A continuous cracking and rectifying device

Abstract

The invention discloses a novel cracking and rectifying device and belongs to the field of chemical equipment. The cracking and rectifying device comprises a preheating kettle, a gear pump and a tower body. The cracking and rectifying device is characterized in that the preheating kettle is in a structure with a jacket; one side of the preheating kettle is communicated with a raw material supply tank; the other side of the preheating kettle is connected with the gear pump; the tower body consists of a material distributor and a reaction pipeline; the reaction pipeline is sequentially divided into a cracking section, a rectifying section and a constant-temperature section from bottom to top and the cracking section, the rectifying section and the constant-temperature section are connected through flanges; the material distributor is arranged between the cracking section and the rectifying section and connected with the gear pump through a pipeline; a pipeline of the cracking section is located on a base and is higher than the preheating kettle; the bottom of the pipeline of the cracking section is connected with the preheating kettle through a pipeline; the top of the tower body is connected with a sealing head; an outlet is formed in the sealing head. The cracking and rectifying device is simple in structure, low in energy consumption, high in cracking yield, stable in quality and especially applicable to industrialized popularization and application for cracking and rectifying dicyclopentadiene.

Description

technical field [0001] The invention belongs to the field of chemical equipment, and relates to a liquid chemical product production device, in particular to a continuous cracking and rectifying device. Background technique [0002] Monocyclopentadiene is an important raw material for chemical products in the fields of pharmaceuticals and electronic chemicals. At room temperature, monocyclopentadiene itself is easily polymerized to form stable dicyclopentadiene during storage, and a large amount of heat is released during the polymerization, resulting in an explosion. If monocyclopentadiene is used as a raw material, dicyclopentadiene needs to be cracked at 170°C. [0003] In the field of chemical industry, the cracking device mostly uses tank-type cracking, uses heat transfer oil as the heat carrier, and connects the rectification tower to the tank. Due to the high cost of the cracking kettle, large station area, high energy consumption, and low thermal conductivity, the ...

AI Technical Summary

Problems solved by technology

Due to the high cost of the cracking kettle, large station area, high energy consumption, and low thermal conductivity, the materials in the kettle are extremely unevenly heated. Pollution

After each batch of production is completed, it is necessary to cool down and clean the waste in the kettle before re-feeding, resulting in a low production rate

As for dicyclopentadiene, it is very easy to polymerize when it is in a high temperature state for a long time in the cracking tank, and the heat release is large. If it is not handled properly, the temperature in the tank will rise sharply and it will easily explode.

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