[Q&A Question 209] 2018.08.03
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【Q&A Question 209】August 3, 2018: Briefly describe the effects of changes in feed rate and feed temperature on furnace operation. Under normal operating conditions, if the feed rate increases suddenly, the outlet temperature drops immediately; if the feed rate decreases, the outlet temperature rises. If the feed temperature rises, the outlet temperature also rises； The feed temperature drops, and the outlet temperature also drops: Changes in the feed volume and feed temperature directly affect the furnace temperature and the outlet temperature of the furnace. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Correct: 3 wealth, Incorrect: 1 wealth ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space through the summary post below
Under normal production conditions, if the feed rate increases suddenly, the outlet temperature drops immediately； The feed rate decreases while the outlet temperature rises ； Feed temperature rises ； As the feed temperature drops, the outlet temperature also drops (changes in feed volume and feed temperature directly affect the furnace temperature and outlet temperature of the furnace).
1. The inlet temperature rises, the furnace load decreases, and the amount of gas is low； Similarly, attention should also be paid to overheating of the furnace tubes ； 2. As the feed rate increases, the furnace load and gas volume increase as well; the blower’s operating capacity must be increased. It is necessary to prevent the furnace tubes from overheating and the blower from experiencing excessive current flow ； Conversely, the same principle applies; at the same time, it is necessary to avoid low feed flow rates, which can cause uneven flow within the furnace tubes and lead to coking.
Under normal production conditions, if the feed rate increases suddenly, the outlet temperature drops immediately； The feed rate decreases while the outlet temperature rises ； As the feed temperature rises, the outlet temperature rises as well ； As the feed temperature drops, the outlet temperature also drops (changes in the feed volume and feed temperature directly affect the furnace temperature and outlet temperature of the furnace).
As the quantity increases, the amount of gas also increases； As the temperature drops, the amount of gas decreases
Fluctuations in the feed rate affect the load on the heating furnace, which must be adjusted promptly to maintain a stable temperature at the reactor inlet and thus ensure stable reaction conditions.
Under normal operating conditions, if the feed rate increases suddenly, the outlet temperature drops immediately; if the feed temperature rises, the outlet temperature also rises; and if the feed temperature decreases, the outlet temperature drops as well (changes in the feed rate and feed temperature directly affect the furnace temperature and the outlet temperature).
Under normal production conditions, if the feed rate increases suddenly, the outlet temperature drops immediately； The feed rate decreases while the outlet temperature rises ； Feed temperature rises ； As the feed temperature drops, the outlet temperature also drops (changes in feed volume and feed temperature directly affect the furnace temperature and outlet temperature of the furnace).
1. The inlet temperature rises, the furnace load decreases, and the amount of gas is low； Similarly, attention should also be paid to overheating of the furnace tubes ； 2. As the feed rate increases, the furnace load and gas volume increase as well; the blower’s operating capacity must be increased. It is necessary to prevent the furnace tubes from overheating and the blower from experiencing excessive current flow ； Conversely, the same principle applies; at the same time, it is necessary to avoid low feed flow rates, which can cause uneven flow within the furnace tubes and lead to coking.
An increase or decrease in the feed rate affects the temperature at the furnace outlet; too little feed can lead to an increase in temperature and even coking, while too much feed results in a decrease in temperature and an increased load on the furnace. The temperature is also affected in the same way
Under normal production conditions, if the feed rate increases suddenly, the outlet temperature drops immediately； The feed rate decreases while the outlet temperature rises ； As the feed temperature rises, the outlet temperature rises as well ； The feed temperature drops, and the outlet temperature also drops (changes in feed volume and feed temperature directly affect the furnace temperature and outlet temperature of the furnace)