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焦化装置是炼油厂轻、重污油脱水回炼的关键装置，在当前提质增效的大背景下，焦化装置回炼全厂污油的作用也越来越大。焦化装置焦炭塔系统、冷焦水系统、污油回炼系统，因间歇操作，被称为焦化装置的间歇系统。受当前实际的回炼流程约束，污油性质复杂，含水量变大等实际情况，存在着一系列的问题，放空冷却塔底泵（P-110A）汽阻影响放空塔顶冷回流的建立；污油带水严重，脱除不干净，影响装置污油回炼的进度；因此，我们针对存在的实际问题，进行了操作的调整和优化。“,”The coking unit is the key device for the dehydration and resmelting of light and heavy dirty oil in the refinery. Under the background of the premise of quality and efficiency improvement, the role of the coking unit in the resmelting of the whole plant dirty oil is also becoming more and more important. Coking unit coke tower system, cold coke water system, dirty oil back smelting system, because of intermittent operation, known as the intermittent system of coking unit. Restricted by the current actual reprocessing process, the complex nature of the dirty oil and the increasing water content, there are a series of problems. The vapor resistance of the bottom pump of the vent cooling tower (P-110A) affects the establishment of the cold reflux at the top of the vent cooling tower. The dirty oil carries water seriously, and the removal is not clean, which affects the progress of the dirty oil reprocessing of the unit. Therefore, in view of the existing practical problems, we have carried on the adjustment and optimization of the operation.