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Method for prolonging alkali wash period of alcohol ketone device

A technology of alkali cleaning and alcohol and ketone, which is applied in the direction of chemical instruments and methods, preparation of organic compounds, carbon-based compounds, etc., can solve the problems of production fluctuation, difficult to reach the alkali cleaning cycle of the device, etc., and achieve less equipment and good economic benefits , easy-to-implement effects

Active Publication Date: 2009-02-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the industrial production process of the deperoxidation reaction, even if orthophosphate is added, there will still be precipitation. It’s just a small amount. And abnormal factors lead to production fluctuations from time to time. It is difficult to effectively extend the base of the device. Purpose of the wash cycle

Method used

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  • Method for prolonging alkali wash period of alcohol ketone device

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Embodiment Construction

[0007] The implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0008] as the picture shows The equipment and technological process that the present invention adopts are made up of deperoxidation reactor 1, slag removal tank 2, discharge pump 3 and the connecting pipeline that matches with it Composition of valve and instrument control system A slag removal tank 2 is arranged between the deperoxidation reactor 1 and the discharge pump 3. The slag removal tank 2 is respectively connected with the deperoxidation reactor 1 and the discharge pump 3 through pipelines. During operation, the mixed reaction liquid enters the de-peroxidation reactor 1, and the de-peroxidation mixed liquid after the de-peroxidation reaction flows through the slag removal tank 2 through the connecting pipeline by gravity, deposits the sediment in the tank, and regularly isolates and desilts , and the mixed liquor without or with ver...

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Abstract

The invention discloses an alkaline-washing period delaying method of alcohol-ketone device, which is characterized by the following: setting one deslagging tank in the peroxidate-removing flow path of cyclohexanol ketone under poor oxygen air; increasing one deslagging tank between peroxidant-removing reactor and discharge pump; making composite solution of removed peroxidate into the tank through gravity; depositing block-shaped chromate salt sediment in the tank; displaying barrier action in the device; delaying the washing period.

Description

Technical field: [0001] The invention relates to a method for removing sediment in a petrochemical production device and prolonging the cleaning period. Background technique: [0002] Adipic acid is an important organic chemical raw material for the manufacture of synthetic fiber nylon 66, polyurethane foam plastics, artificial leather, plasticizers, and pharmaceuticals, food additives, and synthetic fats. Usually, cyclohexane is oxidized to form alcohols and ketones, and then nitric acid is used to Oxidation produces adipic acid. In the production process of cyclohexane oxygen-deficient air oxidation to cyclohexanol ketone, the main reaction to generate alcohol and ketone is the deperoxidation reaction of cyclohexyl hydroperoxide, which takes place in the deperoxidation reactor. , The deperoxidation of cyclohexyl hydroperoxide produces a mixture of cyclohexanol and ketones. The decomposition reaction needs to be carried out under the catalysis of organic esters of chromiu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C29/48C07C29/50C07C45/33C07C35/08C07C49/403
Inventor 冯素征
Owner PETROCHINA CO LTD