4.3 What is the coal loading capacity of a rammed coke oven?
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4.3 What is the coal loading per furnace in a ramming coke oven? How to calculate it? What is the shortest coking time? How is the coal loading capacity for other types of coke ovens calculated?
Our company uses 4.3-meter coke ovens with a coal loading capacity of around 20 tons, which can produce 18 tons of coke. The coking time is 22 hours.
The coal loading height is generally around 4.1 meters. The coking time depends on the temperature at the center of the coke cake as well as the standard temperature; when the temperature at the center of the coke cake reaches 950–1050 degrees, the carbon in the furnace has matured. It also depends on the width of the carbonization chamber – in our plant, where the width of the carbonization chamber is 4.3 meters or 5000 millimeters, the coking time is 23 hours
Our unit’s actual measurement values are: 25.1 T; the dimensions of the coal tank are 440X12960X4000 mm, with a moisture content of 12%. The cycle time is currently 24 hours. In the few factories I’ve been in contact with, the shortest cycle time is 22 hours and 40 minutes (due to limitations imposed by top heating), using 4350D coke ovens
Do everyone agree that the shortest coking time for the j-type tamping coke ovens in our factory is 22 hours?
May I ask everyone: for the 4.3-type ramming coke oven with a carbonization chamber width of 500, what is the standard temperature set at? In our plant, it is 1330 on the machine side and 1340 on the coke side, with a cycle time of 24 hours
You’ve set the target temperature a bit high; isn’t the coke overheating? For the several ramming coke ovens I’ve worked on, the 24-hour cycle time requires a standard temperature of 1300 degrees on the machine side and 1310 degrees on the coke side. Also, for a 4.3-meter ramming coke oven, the coal loading per chamber is 23.8 tons (dry coal), and the coke production is 17.5 tons (dry coke)
Hehe, I’m in group 4. The turnaround time for 3 coke ovens is 21 hours and 38 minutes. The standard temperature is 1340, and the height of the coal cakes is 4. 1 I forgot what the coal loading capacity is
4.3 The width of the coke baking chamber is 5000, and the designed coal charging height is 4.1 meters. In our plant, the amount of coal charged during operation is 25 tons (with a moisture content of 11%), while the amount of coke produced is 18.5 tons. The designed coking time is 22.5 hours; under intensified production conditions, it is possible to operate for 21.5 hours in the short term. At a coking time of 22.5 hours, the temperature is 1340 degrees at standard conditions
For a 4.3-meter ramming furnace, the height of the coal cake is 4.0 meters to 4.1 meters. The standard temperature is determined based on the degree of maturity of the coke, as well as the moisture content of the coal fed into the furnace. Different furnace types result in different coking times, and therefore different standard temperatures; there is no fixed value!
It’s my first time dealing with coke; I’m learning from everyone here. Thank you for sharing this. . . . . . . . . . . . . .
The designed minimum coking time is generally 22.5 hours, but if the firing adjustments are adequate, it can also be achieved in 21.5 hours by intensifying production.
Students on the 2nd floor, your coking rate is way too high – 18/20 = 90%. Moreover, the proportion of bituminous coal used in the ramming process is over 35%; how is that possible? The typical coking rate is around 75%.
7.63 Coke ovens with a coal loading capacity of 65 tons, and a coking time of 33 hours.
Our plant’s coking time is 24 hours; 21 tons of coal are loaded per hole, with a value of 1280 on the machine side and 1300 on the coke side.
It’s fine if bituminous coal accounts for over 35%! Our factory has also equipped them! Since the types of coal vary from place to place, and the coal mixtures also differ, it is sufficient as long as the various parameters of the coke meet the required standards; this is indeed the only advantage of the ramming furnace!
1. The coal loading capacity is 25.8 tons. The calculation method is as follows: measure the length, width, height, and density of the coal pellet; multiply length * width * height * density, and by plugging this value into the formula, the weight of the coal pellet can be determined. 2. The coking time of coal in the coke oven is 22 hours and 30 minutes. 4.3 3. What types are there for other types of coke ovens? Please explain, OP
The claim on the third floor is incorrect; how could the width of the carbonization chamber be 5000 mm? It should be 500 mm. We use a ramming coke oven designed by Anshan Coke and Refractory Research Institute, with an average width of the carbonization chamber of 500 mm and an effective height of 4.1 m. The coal loading capacity is 23 T (on a dry basis), the coking time is 22.5 hours, and the coking rate is 72%
Comparison items: 6M top-loading, 5.5M ramming, 4.3M ramming. Furnace types: JN60-6, JNDK55-05, JNDK43-99D. Size of carbonization chamber: 15.98×0.45×6.0, 15.98×0.554×5.5, 14.08×0.5×4.3. Effective volume of carbonization chamber: 38.5 m3, 44.7 m3, 26.68 m3. Distance between centers of carbonization chambers: 1300, 1350, 1200. Taper: 60, 20, 10. Heating level: 1005, 810, 700. Distance between centers of vertical flues: 480, 480, 480. Designed coking time: 19 hours, 25.5 hours, 22.5 hours. Coal loading per hole: 28 t, 40.6 t, 23–24.5 t. Coke production per hole: 21.5 t, 28.8–30 t, 16.9–18 t. Coal blending ratio: When the coke quality is the same, more bituminous coal is used in ramming processes, amounting to 15–20%. Coke quality: When the coal blend is similar, the quality of the coke improves: M40 increases by ~5%, M10 decreases by ~1%, CSR increases by ~4%, CRI decreases by ~1%. Last edited by Fengchen007 on 2008-4-16 at 18:16
The height of the coal cake is 4.1 meters, 4 meters on the machine side and 3.9 meters on the coke side. The width of the carbonization chamber is 500 mm. The coal loading amount is 24 tons, and the coking time is 22.5 hours. 18.6 tons of coke per hole.
Our plant’s 4350D coke ovens have an average width of 500 mm for the carbonization chamber; the height of the coal cakes is around 4 meters, the amount of coal loaded per oven is approximately 23.5 tons, and the coking time is 24 hours. About 18.4 tons of coke per hole.