[Q&A Question 240] 2017.08.28
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【Q&A Question 240】August 28, 2017: What are the phenomena associated with liquid in the gas zone? The reference answer can be seen after responding; points will be awarded for identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Phenomenon: The furnace temperature fails to rise, combustion is incomplete, black smoke emerges from the chimney; in severe cases, backfire in the furnace can occur. Scoring criteria: Incorrect answers result in 2 wealth points; *incomplete* answers earn 3–8 points. Correct answers with a detailed explanation grant 10 wealth points, while correct answers with additional *insufficient* information yield 15–20 wealth points. Please score according to these criteria. Note: If there are editing records after answering, only 1 Wealth point will be given to the participant. For continuous malicious spamming, 2 Wealth points will be deducted each time, with no upper limit. Pure numbers, pure emojis, or random letters that have nothing to do with the answer are all considered malicious spamming. Points will start to be deducted after three warnings. 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 Petrochemical Sector – “Creative Ideas for Energy Saving” Campaign (Phase 2 is in full swing) http://bbs.hcbbs.com/thread-1666758-1-1.html 2017 Coal Chemicals – “My Technical Upgrades” http://bbs.hcbbs.com/thread-1786290-1-1.html
1) The furnace temperature rises, and the outlet temperature increases, becoming uncontrollable. 2) The furnace bottom caught fire. 3) Slight black smoke from the exhaust.
1) The furnace temperature rises, and the outlet temperature increases, becoming uncontrollable. 2) The furnace bottom caught fire. 3) Slight black smoke from the exhaust.
The furnace temperature cannot be raised; combustion is incomplete, and black smoke comes out of the chimney. In severe cases, this can cause backfire in the furnace.
The fire is emitting black smoke; it might go out
Black smoke is coming from the chimney; the pressure of the fuel gas at the main burner is rising sharply, and the temperature inside the furnace is increasing rapidly； The furnace exit temperature rises sharply ； There are oil droplets visible through the fire sight ； Furnace positive pressure ； Watch the fire window spew fire outward ； It emits black smoke, and in severe cases, there is a risk of damaging the furnace bottom.
The furnace temperature cannot be raised; combustion is incomplete, and black smoke comes out of the chimney. In severe cases, this can cause backfiring in the furnace
Black smoke emerges from the chimney, the temperature inside the furnace rises sharply, the exit temperature increases, the flame changes from blue to red, and in severe cases, the bottom of the furnace catches fire
Rising liquid level in the inlet separation tank, fluctuations in gas pressure and consumption, fluctuations in negative pressure and oxygen content in the heater, fluctuations in the outlet temperature of the heater, and possible black smoke emission from the chimney
There is a rain of flames inside the heating furnace; the flames are unstable, and the temperature in the furnace chamber is also unstable