【Q&A Question 309】November 23, 2017
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【Q&A Question 309】November 23, 2017: What is the impact of the amount of hydrogen mixed in during hydrogenation? Answer: A higher hydrogen mixing ratio helps stabilize the bed temperature, reduces catalyst coking, and promotes the hydrogenation reaction ； A low hydrogen mixing ratio reduces the efficiency of the reaction and can easily lead to catalyst coking. (Unless otherwise specified, all questions and answers are 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)
A higher hydrogen mixing ratio helps to maintain stability in the bed temperature, reduces catalyst coking, and promotes the hydrogenation reaction. A lower hydrogen mixing ratio leads to a decline in reaction efficiency and may result in catalyst coking.
A higher hydrogen mixing ratio helps to stabilize the bed temperature and reduces coking； A low hydrogen mixing ratio reduces the reaction efficiency and leads to increased coking
It will affect the hydrogen-to-oil ratio as well as the space velocity, thereby impacting the degree of reaction
A higher hydrogen mixing ratio helps to stabilize the bed temperature rise, reduces catalyst coking, and promotes the hydrogenation reaction. A decrease in the hydrogen mixing ratio reduces the reaction efficiency, which may lead to coking of the catalyst.
A higher hydrogen mixing ratio helps stabilize the bed temperature, reduces catalyst coking, and facilitates the hydrogenation reaction； A low hydrogen mixing ratio reduces the efficiency of the reaction and can easily lead to catalyst coking.
By the amount of mixed hydrogen, do you mean the adjustment of the hydrogen-to-oil ratio? By reducing the hydrogen-to-oil ratio, the degree of hydrogenation naturally decreases! Generally, devices rarely use the hydrogen-to-oil ratio as a control mechanism, as there is significant lag; once errors occur, many defective products are produced. There will also be many related problems, such as changes in reaction temperature and changes in the hydrogen sulfide concentration in the system, among others. Of course, adjustments can be considered if the device has just started operating, but reducing its performance is usually done for energy-saving reasons
A higher hydrogen mixing ratio helps to maintain stability in the bed temperature, reduces catalyst coking, and promotes the hydrogenation reaction. A lower hydrogen mixing ratio leads to a decline in reaction efficiency and may result in catalyst coking.
A higher hydrogen mixing ratio helps stabilize the bed temperature, reduces catalyst coking, and facilitates the hydrogenation reaction； A low hydrogen mixing ratio reduces the efficiency of the reaction and can easily lead to catalyst coking.
A higher hydrogen mixing ratio helps stabilize the bed temperature, reduces catalyst coking, and facilitates the hydrogenation reaction； A low hydrogen mixing ratio reduces the efficiency of the reaction and can easily lead to catalyst coking.
It is larger, has a high circulation rate, ensures uniform distribution of materials within the reactor, maintains a high hydrogen partial pressure, allows heat from the reactor to be removed promptly, and results in high energy consumption； Too low, on the contrary