【Daily Question No. 169】June 18, 2017

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【Daily Question No. 169】On June 18, 2017, what was the purpose of carrying out isothermal dehydrogenation during the shutdown of the hydrogenation unit? ( ) A. Improve hydrogen utilization rate B. Increase catalyst activity C. Release hydrogen stored in the reactor walls D. Prevent corrosion caused by polyoxysulfuric acid. The reference answers can be seen after responding; scoring is achieved by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) C grading criteria: 2 Wealth points for incorrect attempts; 3–8 points for *incomplete* answers. 10 Wealth points for correct answers with detailed explanations; 15–20 Wealth points for correct answers with additional *insufficient* details. Please grade 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