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[Roger Federer]

Respected Sir,
How to liquefy only SO₂ from SO₂ and HCl stream ? The concentration of HCl in the the stream is 2% by mass.
What are the considerations to be made for liquefication? Apart from Critical temperature and Pressure which predict where the gas can be liquefied I do not know what parameters are to be considered.

Please suggest some relevant literature which describes separation of gases by liquefication.
I designed a packed column scrubber to remove HCl. However with a height of 2.5m and area of 0.14m² with ceramic intalox saddles as packing material 2% HCl could be reduced to 0.1% HCl. I want to know if there are any other processes available to remove HCl completely.

Thank You

[Art Montemayor]

Krishna:

I could be mistaken, but I get the impression that you are faced with a basic Unit Operations separation problem and you are wandering away from your basic scope of work. I think you have an assignment to separate out the SO₂ from a mixture with HCL. Am I correct?

There is no difficulty in liquefying SO₂ since its properties are as follows:

Boiling Point = 14 ^oF
Melting Point = -98 ^oF

For additional thermodynamic information on saturated SO₂, refer to the attached workbook. As you can see by its thermo properties, you don’t have to invade the Cryogenic zone to obtain SO₂ liquid. But if you want to read about and study Cryogenic systems then I recommend you obtain the following texts through the Internet:

• Cryogenic Heat Transfer - Randall F. Barron - Google Books
• Cryogenic Systems (Monographs on Cryogenics, No 3)
• Cryogenic systems - Randall F. Barron - Google Books

Attached Files

•  SO2 Thermo Properties.xlsx   59.66KB   42 downloads