Method for treating low-concentration VOCs (Volatile Organic Compounds) and achieving deodorizing through electrocatalytic oxidation

An electro-catalytic oxidation, low-concentration technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., to achieve the effect of high-efficiency treatment

Inactive Publication Date: 2021-07-23
江门市绿一茵环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention belongs to the structure, and there are certain limitations to the specific inventive method used in practice

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method of electrocatalytic oxidation to control low concentration VOCS and deodorization,

[0033] S1: Add the electrolyte to the water to configure a certain concentration of ionic electrolyte;

[0034] S2: Spray out of the electrolyte of S1 in a certain direction;

[0035] S3: In reverse the VOCS gas into the special spray tower in reverse the VOCS gas, the VOCS gas is sufficiently in contact with the electrolyte, and the VOCs ejection direction is opposite to the sprayed ionic fluid, wherein the center of the ion is sprayed from the VOCS gas. The center is in a straight line, and the catalyst is added to the ionic electrolyte;

[0036] S4: In S3, the VOCS gas is passed into the mixed liquid trough in which the ionic liquid is in contact with the DC voltage, connect the positive and negative electrode, and control a certain current;

[0037] S5: The voltage is introduced in S4 to obtain a method of low concentration VOCs and deodorization of VOCS electrocatalytic oxidat...

Embodiment 2

[0047] The concentration of the imported VOCS gas is changed, the other content is exactly the same as 1 #, the embodiment is 2 #, wherein the specific VOCs concentration is shown in Table 2, the treatment method of the gas VOCS gas is added, and the concentration of the VOCs is controlled, and the gas in the invention is controlled. When the concentration is less than 300 ppm, after the electrocatalytic method, the exhaust gas concentration is greatly reduced, and the electrocatalytic effect of more than 90% is achieved, and the deodorizing effect is achieved, and direct discharge is achieved.

[0048] Table 2 Example 2 for different VOCS gas electrical catalysis experiments

[0049] Vocs source Leather factory Coating plant Electroplating factory Pharmaceutical factory Some types of vocs DMF, vinyl chloride, butanone, etc., benzene products, etc. Ethyl acetate, benzene, ethylene glycol butyl ether, ketone, etc. Organic exhaust, etc. DMF, benzene, organic ami...

Embodiment 3

[0051] A method of electrocatalytic oxidation to control low concentration VOCS and deodorization,

[0052] S1: Add the electrolyte to the water to configure a certain concentration of ionic electrolyte;

[0053] S2: Spray out of the electrolyte of S1 in a certain direction;

[0054]S3: In reverse the VOCS gas into the special spray tower in reverse the VOCS gas, the VOCS gas is sufficiently in contact with the electrolyte, and the VOCs ejection direction is opposite to the sprayed ionic fluid, wherein the center of the ion is sprayed from the VOCS gas. The center is in a straight line, and the catalyst is added to the ionic electrolyte;

[0055] S4: In S3, the VOCS gas is passed into the mixed liquid trough in which the ionic liquid is in contact with the DC voltage, connect the positive and negative electrode, and control a certain current;

[0056] S5: The voltage is introduced in S4 to obtain a method of low concentration VOCs and deodorization of VOCS electrocatalytic oxidati...

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PUM

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Abstract

The invention belongs to the field of waste gas VOCs treatment, and particularly relates to a method for treating low-concentration VOCs and achieving deodorizing through electrocatalytic oxidation, and the method specifically comprises the following steps: adding an electrolyte into water to prepare an ionic electrolyte with a certain concentration; conducting spraying in a mist form according to a certain direction; and enabling VOCs gas to reversely enter a special spray tower according to a certain flow rate, making the VOCs gas full contact with the electrolyte, keeping the spraying direction of the VOCs opposite to the direction of sprayed ionic liquid, and introducing direct current voltage into a mixed liquid tank where the VOCs gas is in contact with the ionic liquid. Therefore, the method for treating the low-concentration VOCs and deodorizing is obtained. According to the invention, by controlling the proportion of current to voltage, the intensity of an electric field is controlled, and the VOCs gas is electrically catalyzed; and the VOCs gas is effectively treated by controlling the contact time of the gas and the conductive liquid by adopting small-opening gas entering and large-opening gas flowing out.

Description

Technical field [0001] The present invention belongs to the field of exhaust gas VOCs, which specifically relates to a method of electrocatalytic oxidation to control low concentration VOCs and deodorization. [0002] technical background [0003] Volatile Organic (VOCs) not only affect people's health, but also has a direct relationship with the haze. At present, the state's attention to environmental protection is getting higher and higher, and the source penalty is increased, and the green water mountains are achieved. The control of VOCs is mainly: non-recovery (including catalytic oxidation, thermal breaking, etc.) and recovery (adsorption methods and absorption methods, etc.). [0004] Patent No. "CN 110237665 A" discloses an electrocatalytic oxidation VOC governance device, including a sprinkler mechanism, a pretreatment mechanism, and an electrolysis mechanism; the sprinkler mechanism includes a tower body, a venting opening, and a plurality of spray units, spray The iboti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/44B01D53/88B01D53/32B01D53/78
CPCB01D53/8687B01D53/88B01D53/32B01D53/78B01D2257/708
Inventor 王丽芬
Owner 江门市绿一茵环保科技有限公司
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