Supergravity reactor for intensifying modification of polysaccharide high polymer

Abstract

The invention discloses a supergravity reactor for intensifying the modification of a polysaccharide high polymer. An outer cylinder body is in a horizontal type structure, the outer cylinder body is internally provided with a reaction inner cylinder, a speed reducer I is connected with a stirring shaft through a coupler, the stirring shaft penetrates through a through hole positioned on an end cover of the outer cylinder body to be inserted into the reaction inner cylinder, and the stirring shaft is fixed on two ends of the outer cylinder body through bearing seats positioned on two ends of the stirring shaft; the outer side of the reaction inner cylinder is provided with a jacket, a main inlet and outlet is arranged on the outer cylinder body, the main inlet and outlet is communicated with the reaction inner cylinder, the stirring shaft is provided with an inner spiral band and an outer spiral band, and the inner spiral band and the outer spiral band are reversely arranged along an axial direction; and the radius of the inner spiral band is smaller than the radius of the outer spiral band. According to the supergravity reactor, the inner spiral band and the outer spiral band move at high speed back and forth to generate strong centrifugal force and shearing force so as to enhance mass transfer and micromixing effect, so that the reaction is intensified, and the reaction time is effectively shortened; in addition, the outer spiral band is capable of scraping to remove a wall-adhering material in time, so that the product quality is enhanced.

Description

technical field [0001] The invention relates to a high-gravity reactor, in particular to a high-gravity reactor modified by polysaccharide polymers. Background technique [0002] Polysaccharide polymers include starch, lignocellulose, chitosan, etc. Polysaccharide polymers are generally crystalline polymers, consisting of crystalline regions and amorphous regions. Hydrogen bonds are formed to form a highly crystalline structure. Most of the reagents can only reach the amorphous region, but not the crystalline region. Therefore, in order to improve the modification and deep processing efficiency of polysaccharide crystalline polymers, they must be activated. [0003] The development and research of high-gravity technology began in the late 1970s. Professor Ramshaw of the British ICI company first researched and applied for a patent EP0002568, which disclosed a packed high-gravity rotating bed (rotating packed bed). As a new engineering technology of process intensification, ...

AI Technical Summary

Problems solved by technology

The currently used modification equipment generally adopts the traditional tank-type stirred reactor, the reaction is intermittent, the reaction time is long, the reaction is discontinuous, the quality of different batches of products is unstable, and because the heating area of ​​a single tank-type reactor is very limited, Therefore, the production line of the same scale requires more reaction equipment, greater labor intensity, namely higher labor costs and greater power consumption, and cannot solve the problem of sticking to the wall during the reaction process. Therefore, the loss of raw materials is also greater. Product quality control is difficult

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