Management of cryogenic air separation equipment

1. Before filling with pearlite, the water accumulated on the foundation surface of air separation unit must be removed, dried with hot air, and all manholes shall be closed. 2. When filling pearlite, all containers and pipes in the cold box should be inflated and kept at 50kPa pressure, then slightly open the valve of each meter pipeline, and all thermometers should be electrified to check whether the thermometer cable is damaged during the filling process. 3. The filled pearlite shall not be mixed with combustibles. 4. When filling with pearlite, coarse mesh or pearlite pouring device should be set at the manhole on the top of the cold box to prevent whole bag pearlite from entering the cold box. 5. After the pearlite is filled, the manhole shall be sealed.

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 Separa...