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Method for producing sec-butyl alcohol

A technology of sec-butanol and sec-butyl acetate, applied in hydrolysis preparation, organic chemistry, etc., can solve the problems of high reaction temperature, many by-products, high energy consumption, etc., and achieve the effect of overcoming low conversion rate and solving product backlog

Inactive Publication Date: 2012-09-12
KAIRUI ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 3) The reaction temperature is high, above 140°C, and the energy consumption is large
However, this method uses heteropolyacids as catalysts and has the disadvantages of low conversion rate, many by-products, and incomplete hydrolysis.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] main ingreadient

[0032] Secondary butyl acetate, Hunan Zhongchuang Chemical Co., Ltd., is produced by the addition of carbon four and acetic acid after ether.

[0033] Deionized water, homemade.

[0034] D006 resin catalyst, Kerry Chemical Co., Ltd.

[0035] 1). Catalytic hydrolysis of sec-butyl acetate

[0036] The series-tandem fixed-bed continuous catalytic test device used in the experiment. The system consists of 3 identical reaction towers connected in series. The diameter of the reaction tower is Di=240mm, the pipe is made of 316 stainless steel, the outer diameter of the pipe is d0=8mm, the effective length of the pipe is L=3m, and the number of pipes is n=15 , arranged in a triangle.

[0037] The catalyst adopts the D006 resin catalyst produced by Kairui Chemical Co., Ltd. The filling factor of the resin catalyst is controlled at 70%, leaving room for expansion. The reaction materials are mixed after preheating, and then pass through three series react...

Embodiment 2

[0042] Raw material space velocity is 8 / h, other is with embodiment 1. The resulting product number is KRB-2.

Embodiment 3

[0044] Raw material space velocity is 4 / h, other is with embodiment 1. The resulting product number was KRB-3.

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Abstract

The invention provides a method for producing sec-butyl alcohol through the catalytic hydrolysis of alcohol sec-butyl acetate. The method comprises the following steps of: carrying out continuously catalytic hydrolysis in a stationary bed by using the alcohol sec-butyl acetate as a raw material, and filling a catalyst in continuous tubes of the cascade multitubular stationary bed, wherein a commercial styrene cation exchange resin catalyst is used as the catalyst, and the cascade multitubular stationary bed comprises multiple identical multitubular reactors; leading the raw material alcohol sec-butyl acetate and water to enter the multitubular reactors, carrying out continuously catalytic hydrolysis reaction under the action of the catalyst to generate a sec-butyl alcohol crude product, and refining the crude product to obtain the sec-butyl alcohol with high purity. The method for producing the sec-butyl alcohol has the advantages that the conversion rate of the sec-butyl alcohol is high, the application range of the alcohol sec-butyl acetate can be increased, and the additional value of the alcohol sec-butyl acetate is increased; and therefore, the method has market promotion value.

Description

technical field [0001] The invention relates to a method for producing sec-butanol, in particular to a method for producing sec-butanol by catalytic hydrolysis of sec-butyl acetate. technical background [0002] Butene is a petrochemical by-product with low utilization rate in the chemical industry. Before the 1980s, because isobutene in the mixed C4 component could not find a reasonable application way, the development and chemical utilization of n-butene from the C4 component required a special separation unit, resulting in high cost and not important. With the production of MTBE With the construction of the plant, the concentration of n-butene (1-butene and 2-butene) in the C4 component after consumption of isobutene has become very high. Especially in the separation process of 1-butene, the purity of the by-product 2-butene can reach 95%. If we can develop fine chemical products with higher added value, it will generate greater benefits than selling them as fuel. Among...

Claims

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Application Information

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IPC IPC(8): C07C31/12C07C29/09
Inventor 刘文飞王金明
Owner KAIRUI ENVIRONMENTAL PROTECTION TECH
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