高温煤气化炉热力性能计算及分析  

Calculation and Analysis of Thermal Performance of High Temperature Coal Gasifier

作　　者：马青 MA Qing(Ningxia Electric PowerEnergy Technology Co.,Ltd.,Yinchuan 750o02,Ningxia Province,China)

机构地区：[1]宁夏电力能源科技有限公司,宁夏银川750002

出　　处：《电力与能源》2022年第6期533-539,共7页Power & Energy

摘　　要：高温高压的气流床煤气化技术是煤炭利用的关键性技术,而高温高压下煤与焦的化学特性及物理特性对煤气化反应的热力性能具有重要的影响。通过研究分析煤炭气化的物理过程与化学过程,采用物料衡算和热量衡算的方法建立了煤气组分及份额的化学平衡态方程,提出了煤炭气化反应器模型,仿真分析了绝热气化和非绝热气化条件耦合确定的反应温度和组分份额,探讨了煤气化过程的温度、氧煤比以及蒸汽煤比对煤气化的效率、气产率和碳转化率等气化特性的影响,可为高温高压下煤气化技术的应用提供理论指导。High temperature and high pressure airflow bed coal gasification technology is the key technology for coal utilization, and the chemical and physical characteristics of coal and coke under high temperature and high pressure have an important impact on the thermal performance of coal gasification reaction. By studying and analyzing the physical and chemical processes of coal gasification, the chemical equilibrium equation of coal gas components and fractions was established by means of material balance and heat balance, and the model of coal gasification reactor was put forward. The reaction temperature and fractions determined by coupling conditions of thermal and non-adiabatic gasification were simulated and analyzed. The effects of the temperature, oxygen/coal ratio and steam/coal ratio on the efficiency, gas yield and carbon conversion of coal gasification were discussed, providing theoretical guidance for the application of high temperature/high pressure coal gasification technology.

关 键 词：煤气化 平衡态模型 气化温度 煤气组分 碳转化率 

分 类 号：TQ53[化学工程—煤化学工程]