Adjusting device for propionaldehyde synthesis reactor

Abstract

The invention discloses an adjusting device for a propionaldehyde synthesis reactor. The adjusting device comprises a mounting shell, a belt conveyor is mounted in the mounting shell; a plurality of baffles are fixed to the surface of a conveying belt of the belt conveyor. An inclined table is mounted in the mounting shell; a conveying device used for pushing metallic sodium and capable of removing surface sodium oxide impurities is mounted on the inclined table; a slitting device convenient for reaction of metal sodium is mounted on the side wall of the mounting shell; quantitative kerosene is poured into the mounting shell; oxidation reaction between metal sodium in the mounting shell and air is prevented; the belt conveyor and the conveying device are matched with each other, the metalsodium strip is conveyed out of kerosene, the negative influence of sodium oxide on the reaction is avoided, meanwhile, the metal sodium strip is divided into a plurality of sodium sheets through theslitting device, the mass of the fed metal sodium can be calculated, the reaction is more sufficient, faster and more thorough after the metal sodium is fed, and the reaction efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of propionaldehyde synthesis reaction, in particular to a regulating device for a propionaldehyde synthesis reactor. Background technique [0002] Propionaldehyde is widely used in medicine, pesticide, paint, plastic, food, feed, textile, rubber additives, etc. There are many preparation methods. Commonly used methods reported in the literature include oxidation of propanol and isomerization of propylene oxide. In the past 10 years, a new synthesis method of preparing propionaldehyde by oxo synthesis of ethylene, carbon monoxide and hydrogen under low pressure has been developed using rhodium-triphenylsulfone complex as a catalyst. [0003] At present, the methods commonly used to prepare aldehydes from alcohol oxidation or carboxylic acid reduction to aldehydes are often not easy to stay in the aldehyde stage, and the reaction is not easy to control. In order to avoid this problem, two new synthesis method...

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Problems solved by technology

The two methods are easy to operate and have high reaction yields. However, the first method takes a long time to react and the reaction steps are relatively cumbersome, while the second method requires precise control of the reaction temperature and reaction time, especially the reaction time. During the process, metal sodium flakes need to be added. The control of the amount of metal sodium flakes has a great influence on the yield of the reduction reaction. However, because metal sodium is relatively active, it will oxidize in the air to form sodium oxide, and ordinary feeding devices cannot effectively remove it. Sodium oxide makes the added metal sodium have impurities, which affects the reaction. At the same time, due to the particularity of metal sodium preservation, the quality of metal sodium cannot be accurately calculated after removing the outer impurities, and it is prone to insufficient reaction and excessive reactants. Therefore, , we propose a regulating device for propionaldehyde synthesis reactor

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