PROCESS SIMULATION AND SUSTAINABILITY ASSESSMENT DURING CONCEPTUAL DESIGN OF NEW BIOECONOMY VALUE CHAINS
文献类型: 会议论文
第一作者: Roy Nitzsche
作者: Roy Nitzsche 1 ; Maik Budzinski 2 ; Arne Gr?ngr?ft 1 ; Stefan Majer 3 ; Franziska Müller-Langer 1 ; Daniela Thr?n 4 ;
作者机构: 1.Deutsches Biomasseforschungszentrum DBFZ
2.Helmholtz Centre for Environmental Research UFZDBFZ, Torgauerstr. 116, D-04347 Leipzig
3.Deutsches Biomasseforschungszentrum DBFZ Contact: stefan.majer@dbfz.de
4.bHelmholtz Centre for Environmental Research UFZDBFZ, Torgauerstr. 116, D-04347 Leipzig
关键词: biorefinery;economics;life cycle assessment (LCA);lignin;biomaterial
会议名称: European biomass conference
主办单位:
页码: 1723-1726
摘要: To support process and product developers, a set of tools for the assessment of technical, social andenvironmental sustainability have been developed. The tools can be applied on process and value chain level. Thesemethods and tools cover i) a concept approach for new biorefinery products and processes based on processsimulation, integrating economic and environmental optimization ii) a social Life Cycle Assessment method and iii)the assessment of the eco-efficiency and iv) an indicator-based tool for monitoring the sustainability degree ofselected bio-based product portfolios. The results presented here focus on a biorefinery concept to convert 400,000t DM/a (? 250 MW) of beech wood into chemicals and fuels. A model was simulated with Aspen Plus? v8.0including the process steps pre-treatment, enzymatic hydrolysis, alcoholic fermentation, olefin dehydration andbiogas generation and upgrading. Mass and energy balances showed that 41,600 t/a polymer-grade ethylene, 58,520t DM/a organosolv lignin, 38,400 t/a biomethane and 90,800 t DM/a hydrolysis lignin can be produced with a totalenergy efficiency of 87.1%. A discounted cash flow analysis indicated that, despite heat integration and optimizedenergy recovery, the biorefinery concept is not yet profitable. However, the economic results are greatly sensitiveregarding various assumptions, in particular in terms of the prices for beech wood, ethylene and organosolv lignin.The collaborative study was conducted by DBFZ and UFZ taking into account various activities of the BioEconomyCluster in Central Germany.
分类号: s216
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