煤制甲醇CO变换工艺组合方式的研究

文章建立了国产B302Q催化剂变换反应ASPEN用户动力学子模块,经验证其用于模拟计算较为可靠。在对Shell煤气化工艺制甲醇的CO变换过程分析的基础上,研究了8种工艺方案,探讨了不同工艺的变换条件、限制因素和相应的能量消耗。模拟计算表明,实际可能的工艺有方案1,方案2,方案4,方案5和方案8共5种。其中,方案8与方案2相比,汽气比下降了57%;当变换率都为70%以上时,蒸汽消耗最少的方案8工艺所需蒸汽只占了气化炉产生蒸汽量的1/4左右。

CO shift process modes for coal to methanol

ASPEN user kinetics model of shift reaction was established by using domestic catalyst B302Q,which is proved to be more reliable for simulating calculation.Through the CO shift process analyses of methanol synthesis techniques based on shell gasification,eight schemes of techniques combination were founded,and the shifting conditions,limiting factors as well as corresponding energy consumptions of different schemes were discussed.Calculation result indicates that there are five realizable cases including case 1,case 2,case 4,case 5 and case 8.Comparing case 8 with case 2,the ratio of steam to gas falls by 57%.While the shift degree is above 70%,case 8 with the least steam consumption is only a quarter of steam amount produced from the gasification.