当前位置: Home / Faq / Small air separation FAQ /

Why does the time it takes for the oxygen concentrator of the air separation equipment to accumulate liquid during startup differ

Why does the time it takes for the oxygen concentrator of the air separation equipment to accumulate liquid during startup differ
Dec 05, 2023
Author: DEAR AST

The process of accumulating the necessary low-temperature liquid for distillation in a distillation tower is actually a process of storing cold energy. The cooling balance relationship during this process is: total cooling capacity=total cooling loss+cooling capacity required for liquid accumulation

For the same oxygen concentrator, the amount of accumulated liquid required is the same, so the required cooling capacity is also the same. However, the total cooling capacity and total cooling loss of an oxygen concentrator are related to specific conditions, and sometimes there is a significant difference. It is related to the installation, maintenance quality, and operation during the start-up phase of the oxygen concentrator.

The time it takes to accumulate liquid is also related to the heating of the equipment (including the heating of the insulation layer) before startup, as well as whether the equipment and insulation layer inside the cooling tower cool evenly and thoroughly after startup. If the temperature is too high at the end of heating and the cooling stage is not fully cooled, the liquid that appeared earlier will evaporate a large amount after being injected into the upper tower. At the same time, the heat stored in the insulation layer (the amount of cooling required to cool the insulation layer is often greater than the amount of cooling required for the entire liquid accumulation stage) continues to flow into the tower, causing the liquid level to remain stagnant or rise slowly, prolonging the time required for this stage.

DEAR Air Separation customers with complete and efficient engineering and technical solutions to meet their needs.

DEAR Air Separation Solve YourWhy does the time it takes for the oxygen concentrator of the air separation equipment to accumulate liquid during startup differYou 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.
Related FAQ
More Related FAQ
When the amount of treated air increases, the rising steam in the distillation column will increase, and the amount of liquid to be condensed in the main cooler will increase accordingly, so it has no effect on the reflux ratio in the column. The purity of oxygen and nitrogen remained unchanged in a certain range with the increase of gas volume, and the output increased proportionally with the increase of gas volume. However, with the increase of the amount of condensate in the main cooler, the heat load of the main cooler increases. When the heat transfer area is insufficient, the temperature difference of the main cooler will inevitably expand, and the pressure of the lower column will increase accordingly. At the same time, with the increase of gas velocity in the column, the amount of downflow liquid increases, and the liquid layer on the tray thickens, which increases the resistance of the tray and the pressure of the upper and lower columns. This will adversely affect the sepa
2026.07.15
How to accurately control the purity and energy efficiency of air separation distillation by improving quality and reducing consumption?
2026.07.14
Need more information?
Contact us for more details about our air separation equipment, solutions and services.
Products
  • Large air separation
  • Small air separation
  • High purity nitrogen air separation
  • Liquefaction air separation
  • Complete air separation
  • Biogas purification
  • Air separation parts
Need more information?
Tel:+86-19837850537
© Kaifeng DEAR Air Separation Industry Co., Ltd.. All rights reserved.
Online
Inquiry
Email
Top