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A Total Site Synthesis approach for the selection, integration and planning of multiple-feedstock biorefineries
Computers & Chemical Engineering ( IF 4.3 ) Pub Date : 2018-09-08 , DOI: 10.1016/j.compchemeng.2018.09.003
Konstantinos A. Pyrgakis , Antonios C. Kokossis

Biorefineries promote promising and exciting routes to exploit biomass and organic resources into a wide range of fuels and chemicals. Value chains include multiple, complex and competitive pathways that may lead to numerous intermediates and end-user chemicals. Process and path integration are critical prerequisites for sustainable production as biorefineries are challenged to compete with well-developed and mature fossil-based multiple-product industries. The access of biomass adds further challenges as regional supplies remain volatile, are time-variant and differ both in composition and volume. Conventional integration methods, by means of Total Site Integration, are unsuitable for screening as production capacities and product portfolios represent degrees of freedom. This paper introduces a new concept and novel representations able to cope with the new challenges by simultaneously searching for product portfolios and using energy integration. The approach leads to mathematical models formulated as optimization problems that could be reliably solved without practical limitations on the number of products, feedstocks and pathways. The methodology is illustrated in small and medium-size problems before it is finally demonstrated on a real-life lignocellulosic biorefinery with 21 candidate paths and 6 different feedstocks.



中文翻译:

用于多原料生物精炼厂的选择,整合和规划的全站址综合方法

生物精炼厂提倡有前途和令人振奋的途径,以将生物量和有机资源开发为多种燃料和化学品。价值链包括多种,复杂和竞争性的途径,可能会导致大量的中间体和最终用户使用化学药品。流程和路径整合是可持续生产的关键先决条件,因为生物精炼厂面临着与发达和成熟的以化石为基础的多种产品行业竞争的挑战。由于区域供应保持波动,时变并且在组成和数量上都不同,生物质的获取增加了进一步的挑战。由于生产能力和产品组合代表了自由度,因此通过总站点集成的传统集成方法不适用于筛选。本文介绍了一个新概念和新颖的表示形式,它们可以通过同时搜索产品组合和使用能源集成来应对新挑战。该方法可以将数学模型描述为优化问题,可以可靠地解决这些问题,而对产品,原料和途径的数量没有实际限制。该方法在中小型问题中得到了说明,然后在具有21条候选路径和6种不同原料的现实生活中的木质纤维素生物精炼厂中得到了最终证明。

更新日期:2018-09-08
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