A device for eliminating PM2.5 particulate matter in automobile exhaust and its application method

Abstract

The invention discloses a device for eliminating PM2.5 particulate matter in automobile tail gas and a method for using the device, which comprises a pipe body, a high-voltage pack, a liquid storage tank, a micro booster pump and an electrostatic injection device. The pipe body is equipped with an air inlet and an air outlet. The air inlet can be connected with the exhaust pipe of the automobile. The diameter of the air inlet is smaller than the inner diameter of the pipe body; There is also a folded filter membrane and ash hopper. The present invention can be powered by a car battery, the voltage is raised to 5-12KV through a high-voltage pack, and then the chitosan aqueous solution is sprayed into charged chitosan and other polymer nanofibers / particles through an electrostatic spraying device by using an electric field force, thereby realizing The adsorption of harmful substances such as PM2.5 particulate matter and a small amount of heavy metal elements in automobile exhaust can achieve the purpose of purifying automobile exhaust.

Description

technical field [0001] The invention relates to an automobile tail gas purification device, in particular to a device for eliminating PM2.5 particles in the automobile tail gas. Background technique [0002] In recent years, the problem of regional air pollution in my country has become increasingly serious, and the haze weather characterized by PM10 and PM2.5 particulate matter has become increasingly prominent, seriously affecting people's health and ecological security. In order to control smog pollution in a targeted manner, in early 2014 the Ministry of Environmental Protection issued the "Notice on Carrying out the First Stage Research on Source Analysis of Atmospheric Particulate Matter" (Huanban﹝2014﹞No. 7). The source analysis results of PM2.5 particles released by major cities show that automobile exhaust is one of the main sources of particulate matter, and with the increase in the number of automobiles, the proportion of automobile exhaust in the source of partic...

AI Technical Summary

Problems solved by technology

Since the device uses a traditional filter membrane, the capture and filtration effect is poor for PM2.5 particles with small diameters

Chinese patents (application numbers: 201310137162.5 and 201310137165.9) propose a device for water atomization to remove particulate matter in automobile exhaust, using MRM membrane (molecular resonance membrane) to generate negative ions in water, water mist containing negative ions and gas in automobile exhaust , particulate matter and other reactions, so as to achieve the purpose of purifying exhaust gas, but this kind of device is large in size, low in purification efficiency and easy to cause secondary pollution

Chinese patent (Application No.: 201210039806.2) proposes a treatment device and method for electrostatic spraying to remove particulate matter in automobile exhaust, which utilizes charged water mist to absorb particulate matter to coagulate and settle, but the device requires two external high-voltage power supplies, and the device is relatively small Larger and heavier, the cost is higher, and the particle collection method is too simple, which will easily cause the particles to be discharged into the air with the exhaust gas and reduce the filtering effect

Images