Excessive temperature in the smoke duct
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For 4.3m coke ovens of the 64*2 type, the flue gas temperature in each oven is close to 400°C – how should this be addressed?
Let me help analyze the possible reasons: 1. Is the suction too strong? Reduce the suction； 2. If heating is done using blast furnace gas, it is essential to check whether all the gas weights are properly in place; those that are not should be fixed ； 3. Check whether the damper covers can be fully closed tightly; if not, take measures to fix it ； 4. Check the tightness of the two forked parts and ensure it is properly handled ； 5. If the amount of gas is excessive, combustion is incomplete in the combustion chamber; if the sealing of the walls is poor, combustion will take place in the descending regenerative chamber, resulting in high flue gas temperatures. I’ll mention these for now and add more if I remember. Urgently check the above items and take action promptly; otherwise, the consequences will be severe.
The pressure of the coke oven gas is 2400 Pa; the suction force on the machine side is 195 Pa, and the suction force on the coke side is 200 Pa. The opening degree of the air inlet is 200 mm. Standard temperature (machine focal) 1330°C. Turnaround time: 24h40min. Before the temperature switching of the individual flue ducts, it was as high as 380–390°C. I’m seeking advice from those who are more experienced; thank you! ! !
Measure the top of the tank temperature to determine if there is any backflow or leakage of fuel, thereby reducing the commutation time
First, shorten the commutation cycle to once every 20 minutes or 15 minutes, and then conduct a thorough inspection following the instructions on the 3rd floor.
Pay special attention to checking whether there are any damages in the brick gas ducts, as well as any leaks or drafts. It can be opened to examine the opener. If there is a heat-reducing grouting treatment or repair for damages. Next, check whether the suction force is too strong