I have a few questions about coke oven temperature and pressure regulation?
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Our company is a jn28-89 type coke oven, a double bottom spray coke oven, heated by coke oven gas! ! It’s my first time getting started, so I don’t understand a lot. Experts can help me! ! 1. Top suction: Why is the top suction on the machine side higher than the focal side? 2. Air inlet: When the air inlet is opened wider, the suction power of the roof will be reduced! ! In this way, if the suction power is reduced, will the amount of air entering increase or decrease? 3. Recently, the coke side temperatures of coke ovens (1250, 1350) vary greatly. How can we adjust them to better reach the standard temperature (1280, 1320)? 4. Observe the flame through the fire hole. What should you do if the flame jumps too much (air inlet? pressure?)? Thank you! ! Our company's coke oven was built in 1996! Use double fire channel heating! The chimney is on the burnt side! There are 22 fire paths! Thanks! ! This post was last written by fmf_Edited by fjx on 2009-2-7 18:49 ]
Waiting for professional personnel to answer, I am also a newbie and want to know the answer…
The jn28-89 coke oven is an old-fashioned coke oven. There is a question to clarify first. Is this coke oven a double unit or a two-point unit? Is the chimney on the engine side or on the burner side? How many vertical fire channels are there?
I asked a friend to give you an answer... First of all, your question is not specific... There is no detailed explanation... Answer: The first question... The increase in the machine-side roof suction will cause the temperature of the coke-side regenerator to drop due to the large amount of cold air entering... thus lowering the coke-side temperature... As a large amount of hot exhaust gas from the coke side is brought into the machine-side regenerator, the machine-side temperature will increase... to reach a furnace temperature balance... The second question... When the flue suction remains unchanged, the air volume does not increase or decrease... It is just that the distribution of the air volume changes... This is just a personal opinion. If there is any mistake, please ask experts for guidance.…
Our company's coke oven was built in 1996! Use double fire channel heating! The chimney is on the burnt side! ! Thanks! ! This post was last written by fmf_Edited by fjx on 2009-2-6 18:12 ]
1. The coke side furnace temperature is high. Increasing the machine side suction increases the air excess coefficient on the coke side and brings a large amount of waste heat to the machine side, thus increasing the machine side temperature. (Generally, the two-part coke oven is adjusted in this way when there is a temperature difference between the machine and the coke. The same is true for the double-coke oven? I don’t understand! ) Intuitively, increasing the suction on the machine side means increasing the air volume on the machine side. 2. Expanding the opening of the air inlet will reduce the roof accumulation on the ascending side (remember it is the ascending side), while the roof accumulation on the descending side will not change much. The suction difference between ascending and descending will become larger, and the air volume will increase. While the damper opening remains unchanged, by increasing the exhaust valve opening, the roof on the descending side will become larger, the suction difference between ascending and descending will increase, and the air volume will increase. Look at this more theoretically: http://bbs.hcbbs.com/viewthread.php?tid=310801&highlight=%D0%EE%B6%A5%CE%FC%C1%A6 3. Generally, two-part coke ovens and machine-coke have a greater influence on each other. Does your factory use a double-jointed down-jet coke oven? The interaction between machine and coke should be smaller. (1) The temperature difference is large. Check the coke gas distribution ratio of the coke machine. Since I don’t know much about the specifications of your factory’s coke oven and I don’t have much experience, the author can calculate the approximate range of the coke flow rate according to this formula.: V focus/V machine=1.05×L focus×S focus/L machine×S machine, in the formula: V, S, and L are respectively the coking coal gas flow, the average width of the coking chamber, and the length of the coking chamber. (2) Check whether the α value is reasonable, that is, check whether the coke air excess coefficient is within a certain range. A slightly larger air excess coefficient will cause the flame to turn white and the bottom temperature to increase (of course, if the α value is too large, the furnace temperature will be low, and the first adjustment may have this idea). In addition to exhaust gas analysis, you can visually observe whether the coke flame burning is the same. You can compare and observe from the flame shape, flame color, flame height, combustion speed, and vertical fire channel combustion space clarity. This post was last edited by 26722672 on 2009-2-7 14:11 ]