Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of ____________ this is normally not done?
Correct answer: A. All A., B. & C.
- A. All A., B. & C.
- B. High corrosion rate
- C. Increased cost of equipment
- D. Increased biuret formation
Explanation
Higher pressure and temperature improve urea conversion, but they also increase corrosion and equipment cost, while high temperature promotes biuret formation. These disadvantages make the theoretical increase in yield commercially unattractive.
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