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Comprehensive utilization process of C5 petroleum resin polymerization liquid

A technology of petroleum resin and polymer solution, which is applied in the direction of aluminum chloride, aluminum halide, etc., can solve the problems of increasing operating costs and subsequent disposal of salt slag, and achieves the effects of saving resources, reducing alkaline washing wastewater, and improving quality

Active Publication Date: 2021-06-15
NANJING YUANGANG FINE CHEMICALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3) The salt content in the wastewater neutralized by sulfuric acid is very high, and the main components are NaCl and Na 2 SO 4 , reaching 1.67% (with AlCl 3 total), far exceeding the salt content index requirement for waste water connection (salt content less than 0.6%); with increasingly stringent environmental protection requirements, the waste water needs to be desalinated, which not only increases operating costs, but also brings difficulties in the subsequent disposal of salt slag

Method used

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  • Comprehensive utilization process of C5 petroleum resin polymerization liquid
  • Comprehensive utilization process of C5 petroleum resin polymerization liquid
  • Comprehensive utilization process of C5 petroleum resin polymerization liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Under the condition of 65°C, use water to remove the C5 petroleum resin polymer solution (mainly containing AlCl 3 Content: 1.0%, light carbon five solvent content: 55.5%, petroleum resin content: 40.0%, small molecule petroleum resin content: 3.5%. ), the volume ratio of water and C5 petroleum resin polymer solution is 1:30; after washing the C5 petroleum resin polymer solution, the AlCl in the polymer solution 3 The residual amount was 0.0350%.

[0034] After water washing, the C5 petroleum resin polymer solution is then subjected to alkali washing and ammonia washing in sequence; the alkali washing conditions are: the alkali concentration in alkaline water is 0.5%, the alkali washing temperature: 80°C; the ammonia washing conditions are: the ammonia water concentration is 2.0%, and the ammonia washing temperature is: 70°C, the volume ratio of alkaline water to the resin polymerization solution after water washing is 1:15; the volume ratio of ammonia water to the...

Embodiment 2

[0048] (1) Under the condition of 65°C, use water to remove the C5 petroleum resin polymer solution (mainly containing AlCl 3 Content: 1.0%, light carbon five solvent content: 55.5%, petroleum resin content: 40.0%, small molecule petroleum resin content: 3.5%. ) in AlCl 3 , the volume ratio of water and C5 petroleum resin polymer solution is 1:25; after washing the C5 petroleum resin polymer solution, the AlCl in the polymer solution 3 The residual amount was 0.0280%.

[0049] After water washing, the C5 petroleum resin polymer solution is subjected to alkali washing and ammonia washing in sequence; the alkali washing conditions are: the alkali concentration in alkaline water is 1.0%, the alkali washing temperature: 80°C; the ammonia washing conditions are: the ammonia water concentration is 2.0%, and the ammonia washing temperature is: 70°C, the volume ratio of alkaline water to the resin polymerization solution after water washing is 1:15; the volume ratio of ammonia water...

Embodiment 3

[0060] (1) Under the condition of 65°C, use water to remove the C5 petroleum resin polymer solution (mainly containing AlCl 3 Content: 1.0%, light carbon five solvent content: 55.5%, petroleum resin content: 40.0%, small molecule petroleum resin content: 3.5%. ) in AlCl 3 , the volume ratio of water and C5 petroleum resin polymer solution is 1:20; after washing the C5 petroleum resin polymer solution, the AlCl in the polymer solution 3 The residual amount was 0.0220%.

[0061] After water washing, the C5 petroleum resin polymer solution is subjected to alkali washing and ammonia washing in sequence; the alkali washing conditions are: the alkali concentration in alkaline water is 1.0%, the alkali washing temperature: 80°C; the ammonia washing conditions are: the ammonia water concentration is 2.0%, and the ammonia washing temperature is: 70°C, the volume ratio of alkaline water to the resin polymerization solution after water washing is 1:15; the volume ratio of ammonia water...

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Abstract

The invention discloses a comprehensive utilization process of a C5 petroleum resin polymerization liquid. The process comprises the following steps: removing AlCl3 in the C5 petroleum resin polymerization liquid by water washing, dissolving most of AlCl3 in the C5 petroleum resin polymerization liquid into water at a certain temperature, and carrying out alkali washing and ammonia washing on the C5 petroleum resin polymerization liquid without AlCl3 to obtain a qualified petroleum resin product; neutralizing the alkali washing liquid and the ammonia washing liquid with acid to prepare aluminum hydroxide solid; and adding an accelerant and the aluminum hydroxide solid into AlCl3-containing water washing liquid generated by a water washing unit, and carrying out polymerization reaction at a certain temperature to obtain a polyaluminum chloride product. The generation of alkali washing wastewater is greatly reduced from the source, and a large amount of alkali and sulfuric acid are saved; and meanwhile, resource utilization of the solid aluminum hydroxide and AlCl3 in the wastewater is realized, the requirement of up-to-standard discharge is met, and obvious economic benefits are brought.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a comprehensive utilization process of C5 petroleum resin polymer liquid. Background technique [0002] C5 petroleum resin is mainly made of about 60% piperylene, C5 monoolefin, styrene, etc., with AlCl 3 As a catalyst, it is obtained through cationic polymerization, and then through catalyst removal, solvent removal, small molecule petroleum resin removal and other processes. [0003] The removal of catalyst, what adopt at present is alkaline water elution method, with excess alkaline water, C5 petroleum resin polymer solution (mainly containing AlCl 3 : 0.7% ~ 1.2%, light carbon five solvent: 40.0% ~ 60.0%, petroleum resin: 35.0% ~ 55.0%, small molecule petroleum resin: 2.0% ~ 10.0%. ) in AlCl 3 The acid and alkali are neutralized in water, and after the oil and water are separated, the oil phase is washed with water to remove a small amount of alkali r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/56C08J11/00C08L57/02
CPCC01F7/56C08J11/00C08J2357/02
Inventor 张雯赵贤广郑正卜群李明磊
Owner NANJING YUANGANG FINE CHEMICALS CO LTD