1 概述 我国焊割用燃气中乙炔占90％。乙炔是以电石为原料产生的,而电石的生产过程要消耗大量的电能和焦炭,是一种高耗电的产品。同时,乙炔是重要的化工原料之一,把乙炔用作焊割用燃气,无论从资源综合利用来看,还是从节约能源的角度来看,都是不合理的。 乙炔气的生产过程中还伴随废渣污染。工业乙炔气中含有H_2S和PH_3等对人体有害的气体,不利于焊割工人的身体健康。 1 Overview Acetylene in China’s Hange gas 90%. Acetylene is generated from calcium carbide as raw material, and calcium carbide production process to consume a large amount of electricity and coke, is a high-power products. At the same time, acetylene is one of the important chemical raw materials. The use of acetylene as a gas for welding and cutting, irrespective of the comprehensive utilization of resources or from the point of energy conservation, is unreasonable. Acetylene gas production process is also accompanied by waste residue pollution. Industrial acetylene gas containing H_2S and PH_3 and other harmful gases, is not conducive to the health of workers Hange.