A kind of adjusting device for propionaldehyde synthesis reactor

Abstract

The invention discloses a regulating device for a propionaldehyde synthesis reactor, comprising an installation shell, a belt conveyor is installed in the installation shell, and a plurality of baffles are fixed on the surface of the conveyor belt of the belt conveyor, and the installation shell is An inclined table is installed inside, and a conveying device for pushing sodium metal and capable of removing surface sodium oxide impurities is installed on the inclined table, and a slitting device for convenient sodium metal reaction is installed on the side wall of the installation shell. Pour a certain amount of kerosene into the installation shell to prevent the oxidation reaction of sodium metal and air in the installation shell. It has a negative impact on the reaction. At the same time, the metal sodium strip is divided into several sodium sheets by the slitting device, and the mass of the metal sodium can be calculated, so that the reaction after the metal sodium is added is more sufficient, fast, and more thorough, 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 has a wide range of uses in medicine, pesticides, coatings, plastics, food, feed, light textiles, rubber auxiliaries, etc. There are many preparation methods. Common methods reported in the literature include propanol oxidation, propylene oxide isomerization, etc. In the past 10 years, a new synthesis method for the preparation of propionaldehyde by low-pressure oxo synthesis of ethylene, carbon monoxide and hydrogen, using rhodium-triphenylpyridine complex as a catalyst, has been developed. [0003] At present, the commonly used method for preparing aldehyde from alcohol oxidation or from carboxylic acid reduction is 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 ...

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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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