Improved-type methyl chloroformate tower reactor

A methyl chloroformate, tower reactor technology, applied in the preparation of phosgene or haloformate, chemical instruments and methods, chemical/physics/physicochemical processes, etc., can solve the constraints on the quality and production capacity of methyl chloroformate. And safety and environmental protection, PP material is not easy to seal, the tower flange is large, etc.

Inactive Publication Date: 2014-10-01
ANHUI DONGZHI GUANGXIN AGROCHEMICAL CO LTD
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  • Abstract
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Problems solved by technology

It is precisely because the tower structure is spliced ​​with modified graphite polypropylene pipes that it is very easy to leak at the junction, and the flange of the tower section is large, and the PP material is not easy to seal
The above problems restrict the quality, production capacity, safety, environmental protection and other issues of phosgenation reaction to generate methyl chloroformate

Method used

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  • Improved-type methyl chloroformate tower reactor

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] Such as figure 1 As shown, the improved methyl chloroformate tower reactor includes a tower body and a material outlet 7, a material inlet 2, a sewage outlet 1, a frozen water inlet 3, a frozen water outlet 4, and an air inlet 12 arranged on the tower body. and exhaust gas outlet 8, the tower body is composed of an upper tower body 9 and a lower tower body 10, and a soft joint 11 is installed between the upper tower body 9 and the lower tower body 10; the sealing surface of the tower joint adopts a graphite surface, and the surface Sealing lines are engraved on it; the upper tower body 9 and the lower tower body 10 are left with a vent port 5 and a thermometer port 6; the air inlet 12 in the tower is provided with a graphite Raschig ring as a redistributor, and the upper tower body Body 9 tops are also equipped with demisters.

[001...

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Abstract

The invention discloses an improved-type methyl chloroformate tower reactor. The improved-type methyl chloroformate tower reactor comprises a tower body, as well as a material outlet, a material inlet, a drain outlet, a frozen water inlet, a frozen water outlet, a gas inlet and a tail gas outlet which are formed in the tower body, wherein the tower body consists of an upper tower body and a lower tower body; a flexible joint is installed between the upper tower body and the lower tower body; the sealing surface of the tower joint is a graphite surface, and a seal line is carved on the surface; emptying openings and temperature meter openings are both formed in the upper tower body and the lower tower body; the gas inlet in the tower body is provided with a graphite Raschig ring used as a re-distributor; the top of the upper tower body is also provided with a demister. The tower reactor disclosed by the invention can enable the capacity of methyl chloroformate to be increased from 4t / h to 10t / h, and enable the content of the methyl chloroformate to be increased from 85%-95% to 92%-98%; moreover, the leakage cannot be generated in the production field environment as the graphite seal surface is adopted.

Description

technical field [0001] The invention relates to the technical field of chemical reactors, in particular to an improved methyl chloroformate tower reactor. Background technique [0002] Reactor is a common method used in chemical production to combine two or more materials at a certain pressure and temperature. [0003] A device that reacts below, and is often used for countercurrent contact reactions of gases and liquids. In general, after the materials enter the tower, under the condition of steam or other external heating (or cooling), the materials will undergo chemical reactions due to the characteristics of the materials. The existing methyl chloroformate reactor adopts a tubular structure, with heads up and down, and a distributor in the middle. The material of the tubes is polypropylene mixed with graphite powder. It is precisely because the tower structure is twisted with modified graphite polypropylene pipes, it is very easy to leak at the junction, and the flange...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00C07C69/96C07C68/02
CPCY02P20/141
Inventor 陈永贵黄中桂蔡小林黄锋黄晓平罗利忠钱潮涌吕礼轮
Owner ANHUI DONGZHI GUANGXIN AGROCHEMICAL CO LTD
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