[Knowledge of Ammonia Synthesis] Daily Question (09) 2009.12.29
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This post was last edited by chen3jun on 2009-12-28 22:21. Please hide the answers in replies; no scoring will be given unless the answers are hidden. Specific hiding method: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 True or False question: 1. When the temperature of gaseous ammonia exceeds 132.4°C, it will not liquefy at any pressure. （） 2. At the same fresh gas load, the higher the ammonia content at the exit of the synthesis tower, the higher the ammonia production. （ ） 3. The ammonia synthesis catalyst inhibits the reaction of ammonia breaking down into hydrogen and nitrogen. （ ） 4. The optimal temperature curve for the ammonia synthesis reaction is independent of catalyst activity. （ ） 5. In large ammonia plants, radial synthesis towers result in lower bed resistance compared to axial synthesis towers, and the catalyst is easier to reduce. （）
Wrong, wrong, wrong, wrong, right 1# chen3jun
1. Gaseous ammonia does not liquefy at any pressure when its temperature exceeds 132.4°C. (Yes) 2. At the same fresh gas load, the higher the ammonia content at the exit of the synthesis tower, the higher the ammonia production. (Incorrect) 3. The ammonia synthesis catalyst inhibits the reaction of ammonia breaking down into hydrogen and nitrogen. (Incorrect) 4. The optimal temperature curve for the ammonia synthesis reaction is independent of catalyst activity. (Incorrect) 5. In large ammonia plants, radial synthesis towers result in lower bed resistance compared to axial synthesis towers, and the catalyst is easier to reduce. (Mistake)
Answer: Right, Wrong, Wrong, Wrong, Wrong 1# chen3jun