Ammonia present in the coke oven gas is removed by washing with___________________?
Correct answer: B. Dilute ammoniacal liquor
- A. Caustic solution
- B. Dilute ammoniacal liquor
- C. Dilute HCl
- D. Ethanolamine
Explanation
Ammonia is a basic, highly water-soluble component of coke-oven gas and is absorbed in dilute ammoniacal liquor during scrubbing. The resulting liquor can then be processed for ammonia recovery, whereas caustic solution is used mainly for acidic impurities.
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