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Preparation method for 3-methyl-3-butene-1-alcohol

A technology of butene and methyl, which is applied in the field of preparation of 3-methyl-3-buten-1-ol, can solve the problems of high production cost and large investment, and achieve low production cost, low investment and reduced energy consumption. consumption effect

Inactive Publication Date: 2013-05-15
INNOVATIVE COAL CHEMICAL DESIGN INSTITUTE (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using this technology to produce 3-methyl-3-buten-1-ol, in addition to the need to react under harsh conditions of high temperature and high pressure, usually requires a large scale of production, otherwise due to large investment, the production cost is high

Method used

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  • Preparation method for 3-methyl-3-butene-1-alcohol
  • Preparation method for 3-methyl-3-butene-1-alcohol
  • Preparation method for 3-methyl-3-butene-1-alcohol

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Embodiment 1～10

[0029] The isomerization reaction is carried out in a φ25mm×510mm glass ebullating bed reactor. A baffle full of small holes and a hydrogen gas distributor are placed at the bottom of the reactor. The aperture of the baffle and distributor is about 0.01mm. The raw material inlet and The gas distributor is located under the baffle. The reaction product and hydrogen outlets are located at the upper part of the reactor, and a condensing reflux device with a vent is placed on the top of the reactor.

[0030] 20 grams of an amorphous modified Raney nickel catalyst with a particle size of 0.03-0.05 mm is added to the reactor, and the catalyst is placed on a baffle. Hydrogen enters the reactor from the gas distributor, and the hydrogen space velocity is 20-100hr -1 , the reactor is heated up to 50-120°C, and then the temperature is maintained to pump prenol into the reactor continuously for reaction, and the prenol load WWH of the catalyst is controlled to be 3.0-6.0hr -1 , the rea...

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Abstract

The invention provides a preparation method for 3-methyl-3-butene-1-alcohol. The preparation method comprises the following step of performing isomerization reaction on a raw material of isoprenealcohol in the presence of a catalyst to prepare the 3-methyl-3-butene-1-alcohol, wherein the catalyst is a granular Raney nickel type metal alloy which comprises Al, Ni and A (Al-Ni-A); A is one of Cr, Zn, Mo and Fe; the weight ratio of Al to Ni to A is 1:(0.8-0.98):(0.03-0.2); the reaction temperature of the isomerization reaction is 50 to 120 DEG C; the isoprenealcohol load WWH of the catalyst is 3.0 to 6.0 hr<-1>; and the hydrogen space velocity is 10 to 100 hr<-1>. The preparation method has the characteristics of capacity of greatly reducing energy consumption, low investment and low production cost.

Description

technical field [0001] The present invention relates to a kind of preparation method of 3-methyl-3-butene-1-alcohol, particularly relate to the use of modified Raney nickel catalyst to convert isopentenol into 3-methyl-3-butene-1 - Alcohol method. Background technique [0002] 3-Methyl-3-buten-1-ol is a colorless transparent liquid. In the traditional field of application, 3-methyl-3-buten-1-ol is mainly used in the large-scale production of solvents, dyes, surface coatings, pigments, pesticides, insecticides and citral in industry, while its The newly developed new application is used as a raw material for the production of a new generation of polycarboxylic acid series high-efficiency water reducers. The polycarboxylate high-efficiency superplasticizer synthesized with this raw material has a strong ability to maintain the dispersion of cement particles, so that the product has low dosage, high water-reducing rate, good reinforcement effect, durability, no corrosion of s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C33/025C07C29/56
Inventor 潘凡峰
Owner INNOVATIVE COAL CHEMICAL DESIGN INSTITUTE (SHANGHAI) CO LTD
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