Thermosensitive material intermittent rectifying process having side material output and tower kettle cold material storage

Abstract

The invention discloses a batch rectification process of heat-sensitive materials with side-line discharge and tower bottom cold storage. The heat-sensitive material is stored in a cold state during the rectification process, and the product is mainly extracted from the side discharge port of the tower. The process is realized by a device composed of a cold storage tower kettle, a rectification tower, a condenser, a cooler, a shield pump and an evaporator. The rectification tower has a side discharge port, and the material can be extracted from the top of the tower, or can pass through The side line discharge port is taken out. The heat-sensitive material is stored in the tower kettle during the distillation process, and is cooled by the cooler in the tower kettle, which is in a cold state, which greatly reduces the probability of thermal reaction. The invention has the advantages of short rectification time, low energy consumption, low thermal decomposition rate of materials, high product purity and high yield.

Description

technical field [0001] The invention relates to a batch rectification process of heat-sensitive materials with side line discharge and tower kettle cold storage. It is a non-traditional batch rectification technology that obtains high-purity products from heat-sensitive materials through rectification. Background technique [0002] With the development of the fine chemical industry, people have higher and higher requirements for the purity of fine chemicals, and the technology of obtaining high-purity chemicals is generally valued by enterprises. Batch rectification is a commonly used separation technology in the separation of fine chemicals. Ordinary batch rectification is to put materials into the tower kettle and extract products and transition sections from the top of the tower. However, for high-purity products, ordinary batch rectification often yields The rate is low and the energy consumption is high. There are many kinds of fine chemi...

AI Technical Summary

Problems solved by technology

Batch rectification is a commonly used separation technology in the separation of fine chemicals. Ordinary batch rectification is to put materials into the tower kettle and extract products and transition sections from the top of the tower. However, for high-purity products, ordinary batch rectification often yields Low rate and high energy consumption

There are many kinds of fine chemicals, many of which are heat-sensitive and will decompose when heated, and it is difficult to achieve high purity with ordinary distillation techniques

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