【JST-073】Special thread for one-on-one discussion and exchange on air separation pipeline design and installation
Thread Content
This post was last edited by hxm2087 on 2015-4-21 at 18:24. Technical discussant: hxm2087. Specialization: Piping. My areas of expertise include the layout of air separation piping and equipment, as well as on-site construction and installation; I am quite familiar with these tasks. Daily or weekly online time: from Monday to Sunday, from 7 p.m. to 10 p.m. Work experience: Six years of on-site construction and installation work, four years of pipeline design work (PDMS and CAD are used frequently in this work; other pipeline software is hardly used). I prefer to discuss various issues in order to enhance both parties’ understanding of certain aspects related to air separation. By setting up an office here, I hope to have more exchanges on this topic with other people interested in this field. Whether the questions you raise can be answered by me or not, I will still respond to them. If there are aspects of your question that are not suitable for public discussion, you can communicate via private message. Other sea friends are also welcome to join the discussion! If you do not receive a satisfactory response here, you may post your question in the Air Separation Technology section or other appropriate forums to seek a more thorough resolution.
Give full support to the moderators’ work! If there’s time, I hope we can communicate more and improve together!
I’d like to ask about the air separation process. I work in electrical engineering, but I’m very interested in air separation. If you have time, could you explain it to me?:)
In simple terms, it is a set of industrial equipment used to separate the various gases in the air in order to produce oxygen, nitrogen, and argon. There are also the rare gases helium, neon, argon, krypton, xenon, radon, etc
As for process technologies, the main domestic providers are Hangyang, Kaikong, and Chuan Kong, while among foreign companies, the leading ones include Air Liquide, Linde, Praxair, and so on. The domestic air separation industry focuses on oxygen, nitrogen, and argon; the production of other types of gases is on a relatively smaller scale. Such production is mainly carried out by companies specializing in gases such as Yingde and Linde, as well as by coal chemical enterprises and steel manufacturers. Generally speaking, the oxygen production process can be detailedly divided into ten systems, namely the air compression system, air purification system, heat exchange system, refrigeration system, distillation system, safety and explosion prevention system, product compression and transportation system, heating and thawing system, instrument control system, and electrical control system. See: http://baike.baidu.com/view/655058.htm
Thank you, OP. I have dealt with Air Liquide and Linde as well. I’ll go check out the website you recommended. Thanks, I’m off to eat first
http://bbs.hcbbs.com/thread-938307-1-1.html http://bbs.hcbbs.com/thread-933101-1-2.html http://bbs.hcbbs.com/thread-933107-1-2.html http://bbs.hcbbs.com/thread-915261-1-2.html
:handshake Thank you, OP. I’ll study it carefully* and come back to ask you if I have any questions
Moderator: What instruments are used in air separation technology? What are the main technical features and instrument characteristics?
This post was last edited by hxm2087 on 2012-4-2 08:16. Hehe, I’ve never worked with instruments, so I know very little about this area. I’ll share what I know; there might be mistakes, so please feel free to correct me. As far as I can see, the instruments involved in air separation fall into three main categories: thermometers, flow meters, and pressure gauges. There may also be other types of instruments for different purposes, as different processes have varying requirements in certain aspects. Thermometers: Thermocouple and thermistor types are commonly used. The measurement range of oxygen separation thermometers is from -200°C to 600°C; in cases where high-pressure steam is used in oxygen separation processes and higher temperature levels are required, the upper limit of temperature can be even higher. Flow meters: Orifice plate flow meters, rotameters, and Anubis flow meters are the most common. Pressure gauge: Air separation pressure ranges from -0.1 Mpa to 10.0 Mpa. The pressure may vary in different regions and depending on the process; it could be higher or lower, primarily determined by the requirements of the specific process. Thermometers and pressure gauges are available in both local and remote types; among flow meters, rotor flow meters are mostly used in local installations, while orifice plates and Annubar sensors are typically used in remote setups. It’s just my personal opinion; I welcome any corrections.
What should be noted when assembling cold box panels? I hope the original poster will not hesitate to share their insights; thank you!