【Q&A Question 179】2018.07.03
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【Q&A Question 179】July 3, 2018: Briefly describe the advantages of using a dense-phase packing for catalysts in fixed-bed hydrogenation reactors ①The catalyst stack is larger, allowing an increase in processing capacity or an extension of the operating cycle without increasing reactor investment ； ②Under the same processing volume, the reaction space velocity is lower in dense-phase packing ； ③The catalysts are closely packed, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the facility. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Correct: 3 wealth, Incorrect: 1 wealth ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space through the summary post below. The APP short-video skill competition has begun! https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1951670
1. The catalyst loading is high, resulting in a longer operating cycle compared to dilute-phase loading； 2. Capable of effectively preventing catalyst bridging ； 3. It can effectively prevent gully flow.
①The catalyst stack is larger, allowing an increase in processing capacity or an extension of the operating cycle without increasing reactor investment； ②Under the same processing volume, the reaction space velocity is lower in dense-phase packing ； ③The catalysts are closely packed, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the facility.
①The catalyst stack is larger, allowing an increase in processing capacity or an extension of the operating cycle without increasing reactor investment； ②Under the same processing volume, the reaction space velocity is lower in dense-phase packing ； ③The catalysts are closely packed, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the facility.
Answer: ① The catalyst stack is larger, allowing an increase in processing capacity or an extension of the operating cycle without increasing reactor investment； ②Under the same processing volume, the reaction space velocity is lower in dense-phase packing ； ③The catalysts are closely packed, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the facility.
①The catalyst stack is larger, allowing an increase in processing capacity or an extension of the operating cycle without increasing reactor investment； ②Under the same processing volume, the reaction space velocity is lower in dense-phase packing ； ③The catalysts are closely packed, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the facility.
①The catalyst stack is larger, allowing an increase in processing capacity or an extension of the operating cycle without increasing reactor investment
①The catalyst stack is larger, allowing an increase in processing capacity or an extension of the operating cycle without increasing reactor investment； ②Under the same processing volume, the reaction space velocity is lower in dense-phase packing ； ③The catalysts are closely packed, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the facility.
1. The catalyst stack is larger, allowing an increase in processing capacity or a longer operating cycle without increasing the investment in the reactor; 2. Under the same processing volume, the space velocity of the reaction with dense packing is lower
①The catalyst stack is larger, allowing an increase in processing capacity or an extension of the operating cycle without increasing reactor investment； ②Under the same processing volume, the reaction space velocity is lower in dense-phase packing ； ③The catalysts are closely packed, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the facility.
①The catalyst stack is larger, allowing an increase in processing capacity or an extension of the operating cycle without increasing reactor investment； ②Under the same processing volume, the reaction space velocity is lower in dense-phase packing ； ③The catalysts are closely packed, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the facility.