Method for preparation of tert-amyl alcohol by isoamylene hydration

A technology of isopentene water and tert-amyl alcohol, applied in hydroxyl addition preparation, organic chemistry and other directions, can solve problems such as large energy consumption and high production cost, achieve low energy consumption, save energy consumption, and save production and operation costs Effect

Inactive Publication Date: 2018-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of a large amount of solvents will cause greater energy consumption during the post-treatment of the product, resulting in higher production costs

Method used

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  • Method for preparation of tert-amyl alcohol by isoamylene hydration
  • Method for preparation of tert-amyl alcohol by isoamylene hydration
  • Method for preparation of tert-amyl alcohol by isoamylene hydration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] After mixing the isoamylene component rich in 2-methyl-1-butene and 2-methyl-2-butene with water and acetone, it enters the fixed-bed reaction equipped with strong acidic cation exchange resin catalyst The hydration reaction is carried out in a container to obtain tert-amyl alcohol. Wherein: the mass ratio of water, acetone and isoamylene rich in 2-methyl-1-butene and 2-methyl-2-butene in the hydration reaction raw material to acetone is 1:39.0:4.0. During the hydration reaction, the liquid hourly volume space velocity is 1.0h -1 , the reaction temperature is 50°C, and the reaction pressure is 1MPa.

Embodiment 2

[0021] After mixing the isoamylene component rich in 2-methyl-1-butene and 2-methyl-2-butene with water and acetone, it enters the fixed-bed reaction equipped with strong acidic cation exchange resin catalyst The hydration reaction is carried out in a container to obtain tert-amyl alcohol. Wherein: the mass ratio of water, acetone and isoamylene rich in 2-methyl-1-butene and 2-methyl-2-butene in the hydration reaction raw material to acetone is 1:2.0:6.0. During the hydration reaction, the liquid hourly volume space velocity is 2.0h -1 , the reaction temperature is 60°C, and the reaction pressure is 0.5MPa.

Embodiment 3

[0023] After mixing the isoamylene component rich in 2-methyl-1-butene and 2-methyl-2-butene with water and acetone, it enters the fixed-bed reaction equipped with strong acidic cation exchange resin catalyst The hydration reaction is carried out in a container to obtain tert-amyl alcohol. Wherein: the mass ratio of water, acetone and isoamylene rich in 2-methyl-1-butene and 2-methyl-2-butene in the hydration reaction raw material to acetone is 1:13.0:13.0. During the hydration reaction, the liquid hourly volume space velocity is 0.1h -1 , the reaction temperature is 70°C, and the reaction pressure is 1.5MPa.

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Abstract

The invention discloses a method for preparation of tert-amyl alcohol by isoamylene hydration. The method specifically includes the steps of: mixing an isoamylene component rich in 2-methyl-1-butene and 2-methyl-2-butene, water and acetone, then loading the mixture into a fixed bed reactor holding a strong acidic cation exchange resin catalyst, and carrying out hydration reaction to obtain tert-amyl alcohol. The method provided by the invention uses acetone as the solvent, which is free of azeotropy with water and is easy to recover; the solvent ratio is low, the energy consumption of reactionproduct post-treatment is saved, and the production operation cost is also saved.

Description

technical field [0001] The invention belongs to the technical field of organic chemical industry, and specifically relates to a method for preparing tert-amyl alcohol by hydrating isopentene. Background technique [0002] Tert-Amyl Alcohol is a basic organic chemical raw material used in the production of pinacolone, tert-amylbenzene and tert-amylanthraquinone (2-amylanthraquinone) for the synthesis of musk musk and color coupler for color film . In addition, tert-amyl alcohol can also be used as solvent, plasticizer and non-ferrous metal flotation agent. [0003] For the production of tert-amyl alcohol, the traditional process is to adopt the acetone-acetylene method. The raw material cost of this process is high, the process flow is complicated, and industrial waste residue will be produced when calcium carbide is hydrolyzed to produce acetylene, which will pollute the environment. With the increase of C5 separation technology and product supply, the production of tert-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/04C07C31/125
CPCC07C29/04C07C31/125
Inventor 陈洪军胡国君祁正娟李莹徐晓红陆徐国郑重
Owner CHINA PETROLEUM & CHEM CORP
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