[Ammonia synthesis knowledge] Question of the day (12) 2010.01.01
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When replying to a post, please hide the answers; responses without hiding them will not be graded in principle. Specific hiding method: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 True or False Questions 1. In the synthesis loop of the Brown process, flanges of high-pressure equipment are mainly sealed using wound metal gaskets. ( ) 2. The inner cylinder of the ammonia synthesis tower can withstand not only high temperatures but also high pressures. ( ) 3. To fully utilize the catalyst’s low-temperature activity, the inlet temperature of the catalyst bed should be kept as close as possible to the onset temperature of its activity. ( ) 4. In the Browne process, the amount of catalyst loaded in the three series-connected towers increases sequentially, and the ammonia production of each tower also increases accordingly. ( ) 5. In the Brown unit, the inlet temperature of the three series-connected synthesis towers is mainly regulated through a bypass line of the heat exchanger. ()
1. For the flanges of high-pressure equipment in the synthesis loop of Brown’s apparatus, wound metal gaskets are primarily used for sealing. (Wrong) 2. The inner cylinder of the ammonia synthesis tower can withstand not only high temperatures but also high pressures. (Incorrect) 3. To fully utilize the catalyst’s low-temperature activity, the inlet temperature of the catalyst bed should be as close as possible to the onset activity temperature. (Wrong) 4. In the Bosch process, the amount of catalyst loaded in the three cascaded towers increases sequentially, and the ammonia production of each tower also increases accordingly. (Incorrect) 5. In the Brown apparatus, the inlet temperature of the three series-connected columns is mainly regulated through the bypass of the heat exchanger. (Yes)
This post was last edited by snowdfr on 2010-1-1 at 08:29. 1. Correct 2. Incorrect 3. Correct 4. Incorrect 5. Correct