After the sieve plate trays were installed, excessive shedding occurred during the trial operation; urgent advice is needed
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After the sieve tray plates were installed, a large number of them fell off during the trial operation. I urgently need advice on what the main issues are in the equipment installation process, as well as the potential risks “The purpose of the towers in question is three-stage distillation, with the output being crude liquor; what highlights this issue is the combined tower, whose trays use rectangular floating valves. ”
Not securely installed? Is the pressure difference between the upper and lower parts of the tray too large?
During installation, the sieve plate should be reinforced; otherwise, during operation, the tower pressure may cause it to reverse, having a significant impact on the entire system.
The heating rate is too fast; the gas-phase load is too high!
1. The fixing elements are not secure; use double nuts, and if that doesn’t work, resort to welding. 2. During trial operation, with the tower under light load, the float valve switch operates frequently and there is significant vibration, which can easily loosen the fixing elements. 3. Fixed-valve trays can be used.