Environmental temperature conditioning based pollutant emission optimizing adjusting method of gas turbine

Abstract

The invention relates to an environmental temperature conditioning based pollutant emission optimizing adjusting method of a gas turbine, and belongs to the field of combustion control of gas turbines. The method is characterized in that a data acquiring system and a pollutant emission optimizing control device are arranged, wherein the data acquiring system is used for acquiring environmental parameters (temperature, humidity and atmosphere), natural gas feeding parameters (temperature, pressure and flow rate) and gas turbine combustion state data (pressure pulse and pollutant emission) and other parameters. When the environment temperature varies, and accordingly the unit pollutant emission concentration fluctuates, the pollutant emission optimizing control device is capable of analyzingbased on the acquired real-time data and the system boundary value to obtain the relation between the gas turbine pollutant (NOx and CO) emission and the natural gas feeding flow rate, finding out the optimal distribution ratio of the natural gas feeding flow rate of each nozzle, and setting the combustion system running parameters based on the optimal distribution ratio. Therefore, the gas turbine pollutant emission concentration is optimized while the safe and stable running of an unit is ensured; and the pollution of the gas turbine in running to the environment is reduced.

Description

technical field [0001] The invention relates to an optimization adjustment method for gas turbine pollutant discharge based on ambient temperature adjustment, which belongs to the field of gas turbine combustion control. Background technique [0002] In recent years, relying on the advantages of high thermal efficiency and clean combustion of the gas-steam combined cycle, large-scale gas turbines have gradually formed a sudden emergence in my country's power generation industry. The commissioning of the "West-to-East Gas Transmission" project and the implementation of the southeast coast LNG project have created favorable external conditions for the development of large gas turbine gas-steam combined cycle, and more and more gas-steam combined cycle units are in operation on the power grid Undertake the maneuvering task of peak load. However, the peak shaving capacity of the unit is greatly affected by the changing ambient temperature of the seasons. When the temperature is...

AI Technical Summary

Problems solved by technology

The application of these technologies effectively solves the combustion instability of premixed combustion and greatly reduces the NOx of gas turbines. x emissions, but the stable combustion window of premixed combustion is relatively narrow. In the case of large changes in atmospheric temperature and natural gas composition, the combustion conditions of the gas turbine will deviate from the design point. At this time, the pollutant emission and combustion of the gas turbine are stable. Sex and other indicators will appear abnormal

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