Generally refers to the use of thermal power generation, such as coal, oil, natural gas produced by the fuel combustion heat energy to heat water to make water into high temperature and high pressure steam, and then by the steam generator to produce electricity. Coal-fired power plants is given priority to with coal in our country. Thermal power with a relatively small investment, coal is cheaper, is suitable for the characteristics of the situation of our country at present stage. But thermal power can cause environmental pollution, the discharge of sulfur dioxide, nitrogen oxides, carbon dioxide and other pollutants into the atmosphere. Statistics show, had the greatest influence on the environment mainly by sulfur dioxide and nitrogen oxides, carbon emissions of sulfur dioxide, nitrogen oxides 1/3 land and severe acid rain pollution in our country. In 2003 by coal-fired power plant emissions of sulfur dioxide, nitrogen oxides more than 17 million t, the resulting loss of more than 1100 one hundred million yuan a year, severely restricted the national economic and social sustainable development, and affect people's health. YanZhiXiang
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