[Q&A Question 044] 2018.02.13
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【Q&A Question 044】February 13, 2018: What are the operating principles for increasing and decreasing the hydrogen production rate? 1) When increasing the volume, increase the steam first, then the raw material ； 2) When reducing the volume, reduce the raw material first, then the steam ； 3) During raising or lowering, adjustments must be made promptly based on the bed temperature of the furnace ； 4) This operating principle is to prevent carbon deposition on the catalyst. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Due to the limitations on the number of posts in the “One Question per Day” section, “One Image per Day” has been moved to the registered devices section; you can access it through the directory I posted. For management purposes, if you need to access content from a few days ago, please go to the summary post below to enter the “My Registration Season” event – (Note: This event is currently underway in the Chemical Engineering section). https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=18978 For the daily questions section related to chemical engineering technology training in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888971 For the daily image section related to registration equipment in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888970 For the Q&A section related to hydrogen production and hydrogenation technologies in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888968 For the daily questions section related to LNG technology in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888973 For the Q&A section from 2017 (updates have started): https://bbs.hcbbs.com/thread-1657793-1-1.html For the daily questions section from 2017 (updates have started): https://bbs.hcbbs.com/thread-1657794-1-1.html For the daily image section from 2017: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1875160 For the list of daily questions related to LNG in 2017: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1804162 For the Q&A section from 2016 (all updates completed): https://bbs.hcbbs.com/thread-1597792-1-1.html
Increase volume: first increase the temperature, then the steam volume, and finally the feed amount. Reduce dosage: first reduce the feed volume, then reduce the steam volume, and finally reduce the fuel.
Increase volume first, then increase temperature； Cool down first, then reduce the amount
When increasing the throughput, the temperature should be raised first, followed by the steam and hydrogen supply amounts; after stabilization, the feed rate can be increased. During reduction, first reduce the feed rate, then decrease the steam and hydrogen addition amounts, and finally lower the temperature to an appropriate value.
1) When increasing the volume, increase the steam first, then the raw material； 2) When reducing the volume, reduce the raw material first, then the steam
Answer: 1) When increasing the volume, raise the steam first, then the raw material； 2) When reducing the volume, reduce the raw material first, then the steam ； 3) During raising or lowering, adjustments must be made promptly based on the bed temperature of the furnace ； 4) This operating principle is to prevent carbon deposition on the catalyst.
First increase the temperature, then increase the steam supply, and finally increase the volume； First reduce the volume, then lower the steam pressure, and finally lower the temperature
When increasing the throughput, the temperature should be raised first, followed by the steam and hydrogen supply amounts; after stabilization, the feed rate can be increased. During reduction, first reduce the feed rate, then decrease the steam and hydrogen addition amounts, and finally lower the temperature to an appropriate value.
1) When increasing the volume, increase the steam first, then the raw material； 2) When reducing the volume, reduce the raw material first, then the steam
Increase the volume first, then raise the temperature； Cool down first, then reduce the amount.
The principle for reducing consumption in the conversion process is to first reduce fuel use, then raw materials, and finally steam