What is meant by the phenomenon of "gas plugging" and "cavitation" in centrifugal liquid oxygen pumps for DEAR Liquid air separation unit and what are the hazards?

  It is recommended to degrease aluminium parts (pressure vessels, valves, pipelines) with perchloroethylene or trichloroethylene solvents, and carbon tetrachloride (CC14) solvents are strictly prohibited. The solvent must be oil-free and degreased, and decomposed solutions are not allowed. Organic solutions are not suitable for assemblies with rubber, plastic or organic coatings. Organic solvents are toxic and flammable and should be used with care.   In addition t...

What are the internal structures of the fractionator of the air separation unit?