煤制气甲烷化过程能量利用评价方法比较  

Comparison of evaluation methods of energy utilization in the syngas methanation process

作　　者：孙丽萍 刘月娥[1] 朱文坚 张静 鲍喜军 黄雪莉[1] 

机构地区：[1]石油天然气精细化工教育部和自治区重点实验室新疆大学化学化工学院,新疆乌鲁木齐830046 [2]新疆庆华能源集团有限公司,新疆伊宁835100

出　　处：《能源化工》2015年第3期27-31,共5页Energy Chemical Industry

基　　金：新疆高技术研究发展计划项目(201314101);国家自然科学基金项目(21366032)

摘　　要：针对煤制气托普索甲烷化工艺中的典型反应装置和非反应装置,采用能量衡算法和有效能分析法,选定相关的计算基准,比较不同方法,同时对照比较了Aspen Plus的模拟计算结果。研究表明:在进行焓差计算中,平均热容法、统一基准焓法和统一热值法计算结果接近,后两者计算过程简单清晰,但Aspen Plus计算结果有较大差距;在计算物流焓时,3种方法计算结果各不相同,但统一基准焓法可与Aspen Plus的计算值相统一;在进行有效能分析中,化学有效能计算基准采用龟山-吉田模型,可与统一基准热值法相统一,便于比较。Aiming at the typical devices with chemical reactions and non-reaction in the Tpsoe syngas methanation process,the energy utilization is analyzed with the methods of energy balance and exergy analysis. The relevant calculation benchmark is chosen,and the simulated results of Aspen Plus are compared with those of other methods. The results show that in the calculation of enthalpy difference,the results of average heat capacity method,unified benchmark enthalpy method and unified benchmark heat value method are similar,and the calculating processes of the latter two methods are simple and clear,but the results of Aspen Plus have obvious deviation. In the calculation of enthalpy of streams,the results of 3 methods are diverse from each other,but the results of unified benchmark enthalpy are consistent with those of Aspen Plus. In the exergy analysis,Kameyama-Yoshida model can be used as the calculation base of the chemical exergy,which is agree to unified benchmark heat value.

关 键 词：能量衡算法 有效能分析法 计算基准 ASPEN PLUS软件 

分 类 号：TE665.3[石油与天然气工程—油气加工工程]