Safety device for oxalate production by CO gas phase oxidative coupling and temperature jump control method

A technology of oxidative coupling and safety device, which is applied in the direction of carbon monoxide or formate reaction preparation, nitrate ester preparation, temperature control by electric method, etc. It can solve the problem of high human resource consumption, difficulty in automatic and rapid processing of flying temperature, and difficulty in recovery Production and other issues to ensure the smooth progress of production, avoid danger, and save human resources

Active Publication Date: 2014-07-30
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

The safety production device and the fly temperature control method solve three problems in the prior art: 1. High consumption of human resources; 2. It is difficult to automatically and quickly deal with the runaway temperature problem; 3. It is difficult to resume production in a short time after stopping the reaction

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  • Safety device for oxalate production by CO gas phase oxidative coupling and temperature jump control method

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Embodiment 1

[0036]The safety device for producing dimethyl oxalate through gas-phase oxidation coupling of CO disclosed by the present invention comprises a first nitrogen gas control pipeline (1), a carbon monoxide gas control pipeline (2), a second nitrogen gas control pipeline (3), and a nitrogen monoxide gas control pipeline. Control pipeline (4), oxygen gas control pipeline (5), total pressure gauge (10′), methanol storage tank (11), liquid pump (12), esterification tower (13), waste water storage tank (14), gas Mixing box (15), first pneumatic four-way valve (16), second pneumatic four-way valve (17), valve controller (18), circulation pump (19), reactor (20), heating furnace (22) , fan (23), control box (24), alarm (25), dimethyl oxalate collection tank (26) and computer (27);

[0037] Among them: the above-mentioned gas control pipelines (1, 2, 3, 4, 5) all include gas pipelines connected in sequence, a pressure stabilizing valve (6), a pressure gauge (10), a stabilizing flow valv...

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Abstract

The invention discloses a safety device for oxalate production by CO gas phase oxidative coupling, which is characterized in that the device comprises a first nitrogen gas control pipeline (1), a carbon monoxide gas control pipeline (2), a second nitrogen gas control pipeline (3), a nitric oxide gas control pipeline (4), an oxygen gas control pipeline (5), a main pressure gage (10'), a methanol or ethanol storage tank (11), a liquid pump (12), an esterification column (13), a waste water storage tank (14), a gas mixing box (15), a first pneumatic four-way valve (16), a second pneumatic four-way valve (17), a valve controller (18), a circulating pump (19), a reactor (20), a heating furnace (22), a fan (23), a control box (24), an alarm (25), an oxalate collecting tank (26), and a computer (27). The device can automatically determine whether a temperature jump occurs, carry out corresponding measures, and ensure smooth production.

Description

technical field [0001] The invention belongs to the technical field of oxalate ester preparation, and in particular relates to a safety device and a runaway temperature control method for CO gas-phase oxidation coupling production of oxalate ester. Background technique [0002] Ethylene glycol is an extremely important and strategic bulk chemical raw material. my country's annual demand is more than 10 million tons, while the production capacity is only more than 3 million tons. The contradiction between supply and demand is very prominent, and a large amount needs to be imported. Coal-to-ethylene glycol technology is of great significance to alleviate the contradiction between the supply and demand of ethylene glycol in my country and to utilize coal resources efficiently and cleanly. CO gas-phase oxidative coupling to prepare oxalate is a key step in the conversion of inorganic CO to organic oxalate in coal-to-ethylene glycol technology. [0003] The reaction principle o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/36C07C67/36G05D23/19
CPCC07C67/36C07C201/02C07C69/36C07C203/04
Inventor 徐忠宁郭国聪彭思艳王志巧吕冬梅陈青松王明盛姚元根
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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