Optimization and Performance Study of Thermal System of 1 000 MW Ultra-supercritical Coal-fired Unit Based on Carbon Capture
With the purpose of reducing the energy consumption of CO2 and promoting the efficiency of power generation,this paper proposes an optimization scheme of double reheat-carbon capture coupled with solar and ORC systems,using the ultra-supercritical double reheat-carbon capture system as the reference system.In this paper,an optimization scheme of double reheat-carbon capture coupled with solar and ORC systems is proposed.The optimized system model is constructed using Ebsilon software.The thermal performance,economics and operational performance of the system were analyzed.The results of the study showed that the thermal efficiency of the optimized system was increased by 4.78%,and the heat consumption was reduced by 1005 kJ/(kW-h)and coal consumption by 36.50 g/(kW-h)compared to the reference system;the annual operating time of the solar auxiliary system is 60%,and the average coal saving can reach 2.0×104 t.The optimized scheme has better thermal economy and reduced coal consumption for power generation,which provides an optimization idea for CO2 capture and emission reduction.
NETL
NSTL
万方数据
