级系统变工况特性研究 -

采用成熟的商业软件Thermoflex对IGCC系统进行模拟,建立了200MW级IGCC系统并对其进行物质和热平衡的核算。分析了导致IGCC系统变工况的原因,得出了机组负荷的变化、大气环境条件的变化和部件性能的变化是导致IGCC系统变工况的主要原因。并对其中的燃机负荷波动和大气条件(环境温度、大气压力)变化引起的系统的变工况进行计算分析。得出系统的效率、功率、燃机效率、功率和蒸汽侧主要参数在IGCC系统变工况中的变化规律。 The mature commercial software Thermoflex was used to simulate the IGCC system.200MW IGCC system was established and material and thermal equilibriums were calculated in the text.The reasons of resulting in IGCC system off-design were analyzed,and the result shows that the mostly reasons of resulting in IGCC system off-design are the varieties of unit load,atmosphere condition and components capability.The characteristic of system off-design aroused by the changes of gas turbine load and atmosphere condition(environment temperature,atmosphere pressure)was calculated and analyzed.The change rules of system efficiency and power,gas turbine efficiency and power,and mostly parameters of steam side in the IGCC system off-design are gained