求助高手 帮助看一下这段文章? The PetroFCC process starts with a uniquelydesigned FCC unit and is capable of producing a product slate of 35 lv-%propylene, 12 lv-% ethylene,20 lv-% butylenes, and 20 lv-% of benzene andparaxylene. This is a substantial increase in the yield of petrochemicals comparedto a conventional FCC unit. 查看更多5个回答 . 3人已关注