Solar mixed steam injection Brayton circulating system capable of efficiently recovering water and waste heat

Abstract

The invention discloses a solar mixed steam injection Brayton circulating system capable of efficiently recovering water and waste heat. The solar mixed steam injection Brayton circulating system comprises a waste heat / water recovery subsystem, a humid air Brayton circulating subsystem and a solar heat collector subsystem, the waste heat / water recovery subsystem comprises a two-stage absorption refrigeration circulating device and a water treatment device; the humid air Brayton circulating subsystem comprises a gas turbine and a steam generator; air is mixed with steam generated by the steam generator to enter a solar heat collector subsystem to be heated after being subjected to heat regeneration through the heat regenerator, high-temperature gas generated through a combustion chamber enters a turbine to act, and waste gas obtained after acting enters a high-pressure generator and a low-pressure generator after passing through the heat regenerator and the steam generator and drives atwo-stage absorption refrigeration circulating to be refrigerated; after gradient utilization of energy, the temperature of flue gas is reduced to be lower than a dew point temperature, and water in the flue gas is pressurized and conveyed to the steam generator to generate required steam after being recovered by the water treatment device. By effectively coupling the three subsystems, the outputof Brayton circulating power and the effective recovery of waste heat and water are greatly improved.

Description

technical field [0001] The invention relates to the fields of gas turbines, solar energy and refrigeration, in particular to a solar energy mixed steam injection Brayton cycle system capable of efficiently recovering water and waste heat. Background technique [0002] Solar energy is an abundant renewable clean energy, and using solar heat to drive the Brayton cycle is an important way of solar thermal power generation technology. Solar Brayton thermal power generation has superior thermal performance. Its purpose is to develop a hybrid power generation system that directly heats compressed air with solar energy to perform work outward. The solar-driven Brayton cycle power generation system is light in weight, high in reliability, and simple in structure. , The advantage of being able to start and stop quickly has become a key research direction in the field of solar energy. However, the current solar power generation efficiency and conversion efficiency are low, and when th...

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Problems solved by technology

[0005] The invention proposes a solar hybrid steam injection Brayton cycle system that can efficiently recover water and waste heat, solves the problem of steam reinjection gas turbine water recovery and heat recovery, improves the efficiency of solar thermal power generation, and realizes multi-level energy at the same time use

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