基于Aspen Plus抚顺式油页岩干馏工艺数值模拟

Numerical simulation of Fushun type retorting technology of oil shale based on Aspen Plus

在Aspen Plus平台上建立了抚顺式油页岩干馏工艺模型,利用Aspen Plus的灵敏分析模块研究了抚顺炉气化段温度对产气组分的影响、空气/水蒸汽质量流率比值对产气组分和产气热值的影响,以及干馏段温度对收油率的影响,模拟结果与实际数据吻合良好。结果表明,抚顺炉气化段温度在650～750℃反应最为剧烈,生成的气体量收益最好。随着空气/水蒸汽质量流率比的逐渐增加,CH4和CO2量逐渐减少,CO、H2和N2量逐渐增加,热值也随之降低。干馏段温度在550℃时,收油率达到6.85%,可作为干馏炉热解段的最佳运行温度。

Fushun type retorting process model of oil shale is established based on Aspen Plus.Aspen Plus sensitive analysis module is used to investigate the influence of gasification section temperature for Fushun furnace on the gas components,the influence of mass flow rate ratio of air/steam on the gas components and gas calorific value and the influence of dry distillation temperature on oil yield.The simulated results show the good agreement of actual data.The best oil yield can be achieved when the gasification section temperature is around 650-750℃.As the mass flow rate ratio of air/steam increases,the amount of CH4 and CO2 and calorific value gradually decreases,while the amount of CO,H2 and N2 increases gradually.The dry distillation section temperature at 500℃ can be considered as the best operating temperature during the retorting segment,its oil yield is up to 6.85%.