Multi-stage efficient enzironment-protection turbine gas-fuel staged burning method and system

Abstract

The invention discloses a gas fuel classifying burning method and the device of the multilevel highly active combustion turbine which divides the gas fuel burning into many grades. All of the high pressure fuel gas is transformed into the first burning room and passed the every next combustion turbines and the burning room. The oxidant is transformed into all the burning room before last grade. The oxidant reacts with the part fuel to emit the thermal to keep the temperature under some special temperature; in the last burning room, the oxidant burns with the fuel fully and then it is transformed into the last combustion turbine to do power. So it has the high generating efficiency and good environment protecting, especially for the multiple production system based on the coal gas, the gas steam compound circle system and the using system of the natural gas, the coke-oven gas, the blast furnace gas, the converter gas and the coal layer gas.

Description

technical field [0001] The content of the present invention belongs to the field of power equipment, and relates to a gas turbine power generation device including gas fuel combustion, especially a device for improving the efficiency of heavy-duty gas turbine power generation and reducing the emission of pollutants from heavy-duty gas turbine power generation. Specifically, the present invention relates to such a multi-stage high-efficiency environment-friendly gas turbine gas fuel staged combustion method and system, in this gas turbine cycle system, the oxidant (air, oxygen-enriched air or oxygen) is sent into the combustion chambers of each stage in stages , the fuel gas is oxidized or burned step by step, and enters the gas turbines at each stage to do work. From the first stage to the last stage, the combustible gas concentration and pressure decrease step by step. Background technique [0002] A gas turbine installation in its simplest form consists of a compressor, a...

AI Technical Summary

Problems solved by technology

[0009] The shortcomings of the above-mentioned gas turbine cycle and the existing reheat cycle are: the fuel (or fuel and oxidant together) is injected into the reheat combustion chamber and completely combusted under constant pressure; It is carried out under the oxidizing atmosphere of oxygen, so it is necessary to reduce the combustion temperature to reduce NOx emissions

Moreover, due to the reduction of the combustion temperature, the improvement of the efficiency of the entire gas turbine device is bound to be limited.

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