We use functional cookies for a number of reasons, such as keeping the Costain website reliable and secure and to analyse how our site is being used.
Will you accept our use of non-essential cookies?

Yes No Privacy Notice

Decarbonisation - Hydrogen box

Cryogenic hydrogen recovery from ethylene plant

Costain provided a design for a cryogenic cold box to process the overhead stream from a demethaniser of an ethylene plant in China in order to produce hydrogen rich gas.

  • Service 1

TPL Italy (for Dongfang Chemical Works)

  • Service 1

Consultancy & advisory
Complex programme delivery



Hydrogen Purity


Hydrogen Recovery

13,800 Nm3/h

production capacity

Costain developed a design solution which makes use of two stage condensation and utilises Joules-Thomson cooling techniques. Careful process integration enabled a simple cold box design which met the client's requirements.

Following the generation of a conceptual design, Costain was awarded the contract for detailed design, engineering, procurement, construction and commissioning supervision of the cold box in Beijing, China.

Contact and social


Laura Hughes, Sector Director - Energy
01628 842444
[email protected]