The operation pressure of debutanizer was unstable since a light hydrocarbon recovery unit had been put into use.

某轻烃回收装置自投用以来,脱丁烷塔操一直不稳定。

By applying multivariable model predictive control (MPC) technology, the control performance of the gasoline debutanizer of fluid catalytic cracking unit can be improved.

多变量模型制技术应用于催化裂化汽油稳定塔的制，有助于提高稳定塔的制品质。