Treatment method of titanium-containing distillation residual liquid

A treatment method and technology for residual liquid, applied in filtration treatment, combustion method, chemical instrument and method, etc., can solve problems such as a large amount of waste water and complex treatment process, and achieve the effect of reducing corrosion, obvious environmental protection and economic benefits

Active Publication Date: 2021-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem of this process is: a large amount of acid water containing various organic substances is produced during the hydrolysis process, which is then neutralized with alkali, and finally a large amount of waste water and waste residues are generated to be further processed, so it faces increasingly serious environmental and economic pressures
[0006] Although the above-mentioned prior art reduces the generation of acid water to a certain extent, the obtained solid waste residue still contains a small amount of water and a large amount of organic matter, and the follow-up still needs to be further processed by the current general method, and the processing process is complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Add 30mL of titanium-containing distillation raffinate into a 300mL glass reactor with mechanical stirring, reflux condenser and nitrogen protection, gradually add 100mL of methanol under stirring conditions, and react at 64°C for 2 hours. And absorption, after the reaction is finished, light yellow alcoholyzate is obtained, and the chlorine content is 30.5wt%. The above-mentioned alcoholyzate was subjected to atmospheric distillation once, the distillation temperature was 64°C, and the distillation was carried out until almost all the methanol was distilled off. After the distillation was completed, it was re-dissolved with 100mL of methanol, and then separated by filtration to obtain an organic compound with a chlorine content of 15.3wt%. Liquid waste and a small amount of solid waste. The organic waste liquid is incinerated, and the solid waste residue is landfilled.

Embodiment 2

[0044] Add 30mL of titanium-containing distillation raffinate into a 300mL glass reactor with mechanical stirring, reflux condenser and nitrogen protection, gradually add 120mL of methanol under stirring conditions, and react at 64°C for 2 hours. And absorption, after the reaction is finished, light yellow alcoholyzate is obtained, and the chlorine content is 27.6wt%. The above alcoholyzate was repeatedly distilled at atmospheric pressure for 2 times, the distillation temperature was 64°C, each distillation was until almost all the methanol was distilled, and after each distillation, it was re-dissolved with 120mL of methanol. Then filter and separate to obtain an organic waste liquid with a chlorine content of 11.5wt% and a small amount of solid waste residue. The organic waste liquid is incinerated, and the solid waste residue is landfilled.

Embodiment 3

[0046] Add 30mL of titanium-containing distillation raffinate into a 300mL glass reactor with mechanical stirring, reflux condenser and nitrogen protection, gradually add 100mL of methanol under stirring conditions, and react at 64°C for 2 hours. And absorption, after the reaction is finished, light yellow alcoholyzate is obtained, and the chlorine content is 30.5wt%. The above-mentioned alcoholyzate was subjected to atmospheric distillation once at a distillation temperature of 64° C. until almost all the methanol was distilled off. After the distillation, it was re-dissolved with 100 mL of methanol to obtain a liquid mixture with a chlorine content of 15.3 wt%. The above liquid mixture was neutralized with sodium hydroxide solid, reacted at 64°C until the solution was neutral, and then separated by pressure filtration to obtain organic waste liquid and white solid waste residue with a chlorine content of 0.4wt%. The organic waste liquid is incinerated, and the solid waste re...

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Abstract

The invention belongs to the field of industrial waste liquid treatment, and relates to a treatment method of titanium-containing distillation residual liquid. The method comprises the following steps: (1) mixing the titanium-containing distillation residual liquid with an alcohol compound for alcoholysis reaction to obtain an alcoholysis product containing hydrogen chloride; (2) carrying out distillation treatment on the alcoholysis product obtained in the step (1), and removing hydrogen chloride in the alcoholysis product to obtain an alcoholysis product with reduced chlorine content; and (3) directly carrying out solid-liquid separation on the alcoholysis product with the reduced chlorine content obtained in the step (2), or carrying out neutralization reaction on the alcoholysis product with the reduced chlorine content and an alkaline substance, and then carrying out solid-liquid separation to obtain organic waste liquid and solid waste residues. According to the method, the treatment process can be obviously shortened, waste water and waste residues generated in the titanium-containing distillation residual liquid treatment process are greatly reduced, the chlorine content in the waste liquid is greatly reduced, incineration treatment can be directly conducted, and obvious environmental protection and economic benefits are achieved.

Description

technical field [0001] The invention belongs to the field of industrial waste liquid treatment, and more specifically relates to a treatment method for distillation raffinate containing titanium. Background technique [0002] In the industrial production of polyolefins, titanium-based catalysts have been widely used due to their high catalytic efficiency and low price. A commonly used method for preparing this type of catalyst is: firstly prepare a magnesium solution, for example, prepare a magnesium solution with magnesium or a magnesium compound and a related solvent in the presence of a hydrocarbon additive, and then make the magnesium solution with a halogen-containing compound such as tetrachloride Titanium reaction to prepare magnesium-supported catalyst, during which various accelerators can be added for modification. In the above-mentioned catalyst preparation process, it is usually necessary to wash the obtained solid catalyst component with a hydrocarbon solvent t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10F23G7/00C02F101/12C02F101/30
CPCC02F9/00F23G7/008C02F1/04C02F1/66C02F1/001C02F1/06C02F2101/30C02F2101/12Y02P10/20
Inventor 贾凡王毅郭子芳苟清强马冬李颖黄庭杨红旭曹昌文俸艳芸安京燕
Owner CHINA PETROLEUM & CHEM CORP
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