【Daily Question 2019】Hydrogen production and hydrogenation section – Questions 5-14
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This post was last edited by Green Lotus on 2019-5-14 22:48 under 【Daily Question 2019】 – Hydrogen production and hydrogenation section; Question No. 5-14: What could be the reasons for an increase in reactor pressure difference? Possible reasons include catalyst coking; too rapid pressure changes, which can lead to catalyst fragmentation. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Setting it to a reply earns 1 wealth point; those who answer correctly receive an additional 2 wealth points, while those who get it wrong receive no points at all. Please have the person in charge update the wealth points consumed by the question setter as soon as possible. Temporarily, the top 60 players will receive +1 to automatic wealth acquisition. 3 correct for wealth, 1 incorrect for 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
Catalyst coking, too rapid pressure increase, catalyst crushing
Answer: 1. The properties of the raw materials have changed; the components present or their concentrations are different now； 2. Catalyst coking ； 3. Too rapid pressure rise and fall cause the catalyst to break apart.
1. Solid particles carried in the feed oil 2. Coke formed as a result of the reaction 3. Effects of catalyst strength and packing 4. Deposition of oil-soluble metals in the feed oil
Possible causes include catalyst coking; too rapid pressure changes, leading to catalyst fragmentation.
Catalyst coking; too rapid pressure changes, catalyst crushing
Possible causes include catalyst coking; too rapid pressure changes, leading to catalyst fragmentation.
Possible causes include catalyst coking; too rapid pressure changes, leading to catalyst fragmentation.
The last edit to this post was made by -intense sky Yu- on 2019-5-14 at 17:32. Possible causes include catalyst coking; too rapid pressure changes, which leads to catalyst fragmentation
The last edit to this post was made by sdscj0122 on 2019-5-14 at 17:31. One reason is the high level of impurities in the raw materials; for example, coke powder and fine catalyst particles accumulate on the surface of the hydrogenation catalyst, resulting in an increase in the pressure difference across that catalyst； Secondly, the raw materials may contain isoprene, which condenses and cokes within the hydrogenation catalyst, resulting in an increase in the pressure difference across the catalyst.