【摘要】 为提升生物质制备甲醇的效率并减少碳排放，提出了一种基于生物质秸秆气化的绿色甲醇制备系统。该系统以生物质为碳源，利用碱性电解水制取绿氢，并形成调节合成气制备绿色甲醇。通过Aspen Plus模拟系统流程，结果表明，虽然电解水增加了厂用耗电量，但新提出的系统在碳转化率和综合能源效率方面均得到显著提升，分别为65.41%和69.47%。系统的效率为67.26%,显示该系统对有效能的利用率较高。系统动态回收周期为8.62 a,净现值为210.11万美元，单位产品能耗量为4.07 MWh,且单位能耗二氧化碳排放量低至0.04 t/GJ,表明该系统在经济效益以及环境保护方面具有一定优势。更多还原

【Abstract】 A green methanol synthesis system based on straw gasification is proposed to enhance the efficiency of biomass-derived methanol production and reduce carbon emission.This system utilizes biomass as a carbon source, employs alkaline water electrolysis to generate green hydrogen, and forms regulated syngas to produce green methanol.Through Aspen Plus simulation on the system process, the results indicate that despite the increased electricity consumption due to water electrolysis, the proposed system demonstrates significant improvements in carbon conversion rate and overall energy efficiency, reaching 65.41% and 69.47%,respectively.The exergy efficiency of the system is 67.26%,indicating a high utilization of effective energy.The dynamic payback period of the system is 8.62 years, the net present value is US$2.101 1 million, the unit product energy consumption is 4.07 MW·h, and the unit carbon dioxide emission is as low as 0.04 t·GJ^-1.These findings highlight the system’s notable advantages in terms of both economic benefits and environmental protection.更多还原