Distributed Air and Fuel Humidification Gas Turbine Combined Cycle Approach

A gas turbine and combined cycle technology, which is applied to gas turbine devices, mechanisms for generating mechanical power, and solar energy to generate mechanical power, can solve problems such as energy waste and difficult and efficient utilization, and achieve improved efficiency, reduced utilization costs, and improved power efficiency Effect

Inactive Publication Date: 2011-12-14
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the industrial process, there is a large amount of medium, low and low temperature heat that is difficult to use effi

Method used

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  • Distributed Air and Fuel Humidification Gas Turbine Combined Cycle Approach
  • Distributed Air and Fuel Humidification Gas Turbine Combined Cycle Approach
  • Distributed Air and Fuel Humidification Gas Turbine Combined Cycle Approach

Examples

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[0035] A thermal cycle scheme of the present invention that can be used in a distributed air and fuel humidification gas turbine combined cycle method is: starting from the beginning of the cycle working fluid compression process, 1) compression: the main circulating working fluid (air, helium, etc.) flow After the compressor is boosted, the end of the process is compressed air whose temperature and pressure are both higher than the ambient state; 2) The process at the high temperature side of the regenerator: the main circulating working fluid after the boost is in the regenerator (after cooler) and the low temperature The side gas exchanges heat in the surface heat exchanger to lower the temperature; 3) Air humidification: the main circulating working fluid enters the air humidification device, and is humidified and then led out from the humidification device; 4) Air preheating: the humid air enters the reheat The cold side of the heat exchanger (after cooler) exchanges heat w...

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Abstract

The invention discloses a gas turbine combined cycle method which can be used for distributed air and fuel humidification, and relates to gas turbine technology. An air humidification device is arranged between the gas turbine compressor outlet and a combustion chamber, and the compressed air is humidified by the humidification system and then The preheating enters the combustion chamber, and the heat source for air humidification is provided by the external medium and low temperature heat source; the fuel is also humidified and preheated by the humidifier before entering the combustion chamber. The gas turbine combined cycle method of the present invention can make full use of low-grade heat to improve the performance of the gas turbine combined cycle. Under the same conditions as the temperature before the turbine, the compressor pressure ratio and the component efficiency, the thermal efficiency index of the conventional gas turbine combined cycle can be improved by about 10%. %-15%, the output power index per unit air flow is increased by 20%-30%.

Description

technical field [0001] The invention relates to the technical field of gas turbines, in particular to a cycle method for gas turbines. Background technique [0002] In the industrial process, there is a large amount of medium-low and low-temperature heat that is difficult to use efficiently. This heat is either directly discharged or taken away by cooling water, resulting in a large amount of energy waste. Effective utilization of low-temperature waste heat from these industrial processes can save energy and reduce emissions. [0003] Gas turbines are a new generation of power devices utilizing clean energy, which can efficiently and cleanly convert natural gas, coal gas (such as integrated coal gasification combined cycle) or oil into electricity. In order to improve the efficiency of the gas turbine, on the one hand, the performance of the gas turbine itself can be improved, such as increasing the outlet temperature of the combustion chamber, increasing the pressure ratio...

Claims

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Application Information

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IPC IPC(8): F02C6/00F02C7/22F03G6/06
CPCY02E10/46
Inventor 王波张士杰肖云汉
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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