Sustainable Production of VCM from Ethylene through ...

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GRØN DYST 2014 Technical University of Denmark

Sustainable Production of VCM from Ethylene through a Hierarchal Approach
Paper
Author:A. Gørløv (DTU Chemical and Biochemical Engineering, Technical University of Denmark, Denmark)
C. Bach (DTU Chemical and Biochemical Engineering, Technical University of Denmark, Denmark)
P. Hammershøi (DTU Chemical and Biochemical Engineering, Technical University of Denmark, Denmark)
Date: 2014-06-27     Track: Main     Session: 1

A systematic hierarchal decomposition method is applied to design a sustainable and environmentally friendlier plant for production of VCM from the raw materials ethylene and chlorine. The method consists of 12 sequential tasks, which take into account all stages of conceptual design. Tasks 1-4 cover the consideration of qualitative aspects of the process flowsheet and preliminary calculations. Tasks 5-8 determine the detailed process simulations, equipment sizing, costing, economic evaluation, sustainability and LCA assessment of the designed process. In task-9 (the economic analysis), the base case design is investigated for improvements with respect to heat integration and process optimization. In the final task-12, a sustainability and LCA analysis is performed to assess the environmental impact of the process design. The analyses are performed on the key sustainability and LCA measures such as sustainability metrics for environment, economic and social; carbon footprint; safety index. In addition, a commercial simulator is used for process simulation (for verification of design), ICAS for property prediction and analysis of design options, and ECON for cost and economic analysis, which is based on the Guthrie method. The 12-tasks design method helped to perform the process design related work systematically and efficiently, where first design decisions were based on collected information and then verified through simulations. This procedure can be applied to design and/or analysis for new or existing chemical or biochemical processes.