Gas turbine preevaporation combustion-chamber for combusting ethanol fuel

Abstract

The invention discloses a pre-evaporation combustion chamber of a gas turbine burning ethanol fuel. The pre-evaporation combustion chamber of the gas turbine burning ethanol fuel adopts a single tubecylinder combustion chamber structure which is formed by a combustion chamber cartridge receiver and a flame tube; an inlet of the combustion chamber is used for introducing air current, and is weldedwith the combustion chamber cartridge receiver; an ethanol supply path adopts a direct injecting hole as an ethanol nozzle, liquid ethanol is supplied to a pre-evaporation tube; atomization, evaporation and doping of the ethanol can be completed by using temperature and aerodynamic force of the current in the pre-evaporation tube; air is aerated into the tube from a primary injection hole and a secondary rotational flow hole, the primary injection hole can be divided into two proposals of a radial direction and an axial direction, the rotational flow is not generated by primary jet current, and the rotational flow is completely generated by the current which is aerated from the secondary rotational flow hole; the liquid ethanol is evaporated and is mixed with the air through the functionsof the primary jet current and the secondary rotational flow; the mixed combustible gas is aerated to the flame tube from the pre-evaporation tube; and the combustion of the ethanol is completed in the flame tube by an electric spark lighter; and the pre-evaporation combustion chamber can sufficiently exert characteristic of the ethanol fuel by using the pre-evaporation tube, thereby improving efficiency of the combustion chamber and reducing pollution emission.

Description

technical field [0001] The invention relates to a gas turbine combustor, in particular to a gas turbine pre-evaporation combustor burning ethanol fuel. Background technique [0002] Due to the limited supply of global fossil fuel reserves and the pressure of environmental pollution, the application of biomass fuels such as ethanol and biodiesel has been strongly advocated. Among them, ethanol is a renewable energy, which can be produced by fermenting sugar and other processes, thereby reducing the dependence on non-renewable fossil fuels and benefiting the sustainable development of human beings. The application of ethanol fuel has certain strategic significance for the global response to the energy crisis. In addition, the use of biological enzyme technology and agricultural product fermentation technology can produce ethanol from various biological materials such as grain, sucrose, and fiber, which can adjust the contradiction between grain supply and demand to a large ex...

AI Technical Summary

Problems solved by technology

However, the existing pre-evaporation and pre-mixing combustion technology is mainly aimed at aviation kerosene, which is not fully applicable to the characteristics of low boiling point, easy volatility and high latent heat of evaporation of ethanol fuel, and needs to be properly optimized and improved.

[0006] Most of the current gas turbines use kerosene, diesel, natural gas or syngas as fuels. Due to the different properties of fuels, the combustion chambers of gas turbines using different fuels cannot be completely universal.

Using the existing gas turbine combustion chamber to burn ethanol fuel not only cannot give full play to the advantages of ethanol fuel, but also brings problems such as unstable combustion, low combustion efficiency, serious pollution emissions, and insufficient structural strength.

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