The coking time is decreasing – how should the furnace protection components be adjusted?
Thread Content
I would like to ask: as the coking time in my plant has decreased, how should the furnace protection iron components be adjusted, and what changes will occur? Urgent! Urgent! Urgent! Urgent! Urgent! Urgent! ! ! ! ! Thank you all!
It mainly measures the tonnage of the upper and lower large springs as well as the curvature of the steel columns, adjusting them to within the specified load range. . .
Due to intensified production, the furnace temperature needs to be raised, so the frequency of inspecting and adjusting iron parts also has to increase. The main measurement is carried out on the upper large spring, which is adjusted to maintain the specified load (for our factory’s 6-meter coke ovens, this is 130–140 KN). The lower large spring has a load capacity of 100–110 KN. The curvature of the furnace column is also measured; it is required to be less than 30. If the value is too high, it is measured again and adjustments are made. Check the pull rod diameter, furnace length, furnace height, etc. This post was last edited by Jin Yusi on 2009-3-10 12:42]
Maintain it according to the normal parameters; the maximum coking time in our factory is 60 hours. Additionally, due to poor market conditions, Plant No. 2’s furnace was shut down twice during the winter; the iron components and springs increased in size by 0.15–0.20 during those shutdown periods, requiring maintenance at normal temperature. The furnace has now been restarted twice, and it is still able to achieve the designed production volume. All coefficients are good.
During the cooling period of the coke oven, the load on the longitudinal and transverse tie rods of the coke oven should be increased immediately. The spring loads for the vertical and horizontal struts are as follows: Spring load for the upper horizontal strut: ≥80KN per strut + 10%. Spring load for the lower horizontal strut: ≥100KN per set + 10%. Spring load for the vertical strut sets: ≥100KN per set + 10%. (In other words, the large springs should be compressed by at least 31 mm from their original free height, with an additional 3 mm of compression possible as appropriate.)
The coke oven has been shut down for maintenance. I was wondering if it would be possible to go to your factory to learn from you; we are also facing the need to shut down our oven, but we haven’t done so yet due to concerns about excessive damage to the oven itself
Shutting down the furnace does cause some damage; it is difficult to control the temperature difference between the regenerator and the combustion chamber, and the brick gas channels in the burner are prone to damage. The carbonization chamber is fairly fine overall, and it is possible to repair the wall surfaces after shutting down the furnace. When our factory built a new 4.3-meter ramming unit in 2008, due to schedule constraints and market factors, Furnace No. 3 was kept at a temperature of over 330 degrees for a month; once the temperature reached over 380 degrees, it dropped back to normal levels on its own. In 2009, the furnace was reheated, and no problems arose. The adjustment of the furnace-related iron components must keep up. Consider stopping one.
We have the opportunity to go to your factory to learn* some things. We too are facing the need to shut down the furnace, but this is due to the significant damage to the furnace itself