Air separation plant and principle

A steel-making user of DEAR air separation set up their air separation plant in the early stage. At that time, due to the small amount of nitrogen required by the process and in order to reduce the investment, the molecular sieve adsorption purification process of 1:1 oxygen and nitrogen was adopted. There was no water chiller equipped, and a large amount of crude nitrogen was extracted to the water cooling column to reduce the temperature of cooling water.

In order to ensure the normal operation of the compressor and extend its service life, besides regular maintenance and overhaul, daily maintenance and inspection are very important. In addition to using various instruments to detect the operation changes of the compressor, we usually use the methods of seeing, listening and touching to check. But these three methods are not isolated, but interrelated. One of them alone cannot check whether the compressor is running. Look -- with the method of look, we can see whether the parts of each transmission part are loose and whether the lubrication condition of each friction part is good; whether the cooling efficiency of cooling water and intermediate cooler of air cylinder at all levels is good and whether the flow of cooling water is smooth; whether the air cylinder and cooler at all levels are pouring; whether there is air leakage or oil leakage at all joints; Listen -- the method of listening can be used to correctly judge the operation...