Combined cycle waste heat utilization system that can stabilize high/low intake air temperature of the compressor

Abstract

The invention discloses a combined cycle waste heat utilization system capable of stabilizing the high / low inlet air temperature of a compressor. The combined cycle waste water heat utilization system comprises a smoke-hot water heat exchanger, an air-water heat exchanger, an expansion water tank, a pipeline pump, a low-temperature heat source hot water type lithium bromide refrigerator and a valve. A heat source used by the low-temperature heat source hot water type lithium bromide refrigerator and a heat source used by the air-water heat exchanger are waste heat of smoke at the tail portion of a waste heat boiler. In the low-temperature weather, the system can heat the inlet air of the compressor to prevent water drops in the air from being frozen, and the running safety and the heat economical efficiency of a unit are improved; in the high-temperature weather, the system can cool the inlet air of the compressor to improve the peak shaving capability and the heat economical efficiency of the unit; and waste heat of the discharged smoke of the waste heat boiler is used as the heat source of the system, the function of stabilizing the temperature of the inlet air of the compressor is achieved, switching of a compressor inlet air heating function and a compressor inlet air cooling function can be achieved through opening and closing of the valve, and double benefits of improving the safety and the economical efficiency of the unit are achieved.

Description

Technical field: [0001] The invention relates to a combined cycle waste heat utilization system capable of suppressing the high / low intake air temperature of a compressor. The system uses waste heat from exhaust heat of a waste heat boiler as a heat source and integrates two functions of intake cooling and intake heating, and can be used in high temperature seasons. The method effectively reduces the temperature of the air entering the gas turbine, effectively increases the intake temperature of the gas turbine in low temperature seasons, and has the dual benefits of improving the safety and economy of the unit; the invention belongs to the technical field of energy utilization. Background technique: [0002] The gas turbine is a high-speed rotating power machine, and the operation safety and thermal performance (output, thermal efficiency) of the gas turbine combined cycle unit are closely related to the atmospheric temperature. [0003] The air entering the compressor from...

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Problems solved by technology

[0008] At present, there is no waste heat utilization system of combined cycle unit with reasonable system design, which can stabilize the high / low intake air temperature of the compressor and improve the performance

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