What is the best green propylene production pathway?: technical, economic, and environmental assessment,Green Chemistry

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What is the best green propylene production pathway?: technical, economic, and environmental assessment
Green Chemistry ( IF 9.3 ) Pub Date : 2021-09-08 , DOI: 10.1039/d1gc01791h
Heehyang Kim ₁ , Boreum Lee ₁ , Dongjun Lim ₁ , Changgwon Choe ₁ , Hankwon Lim _{1,

2}

Affiliation

Owing to the increasing demand for propylene, many propylene production pathways have been developed, such as naphtha catalytic cracking, olefin metathesis, propane dehydrogenation, and methanol to propylene (MTP) conversion. As environmental regulations become more stringent, green propylene should be explored to enhance sustainable production and reduce CO₂ emissions. MTP conversion through CO₂ hydrogenation (indirect MeOH synthesis) and CO₂ electrolysis (direct MeOH synthesis) has been explored as a green propylene production pathway. To evaluate the possibility of green propylene production from technical, economic, and environmental perspectives, process simulation, economic analysis, and environmental assessment were performed for MTP conversion via indirect and direct methanol synthesis. Furthermore, the best alternative for green propylene production was determined via an analytic hierarchy process, considering technical, economic, and environmental aspects, at the same time, with different weighted values of each criterion, under uncertainty. Our results indicated that MTP via direct MeOH synthesis was superior in cases where the environmental impact is the most important, while MTP via indirect MeOH synthesis was the most appropriate alternative for green propylene production, with the technical and economic impacts being more critical than the environmental impacts.

中文翻译：

什么是最佳的绿色丙烯生产途径？：技术、经济和环境评估

由于对丙烯的需求不断增加，已经开发了许多丙烯生产途径，例如石脑油催化裂化、烯烃复分解、丙烷脱氢和甲醇到丙烯（MTP）转化。随着环保法规日趋严格，应探索绿色丙烯，以提高可持续生产并减少CO ₂排放。通过 CO ₂加氢（间接甲醇合成）和 CO ₂电解（直接甲醇合成）的MTP 转化已被探索作为绿色丙烯生产途径。为了从技术、经济和环境的角度评估绿色丙烯生产的可能性，对 MTP 转化进行了工艺模拟、经济分析和环境评估通过间接和直接甲醇合成。此外，绿色丙烯生产的最佳替代方案是通过层次分析法确定的，同时考虑了技术、经济和环境方面，在不确定的情况下，每个标准的加权值不同。我们的结果表明，在环境影响最重要的情况下，通过直接甲醇合成的MTP更优越，而通过间接甲醇合成的MTP是绿色丙烯生产的最合适替代方案，技术和经济影响比环境影响更重要。影响。

更新日期：2021-09-08

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