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

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...