There’s nothing to say

This coke oven seems to be severely damaged; it stopped operating recently. What’s going on? How amazing! What is the model of this coke oven? How old is the furnace? How is the maintenance? What are the iron components used to protect the furnace? Drawings and more detailed written descriptions make it easier for everyone to provide suggestions.

This post was last edited by Long Fei Hu 11 on 2017-8-29 at 17:17. It is a 4X60-hole JNX3-70-2 type regenerative coke oven that is currently in operation; it has been in use for less than two years. The oven drying process lasted nearly ten months due to **certain reasons, and after it started operating, only the adjustment of the horizontal and vertical tension springs on the upper machine side was carried out. The original data regarding the verticality of the iron components resisting the wall are lost; the current measurement values are as follows: from the end-mounted machines to the focal side, they are 19, 73, and 32 respectively, while from the intermediate-mounted machines to the focal side, they are -11, 0, and 19 respectively

Upvote, good! ! ! :lol

If there are no issues with the management of the coke ovens, then check the quality of the civil engineering work; it seems that the strength of the concrete used is insufficient, and the management during the construction process was inadequate.

First, I would like to ask whether the upper parts of the resistance walls on both the end and intermediate platforms bulge outward? Based on the data you provided, the verticality of the end platform and the intermediate platform is inconsistent; the end platform is clearly more tilted ； Well, if 1) the springs of the longitudinal tension rods in the coke oven are not damaged (not broken or compressed to the point where they are in rigid contact), and if the tension rods themselves are not damaged either (not broken, not softened or thinned out due to overheating), then the tension force applied by the longitudinal tension rods at the intermediate and end platforms will definitely be the same. It is necessary to check immediately whether this value falls within the design range. In actual production, it is recommended to use a tension force that is slightly higher than the specified value; generally, 1-2 tons is sufficient ； 2. Judging from the images, it is highly likely that the civil engineering retaining wall has failed; it is necessary to immediately reduce the production load and reinforce the failed retaining wall ； 3. Check whether the bricks on the top of the failure-resistant wall have been soaked due to water leakage, which may cause water to enter that area of the wall, leading to expansion and cracking ； 4. If necessary, the enterprise can produce additional components to increase the number of longitudinal tension bars, thereby ensuring longitudinal expansion ； In summary, I believe that the longitudinal tie rods and their springs are key areas that require thorough inspection. The failure-resistant wall should be reinforced immediately, and if necessary, the number of longitudinal tie rods should be increased.

If the furnace length exceeds the designed length by 50 centimeters, it is considered unusable; repairing it is almost as costly as building a new furnace