Reaction kettle

Abstract

The invention discloses a reaction kettle capable of manufacturing various types of chemical raw materials by a continuous hydrogenation method, which comprises a cylinder and a pipeline. The cylinder is welded with a reinforcing tube; and the pipeline is fixed on the reinforcing tube. Before being welded, the reinforcing tube can be processed according to the outer diameter of the welded pipeline; simultaneously, the welded part can be also machined, thereby the welding strength of the pipeline is greatly reduced, the welded part is quite uniform, the pipeline is protected, the service life of the pipeline is prolonged, and the maintenance difficulty of the reaction kettle is reduced; once the pipeline is worn and needs to be replaced, no hole needs to be opened on the reaction kettle, the welding area of the reaction kettle is not increased, and no new leak point is added. The pipeline welding structure on the reaction kettle is applicable to other types of reaction kettles.

Description

technical field [0001] The invention relates to a pressure vessel, in particular to a reaction kettle for producing various chemical raw materials by a continuous hydrogenation method. Background technique [0002] With the continuous advancement of science and technology, sorbitol, xylitol, maltitol and furfuryl alcohol and other products required by chemical and pharmaceutical industries are produced by continuous hydrogenation method, which is the most core equipment in the production of such products It is a kind of reactor, on which various pipes are directly welded, such as feed, discharge and catalyst pipes. At the same time, in order to increase production capacity, the manufacturer requires the volume of the reactor to be larger and larger. 30m 3 , in the production process, the working pressure is required to reach 10-13MPa, and the working temperature is to reach 150-200°C, which puts forward higher requirements for welding various pipes, and requires that each w...

AI Technical Summary

Problems solved by technology

This method of directly welding pipelines on the reactor has the following disadvantages: 1. Due to the large size of the reactor, opening holes on the reactor cannot be processed on the machine tool, so the holes opened are irregular, and it is difficult to weld the pipelines. Difficult; 2. Once the welded pipe wears and needs to be replaced, it is necessary to open holes in the original welded part, which not only increases the difficulty of maintenance, but also further expands the welded area and increases the probability of leakage points

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