What is the oxygen and argon extraction rate of everyone’s air separation units?
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We are 6000 air separation, with expanded air entering the upper tower for external compression. Processed air volume: 33,800; expanded air volume: 5,150; bypass flow: 1,800; oxygen production: 6,100; liquid oxygen production: 140 (converted to gaseous form). Argon system data: crude argon volume 6500, argon fraction 8.5%, process argon volume 205, purified argon output 200. Oxygen purity is 99.90% and argon purity is 99.999%, both considered to be 100%. Oxygen extraction rate: 93.3% Helium extraction rate: 67.1% Last edited by wlmwq on 2009-3-6 17:16]
Like ordinary argon extraction systems, the oxygen extraction rate in a distillation tower can reach 96%–98%, while the overall extraction rate of the entire system depends on the process flow. With a device like yours, without liquid, the extraction rate is low.
60% is already good for domestic use, but I can achieve over 90% here!
To add, the extraction efficiency is 90% for argon and over 99% for oxygen!
Upstairs, in your process, the expanded air is fed into the lower tower, right?
Hehe. Generally speaking. The oxygen extraction rate of the expanded air entering the lower tower can exceed 99%. The main losses are: 1. The oxygen purity cannot be 100%; 2. A portion of the liquid oxygen must be periodically removed to prevent the accumulation of hydrocarbons in the main cooler. The argon recovery rate can reach 93–95%. It mainly depends on the operating conditions; if going up the tower, it needs to be lower. The argon recovery rate should be 60-70%
The argon extraction rate when expanded air enters the lower column can reach around 90%, while it is lower, at about 72%, when expanded air enters the upper column
We are Air Liquide’s plant; the oxygen extraction rate is currently around 93%, while the argon extraction rate is about 73%.
Upstairs, we’re very close； What’s your process?
Expanded air and liquid air enter the upper and lower towers! Hehe,
We do not produce argon; the current extraction rate is less than 90%
An extraction rate of 67% for argon is already quite good; this is the level achieved by domestic products!
The argon recovery rate is closely related to the process and the liquid product. The process of feeding expanded air into the lower column typically results in a high argon recovery rate. In air separation units with a large amount of liquid nitrogen products, the argon recovery rate is usually affected. An increase in the nitrogen pressure at the lower column also reduces the argon extraction rate.
Our 48,000 air separation unit has an argon extraction rate of 54.3%.
Our domestically produced Hangyang equipment achieves an oxygen extraction rate of over 99%, with an argon extraction rate of 90% as well. It also runs very stably.