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The effect of greenhouse gas policy on the design and scheduling of biodiesel plants with multiple feedstocks

机译：温室气体政策对多种原料生物柴油装置设计和调度的影响

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摘要

With the increasing attention to the environmental impact of discharging greenhouses gases, there has been a growing public pressure to reduce the carbon footprint associated with the use of fossil fuels. In this context, one of the key strategies is the substitution of fossil fuels with biofuels such as biodiesel. The design of biodiesel production facilities has traditionally been carried out based on technical and economic criteria. Greenhouse gas (GHG) policies (e.g., carbon tax, subsidy) have the potential to significantly alter the design of these facilities, the selection of the feedstocks, and the scheduling of multiple feedstocks. The objective of this article is to develop a systematic approach to the design and scheduling of biodiesel production processes while accounting for the effect of GHG policies in addition to the technical, economic, and environmental aspects. An optimization formulation is developed to maximize the profit of the process subject to flowsheet synthesis and performance modeling equations. Furthermore, the carbon footprint is accounted for with the help of a life cycle analysis (LCA). The objective function includes a term which reflects the impact of the LCA of a feedstock and its processing to biodiesel. A multiperiod approach is used to discretize the decision-making horizon into time periods. During each period, decisions are made on the type and flowrate of the feedstocks, as well as the associated design and operating variables. A case study is solved with several scenarios of feedstocks and GHG policies.
机译：随着人们日益关注排放温室气体的环境影响，越来越多的公众压力要求减少与使用化石燃料有关的碳足迹。在这种情况下，关键策略之一是用生物燃料（例如生物柴油）替代化石燃料。传统上，生物柴油生产设备的设计是根据技术和经济标准进行的。温室气体（GHG）政策（例如碳税，补贴）有可能显着改变这些设施的设计，原料的选择以及多种原料的调度。本文的目的是开发一种设计和调度生物柴油生产过程的系统方法，同时考虑技术，经济和环境方面的温室气体政策效果。开发了一种优化公式，以使流程的收益最大化，这取决于流程综合和性能建模方程式。此外，借助生命周期分析（LCA）来解决碳足迹问题。目标函数包括一个术语，该术语反映了原料的LCA及其对生物柴油的加工的影响。多周期方法用于将决策范围离散到各个时间段。在每个阶段中，都会根据原料的类型和流量以及相关的设计和操作变量来做出决定。案例研究通过多种原料和温室气体政策解决。

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