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Hydroisomerization and selective hydrogenation of feedstock in ionic liquid-catalyzed alkylation

一种酸性离子液体、烷基化物的技术，应用在烷基化领域，能够解决烷基化效率降低、不适宜聚合物副产物等问题

Inactive Publication Date: 2012-08-15
CHEVROU USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the presence of diolefins in the feedstock of this ionic liquid-catalyzed alkylation reaction would reduce the efficiency of the alkylation and generate large amounts of undesired polymer by-products

Method used

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  • Hydroisomerization and selective hydrogenation of feedstock in ionic liquid-catalyzed alkylation
  • Hydroisomerization and selective hydrogenation of feedstock in ionic liquid-catalyzed alkylation
  • Hydroisomerization and selective hydrogenation of feedstock in ionic liquid-catalyzed alkylation

Examples

Experimental program
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Effect test

Embodiment 1

[0049] C 4 Hydroisomerization of Olefin Feedstocks

[0050] Table 1 shows the refinery C 4 Olefin feedstock is using 0.5wt%Pd / Al 2 o 3 Composition before and after catalyst hydroisomerization. It demonstrates the conversion of 1-butene to 2-butene and complete saturation of 1,3-butene by the hydroisomerization process. The 1-butene in the hydroisomerization product is at C4 Concentrations in olefins are below 5%, with little or no loss of olefins.

[0051] Table 1.C 4 Composition of olefin streams before and after hydroisomerization

[0052]

Embodiment 2

[0054] C 3 and C 4 Hydroisomerization of Olefin Feedstocks

[0055] Table 2 shows the propylene-rich refinery C 4 The olefin feed stream is using 0.5wt% Pd / Al 2 o 3 Composition of the catalyst before and after hydroisomerization. It demonstrates the conversion of 1-butene to 2-butene and complete saturation of 1,3-butene by this hydroisomerization. C 4 1-Butene among the olefins is isomerized from 19.9% ​​in the feed to about 6% in the product.

[0056] Table 2.C 4 Composition of olefin streams before and after hydroisomerization

[0057]

[0058]

Embodiment 3

[0060] Refinery C. 5 Hydroisomerization of Olefin Feedstocks

[0061] Table 3 shows that at 0.5wt% Pd / Al 2 o 3 C before and after hydroisomerization on the catalyst 5 Olefin composition. 1-Pentene is isomerized to 2-Pentene with over 80% conversion over this catalyst. 3-Methyl-1-butene and 2-methyl-1-butene were converted to 2-methyl-2-butene at about 50% conversion.

[0062] Table 3.C 5 Composition of olefin streams before and after hydroisomerization

[0063] Hydroisomerization Conditions

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Abstract

A process for producing alkylate comprising contacting a first hydrocarbon stream comprising at least one olefin having from 2 to 6 carbon atoms which contains 1,3-butadiene and 1-butene with a hydroisomerization catalyst in the presence of hydrogen under conditions favoring the simultaneous selective hydrogenation of 1,3-butadiene to butenes and the isomerization of 1-butene to 2-butene and contacting the resulting stream and a second hydrocarbon stream comprising at least one isoparaffin having from 3 to 6 carbon atoms with an acidic ionic liquid catalyst under alkylation conditions to produce an alkylate is disclosed.

Description

field of invention [0001] The present invention relates to a process for the alkylation of light isoparaffins with olefins using catalysts comprising ionic liquids. Background of the invention [0002] In general, the conversion of light paraffins and light olefins into more valuable fractions is highly beneficial to the refining industry. This has been accomplished by alkylating paraffins with olefins or polymerizing olefins. One of the most widely used methods in this field is the use of sulfuric and hydrofluoric acids with C 3 -C 5 Olefins Alkylate isobutane to produce gasoline fractions with high octane ratings. This process has been used by the oil refining industry since the 1940s. The process is driven by the increasing demand for high-quality and clean-burning high-octane gasoline. [0003] Alkylate gasoline is an efficiently burning gasoline that makes up about 14% of the total gasoline volume. Alkylate gasoline is usually produced by alkylating isobutane with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C2/58C07C9/00B01J31/02
CPCC07C2/60C07C5/255C07C5/2562C07C7/163C07C2521/04C07C2523/44C07C2527/125C07C2531/02C10G29/205C10G2300/1081C10G2300/1088C10G2400/02C07C9/16C07C11/08C07C2/58C07C9/00B01J31/02
Inventor B-Z·詹H·S·拉驰恩H-K·C·蒂姆肯
Owner CHEVROU USA INC
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