Country Report: China Electron beam application in gas waste treatment in China

摘要

In the most recent decade, Electron beam waste treatment technology attracted serious attention from environment policymaker and industrial leaders in power industry in china. Start in middle of 1980's, Chinese research institute began experiment on Electron beam treatment on flue gas. By the end of 2000, two 10,000 cubic meters per hour small scale Electron beam gas purifying station were established in Sichuang province and Beijing. Several Electron beam gas purifying demonstration projects are under construction. With robust economy and strong energy demand, Needless to say, in near future, Electron beam gas purifying technology will have a bright prospect in china. Historically Chinese power industry relied heavily upon raw-coal, it remains true today thought a lot of other power systems like nuclear power plant and hydro-power plant were build during past few decades. Every year millions tons of toxic exhaust were given away into air by hundreds power plants in china, the majority of which are SO_2, that is the result of burning raw-coal. In china average coal used in power plant has about 1.2% sulfur. In year 2000, 80% of total 1.4 billion tons of raw-coal were burned, that is about 13 million tons sulfur were burned along with carbon in coal, produced about 26 million tons hazardous SO_2, of which about 37.3% was contributed by power plants. Massive SO_2 exhaust has caused serious environmental disasters. Today china is the third severe acid rain region after Europe and northern America, and SO_2 is the major cause in the coastal china. The SO_2 pollution has became one of the major issues in Chinese environment protection plan, as the consumption of raw-coal is increasing year by year backed by more and more power demand. Steel works are major SO_2 producers too in china, and coal-burn heating center is another major cause of SO_2 pollution in northern china in winter.