pro2运行问题？ for most systems, simsci recommends using the i/o algorithm. when more than one algorithm can be used to solve a problem, the i/o algorithm will usually converge the fastest. the i/o algorithm can be used to solve most refinery problems, and is very fast for solving crude columns and main fractionators. the i/o algorithm also solves many chemical systems, and when possible should be the first choice for systems with a single liquid phase. the sure algorithm in pro/ii is the same time proven algorithm as in process. this algorithm is particularly useful for hydrocarbon systems where water is present. it is the best algorithm to solve ethylene quench towers which have large water decants in the upper portion of the tower. the sure algorithm is also appropriate for many other refining and chemical systems. 以上是从手册中找的, "sure" 应该是适合水存在的体系. 好象楼主既改变抽提位置又抽提量, algorithm不允许. 是否重新考虑casestudy 变查看更多
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