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本文针对生物质能独特的碳氢结构特点以及现有生物质能应用技术存在的问题，提出了基于化学能、物理能梯级利用为基础的控制CO2排放的多功能系统集成原则，即：化学能、物理能梯级利用原则，化学势能梯级利用以及分步转化原则，能量释放、迁移与CO2控制一体化原则。并且基于这些原则给出了控制CO2排放的多功能系统集成典型思维流程。在本文中提出一个生物质一天然气：互补的控制CO2排放的甲醇一动力串联型的多功能系统。采用商用流程模拟软件aspenplus完成系统计算分析。结果表明，该多功能系统采用了双原料互补，适度重整反应机制，适度甲醇合成，分级转化合成气，系统层面控制CO2等，不仅实现了2O％的CO2减排，同时在相同的化工产品与动力输出情况下可以节省原料输入5％-12％。该系统体现了本文所提出的控制CO2排放的多功能系统集成原则，为生物质以及天然气的更高效利用提供了一条有效途径。

This paper summarized that according to the special hydrocarbon structure in biomass and the current problems during tile bio-energy utilization, the author put forward three fundamental principles for integrating multifunctional system with CO2 control： cascaded utilization of chemical ＆ physical energy; cascaded utilization of chemical potential and stepping conversion; and the integration of energy conversion, transportation and CO2 control. And put forward the typical flow chart for integrating novel multifunctional systems with CO2 control, which are based on those principles. A novel multifunctional system with CO2 control based on biomass and natural gas is suggested here as a case study. The evaluation and calculation of the system are carried out by the help of Aspen Plus process simulator. The results show that, the suggested system with such features： complementary of biomass and natural gas, partial reforming of natural gas and partial methanol synthesis; stepping conversion of syngas （chemical product first, and then power）, and integration of energy conversion, transportation and CO2 control, can not only reduce 20%CO2 emission but also save energy 5%-12% when compared with those individual systems even without any CO2reduetion. The proposed multifunctional system with CO2 control would be expected to realize effective utilization of biomass and natural gas, and offer a possibility of developing new technologies for biomass and natural gas based systems.