Solar-assisted reheat overheating thermal power generation system and emission reduction dilatation method

Abstract

The invention discloses a solar-assisted reheat overheating thermal power generation system and an emission reduction dilatation method. The solar-assisted reheat overheating thermal power generation system comprises a boiler, a flue gas overheater, a solar overheater, a solar reheater, a flue gas reheater, a turbine, an electric generator, condensers and a circulating pump. The boiler, the flue gas overheater, the solar overheater, the turbine, the condenser, the other condenser and the boiler are connected in sequence to form a loop. A turbine low-pressure cylinder inlet, the solar reheater, the flue gas reheater and a turbine high-pressure outlet are connected in sequence to form a loop. The turbine is connected with the electric generator. According to the solar-assisted reheat overheating thermal power generation system and the emission reduction dilatation method, solar heat storage heat exchangers serve as the reheaters and the overheaters, the overheating surfaces and the reheating surfaces of an existing thermal power generation system are increased, partial functional replacement of coal by solar energy is achieved, the purposes of emission reduction and dilatation are achieved, and the purposes that the solar energy is economically utilized and emission by existing power stations is lowered are achieved.

Description

technical field [0001] The invention relates to a thermal power generation system and solar energy technology, in particular to a solar assisted reheating superheating thermal power generation system and a method for reducing emission and expanding capacity. Background technique [0002] my country's boilers are mainly coal-fired. Among them, coal-fired power station boilers have developed rapidly in the direction of large capacity and high parameters in recent years. Both production and operation management have approached the advanced level of foreign countries; while coal-fired industrial boilers have a large number of reserves and are widely distributed. , High energy consumption, heavy pollution, the overall level of energy efficiency and pollution control is far behind that of foreign countries, and the potential for energy saving and emission reduction is huge. By the end of 2012, there were 467,000 coal-fired industrial boilers in use in my country, with a total capac...

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Problems solved by technology

At the same time, the elimination of existing small power plants also faces a major asset loss problem. How to use the system equipment of existing coal-fired power plants and combine solar energy technology to achieve pollutant discharge standards for existing units and at the same time improve the economics of solar energy utilization sex, is of great significance

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