This article presents comparative techno-economic and environmental analyses of four representative shale gas monetization options, namely, conventional shale gas processing, large-scale methanol manufacturing, modular methanol manufacturing with shale gas supplied by pipelines, and modular methanol manufacturing with consideration of plant relocation. We first present shale gas supply models for the four gas monetization options. Next, the process designs for shale gas processing and methanol manufacturing from shale gas are described. We develop detailed process simulation models for shale gas processing and methanol manufacturing with different scales using raw shale gas extracted from the Marcellus, Eagle Ford, and Bakken shale plays. On this basis, techno-economic analyses and environmental impact analyses are conducted for the four shale gas monetization options to systematically compare their economic and environmental performances based on the same conditions. The results show that modular methanol manufacturing is more economically competitive than conventional shale gas processing, although it leads to higher environmental impacts. Besides, modular methanol manufacturing is better than large-scale methanol manufacturing for raw shale gas produced from distributed, remote wells from both economic and environmental perspectives. © 2017 American Institute of Chemical Engineers AIChE J, 2017

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页岩气模块化甲醇生产：常规大规模生产与小规模分布式模块化工艺的技术经济和环境分析

本文介绍了四种典型的页岩气货币化选项的技术经济和环境比较分析，即常规页岩气处理，大规模甲醇生产，利用管道提供的页岩气的模块化甲醇生产以及考虑工厂搬迁的模块化甲醇生产。我们首先介绍四种气体货币化选项的页岩气供应模型。接下来，描述用于页岩气处理和由页岩气制造甲醇的工艺设计。我们使用从Marcellus，Eagle Ford和Bakken页岩中提取的原始页岩气开发了不同规模的页岩气处理和甲醇生产的详细过程模拟模型。在此基础上，对四个页岩气货币化方案进行了技术经济分析和环境影响分析，以在相同条件下系统地比较其经济和环境绩效。结果表明，模块化甲醇制造比常规页岩气处理在经济上更具竞争力，尽管它对环境的影响更大。此外，从经济和环境的角度来看，模块化甲醇制造要优于从分散的偏远井生产的原始页岩气的大规模甲醇制造。©2017美国化学工程师学会 结果表明，模块化甲醇制造比常规页岩气处理在经济上更具竞争力，尽管它对环境的影响更大。此外，从经济和环境的角度来看，模块化甲醇制造优于大规模的甲醇制造，该技术用于从分散的偏远井中生产的原始页岩气。©2017美国化学工程师学会 结果表明，模块化甲醇制造比常规页岩气处理在经济上更具竞争力，尽管它会带来更大的环境影响。此外，从经济和环境的角度来看，模块化甲醇制造优于大规模的甲醇制造，该技术用于从分散的偏远井中生产的原始页岩气。©2017美国化学工程师学会AIChE的Ĵ，2017年