Abstract Propylene glycol can be produced from the hydrogenolysis of glycerol. If hydrogen comes from a renewable source, the produced propylene glycol can be considered completely renewable. The objective of this work is to perform a technical and economic evaluation of a propylene glycol production process which uses glycerol as the main raw material. Two possibilities regarding the hydrogen source are explored: it may come from an external source or be produced locally. It is shown that the break-even price of the partially renewable propylene glycol is lower than the market price of propylene glycol, which indicates that this process is economically viable. It is also shown that the price of hydrogen produced via steam reforming is not competitive with its price if produced by other sources. Consequently, the fully renewable propylene glycol production process yields a lower profit, but it is still viable and depends on the market.

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来自甘油的丙二醇：工艺评估和盈亏平衡价格确定

摘要 丙三醇经氢解可制得丙二醇。如果氢气来自可再生资源，则生产的丙二醇可以被认为是完全可再生的。本工作的目的是对以甘油为主要原料的丙二醇生产工艺进行技术经济评价。探索了关于氢源的两种可能性：它可能来自外部来源或本地生产。结果表明，部分可再生丙二醇的盈亏平衡价格低于丙二醇的市场价格，表明该工艺具有经济可行性。还表明，通过蒸汽重整生产的氢气的价格与其由其他来源生产的价格相比没有竞争力。最后，