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Methanol oxidation reaction device and method

A methanol oxidation and oxidation reactor technology, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problems of short tubes, small diameters, and extensive oxidation reactors.

Inactive Publication Date: 2017-07-07
KAIRUI ENVIRONMENTAL PROTECTION TECH
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  • Abstract
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Problems solved by technology

[0002] With the vigorous development of coal chemical and fine chemical technology in our country, large-scale polymethoxy dimethyl ether (DMMn for short) industrial devices will be born soon, but the current domestic methanol oxidation technology has huge defects
For example, due to the simple and extensive macroscopic structure of the oxidation catalyst, the tubes of the oxidation reactor are short and the tube diameter is small, resulting in serious backflow, eddy current, and turbulent flow of the oxidation reaction material, which has become a technical bottleneck for large-scale production. Technologies such as the international iron-molybdenum methanol oxidation technology also have these drawbacks

Method used

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  • Methanol oxidation reaction device and method

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Embodiment 1

[0073] In the embodiment of the present invention, in order to save costs, the tubes in the oxidation reactor are single tubes, and the specifications of the tubes are 50 mm in inner diameter and 3000 mm in height, and the bundled catalysts are filled and sealed; each tube is equipped with 10 bundles Catalyst packs, the stagger angle of two adjacent packs of catalysts is 15 degrees;

[0074] The mass percent of the active ingredient of bundled catalyst is: M O o 3 74%, Fe 2 o 3 25%, Al 2 o 3 1.0%;

[0075] The mass of the active ingredient in the packaged catalyst of the first layer (ie the uppermost layer) is 10 g, and the mass of the active component in the packaged catalyst of the second layer is 12 g, ie K=0.2.

[0076] A method for methanol oxidation, comprising the steps of:

[0077](1) Feed pretreatment: first turn on the heat transfer oil pump, and the heat transfer oil enters the shell side of the oxidation reactor from the heat transfer oil inlet; then turn ...

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Abstract

The invention discloses a methanol oxidation reaction device and method. The device comprises an oxidation reactor and a gasification heater. The top of the oxidation reactor is provided with an inlet A, the bottom is equipped with an outlet A, the lower part of one side wall is provided with a heat conducting oil inlet, the upper part of another side wall is equipped with a heat conducting oil outlet, tubes are disposed inside, and a pack catalyst loaded in the tubes; the top of the gasification heater is provided with an inlet B, the bottom is equipped with an outlet B, the upper of one side wall is provided with an oxidation component outlet, the lower part is provided with an oxidation component inlet, and another side wall is equipped with an upper inlet and a lower segment outlet, the inside is provided with scale equipped tubes; the inlet A is connected to the outlet B, the outlet A is connected to the oxidation component inlet, the inlet B is connected an external fan and methanol pump, the oxidation component outlet is connected to an external aqueous solution device for formaldehyde preparation by water absorption and a gas device for formaldehyde preparation by polycondensation, the upper segment inlet is in connection with the lower segment outlet, the heat conducting oil inlet is connected to an external heat conducting oil pump, and the heat conducting oil outlet is connected to an external "waste pan".

Description

technical field [0001] The invention relates to a methanol oxidation reaction device and method, and is a production device and method for preparing formaldehyde gas phase component or its aqueous solution by oxidation of methanol; the invention belongs to the technical fields of coal chemical industry and fine chemical industry. Background technique [0002] With the vigorous development of coal chemical and fine chemical technology in my country, large-scale polymethoxy dimethyl ether (abbreviated as DMMn) industrial devices will be born soon. However, the current domestic methanol oxidation technology has huge defects. For example, due to the simple and extensive macroscopic structure of the oxidation catalyst, the tubes of the oxidation reactor are short and the tube diameter is small, resulting in serious backflow, eddy current, and turbulent flow of the oxidation reaction material, which has become a technical bottleneck for large-scale production. Technologies such as...

Claims

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Application Information

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IPC IPC(8): B01J8/06C07C45/37C07C47/052
CPCB01J8/008B01J8/06B01J8/067C07C45/37B01J2208/065Y02P20/584
Inventor 毛进池刘文飞王文学
Owner KAIRUI ENVIRONMENTAL PROTECTION TECH
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