internal olefins to be effectively converted to specific distributions of oligomers.
- Solid acid catalysts including, but not limited to, zeolites, cation exchange resins, polyphosphoric acid and aluminosilicate clays can effectively oligomerize mixed olefin feedstocks. These methods are in general far less selective than the current approach. An isomerization-polymerization catalyst based on a titanium trichloride-nickel chloride-triethylaluminum catalyst has been described in the literature. Catalyst systems in embodiments of the invention do not produce high molecular weight polymer, but instead are selective for well defined oligomer distributions.
- Selective isomerization/oligomerization of olefin precursors allows for the custom synthesis of saturated, hydrocarbon fuels from renewable feedstocks. This in turn reduces the carbon footprint of the fuel production process without sacrificing vehicle performance.
- Pure or mixed alcohol feedstocks (e.g. ethanol, propanols, butanols, pentanols . . . ) are derived from renewable sources, and are subsequently dehydrated with a solid acid catalyst at elevated temperature, in the range between about 200° C. and about 400° C. Potential catalysts include, but are not limited to; gamma alumina, transition metal oxides, aluminum phosphate, and other heterogeneous catalysts of modest acidity. In an embodiment, catalysts that produce mainly (>80%) primary olefins are utilized. In the case of alcohol feedstocks that only include internal alcohols, the choice of catalyst is dictated by overall conversion efficiencies and not by selectivity to primary olefins.
- In embodiments, the mixed olefin feedstock can be converted to oligomers by two routes. When the feedstock is sufficiently rich in primary olefins (20-80%), or >80%, the olefins can be directly oligomerized by a metallocene based Ziegler Nana catalyst with methylaluminoxane (MAO) cocatalyst Al:Zr=100:1 as described in U.S. patent application Ser. No. 12/511,796 which is hereby in its entirety incorporated by reference. This transformation results in the quantitative conversion of the normal olefins to an oligomer mixture, while internal olefins are untouched. The unreacted olefins can be separated by a low temperature distillation and then converted to a specific distribution of oligomers through the use of a bimetallic isomerization/oligomerization catalyst comprised of a metallocene based catalyst in conjunction with an isomerization catalyst.
- In alternative embodiments, the isomerization catalyst can be added directly to the reaction mixture without separation. The isomerization catalyst can be selected from a list of modest Lewis acids that promote isomerization without affecting the oligomerization process. Examples include, but are not limited to transition metal catalysts based on; Ni(II), Zn(II), Pd(II), Pt(II), Cr(II), Cr(III), Fe(II), Fe(III), Mn(II), V(II), V(III), and Co(II). These catalysts can be added with or without ligands, typically with a Lewis Acid:Metallocene ratio in the range of from about 0.1 to about 10, or alternatively from about 0.5 to about 2. The isomerization catalyst and oligomerization catalyst are slurried or dissolved in a non-coordinating solvent and are then activated with MAO. In embodiments, the isomerization/oligomerization reaction can be carried out at similar temperatures and pressures as the direct oligomerization process.
- In another alternate embodiment, the approach that is particularly useful for olefin feedstocks with modest amounts of primary olefins (<˜20%) is to forego the direct oligomerization and subject the original olefin mixture to the isomerization/oligomerization catalyst. Oligomerization mixtures are upgraded through hydrogenation and distillation as described in U.S. patent application Ser. No. 12/511,796 which is hereby in its entirety incorporated by reference to produce fuels suitable for use in turbine or diesel engines.
- Example: Cp2ZrCl2 and NiCl2 are added to a reactor and activated by addition of 100 molar equivalents of MAO in toluene. The solution is allowed to react for one hour and the solvent along with residual AlMe3 is removed under reduced pressure. Dry trans-2-butene is condensed onto the catalyst, the reactor is then sealed, and the solution is stirred for several hours at room temperature. The reaction is quenched with water, filtered, and the resultant distribution of oligomers is upgraded through hydrogenation and distillation.
-
FIG. 1 illustrates a method for the conversion of alcohol feedstocks to fully saturated turbine and diesel fuels. In the initial step, pure alcohols or mixtures are dehydrated to produce an olefin feedstock. This mixed feedstock can then be either directly oligomerized with an appropriate Ziegler Natta catalyst, or, depending on the distribution of olefins, can be isomerized and oligomerized with a bimetallic isomerization/oligomerization catalyst to produce a specific distribution of oligomers. In the case of direct oligomerization, residual olefins are separated by distillation and then subjected to isomerization/oligomerization conditions to further improve the yield of the process. Oligomer mixtures are then hydrogenated and distilled to produce fuels suitable for use in both turbine and diesel engines. - Where a range of values is provided, it is understood that each intervening value, to the tenth of the unit of the lower limit unless the context clearly dictates otherwise, between the upper and lower limits of that range is also specifically disclosed. Each smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in that stated range is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range, and each range where either, neither or both limits are included in the smaller ranges is also encompassed within the invention, subject to any specifically excluded limit in the stated range. Where the stated range includes one or both of the limits, ranges excluding either or both of those included limits are also included in the invention.
- While the invention has been described, disclosed, illustrated and shown in various terms of certain embodiments or modifications which it has presumed in practice, the scope of the invention is not intended to be, nor should it be deemed to be, limited thereby and such other modifications or embodiments as may be suggested by the teachings herein are particularly reserved especially as they fall within the breadth and scope of the claims here appended.
Claims (19)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/095,201 US8242319B1 (en) | 2009-07-29 | 2011-04-27 | Selective isomerization and oligomerization of olefin feedstocks for the production of turbine and diesel fuels |
US13/095,245 US8350107B2 (en) | 2009-07-29 | 2011-04-27 | Selective isomerization and oligomerization of olefin feedstocks for the production of turbine and diesel fuels |
US13/095,290 US8344196B2 (en) | 2009-07-29 | 2011-04-27 | Selective isomerization and oligomerization of olefin feedstocks for the production of turbine and diesel fuels |
PCT/US2012/035121 WO2012149108A1 (en) | 2011-04-27 | 2012-04-26 | Selective isomerization and oligomerization of olefin feedstocks for the production of turbine and diesel fuels |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/511,796 US8395007B2 (en) | 2009-07-29 | 2009-07-29 | Diesel and jet fuels based on the oligomerization of butene |
US12/550,973 US8227651B1 (en) | 2009-08-31 | 2009-08-31 | High density renewable fuels based on the selective dimerization of pinenes |
US12/769,757 US8785702B2 (en) | 2009-07-29 | 2010-04-29 | Turbine and diesel fuels and methods for making the same |
US13/095,201 US8242319B1 (en) | 2009-07-29 | 2011-04-27 | Selective isomerization and oligomerization of olefin feedstocks for the production of turbine and diesel fuels |
Related Parent Applications (3)
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WO2014073006A1 (en) | 2012-11-09 | 2014-05-15 | Council Of Scientific & Industrial Research | A single step catalytic process for the conversion of n-paraffins and naphtha to diesel range hydrocarbons |
US9242226B2 (en) | 2009-07-29 | 2016-01-26 | The Government Of The United States Of America As Represented By The Secretary Of The Navy | Process for the dehydration of aqueous bio-derived terminal alcohols to terminal alkenes |
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US8912373B2 (en) | 2009-07-29 | 2014-12-16 | The United States Of America As Represented By The Secretary Of The Navy | Process for the dehydration of aqueous bio-derived terminal alcohols to terminal alkenes |
US8969636B2 (en) | 2009-07-29 | 2015-03-03 | The United States Of America As Represented By The Secretary Of The Navy | Homogeneous metallocene ziegler-natta catalysts for the oligomerization of olefins in aliphatic-hydrocarbon solvents |
US9649626B2 (en) | 2009-07-29 | 2017-05-16 | The United States Of America As Represented By The Secretary Of The Navy | Process for the dehydration of aqueous bio-derived terminal alcohols to terminal alkenes |
US8785702B2 (en) | 2009-07-29 | 2014-07-22 | The United States Of America As Represented By The Secretary Of The Navy | Turbine and diesel fuels and methods for making the same |
US9522854B2 (en) | 2009-07-29 | 2016-12-20 | The United States Of America As Represented By The Secretary Of The Navy | Process and apparatus for the selective dimerization of terpenes and poly-alpha-olefins with a single-stage reactor and a single-stage fractionation system |
CN104926963A (en) * | 2015-06-26 | 2015-09-23 | 哈尔滨工业大学 | Method for synthesizing poly alpha-olefin base oil through 1-butene oligomerization |
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JPS5430101A (en) * | 1977-08-11 | 1979-03-06 | Sumitomo Chem Co Ltd | Isomerization of olefins |
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US9242226B2 (en) | 2009-07-29 | 2016-01-26 | The Government Of The United States Of America As Represented By The Secretary Of The Navy | Process for the dehydration of aqueous bio-derived terminal alcohols to terminal alkenes |
WO2014073006A1 (en) | 2012-11-09 | 2014-05-15 | Council Of Scientific & Industrial Research | A single step catalytic process for the conversion of n-paraffins and naphtha to diesel range hydrocarbons |
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US8350107B2 (en) | 2013-01-08 |
US8242319B1 (en) | 2012-08-14 |
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