Comparative Study Of The Domestic And International Straw Generating Electricity

With fossil energy shorting and environmental pollution worsening, people start to look for new energy to replace conventional energy. Straw is a renewable energy, but as the people's living conditions improve, it brings serious environmental pollution as burn directly in the field. In order to solve the energy and environmental issues, Our government develop vigorously comprehensive utilization technology of straw, and Straw generating is a good direction. Promulgation and implementation of the "Renewable Energy Act"in2005. straw power industries get the historical opportunity of a development and they are protected in law. Straw power has been extended and applied in other countries for many years, while real industrial development has just started in our country. Many of the key issues must be resolved. By collecting a large amount of information and research. This paper summarizes and Comparatively analysis the facts that affect domestic and international straw power generation, the straw collective technical and policy evaluation system is constructed. Specific details are as follows:(1) straw gasification plants are typically smaller than 5MW, which often use internal-combustion engines and steam turbine; Straw direct-fired power plants are typically smaller than 30MW.Straw Boiler often are the medium-pressure boilers; A few are high-pressure boilers; cofiring straw power plants are typically greater than 100MW, Most adapted from conventional power plants.(2) The method of Straw direct collection is suitable for small-scale generation of straw power plants; the method of building straw collection point is suitable for large-scale power generation of straw power plant; The method of Straw uniform collection is suitable for a high degree of mechanization of agriculture in the areas of straw power plant; Open storage and Loose storage of straw are best not used.(3) Straw pure combustion power generation technology is suitable for modern farms or large waste treatment plants, scattered straw and higher transportation costs Department is not suitable; It is suitable for the Plains in china, which have sparsely populated, straw rich source; In China, straw gasification power generation technology has facts of low investment, low cost of power generation and good flexibility. Small straw gasification power generation technology suits to the power shortage, the spead rural and remote mountainous areas. Medium straw gasification power generation technology are suitable for lighting power consumption in the rural areas, farms, food or tree factories, being particularly applicable to the processing of agricultural and forestry residues processing plants, and food processing plants of its own power supply; Cofiring Straw power generation is adapted from the basis of the existing coal plants, which has advantages of low cost investment and high power generation efficiency, fit on plains which has the existing power plants and rich straw resource; (4)straw generating encouraging policies are relatively perfect in china. But subsidies for cofiring Straw power generation can not meet their; The serious pollution of the environment industry also do not levy the protection of the ecological tax; subsidies for Straw power generation is not enough.