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Phrcess of coproducing methyl tert-butyl ether and tert-butyl alcohol

A technology for the production of methyl tert-butyl ether and its production method, which is applied in the field of co-production of methyl tert-butyl ether and tert-butanol, can solve the problems of insufficient refinement of the process flow, inability to borrow equipment, increase in equipment and investment, etc. Achieve the effect of saving equipment investment, avoiding separation difficulty, and saving separation equipment

Inactive Publication Date: 2007-08-22
西安道特石化工程有限公司
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Problems solved by technology

Its main problem is: the process does not make full use of the chemical reaction between the streams to separate the materials, so that the process is not refined enough, and the equipment and investment are increased.
The unit production process is divided into systems, and the equipment cannot be borrowed from each other. Therefore, it has more equipment than the co-production process and requires a large investment.

Method used

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  • Phrcess of coproducing methyl tert-butyl ether and tert-butyl alcohol
  • Phrcess of coproducing methyl tert-butyl ether and tert-butyl alcohol

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Embodiment Construction

[0027] Referring to Fig. 1, the production method of the present invention operates in the system shown in the figure, and this system comprises front, middle and rear reactor R01A, R01B, R01C, tert-butanol rectification tower T01, catalytic rectification tower T02, extraction Tower T04 and separation tower T03 and their corollary equipment, the specific implementation steps of the present invention are as follows:

[0028] 1. Utilizing the principle that isobutene in the C4 fraction reacts preferentially with methanol in methanol water (where the methanol content is 6±4%), the C4 fraction is preheated to 80±5°C through the preheater E01, and then pretreated After the reduction of device V01, it enters the lower part of the pre-reactor R01A, and returns the methanol water from the bottom of the extraction tower T04 to the upper part of the pre-reactor, and contacts with the C4 cut countercurrently. Under the action of the catalyst (the catalyst usually adopts acid resin ), the...

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Abstract

The present invention relates to process of co-producing methyl tert-butyl ether and tert-butyl alcohol with isobutene and methanol in C4 fraction. The present invention features that two kinds of product are produced in an identical equipment with reduced investment, and that separation is completed through several reactions, resulting in simplified equipment and facilitated separation.

Description

Technical field [0001] The present invention relates to a production method of methyl tert-butyl ether and tert-butyl alcohol, in particular to a production method of co-producing methyl tert-butyl ether and tert-butyl alcohol by using isobutylene and methanol water in the carbon four fraction. Background technique [0002] Methyl tert-butyl ether (MTBE for short) and tert-butyl alcohol (TBA for short) are both petrochemical products that can be used as chemical raw materials and gasoline additives. At present, the production methods for producing MTBE at home and abroad generally adopt the "one inversion and three towers" production model. The one inversion is the reactor, and the three towers are the azeotrope tower, extraction tower (also known as water washing tower) and methanol recovery. Tower (also known as methanol distillation tower). The typical process flow is as follows: [0003] Referring to Figure 2, the C4 fraction and methanol enter the raw material tanks V...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C41/06C07C29/04C07C31/12C07C43/04
Inventor 褚雅志张喜文王胜利马晓迅
Owner 西安道特石化工程有限公司
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