IGCC整體煤氣化聯合循環發電系統的數值模擬畢業設計
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整體煤氣化聯合循環和整體煤氣化燃料電池聯合循環都是正在開發的高效的發電技術。然而，IGCC/IGFC在按最高理論情況下的總的熱效率仍是低于52％。為了獲得更高的發電效率，我們實驗室提出了先進的IGCC（A-IGCC）或先進的IGFC（A-IGFC）系統。這種系統通過燃氣輪機或燃料電池，利用㶲回收的概念來用于煤和生物質余熱的回收利用。與此同時，相應的系統，一種新的高密度三床聯合循環流化床氣化爐，這種氣化爐有下行裂解爐，鼓泡流化床，煤焦氣化爐和立管（上升管）燃燒器組成，進而取代傳統的氣化爐的想法被提了出來。例如，氣流床氣化爐等。新的系統將更有效的利用燃氣輪機中的余熱或燃料電池和在燃燒室中的煤和生物質中未反應的碳的分解和氣化而產生的熱量。在這個簡短的回顧，充分的陳述和討論了高密度TBCFB氣化爐的發展的優勢以及在未來中的挑戰。
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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