High-pressure scrubber issues (dioxide tower stripping method)
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Dear sea friends, if crystallization occurs inside the tube side of the condenser in the lower section of the high-pressure washer (the part that exchanges heat with the high-pressure water), will the outlet temperature of the high-pressure washer be high or low? This post was last edited by guizhou*aolong on 2009-2-17 19:22.]
Assuming the high-pressure loop does not experience overpressure, the outlet temperature of the high-pressure washer decreases.
It’s hard to say; there’s a possibility of an increase as well as a possibility of a decrease
Under normal circumstances, the temperature rises, and so does the high-pressure pressure.
It’s possible either way! However, based on the behavior of the methamine condenser in low-pressure absorption processes, it can be inferred that when crystallization occurs in the low-methamine condenser, the temperature difference across it decreases, and the outlet temperature of the liquid from the low-pressure methamine condenser rises. It seems that the temperature should increase; this is just my opinion, and I apologize if there are any mistakes. I hope you can point them out for me! :handshake :) Last edited by *aohong30 on 2009-2-25 10:23 ]
The reasons I think lead to a drop in temperature are as follows: 1. If crystallization occurs inside the heat exchange tubes, the gas exiting the synthesis tower cannot reach the heat exchange section, which will inevitably cause overpressure in the high-pressure system. The severe consequence of this is that the explosion-proof panels in the high-pressure area will be damaged, allowing the gas to take a shortcut and avoiding any heat exchange reaction with the ammonium methylate solution; as a result, the temperature drops. 2. Assuming that the high-pressure circuit does not experience overpressure, the ammonium methoxide solution cannot enter the heat exchange section; as a result, it takes a shortcut (based on an analysis of the equipment structure) and enters the high-efficiency effluent pipe, which also leads to a decrease in temperature. This post was last edited by ymtuegj12 on 2009-2-23 14:45.]
My humble opinion: 1. As long as the heat exchange section is not completely blocked and flow still exists, the heat of reaction cannot be dissipated, so the temperature will rise; however, this is unlikely to happen, and even if it does, adding a little more water will quickly resolve the issue. 2. If it is completely blocked, the consequences are severe. . . . . . .
In the event of local blockages: it is possible for a crystalline film to form on the inner wall of the heat exchange tubes. There should be liquid flow inside the tubes, and some of the heat generated by the absorption reaction should also be present; however, this heat cannot be removed promptly through the circulating water. In such cases, the temperature of the ammonium methoxide solution at the outlet of the high-pressure washer should increase slightly. :loveliness:
This post was last edited by YHL512777 on 2009-5-2 at 21:49. It’s not clear what kind of processing condition is meant by “sea friend” – is it crystallization during shutdown and tower sealing, or during operation? With this background information, everyone will be able to contribute more effectively.