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Synthesis method for petrochemical methyl tertiary butyl ether

A technology of methyl tert-butyl ether and refined methyl tert-butyl ether, which is applied in the field of synthesis and synthesis of petrochemical product methyl tert-butyl ether, and can solve problems such as unsatisfactory, many side reactions, and energy waste needs

Active Publication Date: 2015-09-23
SHIJIAZHUANG DINGYING CHEM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] As can be seen from the above description, when synthesizing methyl tert-butyl ether, due to the limitations of the prior art, there are many side reactions and low isobutylene conversion in the synthesis process, resulting in waste of energy and unsatisfactory demand

Method used

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  • Synthesis method for petrochemical methyl tertiary butyl ether
  • Synthesis method for petrochemical methyl tertiary butyl ether
  • Synthesis method for petrochemical methyl tertiary butyl ether

Examples

Experimental program
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Embodiment 1

[0071] Embodiment 1 The synthetic method of petrochemical product methyl tert-butyl ether of the present invention

[0072] Including the following steps:

[0073] (1) 10 mol of raw material isobutylene sent from the upstream device enters the isobutylene raw material tank, where after sedimentation and separation of water, after the isobutylene raw material pump boosts the pressure, it is sent to the isobutylene-methanol mixer through a flow meter and a flow control valve;

[0074] (2) Send methanol to the isobutylene-methanol mixer after pressurized by the methanol feed pump from the tank area outside the device, and control 10.9mol of methanol through a flow meter and a flow regulating valve;

[0075] (3) Methanol and isobutene are fully mixed in the isobutene-methanol mixer, preheated to 33°C by the raw material preheater, and then enter the etherification reactor;

[0076] (4) Catalyst 22.4g is housed in etherification reactor, under the effect of catalyst and pressure 0...

Embodiment 2

[0082] Embodiment 2 The synthetic method of petrochemical product methyl tert-butyl ether of the present invention

[0083] Including the following steps:

[0084] (1) 10 mol of raw material isobutylene sent from the upstream device enters the isobutylene raw material tank, where after sedimentation and separation of water, after the isobutylene raw material pump boosts the pressure, it is sent to the isobutylene-methanol mixer through a flow meter and a flow control valve;

[0085] (2) Send methanol to the isobutylene-methanol mixer after pressurized by the methanol feed pump from the tank area outside the device, and control 10.8mol of methanol through a flow meter and a flow regulating valve;

[0086] (3) Methanol and isobutene are fully mixed in the isobutene-methanol mixer, and then enter the etherification reactor after being preheated to 30°C by the raw material preheater;

[0087] (4) Catalyst 16.8g is housed in etherification reactor, under the effect of catalyst and...

Embodiment 3

[0093] Embodiment 3 The synthetic method of petrochemical product methyl tert-butyl ether of the present invention

[0094] Including the following steps:

[0095] (1) 10 mol of raw material isobutylene sent from the upstream device enters the isobutylene raw material tank, where after sedimentation and separation of water, after the isobutylene raw material pump boosts the pressure, it is sent to the isobutylene-methanol mixer through a flow meter and a flow control valve;

[0096] (2) Methanol is sent to the isobutylene-methanol mixer after being pressurized by the methanol feed pump from the tank area outside the device, and 11mol of methanol is controlled through a flow meter and a flow regulating valve;

[0097] (3) Methanol and isobutene are fully mixed in the isobutene-methanol mixer, preheated to 35°C by the raw material preheater, and enter the etherification reactor;

[0098] (4) Catalyst 28g is housed in etherification reactor, under the effect of catalyst and pres...

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Abstract

The invention relates to a synthesis method for petrochemical methyl tertiary butyl ether, and belongs to the technical field of petrochemical engineering. According to the synthesis method, a raw material isobutene component delivered from an upstream installation and methyl alcohol delivered from an off-site tank field after being pressurized through a methyl alcohol feed pump are mixed in an isobutene-methyl alcohol mixer, and etherification reaction is performed further under the action of a catalyst to synthetize the methyl tertiary butyl ether. By adopting the method, the percent conversion of the isobutene reaches up to 99.8 percent; moreover, the used catalyst can be recycled; the obtained product is stable in quality, good in selectivity, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a synthesis method, in particular to a synthesis method of a petrochemical product methyl tert-butyl ether, which belongs to the technical field of petrochemical industry. Background technique [0002] Methyl tert-butyl ether (MTBE) is a gasoline additive with a high octane number (research octane number 115). It is good for starting, and it is often used in the blending of unleaded gasoline and low lead oil. MTBE can also be re-cracked into isobutylene as a raw material for rubber and other chemical products. The best quality methyl tert-butyl ether can be used as medicine and is a medicine intermediate. [0003] In the prior art, methyl tert-butyl ether is synthesized using methanol and isobutylene as raw materials with the aid of acidic catalysts, among which resin catalysts are the most widely used catalysts in industry. Catalysts for the synthesis of methyl tert-butyl ether include hydrofluoric acid, sulfuric acid, styr...

Claims

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Application Information

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IPC IPC(8): C07C41/06C07C43/04B01J31/26
CPCY02P20/584C07C41/06B01J31/26B01J2231/32C07C43/04
Inventor 乔亮刘凤东刘玉龙郝兴刚康志荣杨连宝宋艳朝
Owner SHIJIAZHUANG DINGYING CHEM ENG
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