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Method for governing waste gas in 2-methyl-4-chlorophenoxyacetic acid workshop

A technology of dimethyltetrachloride workshop and treatment method, which is applied in the field of waste gas treatment of dimethyltetrachloride workshop, can solve the problems of short service life of carbon fiber adsorption and poor treatment effect, and achieve the effects of reducing pollution, saving resources and protecting the environment

Inactive Publication Date: 2018-12-07
ANHUI HUAXING CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical solution provided by the invention can make up to a certain extent the defects of poor treatment effect and short service life of carbon fiber adsorption in existing methods for treating workshop exhaust gas

Method used

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  • Method for governing waste gas in 2-methyl-4-chlorophenoxyacetic acid workshop
  • Method for governing waste gas in 2-methyl-4-chlorophenoxyacetic acid workshop
  • Method for governing waste gas in 2-methyl-4-chlorophenoxyacetic acid workshop

Examples

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Effect test

Embodiment 1

[0026] A method for controlling waste gas from a dimethyltetrachlorine workshop, characterized in that the treatment method comprises the following steps:

[0027] (1) Pass the waste gas to be treated into the alkali washing tower for alkali washing for 3 hours, and keep the pH in the tower to be 13 during this process;

[0028] (2) Pass the gas after alkali washing into the first-level water absorption tower, treat it for 8 hours, then pass through the mist eliminator to absorb excess water, and use the preprocessor to remove high boiling substances;

[0029] (3) Pressurize the gas processed in step (2), and then introduce it into the activated carbon adsorption box through the fan to complete the primary adsorption of the A adsorption box, the secondary adsorption of the B adsorption box, and the analysis and drying of the C adsorption box;

[0030] (4) Enter the condenser through the gas processed in step (3), fully condense into a liquid and enter the layered tank, the dic...

Embodiment 2

[0033] A method for controlling waste gas from a dimethyltetrachlorine workshop, characterized in that the treatment method comprises the following steps:

[0034] (1) Pass the exhaust gas to be treated into the alkali washing tower for alkali washing for 4 hours, and keep the pH in the tower to be 12 during this process;

[0035] (2) Pass the gas after alkali washing into the first-level water absorption tower, treat it for 7 hours, then pass through the mist eliminator to absorb excess water, and use the preprocessor to remove high boiling substances;

[0036] (3) Pressurize the gas processed in step (2), and then introduce it into the activated carbon adsorption box through the fan to complete the primary adsorption of the A adsorption box, the secondary adsorption of the B adsorption box, and the analysis and drying of the C adsorption box;

[0037] (4) Enter the condenser through the gas processed in step (3), fully condense into a liquid and enter the layered tank, the d...

Embodiment 3

[0040] A method for controlling waste gas from a dimethyltetrachlorine workshop, characterized in that the treatment method comprises the following steps:

[0041] (1) Pass the exhaust gas to be treated into the alkali washing tower for alkali washing for 3 hours, and keep the pH in the tower to be 11 during this process;

[0042] (2) Pass the gas after alkali washing into the first-level water absorption tower, treat it for 7 hours, then pass through the mist eliminator to absorb excess water, and use the preprocessor to remove high boiling substances;

[0043] (3) Pressurize the gas processed in step (2), and then introduce it into the activated carbon adsorption box through the fan to complete the primary adsorption of the A adsorption box, the secondary adsorption of the B adsorption box, and the analysis and drying of the C adsorption box;

[0044] (4) Enter the condenser through the gas processed in step (3), fully condense into a liquid and enter the layered tank, the d...

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Abstract

The invention relates to the technical field of governing of waste gas, in particular to a method for governing waste gas in a 2-methyl-4-chlorophenoxyacetic acid workshop. The treatment method comprises the following steps: 1) introducing waste gas required to be governed into an alkali washing tower and performing alkali washing, and keeping pH in the tower to be constant in the process; (2) introducing the gas subjected to alkali washing into a primary water absorption tower, processing for certain time, and subsequently absorbing the surplus moisture through a demister and removing high-boiling residues by using a pretreatment device; (3) pressurizing the gas treated in the step (2), and subsequently introducing the gas into an activated carbon adsorption box through a machine; (4) enabling the gas treated in the step (3) into a condenser, fully condensing the gas into liquid, and enabling the liquid to enter into a layering tank; layering dichloroethane and then enabling the dichloroethane to enter into a storage tank, and enabling waste water to enter into a waste water system; and (5) enabling the gas treated in the step (4) to enter into a photocatalytic device and performing photocatalytic oxidation to obtain a final product. According to the treatment method provided by the invention, the dichloroethane in the waste gas can be effectively purified and recycled, the pollution is reduced, the environment is protected, and the resources are reduced.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a method for treating waste gas from a dimethyltetrachloride workshop. Background technique [0002] Pesticide production belongs to the category of fine chemicals. The production process is complex, with many reaction steps and large consumption of raw materials. Therefore, a large amount of "three wastes" are generated in the production process. Among them, the waste gas produced in the process of pesticide production is often accompanied by stench, which pollutes the surrounding air environment. In recent years, due to the increasing number of disputes and appeals caused by the emission of waste gas from pesticide factories and other chemical factories, the factories were forced to stop production, causing serious economic losses and social adverse effects. Therefore, the efficient treatment of waste gas is one of the important tasks of pesticide production enterp...

Claims

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Application Information

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IPC IPC(8): B01D53/75B01D53/40B01D53/02
CPCB01D53/02B01D53/40B01D53/75B01D2253/102B01D2258/02B01D2259/804
Inventor 金奎李霞赵龙凯尹仕兵汪志稳王玉贵
Owner ANHUI HUAXING CHEM IND CO LTD
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