The new type combined guide valve trays have been developed on the basis of old ones, and they are composed of rectangular and trapezoidal guide valves, assembling in appropriate proportion.

• 新型组合导向浮阀塔板是在导向浮阀塔板基础上以矩形导向和梯形导向浮阀按照一定比例配比组合而成,在提高轻油收率方面效果明显。