Theoretical and experimental study on ignition of pulverized coal by high temperature air in power plants
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摘要: 在一維平面層流煤粉氣流著火的數學模型的基礎上,發展了一種更加逼近工程實際的一維平面紊流煤粉氣流著火模型.在該數學模型的指導下,設計了高溫空氣煤粉點火試驗臺.通過大量的空氣加熱試驗和煤粉氣流著火試驗,對模型進行了實驗驗證.結果顯示,理論模型的計算結果與實驗相符合,驗證了高溫空氣煤粉點火技術的可行性.Abstract: A more accurate one-dimensional turbulent ignition model of pulverized coal air flow in a tube was established on the basis of the one-dimensional plane laminar flow ignition model. An experimental plat for high temperature air pulverized coal ignition was set up. To test the theoretical model, air heating and pulverized coal ignition experiments were done. The experimental results are in good agreement with the calculated ones. The feasibility of pulverized coal ignition by high-temperature air was proved.
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Key words:
- pulverized coal air flow /
- turbulent flow /
- ignition model /
- high-tempeture air /
- free-oil ignition
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