Small air separation FAQ

In the condensation evaporator the liquid oxygen is heated to evaporate and the gas nitrogen is cooled and condensed. Both the liquid oxygen and the gas nitrogen are in a saturated state. If the saturation temperature of nitrogen is lower than the saturation temperature of oxygen at the same pressure, the purpose of condensing gas and nitrogen with liquid oxygen cannot be achieved. For this reason the heat transfer temperature difference in the condensing evaporator must be established by the pr...

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...

  The cavitation of centrifugal pumps is very harmful. It causes great stress on the surface of the impeller and also reduces the head of the pump of small air separation unit, increases the power and reduces the efficiency. Therefore, measures should be taken in the process of use to avoid cavitation as far as possible. In order to avoid cavitation of small air separation unit, in the process design, should make the liquid into the pump before a certain degree of subcooling, while the pum...

Before installing pipe , check the orientation of the container orifice, the orientation of the valve inlet and outlet is correct. The pipe fittings should be thoroughly cleaned ten net and strictly degreased, while opening the welding bevels etc. The welded pipe must be brushed with clean stainless steel wire for a very short time before welding. In order to reduce the cold box pipe welding mouth, can be prefabricated in a clean plant, and later for the final distribution. Piping principles, f...

(1) The base of the two supports must be on the same level, ensuring that the 4 mark lines on the outside of the vessel's simplified orientation at both ends are level (2) Horizontal adsorber movable support: after the installation level is adjusted, the first nut on the support is tightened and then backed up one turn, then locked with the second nut (3) After the horizontal adsorber is in place, the level of its internal orifice plate <10mm is tested to confirm the level of the marker bar...