Für die Gestaltung nachhaltiger Produktionsverfahren in allen Branchen der Prozessindustrie sind neben sozialen und ökonomischen auch ökologische Aspekte von entscheidender Bedeutung. Vorgestellt wird ein Ansatz auf Basis eines 3-Ebenen-Modells, der die Analyse von Produktionsprozessen in Mehrproduktanlagen im Hinblick auf Energie-und Ressourcenverbrauch verbunden mit ökologischen Betrachtungen ermöglicht sowie die Identifizierung und Quantifizierung von Verbesserungspotenzialen unterstützt. Der Ansatz ist modular aufgebaut und basiert auf einer Stoffstromnetzmodellierung der betrachteten Prozesse.For a sustainable process design in the chemical, specialty chemical, and pharmaceutical industries, ecological aspects alongside the social and economic ones play a significant role. An approach based on a three level model is presented that allows an analysis of production processes in multi-product plants with respect to consumption of energy and resources combined with ecological assessment. The approach has a modular structure and builds on a material flow modeling of the assessed processes.

Eco-Balance Assessment of Ionic Liquids as Acid Catalysts in TransesterificationsIonic Liquids may act as homogeneous catalysts for transesterification processes. In contrast to conventional catalysts the ionic liquid may be separated after reaction and recycled. This study investigated the ecological effect of changing from sulfuric acid as catalyst to an ionic liquid. Three different eco-balance approaches have been applied. The EHS method proved to be the most suited tool to assess the ecological potential of process alternatives in the conceptual process design phase. Keywords

The integration of innovative equipment technologies in production processes offers efficiency potentials with regards to energy and resource demand as well as investment and operating costs. For the estimation of these potentials, a sufficiently detailed database is necessary as well as the possibility to consider particular boundary conditions of the production process, infrastructure of the production site, and the overall plant design. A structured concept for the selection of suitable equipment technol-ogies and sizing rules for the design of the equipment for a desired process task are presented in this review. The combination with an appropriate modeling approach allows a holistic assessment of technically feasible solutions to quantify economic and ecological efficiency potentials of the equipment technologies. The application of this concept is demonstrated on the task of a typical heat transfer problem in the special chemicals sector.

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