Three generation systems, namely, steam Rankine cycle （SRC）, organic Rankine cycle （ORC）, and steam-organic combined Rankine cycle （S-ORC）, were simulated using the Engineering Equation Solver fEES） to efficien...Three generation systems, namely, steam Rankine cycle （SRC）, organic Rankine cycle （ORC）, and steam-organic combined Rankine cycle （S-ORC）, were simulated using the Engineering Equation Solver fEES） to efficiently utilize flue gas emissions from 200 to 450 ℃ in iron and steel plants. Based on the simulation results for thermal efficiency, exergy efficiency, and power generation, the performances of the three power generation systems were compared and analyzed. To further utilize waste heat from the turbine exhaust steam of the ORC system, cas- cade （）RC （CORC） was designed for heat sources above 300 ℃. Based on a comprehensive performance comparison, the application of the ORC using R141b is preferable for 200 to 300 ℃ flue gas. For 300 to 450 ℃ flue gas, CORC is an alternative technology to improve the efficiency and quality of waste heat utilization. For flue gas above 450 ℃, S-ORC can achieve higher efficiency and power generation than conventional SRC, with a relatively small negative pressure and high dryness of the turbine outlet steam. Hence, S-ORC can be considered as a substitute for SRC.展开更多
为了解决目前固定床加氢技术无法处理的硫化物、氮化物、氧化物、金属等杂原子和杂质含量较高的煤焦油类的劣质重质油的问题,阐述了BRICC(Beijing Research Institute of Coal Chemistry)中低温煤焦油非均相悬浮床加氢技术的开发背景、...为了解决目前固定床加氢技术无法处理的硫化物、氮化物、氧化物、金属等杂原子和杂质含量较高的煤焦油类的劣质重质油的问题,阐述了BRICC(Beijing Research Institute of Coal Chemistry)中低温煤焦油非均相悬浮床加氢技术的开发背景、工艺技术路线、特点及技术进展,把现有各种煤焦油加氢技术根据特点划分为4类,分析每一类技术的优缺点,指出了BRICC中低温煤焦油非均相悬浮床加氢技术与现有其他技术的区别;用200 kg/d规模的连续运转装置的实际运行结果验证了BRICC技术的先进性:BRICC技术适合加工目前固定床加氢技术无法加工的杂质含量较高的煤焦油重质油,根据所加工油品的性质可采用不同的加工路线进行分质分级加工利用,液体产品收率高达90%以上,是目前先进的煤焦油深加工技术。展开更多
基金Sponsored by Science and Technology Commission Foundation of Jiangsu Province of China(BA2010035)
文摘Three generation systems, namely, steam Rankine cycle （SRC）, organic Rankine cycle （ORC）, and steam-organic combined Rankine cycle （S-ORC）, were simulated using the Engineering Equation Solver fEES） to efficiently utilize flue gas emissions from 200 to 450 ℃ in iron and steel plants. Based on the simulation results for thermal efficiency, exergy efficiency, and power generation, the performances of the three power generation systems were compared and analyzed. To further utilize waste heat from the turbine exhaust steam of the ORC system, cas- cade （）RC （CORC） was designed for heat sources above 300 ℃. Based on a comprehensive performance comparison, the application of the ORC using R141b is preferable for 200 to 300 ℃ flue gas. For 300 to 450 ℃ flue gas, CORC is an alternative technology to improve the efficiency and quality of waste heat utilization. For flue gas above 450 ℃, S-ORC can achieve higher efficiency and power generation than conventional SRC, with a relatively small negative pressure and high dryness of the turbine outlet steam. Hence, S-ORC can be considered as a substitute for SRC.
文摘为了解决目前固定床加氢技术无法处理的硫化物、氮化物、氧化物、金属等杂原子和杂质含量较高的煤焦油类的劣质重质油的问题,阐述了BRICC(Beijing Research Institute of Coal Chemistry)中低温煤焦油非均相悬浮床加氢技术的开发背景、工艺技术路线、特点及技术进展,把现有各种煤焦油加氢技术根据特点划分为4类,分析每一类技术的优缺点,指出了BRICC中低温煤焦油非均相悬浮床加氢技术与现有其他技术的区别;用200 kg/d规模的连续运转装置的实际运行结果验证了BRICC技术的先进性:BRICC技术适合加工目前固定床加氢技术无法加工的杂质含量较高的煤焦油重质油,根据所加工油品的性质可采用不同的加工路线进行分质分级加工利用,液体产品收率高达90%以上,是目前先进的煤焦油深加工技术。
