Technique for producing petroleum resin of carbon - 9 through continuous hot polymerization in cascade connected multiple kettles

Abstract

This invention relates to a method for producing light color C9 petroleum resin by continuous heat polymerization in multiple kettles in series. The method comprises: (1) pre-treating C9 raw materials; (2) performing heat polymerization in multiple kettles in series for 20-30 h; (3) sending the polymerization products into a primary evaporator, then sending into a secondary film-falling flash evaporator to remove the solvent, slicing, and cooling to obtain the final product. The method adopts negative pressure distillation to purify the raw materials. Heat polymerization in multiple kettles in series can effectively lower the energy consumption. Besides, secondary film-falling flash evaporator is adopted to remove the solvent, thus the solvent removal efficiency is increased and the resin appearance is improved.

Description

1. Technical field: [0001] The invention relates to a method for producing a light-colored C9 petroleum resin product, in particular to a process for producing C9 petroleum resin by continuous heat polymerization in series with multiple kettles. 2. Background technology: [0002] At present, the manufacturers of C9 petroleum resin in my country are small in scale and relatively single in variety. At the same time, the technology used in the production of C9 petroleum resin in China is the continuation of the old foreign technology, resulting in problems such as single variety and unstable quality of C9 petroleum resin products produced by most manufacturers. Domestically, mixed carbon nine is used as the initial raw material, so that the color of the product is dark and unstable. In addition, most domestic manufacturers use BF3---diethyl ether complex as catalyst, single-pot batch operation, small scale, low output, and the problem of catalyst removal, which also leads to u...

AI Technical Summary

Problems solved by technology

[0002] At present, the manufacturers of C9 petroleum resin in my country are small in scale and relatively single in variety.

At the same time, the technology used in the production of C9 petroleum resin in China is the continuation of the old foreign technology, resulting in problems such as single variety and unstable quality of C9 petroleum resin products produced by most manufacturers.

Domestically, mixed carbon nine is used as the initial raw material, so that the color of the product is dark and unstable

In addition, most domestic manufacturers use BF3---ether complex as catalyst, single-pot batch operation, small scale, low output, and there is also the problem of catalyst removal, which also leads to unstable product quality.

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