Indirect heat exchange type gas turbine system and power generation method thereof

Abstract

The invention relates to an indirect heat exchange type gas turbine system and a power generation method thereof. The indirect heat exchange type gas turbine system comprises at least two heat storagedevices A and B, an air compressor and a turbine. Compressed air coming out of the air compressor passes through the heat storage device A and is heated by heat released by the heat storage device A,and the heated high-temperature air enters the turbine to do work to drive a generator to generate power, tail gas coming out of the turbine enters the heat storage device B, meanwhile, fuel is sprayed into the heat storage device B and is combusted with the tail gas to generate high-temperature exhaust gas, the high-temperature exhaust gas flows through and heats the heat storage device B, and the exhaust gas is finally exhausted; after heat release of the heat storage device A is finished, a valve is adjusted, so that the compressed air coming out of the air compressor enters the heat storage device B and is heated by heat released by the heat storage device B, and the high-temperature air enters the turbine to do work; the tail gas discharged from the turbine enters the heat storage device A, meanwhile, fuel is injected and is combusted with the tail gas to generate the high-temperature exhaust gas, the heat storage device A is heated, and the exhaust gas is finally discharged; andaccordingly the heat storage devices A and B continuously store and release heat, so that the system continuously and stably operates.

Description

technical field [0001] The invention relates to a gas turbine system, in particular to an indirect heat exchange type gas turbine system and a power generation method thereof. Background technique [0002] The current world energy supply system is mainly based on centralized energy supply. The system is characterized by large capacity, high parameters, high efficiency and so on. Although its centralized power generation efficiency is high, the distance of power transmission and heat transmission is long, the pipeline is long, the investment is large, and there are great defects in flexibility and safety. Compared with centralized energy systems, distributed energy systems are small and flexible, and can be combined with refrigeration and heating, etc., with high overall efficiency. Can complement each other, optimize the environment, and have good adaptability. For example, most cities in southern my country are cold in winter and hot in summer. Air conditioning is needed...

AI Technical Summary

Problems solved by technology

Due to the low calorific value of biomass gasification gas, and the purification process requires cooling treatment, the overall efficiency is low

In addition, biomass gas contains certain alkali metals and sulfides, which are very harmful to gas turbines.

At the same time, tar is easy to condense during cooling treatment, which has a great impact on pipeline equipment, and cannot work stably for a long time

In addition, the waste water after biomass gas purification will also cause secondary pollution

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