What are the classifications of welded steel pipes in small air separations?

Apr 20, 2022

Author: DEAR AST

The specification range of commonly used welded steel pipes is 6 to 150mm nominal diameter

Seamless steel pipes, which are also the most used in industrial pipelines, have the largest variety of specifications.

The types of steel pipes are divided into two main categories: seamless steel pipes for fluid transport and seamless steel pipes with special features. The former is a steel pipe commonly used in process pipelines, the latter, such as boiler tubes, cracking furnace tubes and heat exchangers with steel tubes.

Steel pipes can be divided by material: carbon seamless steel pipes, chromium-molybdenum seamless steel pipes and stainless, acid-resistant seamless steel pipes.

Steel pipes can be divided by nominal pressure: low pressure (0 ≤ 1.0MPa), medium pressure (1.0 < 10MPa =, high pressure (≥ 10MPa) three categories.

The process piping of small air separation unit is commonly used in seamless steel pipes for fluid transportation, mainly divided into carbon seamless steel pipes and high pressure seamless steel pipes. Carbon seamless steel pipes are widely used for conveying various media that are not corrosive to steel, such as conveying steam, oxygen, compressed air, oil and oil and gas. High pressure seamless steel tubes are mostly used in petrochemical plants, commonly used to transport raw material gas, hydrogen and nitrogen, synthesis gas, water vapour, high pressure condensate and other media.

Dear air separation production design and welding of various steel pipes oxygen piping, high quality to meet the application of small air separation unit, to protect the design and installation and safe operation of small air separation units, large air separation units and liquid air separation plants.

山东传洋集团20000

Safety measures for oxygen centrifugal compressors in large air separation units

What are the different types of steel plate coil tubes in large air separation units?

Clogging of large air separation unit crude argon towers Downward shift of the small air separation unit argon-enriched zone

DEAR Air Separation Solve YourWhat are the classifications of welded steel pipes in small air separations?You can also learn about otherSmall air separation FAQ about DEAR Air Separation, and solve the problem for you.

Didn’t find the problem encountered?
Please contact live chat or email for quick help.

Chat online service@dearast.com

Related FAQ

More Related FAQ

What is the working principle of air cooling tower?

The air cooling tower is the core equipment of the air separation precooling system, which is mainly used to cool and wash the high-temperature compressed air discharged from the air compressor, provide qualified low-temperature gas source for subsequent molecular sieve purification and cold box rectification, and ensure the stable operation of the whole unit. The air cooling tower adopts the countercurrent packing heat exchange structure, the tower is filled with high-efficiency packing, and the top is equipped with a spray device and a wire mesh demister. During operation, the high-temperature compressed air at 80 to 100 ℃ discharged by the air compressor enters from the bottom of the tower and flows from bottom to top; The cooling water is the normal temperature make-up water and the low-temperature chilled water prepared by the water-cooling tower, which is sprayed from top to bottom from the tower top, and the air and water are fully contacted in reverse for heat exchange. Under t

2026.11.12

Regulation of liquid nitrogen throttle valve

Regulation of liquid nitrogen throttle valveThe opening of the liquid nitrogen throttle valve not only affects the reflux ratio of the upper tower, but also affects the reflux ratio of the lower tower. When the opening is increased, the reflux ratio of the upper tower increases, while the reflux ratio of the lower tower decreases, the purity of the nitrogen in the upper tower increases, and the purity of the oxygen enriched night sky in the lower tower increases. However, after the opening is over, the purity of the liquid nitrogen decreases, and the reduction of the reflux ratio of the upper tower is also detrimental to the improvement of the purity of the liquid oxygen. Therefore, an equilibrium point should be found for the opening of the liquid nitrogen throttle valve. We can generally use the purity difference between liquid nitrogen and gas nitrogen to judge whether the opening is appropriate. Generally, the purity of the sprayed liquid nitrogen is equal to that of the upper towe

2026.11.11

Related Products

More Related Products