Heating system for caprolactam polymerization reaction apparatus

Abstract

The invention discloses a heating system for caprolactam polymerization reaction device, which includes a reaction cartridge constituted of an upper cartridge and a lower cartridge. A upper supporting plate is disposed in the upper cartridge, through-holes are arranged at both the upper supporting plate and the upper cartridge, and steel pipes are connected to a pair of corresponding through-hole. A distribution cavity is remained at top of the upper supporting plate and the upper cartridge, and caprolactam inlet is arranged at top of the distribution cavity. The lower cartridge is constituted of inner cartridge and outer cartridge to form jacket. Upper end of the inner cartridge is connected with bottom plate of the upper cartridge, a caprolactam outlet is disposed at bottom of the lower cartridge, and heat conductivity oil source is also included in bottom of the lower cartridge. Oil inlet and outlet are both disposed at upper cartridge and lower cartridge, the oil outlets are connected with inlet of the heat conductivity oil source by oil pipe, and the oil inlets are connected with outlet of the heat conductivity oil source by oil pump and valve. Advantages of the heating system are: fire hazard and explosion accident can be avoided, production efficiency is high, cost is low, and the heating system is adapt for heating polymerization reaction device for producing nylon section with caprolactam as raw material.

Description

technical field [0001] The invention relates to a heat exchange device. Specifically, it is a heating system for heating the caprolactam polymerization reaction device with heat conduction oil, which is suitable for heating the polymerization reaction device for producing nylon chips with caprolactam as raw material. Background technique [0002] It is well known in the nylon production industry that at present, traditional heating devices are used for the heating of the polymerization reaction device that uses caprolactam as a raw material to produce nylon chips. This traditional heating device consists of an upper cylinder and a lower cylinder. An upper supporting plate is arranged in the upper cylinder, and the surroundings of the upper supporting plate are sealed and connected with the inner wall of the upper cylinder. Both the upper support plate and the bottom plate of the upper cylinder have through holes, and the through holes on the upper support plate correspond ...

AI Technical Summary

Problems solved by technology

And because diphenyl ether is a low eutectic azeotropic mixture, its freezing point is low, and freezing may occur when the temperature is below 12.3°C, especially when driving or parking in the cold winter season, it is very easy to freeze

Once freezing occurs, production needs to be stopped for maintenance, so the production efficiency of this heating device is very low

On the other hand, since this heating device uses electric heating tubes for heating, and the power of the electric heating tubes is above 150Kw, it requires 500Kw of electricity to produce one ton of products, which consumes a lot of power and has high production costs.

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