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Method for producing 3-methyl-2-buten-1-ol by isobutene

A technology for prenol and isobutene, which is applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problems of wasting raw material time and other costs, low conversion rate, and low quality of prenol, etc. The method is reasonable, the preparation is simple, and the effect of improving production efficiency and product quality

Inactive Publication Date: 2015-07-22
ANHUI HAIDE PETROCHEM
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Problems solved by technology

[0003] In the process of utilizing isopentenol, there is a problem of low conversion rate, which is easy to waste raw materials, time and other costs. In the case of high production pressure, it is often necessary to increase production equipment to meet the demand, and the produced isopentenol The quality of pentenol is not high

Method used

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Embodiment Construction

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further elaborated below.

[0016] A method for utilizing isobutene to produce prenyl alcohol, characterized in that: comprising the following steps,

[0017] (1) add 95% polyoxymethylene in stainless steel autoclave;

[0018] (2) join disodium hydrogen phosphate as catalyst in the stainless steel autoclave, then add tert-butyl alcohol;

[0019] (3) Replace the air in the autoclave with nitrogen after the above-mentioned raw materials have been added;

[0020] (4) Add isobutylene after air replacement, and stir at a constant speed for 2 hours;

[0021] (5) After stirring, heat the temperature to 200°C, react for 4h, then cool and discharge;

[0022] (6) Put the reacted and cooled material into the distiller for distillation;

[0023] (7) Prenol is obtained after the distillation is completed, and the yiel...

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Abstract

The invention discloses a method for producing 3-methyl-2-buten-1-ol by isobutene, and relates to the technical field of chemical product processing and making. The method comprises the following steps: adding 95% polyformaldehyde in a stainless steel autoclave, using sodium hydrogen phosphate as a catalyst, then adding tert-butyl alcohol, replacing air in the autoclave with nitrogen after the raw materials are added, next adding isobutene, stirring for 2 hours at a constant speed, increasing the temperature to 200 DEG C after stirring, reacting for 4 hours, then cooling, discharging, and feeding the materials after reaction and cooling in a distiller for distillation to obtain 3-methyl-2-buten-1-ol after distillation. According to the method, the yield can reach 85%. The method is reasonable, the preparation is simple, the operation is convenient, the yield is high, the making cost can be reduced, and the production efficiency and the product quality are improved.

Description

Technical field: [0001] The invention relates to the technical field of chemical product processing and production, in particular to a method for producing isopentenol from isobutene. Background technique: [0002] Isobutylene is an important organic chemical raw material, mainly used in the production of methyl tert-butyl ether and tert-butanol, etc., and can also be used in the production of butyl rubber, polyisobutylene, methacrylonitrile, tert-butyl mercaptan, Various organic chemical raw materials and fine chemical products such as enol, tert-butylphenol, antioxidant, tert-butylamine, etc. [0003] In the process of utilizing isopentenol, there is a problem of low conversion rate, which is easy to waste raw materials, time and other costs. In the case of high production pressure, it is often necessary to increase production equipment to meet the demand, and the produced isopentenol The pentenols are not of high quality yet. Invention content: [0004] The technical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/38C07C33/03
CPCC07C29/38C07C33/03
Inventor 黄帮义
Owner ANHUI HAIDE PETROCHEM
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