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Process for preparing alkylated oil

A technology of alkylate oil and high octane number, which is used in the preparation of alkylate oil, uses ionic liquid as a catalyst to prepare alkylate oil, can solve problems such as low efficiency, and achieve high reaction activity and recycling operation. Simple and energy-saving effect

Inactive Publication Date: 2008-07-02
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The US2005 / 0059848 patent describes the application of a polyacrylic acid-supported trifluoromethanesulfonic acid catalyst in the alkylation reaction of isobutane and isobutylene. The efficiency is lower than that of the sulfuric acid method and other ionic liquid catalysts. It does not involve C 4 Reactions and effects of other alkenes in

Method used

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  • Process for preparing alkylated oil
  • Process for preparing alkylated oil
  • Process for preparing alkylated oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The toluenesulfonic acid ionic liquid catalyst of 6.0 grams of pyridine butylsulfonic acid is added in the autoclave with stirring, with N 2 Pressing pressure to 0.5MPa, feed 80g of isobutane and butene-1 mixed raw material, the alkene ratio in the raw material is 6:1. Start stirring, raise the temperature to 70°C within 30min, and use N 2 Ensure the pressure is 1.6MPa, and react for 0.5h. After the reaction, cool down and release the pressure. The reaction solution is poured into a separatory funnel and left to stand for stratification, the lower layer is the catalyst phase, and the upper layer is the alkylated oil phase.

Embodiment 2

[0044] Add 2.0% trifluoromethanesulfonic acid ionic liquid catalyst of 2-butylpyridine propylsulfonate into the autoclave with stirring, and use N 2 Pressing pressure to 0.5MPa, feed 80g of isobutane and butene-1 mixed raw material, the alkene ratio in the raw material is 6:1. Start stirring, raise the temperature to 70°C within 30min, and use N 2 Ensure the pressure is 1.6MPa, and react for 0.5h. After the reaction, cool down and release the pressure. The reaction solution is poured into a separatory funnel and left to stand for stratification, the lower layer is the catalyst phase, and the upper layer is the alkylated oil phase.

Embodiment 3

[0046] The toluenesulfonic acid ionic liquid catalyst of 6.0 grams of 1-butyl imidazole sulfonic acid butyl ester is added in the autoclave with stirring, with N 2 Pressing pressure to 0.5MPa, feed 80g of mixed raw material of isobutane and butene-1, the ratio of alkene in the raw material is 10:1. Start stirring, raise the temperature to 70°C within 30min, and use N 2 Ensure the pressure is 1.6MPa, and react for 0.5h. After the reaction, cool down and release the pressure. The reaction solution is poured into a separatory funnel and left to stand for stratification, the lower layer is the catalyst phase, and the upper layer is the alkylated oil phase.

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Abstract

The invention discloses an alkylate preparation method in petrochemical field, in particular to a method for preparing alkylate by using an ionic liquid as a catalyst. The method can prepare the alkylate with high octane number by selecting the ionic liquid as the catalyst and the mixture of isobutane and C4 olefin as the reactants and by intermittent or continuous operation of a tank reactor or a fiber membrane reactor at 30 to 85 DEG C, in the presence or absence of reaction auxiliary agent and under a pressure that can ensure the reactants are liquid. The catalytic activity and C8 selectivity of the invention reach or exceed the level of industrial production of alkylate, and the ionic liquid catalyst has almost no corrosion and can form a two-phase system with the alkylate, so that the alkylate product can be easily separated from the catalyst. The ionic liquid catalyst can be used for substituting for liquid strong acid, and the method is a green and clean alkylation process at scale and is suitable for large-scale industrial continuous production.

Description

technical field [0001] The invention relates to a method for preparing alkylated oil in the field of petrochemical industry, in particular to a method for preparing alkylated oil by using ionic liquid as a catalyst. Background technique [0002] In various industrial applications of alkylation reactions, isobutane is used as an alkylating agent to carry out alkylation reactions on low-carbon olefins (mainly butene and propylene) to generate high-octane alkylation The alkylation of isobutane for gasoline purposes is one of the most important industrial applications of alkylation. Alkylation of isoparaffins and low-carbon olefins produces a high-octane gasoline, which has the advantages of low sensitivity, low vapor pressure, high combustion calorific value, complete and clean combustion, and no pollution to the environment. Ideal blending component for gasoline. With the rapid development of the automobile industry and people's increasing emphasis on environmental protectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G29/20B01J31/02C07C2/56C07C2/06
Inventor 陈静夏春谷张新志郭恩修
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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