【Q&A Question 022】2017.01.22
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This post was last edited by 955559 on 2017-7-21 at 12:44. [Q&A Question No. 022] 2017.01.22: How many categories are there for catalyst poisoning? The reference answers will be visible after responding; points are awarded by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Catalyst poisoning is divided into reversible poisoning, irreversible poisoning, and selective poisoning. Xinchang Cup – Voting for the Top 10 Members of HaiChuan in 2016 is now underway; choose the member you care about the most (please cast your valuable vote for those in the Petrochemical Division). http://bbs.hcbbs.com/thread-1667649-1-1.html Summary post of Q&A sessions from 2017 (updates available now). http://bbs.hcbbs.com/thread-1657793-1-1.html Summary post of daily questions from 2017 (updates available now). http://bbs.hcbbs.com/thread-1657794-1-1.html Summary post of Q&A sessions from 2016 (already updated). http://bbs.hcbbs.com/thread-1597792-1-1.html Third round of selection for outstanding management members of HaiChuan. http://bbs.hcbbs.com/thread-1655902-1-1.html “Creative Ideas for Energy Savings” campaign in the Petrochemical Division. http://bbs.hcbbs.com/thread-1666758-1-1.html Xiaomi phones are up for grabs. Summary post collecting chemical industry technical materials from the “Petrochemical Section”. http://bbs.hcbbs.com/thread-1654603-1-1.html Many prizes waiting to be won (Source: HaiChuan Chemical Forum)
One type is permanent poisoning, and the other is temporary poisoning.
There are two types: 1. If the chemical reaction between the poison and the active components of the catalyst is reversible, or no chemical reaction occurs and the poison merely adsorbs on the surface, thereby reducing the catalyst’s activity only by delaying the renewal of the active sites, then the catalyst’s activity can be restored in whole or in part through appropriate purification. This type of poisoning is referred to as “temporary poisoning” or “reversible poisoning”. 2. If the poison undergoes a chemical reaction (irreversibly) with the substance that constitutes the active center, turning into an inactive substance, it is considered \"permanent poisoning\" or \"irreversible poisoning\".
Two types: permanent poisoning, temporary poisoning.
Reversible poisoning, irreversible poisoning, selective poisoning
Reversible poisoning, irreversible poisoning, selective poisoning
Temporary poisoning； Permanent poisoning