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中文摘要：
为了实现对IGCC系统整体的热力特性分析，从而明确系统各部分能量损失，以便于针对系统各个子环节提出相应的节能措施。基于Aspenplus过程模拟软件，首先完成了对整体煤气化联合循环（IGCC）的整体模拟，然后采用[火用]分析法对系统各主要部分进行了热力特性分析。采用德士古气化炉对原煤浆进行气化，常温湿法脱硫以及三压再热锅炉回收燃气轮机乏汽，系统循环热效率达到42．8％，排烟温度仅为89℃，满足了电厂对热效率和排烟标准的要求。结果进一步表明，热量损失最大部分发生在粗煤气净化处（娴损率分别为11．2％、22．8％），其次是余热锅炉和气化炉，加快高温干法脱硫技术或炉内脱硫的研究，是进一步提升系统热效率的有效方向。
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