摘要
本文根据生物质能源具有的自身特点,提出一个适合生物质能源利用的新型多联产系统。在原有天然气基甲醇生产系统中增加生物质气化子系统,充分利用天然气-水蒸气重整与生物质气化制取合成气中碳氢有效成分互补的特点,通过合理配气满足最佳的甲醇合成要求,因此屏蔽掉了变换,补碳,脱碳等分产必需的工艺过程,同时借助动力系统实现未反应气的合理利用,在满足较高的甲醇产率前提下降低了化工产品能耗,动力系统借助化工过程克服燃料燃烧过程品位损失过大的难题,是组分对口分级转化能量梯级利用的本质体现。针对不同天然气生物质输入比情况下合成气一次性通过,以及最佳输入比情况下未反应气适度循环两种方案,本文分别进行了深入分析,具有8%～14%的节能潜力。为生物质能的高效应用以及缓解能源危机提供了一条有效的途径。
In this paper according the characteristics of natural gas and biomass, a new polygeneration system is presented which takes natural gas and biomass as co-feed. A biomass oxygen gasification subsystem is added into an conventional natural gas to methanol system, achieving the best ratio of H2 to CO in order to satisfy methanol synthesis by change the input ratio of natural gas to biomass. Therefore, shift process, carbon addition process and so on, are canceled in the suggested polygeneration system. Besides that, the unreacted syngas will be used in a better way by a combined cycle power generation subsystem in the new system. This paper presented two schemes, the syngas once through scheme and partial recycle with fixed input ratio scheme, and the results show that the two schemes can realize 8%-14% energy saving potential. And finally, EUD is adopted to reveal the potential of energy saving in key processes.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2009年第4期541-545,共5页
Journal of Engineering Thermophysics
基金
国家自然科学基金重大国际合作资助项目(No.50520140517)
