Propylene recovery at a rate above 85% from the non-condensable gas released from polypropylene plant was carried out with membrane separation technique.
应用膜分离技术，回收聚丙烯装置排空不凝气中的丙烯，回收率在85%以上。
By modifying, the separation zone behind the shaft and turn loss at upwind side are all reduced. Modifying inlet maintains high pressure recovery, and the distortion index is reduced by 74% at most.
改型进气道减小了输出轴背风侧的分离和迎风侧的转弯损失，使其既保持了高总压恢复系数，且畸变指数最大降低了74%。
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