A few days ago, the China Electricity Council (hereinafter referred to as CEC) completed the statistical work on the 2011 information on thermal power plant flue gas desulfurization, denitrification and thermal power plant flue gas decontamination. Among them, the first place is Beijing Guodian Longyuan Environmental Protection Engineering Co., Ltd. with an operating capacity of 14030MW. Followed by China Power Investment Yuanda Environmental Protection Engineering Co., Ltd. and China Huadian Engineering (Group) Co., Ltd., ranked second and third. Among them, the off-line method used by them is limestone-gypsum wet method. It will also lay the foundation for the control of the emission of CO2 in the future in the increasingly deteriorating atmospheric environment.

China has conducted a variety of research and application of off-technology. All thermal power plants are put into the flue gas off-gassing system, and the emission of oxides is controlled by the flue gas removal technology. The prevention and control of CO2 dioxide in thermal power companies has become a top priority for environmental protection agencies. While the environmental protection agencies are actively fighting for the support of these enterprises in the construction of funds for de-nitrification and denitrification equipment, they also actively invite domestic and foreign and national experts from the technology center to provide technical support for the national thermal power companies to remove off-gassing and denitrification, and dismantle power plants as an important task. To complete, limestone removal* is currently the main process for the removal of flue gas in China's power plants. Limestone used as a limestone (lime)-gypsum wet scrubbing process absorbent is widely distributed in China and has abundant resources. Limestone grades are also very high in many regions. Well, the calcium carbonate content is above 90%. Excellent people can reach more than 95%. Among the various absorbents used in the process, limestone is cheap, and after crushing and grinding with Raymond, calcium utilization is high, and there are many manufacturers who can provide finished limestone powder. The use of calcium carbide slag as an absorbent can be abolished.

Limestone (lime) - gypsum wet process * removal rate of up to 95%, after the removal of the flue gas not only the concentration of low-oxidation * is very low, and the dust content of flue gas is also greatly reduced, large units using wet method * Process, the large amount of dioxide removal, is conducive to the actual total control of the area and power plant. The use of off-line technology can effectively solve environmental problems. Most power plants use Raymond Mills for limestone fines processing to improve the efficiency of de-escaping. According to the requirements of the State Environmental Protection Administration, thermal power companies must build supporting de-NOx devices. However, there are very big problems in the off-line devices that have been built. Because the vicious competition in the market leads to low equipment quality, the commissioning rate of the off-line devices is less than 60%, and huge investments do not bring atmospheric pollutants. decline. The major power plants are also paying more and more attention to the disassembly system. In the dismantling system, it is necessary to increase the use of Raymond Mill to process limestone powder and prepare active limestone slurry.