export@jo-radiant.com   +8615900698841

 export@jo-radiant.com

 +8615900698841

 Follow Us            

图片展示
搜索

Contact Us

 Room 8608, Floor 6th, No.841 Laolu

      Highway, Shanghai, P.R. China

 

 export@jo-radiant.com

 

 +8615900698841

 

What Is The Extraction Rate Of Oxygen?

Time:2023-08-14 11:11:14

When the air separation method is used to prepare oxygen, it is always desirable to separate as much of the oxygen in the process air as a product as possible. In order to evaluate the completeness of separation, the concept of oxygen extraction rate is introduced.


The oxygen extraction rate is expressed as the ratio of the total oxygen in the product oxygen to the total oxygen in the processing air entering the tower. which is

In the formula ψ-the extraction rate of oxygen;

Vo2, Vk---oxygen output and processing air volume, m3/h;

yo2, yk---product oxygen and the volume fraction of oxygen contained in the air.

It can be seen from the above formula that for a certain location, the oxygen content in the air is basically unchanged. When the amount of air entering the tower and the purity of the product oxygen are constant, the oxygen extraction rate depends on the amount of oxygen output. The amount of oxygen output is mainly determined by the level of oxygen in the polluted nitrogen under the condition of a certain air intake for the full low pressure oxygen generator. Now take the 3200m3/h air separation plant as an example. When the inlet air is 18100m3/h, the waste gas nitrogen amount is 60.2% of the processing air volume, and the volume fraction of oxygen in the waste nitrogen is 5.5%, the oxygen output is 3200m3/h , The oxygen purity is 99.6%. It can be calculated that the oxygen extraction rate at this time is

ψ=3200×99.6/(18100×20.9)=0.842, which is 84.2%


At the same time, it can be calculated that the amount of oxygen running away with the polluted nitrogen is 18100 (m3/h)×60.2/%×5.5%=599.2m3/h. If the oxygen content in the polluted nitrogen increases to 7.5%, the amount of oxygen running away with the polluted nitrogen is:

18100(m3/h)×60.2%×7.5%=817.2m3/h


It can be seen that the oxygen output will be reduced by (817.2-599.2) m3/h=218m3/h, that is, the oxygen output will be (3200-218)m3/h=2982m3/h. At this time, the oxygen extraction rate ψ=2982×99.6/(18100×20.9)=0.718=71.8%.


Therefore, efforts should be made to reduce the oxygen content in the polluted nitrogen, so that more oxygen can be produced and the oxygen extraction rate should be improved.

 

The oxygen extraction rate of the all-low-pressure rectification tower used to be only 80%-85%, but now it has increased to 90%-95%, and the most advanced ones can even reach about 99%.



What Is The Extraction Rate Of Oxygen?
When the air separation method is used to prepare oxygen, it is always desirable to separate as much of the oxygen in the process air as a product as possible. In order to evaluate the completeness of
Long by picture save/share

Related Products

Send Inquiry

  • Your Name *

  • E-mail *

  • Phone/WhatsApp. *

  • Company

  • Country

  • Subject:

  • Content *

  • SEND

图片展示

Highly welcome your contact to us if you are interested in any of our products. We are looking forward to establishing business relationships with companies all over the world.

24/7Toll Free Assitance

 

     +8615900698841

Quick Navigation


QR Code

 

图片展示
图片展示

Highly welcome your contact to us if you are interested in any of our products. We are looking forward to establishing business relationships with companies all over the world.

24/7Toll Free Assitance

 

     +8615900698841

Quick Navigation

 

Home   About Us   Product   News   Contact Us   Showroom   Sitemap

 

QR Code

 

图片展示
Online Servioe
Contacts
Phone
8615900698841
E-mail
export@jo-radiant.com
添加微信好友,详细了解产品
使用企业微信
“扫一扫”加入群聊
复制成功
添加微信好友,详细了解产品
我知道了