In the technology transform of the gas fractionation units, CTST in the case of its shell fixedness replaced float trays.

• 该塔板在气体分馏装置扩产改造中已经成功应用,在原塔外壳不变的条件下,仅用CTST塔板替换原浮阀塔板,改造后生产能力由原来的12671。