Study Of Fuel Blended Combustion Characteristics And Numerical Simulation Of Combustion Process In Boiler

In recent years, BFG power generation technology's applications were ascendanting and created a new idea of BFG rational use. Burning BFG power generation include two ways:full firing and co-firing. Practice shows that using BFG power generation can significantly optimize the energy structure, reduce production costs and pollutant emissions and ease the tense situation of the electricity, make multiple effects including energy saving, emission reduction and so on, and make good economic and social benefits.In this paper, the combustion process in power plant of 130 t / h pulverized coal and BFG blended fired boiler and 220 t / h full BFG fired boiler were simulated by CFD software. First, analied the BFG combustion's characteristics and dissertated the pulverized coal and BFG blended combustion's significance and necessity. Second, summarized the combustion's characteristics in pulverized coal and BFG blended fired boiler by numerical simulation and the accuracy of the calculation model be calibrated and determined the optimal fuel blending ratio and its influencing factors. Simulated lumbar and Zhitong full BFG fired boiler furnace's pressure field, velocity and temperature fields; and analysised the dual-swirl burner and stable combustion zone in the entire BFG fired boiler in the role and significance. Finally, the NO_x emissions were simulated and compared at different blending rations.Through the above work, the combustion process of pulverized coal and BFG blended fired boiler and full BFG fired boiler be displaied directly. The combustion theory and numerical simulation are integrated perfectly by the above work. It is good for the further development and consummation of the two-phase fuel combustion theory and numerical simulation of BFG power generation technology. At the same time, the study also provides reasonable theoretical guidance for similar boiler's optimization design and operation...