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在聚合物生产中用膜分离回收循环丙烯ＤＳＭ将使用膜分离和Ｖａｐｏｒｓｅｐ工艺在其聚丙烯工厂回收循环的丙烯单体和氮气。该系统投资回收期约１年，每年可节省丙烯和氮气价值约１００万美元。聚合物颗粒以氮气清洗脱去未反应单体和其它易挥发的烃，此时放出的气体主要是...
Recycling Propylene Monomers with Polymer Separation by Membrane Separation DSM recycles recycled propylene monomer and nitrogen at its polypropylene plant using membrane separation and Vaporsep processes. The system has a payback period of about 1 year and can save about $ 1 million annually in propylene and nitrogen. The polymer particles are purged with nitrogen to remove unreacted monomer and other volatile hydrocarbons, the gas released at this time is mainly ...