The Value Of Blending Coal Combustion In 1000MW Ultra-supercritical Corl-fired Power Plant

As the power system reform keeps processing,it is essential for a power generation company to improve its quality and increase the efficiency in order to ensure their competitiveness and survival.Fuel cost is the largest composition of the running cost of a power plant.This essay proposes a collaborative optimizing strategy on the coal blending combustion and coal procurement to guide the enterprise operation under a varying global coal market while ensuring a basic safe production and to reach the maximum profit while shrinking the generating cost to the least.The essay first introduces the importance of the coal blending combustion to a thermal power generation and the risk.Then the controlling method is introduced based on the actual operating experience to reach the maximum efficiency while satisfying the fundamental requirement of safety,economy and green.On the control of corporation operating cost,the value of coal blending combustion is researched in this essay.After calculating the effect to the boiler efficiency,power consumption rate and turbine heat consumption,the net coal consumption rate is approached.Other increased costs are computed at the same time in order to define the boundary condition of positive profit.Finally,a linear model which minimizes the weighted coal prize is established to find out the best blending ratio.On the field of cost controlling,this essay mainly talks about the value of coal blending combustion.After analyzing the influence of coal blending to boiler efficiency,consumption rate,heat consumption and net coal consumption rate,the essay calculates the other cost added and confirm the edge of positive profit.At last,a linear programming model is built to find the optimized blending ratio.In order to reach the optimized condition between the cost controlling and safety production,this essay applies the blending model to the coal procurement and get a new model.The best blending ratio is obtained from the model.As the varying coal market and safety production,the best blending ratio continues to change.We need to adjust the coal procurement combination and satisfy the basic safety production need.