Integrated steel plant by-product recovery plants (coke oven gas) produce which fertilizer?
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Answer: A. Ammonium sulphate
Explanation
Ammonia recovered from coke oven gas in steel plants reacts with sulfuric acid to form fertilizer. Ammonium sulphate is synthesized directly by scrubbing coke oven gas with an aqueous acid solution. Chemical neutralization of recovered ammonia yields crystalline ammonium sulphate agricultural fertilizer products. Coke oven gas contains valuable chemical by-products including ammonia, tar, and benzene compounds. Integrated steel mills operate chemical recovery plants to clean gas and extract marketable by-products. Ammonium sulphate is a nitrogen and sulfur-rich fertilizer widely used in global agricultural crop production.
By-product recovery plants turn hazardous coke oven emissions into valuable industrial chemical commodities. Producing agricultural fertilizers from steel plant waste demonstrates efficient industrial resource utilization. Environmental compliance in steel mills relies on capturing toxic ammonia rather than venting it. Ammonium nitrate is produced using synthetic ammonia and nitric acid rather than coke oven gas recovery. Ammonium phosphate requires phosphoric acid and is not synthesized directly from coke oven by-products. Option D is incorrect because ammonium sulphate is indeed produced in large quantities by steel plants.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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