Analysis and improvement on liquefied gas tower of light hydrocarbon recovery unit

light hydrocarbon recovery unit at Nanchong has gone through triple technological transformation, but it is still imperfect, and the liquefied gas tower is hard to keep steady operation balance in summer. The tower is in conditions of ultra-high tower pressure, difficult operation, low yield and high cost. This paper explored and analyzed the problems of the unit, and proposed a solution to the problems.