Investigation Of Dry Low Emission Gas Turbine Combustion Chamber

From the viewpoint of reducing the emission of NOx, this thesis studied on Dry Low Emission (DLE) Combustion Chamber as the following:Reducing emissions from gas turbine is a difficult and hot issue for us, and reducing NOx emission is the most important aspect of it. Common technologies currently used to reduce NOx emission were introduced in this thesis, and the conclusion is made that DLE combustion chamber is a preferred solution.The detailed mechanism of NOx formation during the combustion procedure was discussed. Thermal NO is the major factor for NOx emission formation. Based on this, technologies to reduce NOx formation are analyzed and design principles of using DLE combustion chamber in gas turbine are elaborated.For full-load and lower loads of gas turbing operation, numerical models for designing DLE gas turbing combustion chamber were established, which provides mathematical method for estimating NOx emission and theoretical information for engineering.Measurements of temperature field in combustion chamber and NOx emissions were specified, which provide test methods for DLE combustion chamber design. This thesis also presented an introduction to current world-wide developed combustion chambers, pointed out their different design features and principles, to serve as a valuable reference in our future research.At last, with the case of a simplified model for Siemens V94. 2 gas turbine combustion chamber of Hainan Yangpu Power Co. , Ltd, thermal NO emission was simulated with numerical calculation, which shows that the models and mathematical methods used for simulating NOx emission of DLE gas turbine combustion chamber are viable and may be an auxiliary way for DLE gas turbine combustion chamber design and development.