Production process for preparing cyclohexanone by oxidizing cyclohexene and laughing gas by using cobalt-based catalyst

Abstract

The invention discloses a production process for preparing cyclohexanone by oxidizing cyclohexene and laughing gas by using a cobalt-based catalyst. The process is mainly applied to a synthesis section of adipic acid in a nylon industry chain. The cobalt-based catalyst is a cobalt-containing salt, cobalt-containing oxide, cobalt simple substance or a cobalt-containing solid catalyst. According to the invention, nitrous oxide (laughing gas) and cyclohexene in the nitric oxide waste gas generated in the adipic acid working section directly react under the action of the catalyst to produce cyclohexanone, so that the process not only solves the problem of treating the waste gas laughing gas, but also reduces the consumption of oxygen in the adipic acid working section; and meanwhile, the energy consumption and three-waste treatment in the cyclohexanol oxidation process are also reduced. Therefore, the catalyst and the technical process have good application prospects, have the advantages of optimizing reaction products, reducing separation cost and the like, and accord with the development trend of green chemical industry.

Description

technical field [0001] The invention relates to a production process for producing cyclohexanone by oxidation of cyclohexene and nitrous oxide with a cobalt-based catalyst, which is applied to the nylon industry in the chemical production process. The technology belongs to the field of catalyst synthesis, the field of clean utilization of nylon chemical industry and the field of air pollution control. Background technique [0002] The chemical industry is closely related to our life, and it is an indispensable and important part of China's economic development, which promotes my country's economic development. At present, the problem of environmental pollution caused by chemical production is very serious. As the country advocates the sustainable development strategy, green chemical technology is gradually developed. [0003] Cyclohexanol and cyclohexanone (commonly known as KA oil) are widely used organic chemical raw materials. Most of them are used in the industry to pre...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in the adipic acid section in the current nylon industry: (1) The conversion rate of cyclohexene to cyclohexanol and cyclohexanone is low, and the subsequent cyclohexanol oxidation process is required after the selectivity is poor; (2) The subsequent nitric acid oxidation Part of the laughing gas generated during the process is difficult to handle

The invention provides a cobalt-based catalyst for the production process of cyclohexene and nitrous oxide to prepare cyclohexanone, realizes the process of synthesizing cyclohexanone from cyclohexene and nitrous oxide under the cobalt-based catalyst, and solves the above-mentioned transformation Low efficiency, poor selectivity, cumbersome subsequent cyclohexanol oxidation process and difficult handling of laughing gas

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