What are the characteristics and requirements of oxygen piping for liquid air separation plant?

Mar 05, 2026

Author: DEAR AST

The oxygen piping of liquid air separation plant has the following characteristics:

One, high oxygen purity, the purity of oxygen produced by the liquid air separation plant ≥ 99.6%.

Two, is the oxygen transport pipeline pressure, high pressure oxygen operating pressure at 8.77MPa.

Third, is with the general characteristics of gas piping, the local airflow speed is fast, reaching 200 m / s.

According to the characteristics of the oxygen pipeline requires that

The appearance of the pipeline component parts is inspected before use, and its surface is free of cracks, shrinkage, slag, folding, heavy skin and other defects, and has product identification.

Second, the key alloy composition of the main body of the oxygen pipeline components, according to the design requirements for spectral analysis or other methods of semi-quantitative analysis sampling, and make a good mark.

Third, the oxygen pipeline storage and transportation process, shall not contact with non-alloy steel, low-alloy steel pipeline components, to prevent stainless steel pipeline carburization.

Fourth, the valves of oxygen pipeline should be separately placed and liquid test pressure and well marked, this batch of valves for oxygen pipeline special.

The chlorine ion content of the water used for testing the valves on the oxygen pipeline shall not exceed 25 PPM.

Therefore, the quality and installation of oxygen piping in the liquid air separation plant should be paid extra attention to, Dear Air Separation liquid air separation plant and oxygen piping are strictly enforced process specifications, piping and small air separation unit installation to ensure high quality requirements.

沼气提纯设备-40000m³D-SM

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