When using sieve plate towers for distillation, the liquid must be covered with a certain height of liquid layer in order to exchange heat and mass with the rising gas. In contrast, a packed tower only needs to wet the packing surface to form a liquid film for heat and mass exchange. Therefore, the liquid holding capacity of a packed tower is much smaller than that of a sieve plate tower, and the packed tower can also establish distillation conditions more quickly.
The Henan Province Air Separation Engineering Technology Research Centre, based on Dear Air Separation Design Institute, was established in 2018. The centre brings together a number of well-known experts and technical elites in the air separation industry, providing a platform for technological innovation, project development and sharing of results in design small air separation unit, large air separation unit and liquid air separation plant.
