Underground operation environment purification is to install purifiers at specific locations in the roadway to purify the polluted air and reduce the inhalation of waste gas by people and machines. The use of underground loaders and pollution source points are constantly moving in the process of loading, transportation and unloading, and waste gas is filled in the whole operation area. Main pollutants of diesel exhaust: black smoke particulate matter PM, carbon monoxide CO, nitrogen oxide NOx, hydrocarbon HC, lead Pb, sulfide, etc.

污风串连的有用途径之一，就是在铲运设备作业沿线设置多道净化。柴油发动机排放微粒从电阻率的角度考虑适于用静电捕集。电除尘技术作为有用的工业收尘手段已经被引入一些大规模隧道空气净化，一些静电除尘装置已在公路隧道空气污染治理中得到了应用。

One of the effective ways to solve the problem of pollution and wind cascade is to set up multiple purification channels along the operation line of shoveling equipment. Diesel engine emission particles are suitable for electrostatic capture from the perspective of resistivity. As a useful industrial dust collection method, electrostatic precipitator technology has been introduced into some large-scale tunnel air purification, and some electrostatic precipitator devices have been applied in the air pollution control of highway tunnels.

通常地下柴油设备尾气净化的方法有以下几种机内净化：

Generally, the exhaust gas purification methods of underground diesel equipment include the following internal purification methods:

1、选用低排放标准的柴油发动机；机外净化、采用各种后处理措施、在尾气管加装各种净化；

1. Select diesel engine with low emission standard; External purification, various post-treatment measures, and various purification devices are installed in the tail gas pipe;

2、加强矿井通风，用新鲜风流将井下高浓度的有毒有害气体加以稀释，经回风巷道排出；

2. Strengthen mine ventilation, dilute the high concentration toxic and harmful gas underground with fresh air flow and discharge it through the return air roadway;

3、采用含硫低的柴油，提高燃油质量；

3. Adopt diesel oil with low sulfur content to improve fuel quality;

4、井下空气净化，给井下柴油工程机械加装尾气净化器，阻挡黑烟尾气的排出，使工作人员远离尾气的污染。

4. Underground air purification: install tail gas purifier for underground diesel engineering machinery to block the discharge of black smoke tail gas and keep the staff away from the pollution of tail gas.

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