【Q&A Question 059】February 28, 2018
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【Q&A Question 059】As of February 28, 2018, the main factors affecting the fluctuation of the furnace outlet temperature are: (1) Changes in the temperature, flow rate, and properties of the crude oil fed into the furnace. ⑵Changes in fuel oil pressure or properties, or oil contamination in the fuel gas. ⑶Automatic instrument control has failed. ⑷External climate changes. ⑸Furnace temperature variation. (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 ongoing 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 summary 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 summary section from 2017 (updates have started): https://bbs.hcbbs.com/thread-1657794-1-1.html For the daily image summary section from 2017: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1875160 For the list of daily questions related to LNG technology in 2017: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1804162 For the Q&A section from 2016 (updates are complete): https://bbs.hcbbs.com/thread-1597792-1-1.html
1) Changes in fuel temperature; 2) Changes in fuel pressure; 3) Changes in fuel quantity; 4) Excessive manual adjustment; 5) Changes in air volume and climate conditions
⑴Changes in the temperature, flow rate, and properties of the crude oil fed into the furnace. ⑵Changes in fuel oil pressure or properties, or oil contamination in the fuel gas. ⑶Automatic instrument control has failed. ⑷External climate changes. ⑸Furnace temperature variation.
1) Changes in fuel temperature; 2) Changes in fuel pressure; 3) Changes in fuel quantity; 4) Excessive manual adjustment; 5) Changes in air volume and climate conditions
Fluctuations in gas pressure, fluctuations in feed volume, changes in feed temperature
1) Changes in fuel temperature; 2) Changes in fuel pressure; 3) Changes in fuel quantity; 4) Excessive manual adjustment; 5) Changes in air volume and climate.
1) Fuel temperature variation； 2) Fuel pressure changes ； 3) Changes in fuel quantity ； 4) Excessive manual adjustment range ； 5) Changes in air volume and climate.
Answer: (1) Changes in the temperature, flow rate, and properties of the crude oil fed into the furnace. ⑵Changes in fuel oil pressure or properties, or oil contamination in the fuel gas. ⑶Automatic instrument control has failed. ⑷External climate changes. ⑸Furnace temperature variation.
1. Changes in the temperature, flow rate, and properties of the crude oil fed into the furnace. 2. Changes in fuel oil pressure or properties, or oil contamination in the fuel gas. 3. Automatic instrument control failure. 4. External climate changes. 5. Furnace temperature variation.
1. The feed rate is unstable; 2. The air flow rate at the air inlet is unstable
1) Changes in fuel temperature; 2) Changes in fuel pressure; 3) Changes in fuel quantity; 4) Excessive manual adjustment; 5) Changes in air volume and climate conditions