Application of Evaporative Cooling for the Condensation of Water Vapors from a Flue Gas Waste Heat Boilers CCP

Abstract

Abstract. The object of the study are boilers that burn organic fuel and the recovery boilers (RB) of the combined cycle plant (CCP), which are also working on the products of the combustion of hydrocarbon fuels. The purpose of research is to find technologies that increase efficiency of the thermal power plant (TPP) and technologies that reduce the environmental impact on the environment by burning fossil fuels. The paper deals with the technology of the boilers burning hydrocarbon fuel with condensation of water vapor from the exhaust flue gases. Considered the problems caused by using of this technology. Research shows that the main problem of this technology in the boilers is the lack of reliable methods of calculation of heat exchangers, condensers. Particular attention is paid to the application of this technology in the recovery boilers combined-cycle plants, which are currently gaining increasing use in the generation of electricity from the combustion of gas in power plants. It is shown that the application of technology of condensation of water vapor in RB CCP, the temperature decreases of exhaust gases from 100 to 40 qС, allows increasing the efficiency of the RB with 86.2 % to 99.5 %, i.e. at 12.3 %, and increase the efficiency of the CCP at 2.8 %.

Efficiency of steam reheating in heat recovery steam generator at thermal power plant with gas turbine topping

“…At the same time, indices of TPPs thermal efficiency after modernization are mainly determined by adopted technical solutions [1][2][3][4].…”

Research of composite fuels thermophysical properties based on low-grade coals with addition of fine sawdust and flour industry wastes

“…Significant expenditures of funds for its supply to remote regions of the Russian Federation lead to an increase in final cost of energy resources in two or more times, depending on territorial location [5][6][7][8]. In this case, the use of local resources in the form of solid composite fuel made of low-grade coals with addition of waste from timber industry and impurities of flour waste as binder is promising for the near future.…”

“…In this case, the use of local resources in the form of solid composite fuel made of low-grade coals with addition of waste from timber industry and impurities of flour waste as binder is promising for the near future. Studies in these areas are actively conducted; their results are published in papers [1][2][3][4][5][6][7][8]. But results of [1][2][3][4][5][6][7][8] are not the basis for analyzing dependencies of composite fuels thermophysical properties based on low-grade coals with addition of fine sawdust and flour industry wastes.…”

“…Studies in these areas are actively conducted; their results are published in papers [1][2][3][4][5][6][7][8]. But results of [1][2][3][4][5][6][7][8] are not the basis for analyzing dependencies of composite fuels thermophysical properties based on low-grade coals with addition of fine sawdust and flour industry wastes. Analysis of composite fuels formation with operational and energy characteristics close to homogeneous coal, but with high environmental parameters is relevant.…”

Flue gas moisture capacity calculation at the outlet of the condensation heat recovery unit

“…The ways to increase gas turbine unit's efficiency are an application of the condensation heat recovery unit (CHE) [1][2][3][4][5]. The condensation heat recovery unit is applied in regions with low air temperature, where air can be used to cool flue gas more efficiency [6].…”