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2006年06月30日

【期刊论文】NUMERICAL SIMULATION OF NOX EMISSION DURING HIGH TEMPERATURE AIR COMBUSTION FOR BURNING LOW HEAT VALUE GAS

朱彤， Tong Zhu， Dezhen Chen， Hesheng Zhang， Wentao Rao

International Conference on Energy and the Environment, Dec 11-13, 2003，-0001，（）：

-1年11月30日

The numerical simulations of high temperature air combustion (HiTAC) for burning low heat value gas have been carried out. The standard k-e turbulent model with a wall function, assumed β probability function density (PDF) combustion model, discrete ordinates (DO) radiation model and thermal NOX model were used in the simulation. The simulation results indicated that both the burner structure and operation parameters played important roles on combustion temperature field and NOX emission, and that the flame temperature and NOX emission decreased with the reduced preheated combustion air temperature and the increased heat flux through furnace wall. Simulated high NOX concentration field was predicted to be outside of flame, which was in agreement with experimental results. Delaying the mixing of combustion air stream and fuel gas stream in HiTAC would decrease the maximum flame temperature and NOX emission.

NOX emission， high temperature air combustion， nozzle， low heat value fuel gas