【Daily Question Question 312】November 26, 2017
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【Daily Question No. 312】November 26, 2017. The method to increase the aromatic potential content of naphtha is ( ). A. Increasing the single-pass conversion rate B. Circulating cracking C. Raising the dry point of naphtha D. Processing intermediate-base crude oil. B (Unless otherwise specified, each question is based on hydrogenation units.) ) For management purposes, if you need to view content from a few days ago, please go through the summary post below. 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 (Source: Haichuan Chemical Industry Forum)
1) Excessively high temperatures lead to excessive cracking reactions, resulting in a decrease in the yield of liquid products and a reduction in hydrogen partial pressure. (2) High temperatures cause reactions to proceed too rapidly; the heat generated by these reactions cannot be removed in time, which leads to coking of the catalyst；