Study Of Life Cycle Assessment System Design For Ionic Liquids Products

As the pillar industry of national economy in the country, chemicalindustry has made important contributions to the increasing development ofpeople’s material needs also caused serious environmental damage.Traditional singled economical oriented goal of chemical production modelcan’t adapt to the needs of the development of current era. Recently, peoplehave been increasing interest in environmental protection. Not only focusingon the control or cleanup of waste and hazardous materials, It emphasizesredesigning industrial products and processes to reduce or eliminate thehazards of products and by-products, quantities of waste, and energyconsumed, often at reduced total cost.Based on the theoretical study of life cycle assessment and life cycleproduct design, this paper studies the current popular “green solvents”-ionicliquids with multi-disciplinary knowledge. The life cycle of ionic liquids,from raw material acquisition through production, use, end-of-life treatment,recycling and final disposal is analyzed. The life cycle assessment systemdesign of ionic liquids is fundamentally established. To help the developmentof ionic liquid products and to help the designers design the good productswith low price, the greenness of ionic liquids is discussed and the ionic liquidsproduction and process are optimized.In conjunctions with life cycle assessment and life cycle cost analysis,this paper finds the relative costs of each environmental factors as well as themutual relation between environmental performance and economicperformance. To support the selected scenarios of ionic liquids production andprocess, the chemical products life cycle cost model is established.Last but not least, the cellulose dissolved processes with organic solventsN-methyl-morpholine-N-oxide (NMMO)/H2O and ionic liquid1-butyl-3-methylimidazolium chloride ([BMIM]Cl) is discussed as an example. The optimized scenario is selected which integrated with analysis ofenvironmental performance and economic performance in their dissolvedprocesses.