An air separation plant separates atmospheric air into its primary components, typically nitrogen and oxygen, and sometimes also argon and other rare inert gases.  The most common method for air separation is fractional distillation. Cryogenic air separation units (ASUs) are built to provide nitrogen or oxygen and often co-produce argon. Other methods such as membrane, pressure swing adsorption (PSA) and vacuum pressure swing adsorption (VPSA), are commercially used to separate a single component from ordinary air. High purity oxygen, nitrogen, a...

1. Soda Soda is a transliteration of soda, and its chemical formula is Na2CO3. Scientific name is sodium carbonate, commonly known as soda, also known as soda or soda powder. With crystal water is called sodium carbonate hydrate. Anhydrous sodium carbonate is white powder or fine particle, soluble in water, and the aqueous solution is alkaline. It has a strong hygroscopicity, can absorb water in the air and form a hard block. Of the three sodas, sodium carbonate is the most widely used. It is a very important chemical product and an important raw ...

Packed tower is one of the most important equipments in chemical industry, petrochemical industry and oil refining. First, let's understand the structural characteristics of the packed tower: Packing tower is a kind of mass transfer equipment which uses the packing in the tower as the contact component between gas and liquid. The body of the packed tower is a vertical cylinder, and the bottom is equipped with a packing support plate. The packing is placed on the support plate in a disorderly or integral way. A packing pressing plate is installe...