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

A carbon-9 petroleum resin and multi-tank series-connected technology is applied in the field of multi-tank series continuous thermal polymerization to produce carbon-9 petroleum resin technology, which can solve the problems of low output, single variety, unstable quality, etc. The effect of reducing energy consumption

Inactive Publication Date: 2007-07-25
东营市神州化工有限公司
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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.

Method used

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

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Experimental program
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Embodiment

[0013] (1) Turn on the pump to feed the material, use the circulation valve to adjust the feed rate to gradually increase at about 1500L / h, start to feed the distillation tower, and determine the opening of the heat transfer oil valve of the preheater and reboiler according to the temperature in the tower The temperature of the feed section is controlled at about 135°C.

[0014] At the beginning, there is no liquid level at the bottom of the tower (high vacuum, high feed temperature, and light components of the material flow out quickly), pay attention to the liquid level of the buffer tank of the side line product and the reflux tank at the top of the fractionation tower, and start to implement total reflux operation. After that, slowly transfer to the control of normal operating parameters.

[0015] When the temperature at the bottom of the tower shows the liquid level, control the temperature at the bottom of the tower at 170°C to 180°C, control the temperature at the measu...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F240/00
Inventor 高俊民刘伟
Owner 东营市神州化工有限公司
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