Nitrogen plugs for crude argon towers in small air separation unit

(a) assessment of porosity, inclusions and other defects According to the thickness of the test site to determine the size of the assessment frame, with the assessment frame to select the most serious defects in the detection area, the size of the defect, the different sizes of defects into different points, and then according to the number of points to assess the grade. (ii) Assessment of shrinkage and shrinkage defects Strips of shrinkage measured its maximum length, dendritic, feathery, sp...

The raw air is compressed to 0.50 MPa in an air compressor after passing through an air filter, cooled by a pre-cooling system, and then enters the molecular sieve adsorber for switching. After being pre-cooled and purified, the majority of the air eventually enters the fractionation column. The purification system has two molecular sieve adsorbers, one working while the other is regenerated (the large air separation unit uses the heating regeneration method) and the two adsorption drums work al...