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Ionic liquid catalyst alkylation using a loop reactor

An ionic liquid, alkylation technology, applied in chemical/physical/physical-chemical processes, refining with metal salts, chemical instruments and methods, etc., can solve the problems of aerosol environmental hazards and low safety of HF alkylation methods

Inactive Publication Date: 2010-12-08
CHEVROU USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The formation of aerosols is potentially a great environmental hazard and makes the HF alkylation process less safe than H 2 SO 4 Alkylation method

Method used

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  • Ionic liquid catalyst alkylation using a loop reactor
  • Ionic liquid catalyst alkylation using a loop reactor
  • Ionic liquid catalyst alkylation using a loop reactor

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Embodiment Construction

[0032] The present invention provides a method for producing low volatility, high quality gasoline blending components. According to the broadest aspect of the invention, the process comprises recycling a portion of at least one stream consisting essentially of isoparaffins recovered from an alkylation reaction back to said alkylation reaction.

[0033] The term alkylation as used herein refers to a reaction which takes place between an olefin and an isoparaffin. The term "isoparaffin" refers to any branched chain saturated hydrocarbon compound, i.e., of formula C n h 2n+2 branched chain alkanes. Examples of isoparaffins are isobutane and isopentane. The term "alkene" refers to an unsaturated hydrocarbon compound having at least one carbon-carbon double bond, i.e., the formula C n h 2n of ene. Examples of olefins include ethylene, propylene, butene, and the like. The olefin may include at least one olefin selected from the group consisting of ethylene, propylene, butene...

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Abstract

Provided is a process for producing low volatility, high quality gasoline blending components which comprises recirculation of at least a portion of a recovered stream comprising primarily isoparaffins. Recirculation of the stream allows for an enhanced I / O ratio and a more cost effective process.

Description

technical field [0001] The present invention relates to a process for producing a low volatility, high quality gasoline blending component which recycles at least a portion of a recovery stream comprising isoparaffins back to the process. More specifically, the present invention relates to an alkylation process using an ionic liquid catalyst that produces a product comprising gasoline blending components and recycles at least a portion of the recovery stream comprising isoparaffins back to The alkylation method. Background technique [0002] Modern refineries employ many upgrading units such as fluid catalytic cracking (FCC), hydrocracking (HCR), alkylation and paraffin isomerization units. As a result, these refineries produce large amounts of isopentane. Historically, isopentane was an ideal blending component for high octane (92 RON) gasoline, although it exhibited high volatility (20.4 Raye's vapor pressure (RVP)). As environmental laws began to set stricter limits on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G29/12C07C2/56
CPCB01J2219/0011B01J19/2465C10G2300/1092C10G50/00B01J2219/00047C10G29/205C10G2300/1081C10G2400/02C10G2300/1088B01J4/002
Inventor 罗虎平A·克梅恩K·帕里米M·阿米德B-K·张H-K·C·蒂姆肯
Owner CHEVROU USA INC