Technology Overview Project Case


Cryogenic Separation Process is also called Low-Temperature Rectification (<-40℃) Method. Substantially, it is a technology of gas liquefaction, the Process adopts Throttling Expansion Method or Adiabatic Expansion Method to compress and refrigerate gases in order to separate the gases by

rectifying components at their various boiling temperatures.

Cryogenic Separation Process is currently applied for Air Separating, Steel-Making, Natural Gas Liquefying & Separating, Modernized Coal Chemical industries, and it is one of the most common methods for air separation (the other two are Pressure Swing Adsorption & Membrane Separation).


Technical Features:

Our company has supplied plenty of Cryogenic Separating Equipment to our customers, and more twenty sets of Nitrogen-Rich Natural Gas Liquefying equipment and Coke-Oven-Gas Liquefying equipment have been installed and in operation among those units..

Our advantages on Cryogenic Technologies are:

  • Operational Flexibility (Range): 50% ~ 110%

  • Extensive Range of Application, Massive (Processing) Capacity

  • Simple Procedure, Less Investment

  • Highly Comprehensive Utilization & Less Energy Losses

  • Long Lifespan: up to 20 years on average

Applicable conditions & fields:


  • Unit Capacity: 1×104Nm3/d~300×104Nm3/d

  • Applicable Temperature on gas supply: -160℃~80℃

  • Applicable Pressure on gas supply: 0.1 Mpa ~ 10 Mpa

  • Product Yield: up to 99%

  • Purity: up to 99.9%


  • Separating CO, H2, N2 from Ethylene Glycol during its production

  • Separating CH4, H2, CO from Coke-Oven gas

  • Separating N2 during Nitrogen-Rich Natural Gas liquefaction & BOG re-liquefaction

  • Recovering LPG & Gas Condensate from Conventional Gas