Is the method for calculating coke production incorrect?
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Our plant has been calculating its coke production theoretically based on coal consumption and volatile matter, with a coal-to-coke ratio of around 1.35. By visiting other coking plants, it can be seen that the volatil content of the coal used in their furnaces is about 3 percentage points higher than ours, yet their specific consumption is only around 1.3. Is it our method for calculating coke production that is wrong?
It’s not necessarily a calculation error. Our company has information on over a hundred different types of coal; the corresponding values generally fall between 1.3 and 1.42. Since the types of coal used in various factories differ, as do the control methods applied in different stages of coking, and the requirements for the final products also vary, it’s normal for there to be differences in the numbers. Of course, this is just my personal opinion and may not be authoritative.
It’s not possible to simply rely on theory for calculations, let alone if that theory is widely recognized
Is your calculation formula consistent with the benchmarks used by other manufacturers? Some manufacturers use a combustion-based basis, while others use a dry-based basis; you can check this aspect!
Reply to 1# Raise a cup to invite the moon: To calculate coal consumption accurately, it is first necessary to have an exact measurement of the coal itself; in addition, it is essential to accurately measure the moisture content of the coal, its volatile matter, as well as the volatile matter in the coke. Only then can coal consumption be determined through theoretical calculations. The key lies in the representativeness of the sample
Reply to 3# Captain: You are absolutely right; the calculation method we use here is different from the benchmarks adopted by other factories
Reply to 4# Shiyi Di: I’ve visited many factories; they use a dry-basis calculation method, while we here use a dry-ash-free basis