【Daily Question No. 021】2017.01.21
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This post was last edited by 955559 on 2017-7-31 at 15:42. [Daily Question No. 021] On 2017.01.21, the purity of recycled hydrogen must be above ( ) for condensation reactions and coking to avoid; a low hydrogen sulfide content in recycled hydrogen leads to ( ), while a high hydrogen sulfide content affects ( ). The reference answers can be seen after replying, and points will be awarded for identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Low values, catalyst reduction, hydrogen partial pressure. Voting for the 2016 HaiChuan Top 10 Members has begun – choose the member you care most about (please cast your valuable vote for those in the petrochemical sector). http://bbs.hcbbs.com/thread-1667649-1-1.html Summary post of Q&A questions for 2017 (updates available now). http://bbs.hcbbs.com/thread-1657793-1-1.html Summary post of daily questions for 2017 (updates available now). http://bbs.hcbbs.com/thread-1657794-1-1.html Summary post of Q&A questions from 2016 (all updates completed). http://bbs.hcbbs.com/thread-1597792-1-1.html Third phase of the HaiChuan Outstanding Management Members selection contest. http://bbs.hcbbs.com/thread-1655902-1-1.html “Creative Ideas for Energy Saving” campaign in the petrochemical sector. http://bbs.hcbbs.com/thread-1666758-1-1.html Xiaomi phones are up for grabs. Summary post collecting chemical engineering technical materials from the “Petrochemical Section”. http://bbs.hcbbs.com/thread-1654603-1-1.html Many prizes await you. (Source: HaiChuan Chemical Forum)
Low; excessive reduction of the catalyst, high degree of hydrogenation reaction
Too low: Catalyst activity decreases. Catalyst activity
A low purity of recycled hydrogen can lead to condensation reactions and coking; a low hydrogen sulfide content in recycled hydrogen causes (catalyst reduction), while a high hydrogen sulfide content has an impact on ( )
Low; the catalyst loses its activity, purity of recycled hydrogen
Low, catalyst reduction, hydrogen partial pressure
Low catalyst activity leads to a suppression of the reaction
A low purity of recycled hydrogen leads to condensation reactions and coking; a low hydrogen sulfide content in recycled hydrogen enables the reactions to proceed smoothly, resulting in a low sulfur content in the product, while a high hydrogen sulfide content in recycled hydrogen affects the quality of the product