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

Why should the cold box of air separation equipment be kept under pressure

Why should the cold box of air separation equipment be kept under pressure
Feb 03, 2023
Author: DEAR AST

The air separation cold box is generally filled with pearlite as thermal insulation material, and there is air between pearlite particles. After the operation of the air separation plant, the temperature in the cold box decreases, and the volume of pearlite and air decreases. In order to reduce the cold loss, the cold box is required to be well sealed, so the cold box will form negative pressure, and the cold box may be compressed under the effect of the internal and external pressure difference. In order to prevent the cold box from collapsing, generally fill the cold box with dry nitrogen or dirty nitrogen after the equipment is running to keep the cold box at a slight positive pressure.

DEAR Air Separation has seven years of operating experience in the field of industrial gas investment. The gas products produced by the air separation industry are used as raw materials for industrial basic production. Investing in industrial gas projects, building their own gas production lines, taking advantage of the natural advantages of the air separation manufacturing industry, changing the traditional mode of manufacturing only producing equipment without producing end products, and the cost advantage of energy saving and consumption reduction of Deere Air Separation, providing gas products to surrounding customers, will provide a huge development platform for manufacturing industry production, And it will bring huge social benefits and considerable profits. Deer Air is accelerating the strategic transformation from selling "cow" to selling "milk"!

DEAR Air Separation Solve YourWhy should the cold box of air separation equipment be kept under pressureYou 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 output pressure of turbine air compressor is constant, when the flow rate decreases to a certain value, surge will occur. Therefore, it is necessary to control the flow rate of the turbine air compressor and prevent its flow value from entering the surge zone. However, when the system resistance increases, the flow rate will surely decrease, which makes it possible for the flow value to enter the surge zone. Therefore, the common solution is to add a bypass valve from the outlet to the inlet or vent. When the turbine air compressor is normal, the valve is closed. The flow rate is reduced to a certain value, and then the flow through the turbine air compressor is increased.
2025.03.14
Inlet throttling regulation of expander of air separation plant
2025.03.13
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