CAJ | 학술논문

用AspenPlus软件对O2／CO2燃烧气氛下600MW燃煤电厂全过程进行建模分析和优化，对空分系统、烟气处理系统进行功耗分析，并对空分系统、锅炉热力发电系统和烟气处理系统三大系统耦合优化分析。结果表明，当对600MW传统电厂改造成富氧燃烧时，空分系统占电厂总电耗58．54％，烟气处理系统占总电耗26．97％，电厂的供电效率由原来的37．69％降低到25．62％；当对富氧燃烧进行综合优化后，空分系统电耗可以降低22．6％，烟气处理系统略增1．3％，电厂的供电效率可以提高3．11％，最佳供氧浓度为98％。
용AspenPlus연건대O2／CO2연소기분하600MW연매전엄전과정진행건모분석화우화，대공분계통、연기처리계통진행공모분석，병대공분계통、과로열력발전계통화연기처리계통삼대계통우합우화분석。결과표명，당대600MW전통전엄개조성부양연소시，공분계통점전엄총전모58．54％，연기처리계통점총전모26．97％，전엄적공전효솔유원래적37．69％강저도25．62％；당대부양연소진행종합우화후，공분계통전모가이강저22．6％，연기처리계통략증1．3％，전엄적공전효솔가이제고3．11％，최가공양농도위98％。
The whole process system of a 600MW coal-fired power plant in O2/CO2 atmosphere was modeled by Aspen Plus software, which included air separation unit （ASU）, CO2 compression and purification unit （CPU）, combustion system and thermodynamics system. Also, the three sub-system mentioned were coupled and optimized. The results indicate that the power consumption of ASU accounts for 58.54% and CPU accounts for 26.97% of total power consumption. Compared to the reference plant, the net electrical efficiency is reduced to 25.62% from 37.69%. With heat integration from ASU and CPU process and other optimization, the net electrical efficiency increase 3.11% and when the oxygen purity is 98%, the power consumption of ASU and CPU is fewest.