Method and device for improving primary conversion rate of methanol in synthesized chloromethane

A technology for methyl chloride and conversion rate, which is applied in the field of improving the primary conversion rate of methanol in the synthesis of methyl chloride, can solve the problems of low single-pot production capacity, low primary conversion rate of raw methanol, etc., so as to improve the primary conversion rate and eliminate reactor death. area, the effect of reducing the unit consumption of methanol

Pending Publication Date: 2020-11-06
JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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  • Application Information

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Problems solved by technology

[0004] Although the process of synthesizing methyl chloride by gas-liquid phase catalysis is simple, the operation is stable, and the raw material hydrogen chloride is excessive, but there are still problems such as relatively low primary conversion rate of raw material methanol and low single-pot production capacity.

Method used

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  • Method and device for improving primary conversion rate of methanol in synthesized chloromethane
  • Method and device for improving primary conversion rate of methanol in synthesized chloromethane
  • Method and device for improving primary conversion rate of methanol in synthesized chloromethane

Examples

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Embodiment 1

[0037] Embodiment 1 The method process for improving the primary conversion rate of methanol in the synthesis of methyl chloride by methanol hydrochlorination is as follows: After the excess gas phase hydrogen chloride is mixed with fresh methanol and recovered methanol (the molar ratio of hydrogen chloride to methanol is 1.05:1), enter the injector, inject The working medium of the reactor is a high-temperature zinc chloride solution catalyst (150°C) in the reactor, which is circulated through a graphite pump, and hydrogen chloride, fresh methanol and recovered methanol are further heated, vaporized, mixed, and pressurized ( After increasing by 0.08MPa), it enters the reactor through 6 feed distribution pipes.

[0038] Through the method of this embodiment, the primary conversion rate of methanol is increased from 93.4% to 97.2%.

Embodiment 2

[0040] Example 2 The method flow for improving the primary conversion rate of methanol in the synthesis of methyl chloride by methanol hydrochlorination is as follows: After the excess gas phase hydrogen chloride is mixed with fresh methanol and recovered methanol (the molar ratio of hydrogen chloride to methanol is 1.05:1), it enters the injector, injects The working medium of the reactor is a high-temperature zinc chloride solution catalyst (150°C) in the reactor, which is circulated through a graphite pump, and hydrogen chloride, fresh methanol and recovered methanol are further heated, vaporized, mixed, and pressurized ( After increasing by 0.15MPa), it enters the reactor through 4 feed distribution pipes.

[0041] Through the method of this embodiment, the primary conversion rate of methanol is increased from 93.4% to 98.2%.

Embodiment 3

[0043] Embodiment 3 The method process for improving the primary conversion rate of methanol in the synthesis of methyl chloride by methanol hydrochlorination is as follows: After the excess gas phase hydrogen chloride is mixed with fresh methanol and recovered methanol (the molar ratio of hydrogen chloride to methanol is 1.05:1), enter the injector, inject The working medium of the reactor is a high-temperature zinc chloride solution catalyst (150°C) in the reactor, which is circulated through a graphite pump, and hydrogen chloride, fresh methanol and recovered methanol are further heated, vaporized, mixed, and pressurized ( After increasing by 0.1MPa), it enters the reactor through 4 feed distribution pipes.

[0044] Through the method of this example, the primary conversion rate of methanol was increased from 93.4% to 97.5%.

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Abstract

The invention discloses a method and a device for improving the primary conversion rate of methanol in synthesized chloromethane. The method for improving the primary conversion rate of methanol in synthesized chloromethane comprises the following steps: 1) adding hydrogen chloride gas, methanol and a high-temperature catalyst solution into an ejector to obtain a reaction fluid; and 2) pressurizing the reaction fluid by an ejector, ejecting the pressurized reaction fluid via the ejector, and allowing the ejected reaction fluid to enter a reactor through a feed distribution pipe for a reaction.Meanwhile, the invention also discloses the device for improving the primary conversion rate of methanol in the synthesized chloromethane. By using the treatment method, the primary conversion rate of methanol can be improved, so the productivity of a chloromethane synthesis device is further improved, and the unit consumption of methanol is reduced.

Description

technical field [0001] The invention relates to the technical field of methyl chloride synthesis, in particular to a method and a device for improving the primary conversion rate of methanol in the synthesis of methyl chloride. Background technique [0002] Silicone is a new type of chemical product with excellent performance and wide application. It includes silicone oil, silicone resin, silicone rubber and other products, which are widely used in textiles, automobiles, construction, electronics, cosmetics and other fields of life and special fields such as national defense. Many organic silicon products mainly come from the direct method monomer synthesis device, which uses methyl chloride and silicon powder as raw materials, and the weight ratio of methyl chloride raw material reaches more than 80%. [0003] At present, the methods for producing methyl chloride mainly include methane chlorination and methanol hydrochlorination, among which methanol hydrochlorination can b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C17/16C07C19/03B01J19/24
CPCC07C17/16B01J19/24C07C19/03
Inventor 郑士朋宋祥录由成君周平张仕富
Owner JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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