Gas in the tube side of a heat exchanger leaks to the shell side; how can the amount of cross-flow gas be detected?
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During this period, in the production process, the temperature in the conversion section has been abnormal. We use a four-stage catalytic system here, but it seems that the SO2 from the second shell side is leaking into the tube side. This leads to an increase in the inlet temperature at the fourth catalytic section; now we want to find out how to calculate the gas flow rate during the second exchange I implore you all!
Hehe, should acid be produced from sulfur or from pyrite?
For the production of acid from pyrite, we also conducted analyses on sulfur dioxide, but the results were not very significant.
By analyzing the SO2 concentration, it is possible to determine whether there is a leak in the heat exchanger; the amount of gas leaking can also be estimated roughly (provided that the SO2 concentrations on both sides before the leak occurred are known). And who would analyze the gas concentrations on both sides of the heat exchanger before a leak occurs, during normal production? (During normal production, only the SO2 concentrations in the feed to the converter and in the exhaust gases are analyzed.) Furthermore, it is sufficient to know that the heat exchanger is leaking; what is the point of calculating the amount of air leakage? (A slight leak will cause the conversion rate to **decline**.)
It’s pointless to calculate the gas volume; simply block it off when the machine is shut down. We’re preparing for a major repair to replace the heat exchanger
In my opinion, if it is already known that air leakage is occurring in the heat exchanger, this issue should be resolved as soon as possible; otherwise, it will damage both the quality of the products produced and the heat exchanger itself. Therefore, detecting the amount of air leakage is hardly meaningful. Of course, if you want to conduct such detections, there are instruments available for detecting gas leaks, including various infrared models, though they are relatively expensive. It’s best to fix the heat exchanger leak first! My Haichuan Space has technical examples for addressing leaks – it’s convenient, fast, and easy to use, avoiding the need to replace new heat exchangers.
A material balance for the heat exchanger can be used to calculate the leakage rate.