Nitrogen machine ash spraying phenomenon, also known as carbon molecular sieve pulverization, this situation is due to the carbon molecular sieve pressure is not tight or carbon molecular sieve loose, resulting in nitrogen machine powder black smoke, at this time the entire system needs to completely replace carbon molecular sieve. If the carbon molecular sieve is still added normally at this time, the carbon molecular sieve will continue to eject, and the consequences will be more and more serious, and the entire nitrogen pipeline system will have carbon molecular sieve powder. png" style="width: 750px; height: 750px;"  />

During the use of the nitrogen machine, it is hit or the equipment is moved, which causes structural problems of the adsorption tower, such as the dewelding of the adsorption tower pipeline, the outflow of carbon molecular sieve, and the loosening and pulverization of carbon molecular sieve. The substance sprayed out of the silencer generally has small particles, and it is necessary to check whether the particles are activated carbon or molecular sieve. Since activated carbon and molecular sieve are black solid particles, it is difficult to distinguish from the color, but their particle shapes are different.

If the activated carbon is sprayed out, then the problem is not very serious, we can remove the activated carbon filter, remove the activated carbon inside, check whether the activated carbon bottom screen is damaged, if there is damage, replace the new stainless steel wire mesh, and then install the activated carbon can operate normally. When filling activated carbon, try to fill the filter to prevent activated carbon from colliding with each other under the action of air flow to produce dust. If the spray is molecular sieve, then it is more troublesome to deal with, and the equipment needs to be overhauled. jpg" style="width: 500px; height: 375px;"  />

Nitrogen machine powder and ash spraying may also be caused by the leakage of the adsorption dryer at the front end of the nitrogen machine, which can be analyzed after various investigations and then repaired according to the problem point.

How to prevent the carbon molecular sieve powder in the nitrogen machine? Measures to prevent the pulverization of carbon molecular sieve in the nitrogen machine:

1, choose the right brand and reliable quality molecular sieve;

2, choose a reasonable bed arrangement, such as the arrangement of inert alumina layer, active alumina layer and then arrange the molecular sieve layer, can not only reasonably distribute the air flow, prevent impact, but also achieve the purpose of purification;

3, the loading bed layer should be packed, the more commonly used coconut pad compression and cylinder compression technology;

4, the burrs caused by welding inside the container should be polished and smooth, and there should be no warping phenomenon after the stainless steel screen is fixed.

5, design reasonable use of pressure and regeneration time.