Liquefied air separation FAQ

How does the energy of air in air separation equipment change after isothermal compression?

Cavitation phenomenon of centrifugal liquid oxygen pump

Gas blockage of centrifugal liquid oxygen pump

How to determine whether the air separation equipment oxygen generator cold enough?

In order to ensure the stable operation of the distillation column, the in and out material and its state of the distillation column needs to meet the material balance, component balance and energy balance. The main cooling liquid oxygen surface is an important indicator of whether the cooling capacity of the air separation plant is balanced or not. When the cooling loss of the unit is greater than the cooling capacity, the moisture content of the air entering and leaving the column (the liquid content in the saturated air) will be reduced, and the nitrogen to be condensate in main cooling needs to be condensed, the evaporation of liquid oxygen will also increase, and the surface of liquid oxygen will decrease. On the contrary, when the cooling capacity is greater than the cooling loss of the unit, the moisture content of the air entering the lower column will increase, and the amount of nitrogen to be condensed in the main cooling system will decrease, and the liquid oxygen surface wi

How to choose the form of drive for the compressor of a large air separation plant?

The lower and upper columns are the main equipment in the distillation system of cryogenic oxygen air separation plant. The lower column and the upper column separate the components of the mixture gas into different components with the required purity by using the different boiling points. The upper and lower columns are of cylindrical structure. The lower column is equipped with multi-layer sieve plates, and the sieve plate is equipped with overflow bucket. There is an overflow baffle with dense holes. The upper column is equipped with regular packing and liquid distributor. In the distillation process of the lower column, the liquid flows through each sieve plate one by one from top to bottom. Due to the effect of overflow weir, a certain height of liquid level is created on the pedal. When the gas passes through the small hole of sieve plate from bottom to top, it contacts with the liquid and produces bubbles, which increases the gas-liquid contact area and makes the heat and mass e

A user of DEAR air separation reflected that when the air separation plant was put into operation, a large liquid nitrogen storage tank was equipped for emergency backup when the air separation was stopped or export of liquid products. The value of oxygen content in nitrogen product is designed to be less than 3ppm (i.e., < 3 ×10-6) due to the high requirement of users for nitrogen purity. But in fact, the oxygen content of liquid nitrogen in the tanks had been found more than 5ppm. The substandard purity of liquid nitrogen not only affects the export of products, but also directly affects the emergency backup of liquid nitrogen backup system.

What is the role of centrifugal compressors in air separation plants?

Liquid air separation equipment is an air separation device that directly produces liquid oxygen, nitrogen and other liquid products. Some liquid air separation equipment not only produces liquid products, but also produces a small amount of gas products.

What are the types of water cooling towers for air separation equipment?

Why is the majority of the insulation materials filled in the insulation box of the air separation equipment made of pearl sand?