A solar hybrid steam injection Brayton cycle system that can efficiently recover water and waste heat

Abstract

The invention discloses a solar hybrid steam injection Brayton cycle system capable of efficiently recovering water and waste heat, which includes a waste heat / water recovery subsystem, a humid air Brayton cycle subsystem and a solar heat collector subsystem; the waste heat / water recovery subsystem The system includes a two-stage absorption refrigeration cycle device and a water treatment device; the humid air Brayton cycle subsystem includes a gas turbine and a steam generator; after the air is reheated by the regenerator, it is mixed with the steam generated by the steam generator and enters the solar collector The system heats up, and the high-temperature gas generated by the combustion chamber enters the turbine to do work. After the work, the exhaust gas passes through the regenerator and the steam generator, and then enters the high-pressure generator and low-pressure generator to drive a two-stage absorption refrigeration cycle for refrigeration; After cascade utilization, the temperature of the flue gas drops below the dew point temperature, and the water in the flue gas is recovered by the water treatment device, and then pressurized and sent to the steam generator to generate the required steam. The invention greatly improves the output of Brayton cycle power and the effective recovery of waste heat and water by effectively coupling the three subsystems.

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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