【Q&A Question 193】2017.07.12
Thread Content
This post was last edited by liuquan1100 on 2017-8-7 21:42. [Q&A Question 193] 2017.07.12 What are the advantages of using dense packing for catalysts in fixed-bed hydrogenation reactors? The reference answers will be visible after responding; points are awarded by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Note: For questions of the type \"one question per day,\" if a person replies continuously for a month, that is, posts more than 30 times, their score will be assigned as 2 points, which is the lowest possible score. Click once to reply; if multiple replies are made, points will be awarded as appropriate, as deleting posts is also a waste of time. 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 for dense-phase packing ； ③The catalysts are closely aligned, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the unit. Scoring criteria: 2 Wealth points for incorrect attempts; 3–8 points for *incomplete* answers. 10 Wealth points for correct answers, provided along with a detailed explanation; 15–20 Wealth points if the answer is correct but lacks sufficient details. Please score according to these criteria. Note: If there are editing records after answering, only points will be awarded to those who participated. For continuous malicious spamming, 2 points will be deducted each time, with no upper limit. Pure numbers, pure emojis, or random letters that have nothing to do with the answer are all considered malicious spamming; points will start to be deducted after three warnings. 2017 Q&A Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html Petrochemical Sector – “Creative Ideas for Energy Savings” Campaign (Second phase is in full swing) http://bbs.hcbbs.com/thread-1666758-1-1.html 2017 Coal Chemicals – “My Technical Upgrades” http://bbs.hcbbs.com/thread-1786290-1-1.html
Large processing volume, long operating hours on Sundays.
The catalyst stack is larger, and the reaction space velocity is relatively low, which helps to prevent bed collapse and channeling; the uniform radial temperature distribution in the bed extends the catalyst’s service life
: ① The catalyst stack has a larger size, allowing an increase in processing capacity or an extension of the operation cycle without increasing investment in the reactor； ②Under the same processing volume, the reaction space velocity is lower for dense-phase packing ； ③The catalysts are closely aligned, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the unit.
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 for dense-phase packing ； ③The catalysts are closely aligned, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the unit.
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 for dense-phase packing ； ③The catalysts are closely aligned, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the unit.
: (1) The catalyst stack has a larger size, allowing an increase in processing capacity or an extension of the operating cycle without increasing investment in the reactor； (2) Under the same processing capacity, the reaction space velocity is lower for dense-phase packing ； (3) The catalysts are closely packed, which prevents bed collapse and channeling ； (4) A uniform radial temperature in the catalyst bed allows for an extended operating cycle of the device.
(1) The catalyst stack has a larger size, allowing an increase in processing capacity or an extension of the operating cycle without increasing reactor investment； (2) Under the same processing capacity, the reaction space velocity is lower for dense-phase packing ； (3) The catalysts are closely packed, which prevents bed collapse and channeling ； (4) A uniform radial temperature in the catalyst bed allows for an extended operating cycle of the device.
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 rate is lower in closely packed conditions ； ③The catalysts are closely aligned, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the unit.
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 for dense-phase packing ； ③The catalysts are closely aligned, which prevents bed collapse and channeling ； ④The radial temperature uniformity in the catalyst bed allows for an extended operating cycle of the unit.