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Novel electrolysis technology and system for VOCs

A technology, a new technology, applied in the application field of atmospheric treatment technology, can solve the problems of low treatment efficiency, achieve high treatment efficiency, reduce costs, and improve the removal rate

Pending Publication Date: 2020-12-01
江门市依潺环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The processing efficiency is extremely low, and even some processing effects have no obvious difference before and after installation, which becomes a display

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  • Novel electrolysis technology and system for VOCs

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Embodiment 1

[0026] A titanium-based lead dioxide anode is used, and a three-dimensional graphene gas diffusion electrode is used as a cathode. Using 0.05M Na 2 SO 4 As the absorption liquid, the concentration of chlorobenzene is 200ppm, and the air volume is 3000m 3 / h, working current density is 20mA / cm 2 , and when the voltage is 12v, the VOCs oxidation absorption rate is 96%.

Embodiment 2

[0028] Platinum-based lead dioxide electrode is used, carbon nanotube electrode is used as cathode, 0.1M propylene carbonate is used as absorption liquid, and the continuous air volume is 12000m 3 / h of VOCs-containing gas, CH 3 OH (formaldehyde) 100ppm, C 2 h 5 OH (ethanol) 100ppm, C 6 h 2 CH 3 (NO 2 ) 3 (Trinitrotoluene) 200ppm and other mixed gases 200ppm, the working current density is 100mA / cm 2 , and when the voltage is 50v, the VOCs oxidation absorption rate is 98%.

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Abstract

The invention relates to the field of atmospheric treatment, in particular to a novel electrolysis technology for VOCs. The technology comprises the following three technological processes: an absorption process of the VOCs: continuously introducing VOCs gas, and enabling the VOCs to enter a gathering box to be absorbed by absorption liquid; secondly, an electrolysis process of the VOCs, wherein the gas enters an electrolytic tank of an electrolytic tower through a pipeline, a large number of hydroxyl free radicals with strong oxidizing properties can be generated through an electrolytic reaction of an anode and a cathode under the action of a certain catalyst, the VOCs in a solution can be oxidized into soluble intermediate substances, carbon dioxide, water and other small molecular products by the hydroxyl free radicals, and in addition, a large amount of nanometer foam exists between the cathode and the anode so as to slow down the flowing speed of VOCs in the solution and enhance the electrolysis efficiency of gas; and a circulation process of the absorption liquid: enabling the electrolyzed absorption liquid to pass through a filter plate and a filter screen of the electrolysis tower, and then return to a VOCs gathering box again under the action of a one-way circulating pump for recycling. Thus, the cost of replacing the solution multiple times is reduced.

Description

technical field [0001] The invention belongs to the application field of atmospheric treatment technology, and in particular relates to a novel electrolysis VOCs technology and system. Background technique [0002] Volatile organic compounds (VOCs, volatile organic compounds) have many definitions. According to the definition of the World Health Organization (WHO), VOCs are various organic compounds with a boiling point of 50°C to 260°C at room temperature. It is usually divided into non-methane hydrocarbons, oxygen-containing organic compounds, halogenated hydrocarbons, nitrogen-containing organic compounds, and sulfur-containing organic compounds. VOCs play an important role in air pollution. Most VOCs are toxic and will directly endanger human health, cause adverse effects on the human body, damage internal organs and nervous system, and cause acute poisoning or even cancer in severe cases. Therefore, the state's supervision on waste gas has increased, and the emission s...

Claims

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Application Information

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IPC IPC(8): B01D53/18B01D53/32B01D53/75
CPCB01D53/1487B01D53/18B01D53/326B01D53/75B01D2257/708Y02A50/20
Inventor 黄福帅杜江勇
Owner 江门市依潺环保科技有限公司
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