Continuous reaction process and continuous reaction equipment for hot melting reaction

Abstract

The invention discloses a continuous reaction process and continuous reaction equipment for a hot melting reaction.A powder mixer is used, and a plurality of substances participating in reaction are continuously added in proportion at the same time, so that the reaction materials are dispersed and mixed at a high speed in the powder mixer under the high-speed shearing force of the mixer, and continuous reaction is carried out; a jacket is arranged on the outer ring of the powder mixer, and a circulating heat-conducting medium is introduced into the jacket, so that heat required by reaction and heat released are efficiently circulated. The continuous and stable production of the hot melting reaction can be realized, the final yield of the product is high, the quality is stable, the reaction time is short, and the reaction energy consumption is low.

Description

technical field [0001] The invention relates to the field of hot melting reaction, in particular to a continuous reaction process and continuous reaction equipment for hot melting reaction. Background technique [0002] The existing hot melting reaction is generally a kettle reaction, and the reaction process is mainly divided into three stages: (1) the material absorbs heat and simultaneously transforms from a solid substance into a semi-liquid or liquid state, (2) heating the semi-liquid or liquid substance, The activation energy required for the reaction is given to trigger the reaction. This reaction will be accompanied by a large amount of heat of reaction. (3) The heat of reaction will cause the material to overheat. At this time, timely and effective cooling measures are required to quickly take away the heat of reaction. [0003] Generally, the following steps are adopted: (1) Add the reaction materials to the reactor, then stir and heat at the same time. 2) During ...

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Problems solved by technology

3), the thermal melting reaction is an exothermic reaction, which often causes the temperature of the material to rise rapidly, and overheating is generally unavoidable. At this time, the traditional method is to add a part of new material to lower the temperature control. This control is often inaccurate. This It is also an important reason for the unstable quality of the kettle-type hot-melt reaction product

4), the materials added in the final temperature control stage often cannot guarantee their complete reaction, and the unreacted substances will become impurities, which is also the main reason for the decrease in the final yield of the product

[0005] 1) The existing reaction method is kettle-type batching, which cannot work continuously. During the reaction process, there are often problems with temperature control and uneven heat distribution in the kettle. When the temperature is too high, the material will be decomposed or the kettle will be sprayed, which will reduce the yield.

[0006] 2) Using the reaction material to absorb temperature to take away the heat of reaction, it is impossible to achieve precise temperature control and ensure that this part of the material reacts completely

[0007] 3) The reaction time is too long, and the reaction time required for different sizes of kettles is 1 to 6 hours, and the energy consumption is relatively large

[0008] 4) The energy required for temperature rise and the excess energy released by the reaction heat are in an overlapping state, and cannot be converted into a timely energy feedback mechanism that can be used mutually

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