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How many “times” are there in the production process of rammed coke ovens?

2009-12-26View Original

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How many “times” are there in the production process of rammed coke ovens? How is it defined, especially for coal loading?
Reply #22009-12-27
Why didn’t anyone tell me? I’m dying of worry
Reply #32009-12-28
1 Pushing time: The moment when the tip of the pushing rod comes into contact with the surface of the coke cake. 2 Coal loading time: The time when the coal bottom plate begins to slide after being withdrawn from the carbonization chamber. 3 Coking time: The interval from coal charging to the next coke pushing in the same carbonization chamber. 4 Turnaround time: The interval between two consecutive coke pushing operations in the same carbonization chamber. 5 major cycle times: The interval required to process the same batch number at the same time on different dates. 6 Pushing current: refers to the current at which the coke cake begins to slide. 7 Coal loading current: The current at which the coal bottom plate begins to slide. 8 “Random Note” number: A furnace number that cannot discharge coke in the normal order.
Reply #42009-12-29
I’ve learned it, but I need to make up for the lessons properly
Reply #52009-12-30
This post was last edited by shuihefeng on 2009-12-30 12:08. 1. Pushing time: The time when the tip of the pushing rod comes into contact with the surface of the coke cake, marking the start of the operation (an instantaneous value). 2. Coal loading time: The time when the coal loader opens the front shield to begin loading coal (an instantaneous value). 3. Coal loading duration: The time interval from when the front shield is opened for coal loading until the rear shield moves away from the surface of the coke cake. 4. Coking time: The time that the coal remains in the carbonization chamber, that is, the interval between the coal loading time and the pushing time. 5. Operation time: (1) Operating time per furnace: The time interval between pushing (or coal loading) in one carbonization chamber and doing the same in the adjacent chamber. (2) Duration of each operation period: The time interval from pushing coal in the first furnace after maintenance is completed until pushing coal in the last furnace before the next maintenance session; it is calculated as the number of batches of coal produced during this period multiplied by the operating time per furnace. (3) Total operating time for all furnaces: The sum of the durations of all operation periods within one cycle. 6. Carbonization chamber processing time: The time interval from pushing coal out of a chamber to loading new coal into it (i.e., the time when the chamber is empty). 7. Cycle time (i.e., small cycle time): The time interval between pushing coal out (or loading coal) in a certain chamber and doing the same again in the next cycle. 8. For each carbonization chamber: Cycle time = Coking time + Carbonization chamber processing time. For the entire furnace set: Cycle time = Total operating time for all furnaces + Maintenance time

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