The problem that salt accumulating on the top of fractionating column is solved by water-washing on line with good result.

• 介绍了大连石化公司三催化装置分馏塔结盐情况,对结盐现象进行了分析,通过采取在线水洗措施解决了塔顶结盐问题,取得了好的效果。