IGCC整体煤气化联合循环发电系统的数值模拟毕业设计
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整体煤气化联合循环和整体煤气化燃料电池联合循环都是正在开发的高效的发电技术。然而，IGCC/IGFC在按最高理论情况下的总的热效率仍是低于52％。为了获得更高的发电效率，我们实验室提出了先进的IGCC（A-IGCC）或先进的IGFC（A-IGFC）系统。这种系统通过燃气轮机或燃料电池，利用㶲回收的概念来用于煤和生物质余热的回收利用。与此同时，相应的系统，一种新的高密度三床联合循环流化床气化炉，这种气化炉有下行裂解炉，鼓泡流化床，煤焦气化炉和立管（上升管）燃烧器组成，进而取代传统的气化炉的想法被提了出来。例如，气流床气化炉等。新的系统将更有效的利用燃气轮机中的余热或燃料电池和在燃烧室中的煤和生物质中未反应的碳的分解和气化而产生的热量。在这个简短的回顾，充分的陈述和讨论了高密度TBCFB气化炉的发展的优势以及在未来中的挑战。
Abstract
Coal-fired Integrated Gasification Combined Cycle(IGCC) and Integrated coal Gasification Fuel-cell Combined cycle(IGFC) are being developed as high-efficiency electric power generation technology . However, the highest theoretical gross thermal efficiency of the conventional IGCC/IGFC is still below 52%. In order to obtain higher power generation efficiency ,an advanced IGCC(A-IGCC) or advanced IGFC(A-IGFC) system making use of the exergy recuperation concept by recycling waste heat from gas turbine or fuel cells for steam gasification of coal and biomass was proposed in our laboratory. Corresponding to this system, a novel high-density triple-bed combined circulating fluidized bed (TBCFB) gasifier, composed of a downer pyrolyzer, a bubbling fluidized bed char gasifier, and a riser combustor, was proposed to replace traditional gasifiers such as the entrained flow bed gasifier. The new system is expected to more effectively utilize the waste heat from gas turbines or fuel cell sand the heat produced by the combustion of the unreacted char in the riser combustor for pyrolysis and gasification of coal and biomass. In this short review, the advantages and future challenges in the development of high-density TBCFB gasifier are presented and discussed.2010 Chinese Society of Paticuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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