内回流是分馏塔内借助内部冷却盘管使蒸气冷凝而产生的液体。
Induced reflux is liquid formed within a fractionation tower by condensation of vapors by means of an internal cooling coil.
控制合适的操作条件，在大油气管线进分馏塔入口处增加蒸汽环管，可以有效防止结焦。
Coking at the inlet of large gas line to fractionator has been effectively prevented by setting up steam circle pipes under appropriate operation conditions.
介绍了气体分馏-聚丙烯工程项目的由来、生产规模及生产方法，从设计角度阐述了气体分馏-聚丙烯工艺流程、设备及配管的设计特点。
The integrated unit of fractionation and polypropylene was introduced. The design characteristics in the process flow, equipment and piping of the unit were stated.
介绍了气体分馏-聚丙烯工程项目的由来、生产规模及生产方法，从设计角度阐述了气体分馏-聚丙烯工艺流程、设备及配管的设计特点。
The integrated unit of fractionation and polypropylene was introduced. The design characteristics in the process flow, equipment and piping of the unit were stated.
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