Generally, what is the allowable difference between the oxygen flow rate in air separation and the oxygen flow rate during gasification?
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Generally, what is the allowable difference between the oxygen flow rate in air separation and the oxygen flow rate during gasification? What is it related to, and what causes large errors?
Theoretically they are equal, which is related to the accuracy of the measuring instruments
It is normal to have some errors; what matters is the extent of the deviation, and the instrument can be calibrated!
It’s mainly a problem with the measuring instruments! ! It can be deduced based on the gas generation volume! ! ;P
In real time, it will not be the same when transmitted through a fairly long pipeline. The instantaneous flow rates at the two points, before and after, are related to the fluctuations in pressure at that point. It’s actually not a problem with the measuring instrument. This phenomenon occurs in all fluid pipeline transmissions with pressure fluctuations. The flow difference depends on the pressure difference before and after the same time point at the locations of these two points. A rough estimate can be made on-site.
Air separation is a single-point measurement error, while gasification is a multi-point measurement error. Based on the principle of error accumulation, whether it is addition or subtraction, the errors are always added in terms of their absolute values. So the total error increases after multiple measurements
How much is the difference between yours? It seems like ours differs by quite a bit, around 1200 Nm3/h.
More or less; the total oxygen flow difference between our two systems is 1500 cubic meters per hour
They’re more or less the same; the difference is around 1,000–2,000. In our case, the amount of gasification is slightly higher than that of air separation, by 1,000–2,000
Are you Texaco gasification units? What is the coal feeding rate?
Multi-component slurry. . . The coal slurry flow rate at full load per furnace is 90 cubic meters per hour