Air Products Air Separation Unit Separation equipment process
- Air separation equipment process Freezing method to remove moisture and CO2. During the cooling process of air, moisture and CO2 are precipitated and frozen in the heat exchanger channel; after a certain period of time, the channel is switched, and the frozen impurities are taken away by the reflux nitrogen gas. According to the type of heat exchanger, it is divided into cold storage and plate-fin switching heat exchanger. This method has frequent switching actions, complex startup operations, high technical requirements, and an operating cycle of about 1 year;
- The air separation equipment process is based on the molecular sieve adsorption purification process. Before the air enters the main heat exchanger, the impurities have been removed by the adsorber. The long switching cycle of the adsorber greatly simplifies the operation, and the amount of pure nitrogen product is no longer limited by the reflux gas volume requirements. The operating cycle can reach two years or more, and it is increasingly widely used.
FAQ:
1. What is a small air separation unit?
A small air separation unit is a device used to separate different gases (such as oxygen, nitrogen, argon, etc.) from the air. It usually works through cryogenic fractionation or membrane separation technology, and is suitable for oxygen and nitrogen supply in medical, industrial, laboratory and other fields.
2. What is the working principle of a small air separation unit?
A small air separation unit liquefies the gas in the air by cooling the air to a low temperature. The liquefied gas is then separated by a distillation tower, and oxygen and nitrogen are separated according to their boiling points. By adjusting the operating conditions, oxygen, nitrogen or argon can be efficiently separated and purified.
3. What are its main applications?
Small air separation units are widely used in the following fields:
Medical industry: Provide high-purity oxygen supply to patients.
Electronic manufacturing: Provide pure nitrogen and oxygen for electronic product manufacturing.
Food packaging: Used for controlled atmosphere packaging to extend the shelf life of food.
Metal smelting: Provide nitrogen for metal processing and heat treatment processes.
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