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对3类典型煤基动力系统,即供电功率为300、1000 MW的燃煤动力系统、300 MW煤气化联合循环动力系统与300 MW煤基化工动力多联产系统,采取及未采取CO2减排措施的8种不同工艺过程进行了能源、环境、经济(3E)性能的分析和综合评价。结果表明:各系统3E性能主要与产品生产阶段相关。联产系统的3E性能整体优于单产系统,未回收CO2与CO2循环的双气头多联产系统的当量供电效率为35.78%和37.71%,对应供电成本为0.182和0.179 RMB/(kW h),单位供电量CO2排放量为0.712和0.641kg/(kW h),以1000 MW煤粉炉电站为参比系统,对应CO2的减排成本为0.67和0.53 RMB/kg,且对碳税变化不敏感。联产系统中,CO2循环的系统的3E性能总体优于未回收CO2的系统,但其经济性受甲醇市场价格的影响显著。
Three types of typical coal-based power systems, that is, coal-fired power systems with power supply of 300 and 1000 MW, 300 MW coal-fired combined cycle power system and 300 MW coal-based chemical power co-generation system, Measures of the 8 different processes were energy, environment, economy (3E) performance analysis and comprehensive evaluation. The results show that the performance of each system 3E is mainly related to the production stage. The 3E performance of the co-generation system as a whole is superior to that of the single-production system. The equivalent power supply efficiencies of 35.78% and 37.71% for double-gas multiple co-generation without recycling CO2 and CO2 are 0.182 and 0.179 RMB / (kWh) , And the CO2 emission per unit of electricity supply is 0.712 and 0.641kg / (kWh) respectively. Taking the 1000 MW pulverized coal fired power station as the reference system, the corresponding emission reduction costs of CO2 are 0.67 and 0.53 RMB / kg, respectively, sensitive. In the co-generation system, the 3E performance of the CO2 cycle system is generally better than that of the system without CO2 recovery, but its economy is significantly affected by the methanol market price.