2, waste incineration power generation and thermal power generation compared to nuclear power, low profits, small scale, resulting in harm
Large.
3, waste incineration has become one of the main treatment of municipal waste, with the recovery of heat energy and the most complete reduction of the characteristics of the incineration of waste, the volume can be reduced than the original 85% to 95%. However, the direct combustion of garbage is unstable due to low heat utilization, and the secondary pollution formed in the combustion process is serious. Countries around the world are developing Refuse Derived Fuel (RDF) technology. Refuse Derived Fuel (RDF) technology is characterized by high calorific value, stable combustion, easy transportation, easy storage, low secondary pollution and low emission of dioxin-like substances, etc. It is widely used in the fields of drying engineering, cement manufacturing, heating engineering and power generation engineering.
RDF technology has been applied in foreign countries for many years, at present, Europe and the United States and other countries are mainly in favor of the development of RDF-2 and RDF-3, there have been RDF-5 commodities in Europe, while Japan is focusing on the application of RDF-5. Developed countries pay attention to the RDF technology, so that its application range is expanding, and is now mainly used in the following areas:
(1) small and medium-sized public **** occasions. Mainly refers to heated swimming pools, gymnasiums, hospitals, public **** baths, welfare homes for the elderly, melting snow and other aspects.
(2)Drying works. RDF is burned in a special boiler and utilized as a heat source in drying and thermal deodorization.
(3) Cement manufacturing. In Japan, the combustion ash of RDF is utilized as a raw material in cement manufacturing, thereby eliminating the process of combustion ash treatment for RDF and reducing operating costs. This technology has already achieved industrialized application.
(4) District heating project. In the heating engineering infrastructure is relatively complete in the region, only the construction of a special RDF combustion boiler can realize RDF heating, less investment.
(5) Power generation project. In the thermal power plant will be RDF and coal mixing for power generation, very economical. In the special RDF combustion boiler for small-scale combustion of power generation, has also been rapid development. The Japanese government has been studying RDF combustion power generation programs since 1993 and has invested in the construction of RDF combustion power plants.
(6) Application as carbide. RDF will be pyrolysis carbonization under air isolation, the resulting combustible gas combustion, as a heat source for drying works, pyrolysis residue that is carbide, can be used as a reducing agent in the ironmaking blast furnace instead of coke.
2 China's current situation of RDF
In China's RDF research started late, in 1996, the Chinese Academy of Sciences, Guangzhou Energy Research Institute of Solid Waste Energy Laboratory and the Shanxi Key Laboratory of Coal Science and Technology, Taiyuan University of Science and Technology, took the lead in a series of waste-derived fuel molding, pyrolysis, gasification, pollutant control and other aspects of the study, and joint training of the PhD students in the field of RDF technology. It was also reported that in 2001, the Institute of Engineering Thermophysics of the Chinese Academy of Sciences (IETP) and Harima Heavy Industries of Ishikawajima, Japan, engaged in technical cooperation in the field of environmental energy, and accepted a set of RDF production equipment worth 60 million yen from the other party, which was installed in Yanqing County, Beijing. According to the Institute's experimental research on the first domestic RDF production line with a daily output of 6 tons, it is shown that it is feasible to carry out the RDF process with Chinese garbage, which is a high-quality fuel with a calorific value comparable to that of anthracite coal, and can be used as an alternative fuel. The current cost of preparing RDF is high, with the increase of production scale, the cost will be reduced significantly, and the environmental benefits of preparing RDF for incineration are very attractive. Although our country around the RDF technology are very interested in, Shanghai Shen Gong Environmental Protection Co., Ltd. developed and implemented the engineering application of "comprehensive treatment of municipal waste technology" in the renewable fuel RDF production line configuration, but mainly in the experimental and wait-and-see stage, from the large-scale industrialized production there is still a considerable distance. In the production of RDF, the most important thing is that the production line of RDF is not a large-scale industrialization. In the production of RDF, the most important thing is the city's living garbage and preparation process, what composition of the garbage, decide to use what kind of preparation process.
4, waste power generation in the long run is a promising industry, there will always be a profitable day, to determine the profitability of the enterprise is the government's waste disposal subsidies, as long as the subsidies are in place, waste power generation enterprises can generally achieve profitability. To put it bluntly, whether or not you can get government subsidies.
5, waste incineration in the pollutants is difficult to control, of course, does not deny that can be reasonably controlled, it is recommended that should be away from residential areas, so that pollutants can be digested in the environment, why should we do to move the people's anger?
6. The main policy is to implement EU standards for pollutant emissions. All the electricity generated is purchased online,
The subsidies given are different for each location and can also be used to reduce taxes and so on.