Production device and production method for synthesizing acetic acid by low-pressure carbonylation of methanol

A production device and chemical synthesis technology, applied in the field of acetic acid synthesis, can solve the problems of parking maintenance, shaft seals and bearings are easily damaged, difficult to operate stably and safely, and achieve the effects of safe operation, saving investment and eliminating hidden dangers of parking.

Active Publication Date: 2019-01-04
YANKUANG GRP CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

At present, most of the technical improvements are in the rectification system, and the reaction system has few changes, especially the reactor unit, which still adopts the conventional mechanical stirring mode for gas-liquid stirring and mixing. The reaction equipment using mechanical

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  • Production device and production method for synthesizing acetic acid by low-pressure carbonylation of methanol
  • Production device and production method for synthesizing acetic acid by low-pressure carbonylation of methanol
  • Production device and production method for synthesizing acetic acid by low-pressure carbonylation of methanol

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[0048] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0049] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0050] Such as figure 1 As shown, a production device for synthesis of acetic acid by carbonylation of methanol...

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Abstract

The invention discloses a production device and a production method for synthesizing acetic acid by low-pressure carbonylation of methanol. A fluid stirring device arranged on the production device provided by the invention changes the situation that a mechanical stirring shaft seal and a transmission device are easy to damage in an operation process, eliminates dynamic seal points, and greatly improves the safe and stable operation of a system. At the same time, by matching with a CO distributor, the CO gas distribution in a reactor is more uniform, the gas-liquid two-phase mixing effect is improved, the reaction rate is increased, the reaction state of the system is optimized, and the production capacity of the device is increased from 300,000 tons per year to 600,000 tons per year.

Description

technical field [0001] The invention relates to the field of acetic acid synthesis, in particular to a production device and production method for synthesizing acetic acid by methanol low-pressure carbonylation. Background technique [0002] Acetic acid is an important chemical intermediate and a solvent for chemical reactions. Among the currently used acetic acid synthesis processes, the most commonly used one is the methanol low-pressure oxo synthesis process. This process was pioneered by the U.S. Monsanto Company in the 1970s. After years of innovation and development, the production process has undergone tremendous changes, and major breakthroughs have been made in device capacity, product quality, and production costs. [0003] In terms of process technology improvement, companies are constantly looking for new solutions, as described in the patent CN 101665424 of Beijing Zehua Chemical Engineering Co., Ltd., which combines the existing functions performed by the light...

Claims

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Application Information

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IPC IPC(8): C07C51/12C07C51/44C07C53/08B01J8/10B01J8/08
CPCB01J8/085B01J8/10C07C51/12C07C51/44C07C53/08
Inventor 张志伟李志远鲁宜武赵月东赵洋王进兵武金锋谷伟史锋锋
Owner YANKUANG GRP CO LTD
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