Reaction device suitable for strong heat release system

Abstract

The invention discloses a reaction device suitable for a strong heat release system, the reaction device is of a multi-stage tubular distribution structure, a metering pump is connected with main pipes, each main pipe is connected with 2n-1 branch pipes, the branch pipe of one main pipe and the branch pipe of the other main pipe are connected with n stages of tubes through a premixer, the (2n-1) n-stage tubes are combined pairwise and connected with the (n-1)-stage tubes through a static mixer according to the rule in a decreasing manner until the two second-stage tubes pass through one first-stage tube through the static mixer, the static mixer is of a three-way tube structure, nozzles are arranged at the two ends of an inlet of the three-way tube structure, and the mixing effect of a reaction system is enhanced by each impact mixing of materials between the two tubes; and moreover, the material ratio can be homogenized, and the influence on the reaction is reduced. The inner wall of the outlet of the static mixer is of an arc protruding structure, the size of a mixing cavity in the static mixer is reduced, and the mixing effect is enhanced. The device is simple in structure, good in mixing effect and good in heat and mass transfer effect.

Description

technical field [0001] The invention belongs to the technical field of mixing reaction devices, and in particular relates to a reaction device suitable for strong exothermic systems. Background technique [0002] In the chemical production process, most of the chemical reactions involved have strong thermal effects. Such as: nitration reaction, polymerization reaction, oxidation reaction, esterification reaction, bromination reaction, condensation reaction, rearrangement reaction and diazotization reaction, etc. Generally, in this type of reaction process, in order to ensure the yield, quality and system stability of the product, stirring equipment and cooling systems are usually added to the reactor to enhance the heat transfer and mass transfer process in the reaction system. Otherwise, when the heat in the reaction system cannot be removed in time, the heat generated by the reaction will accumulate in the system, which will increase the temperature or cause local hot spo...

AI Technical Summary

Problems solved by technology

Otherwise, when the heat in the reaction system cannot be removed in time, the heat generated by the reaction will accumulate in the system, which will increase the temperature or cause local hot spots to reduce the yield and quality of the product, causing side reactions to occur in the reaction, and the reaction selectivity As the temperature rises, the reaction rate will be further accelerated, and more and more heat will be accumulated, which will cause the reaction to run out of control and cause explosions and fire accidents.

[0003] Existing batch reactors have disadvantages such as long reaction time and high energy consumption, and for strong exothermic reactions, if the heat cannot be transferred in time, it will accumulate locally , and then cause an explosion, and even cause risks such as casualties and property damage

When local thermal disturbances occur in the existing tubular reactor due to low mixing efficiency, it will cause local high temperature in the reactor or even cause a "flying temperature" accident, which will bring a greater safety risk to production

However, due to the parallel connection of multiple tubes in the ordinary tubular reactor, the problems such as uneven proportioning of local materials, low reaction conversion rate and incomplete reaction will be caused due to pipeline resistance and deformation during use.

Images