【Daily Question No. 142】2017.05.22

Thread Content

【Daily Question No. 142】May 22, 2017. The flash point of oils is an important safety indicator. When light oil and heavy oil are heated exchange heat in a floating-head heat exchanger, if it is found that the flash point of the heavy oil decreases significantly, this indicates ( ). A. Light oil has leaked into the heavy oil. B. Heavy oil has leaked into the light oil. C. The heavy oil has decomposed during the heat exchange process. The reference answer can be seen after responding; points will be awarded as long as the key points are identified correctly. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Scoring criteria: 2 Wealth points for incorrect answers; *incomplete* answers earn 3–8 points. 10 Wealth points are given for correct answers accompanied by a detailed explanation; answers that are correct but lack sufficient details earn 15–20 Wealth points. Please use these criteria for scoring. 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