Research on the deep cascade utilization scheme of flue gas waste heat coupled with circulating water based on Ebsilon
Based on Ebsilon,the cascade utilization scheme of flue gas waste heat coupling circulating water waste heat depth of a million-unit was simulated.The scheme is optimized and improved by simulation calculation,and provides a reference for the technical and economic calculation of the unit under varying working conditions.The simplified boiler model and the absorption heat pump model are presented,and the simulation calculation is carried out under different working conditions to obtain the operating parameters of the system.The results show that the simulated power is 47 MW higher than the design value under fully open valve(VWO),with an error of less than 5%,while the simulated absolute error of heat consumption under different working conditions is less than 3.4%,indicating that the simulation results are accurate.In addition,after the transformation of flue gas waste heat utilization,especially under 30%THA low load condition,the heat consumption value of the system increases by 1.6%,which shows that the transformation scheme has the best improvement effect under low load deep regulation condition.In summary,Ebsilon software can effectively simulate the cascade utilization scheme of flue gas waste heat coupling circulating water waste heat depth,and the simulation results have high accuracy.The scheme can significantly increase the heat consumption rate of the unit operation,especially under low load conditions,which is of great significance for improving energy utilization efficiency and reducing operating costs.
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