Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha is_________________?
Correct answer: C. Aqueous solution (10% water) of diethylene glycol
- A. Propane
- B. Diethylene glycol
- C. Aqueous solution (10% water) of diethylene glycol
- D. Methyl ethyl ketone (MEK)
Explanation
The Udex process uses aqueous diethylene glycol as a selective solvent for extracting light aromatics from hydrocarbon streams. The specified solvent is therefore diethylene glycol containing about 10% water.
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