How to deal with the blockage in the cooler of the reduced-pressure residue outlet unit?
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The cooler for the reduced-pressure residue exiting the unit failed to be purged in time due to a power outage, which led to condensation and blockage of the residue. Steam is being used for purging now, but it doesn’t work; what are some effective solutions?
If the softening point is not high, use more steam for cleaning; if it is high, the pipe has to be cut and then taken to a safe place to be burned
Steam is introduced at the shell side at the top, and at the tube side as well; steam heating is also provided through the vent port. A tarpaulin is laid over the cooler, with steam also being used for heating there – it’s not clear whether this will work or not. :lol
Try blowing steam through the shell side and heating with steam (or hot water above 90°C) on the tube side.
First, it is necessary to determine the properties of the media in the tube and shell sides, such as the softening point and flash point. Then take targeted measures: 1. If the outer shell is equipped with heat tracing, activate it or increase the amount of heat tracing steam. 2. If there is a flushing oil interface, use the system flushing oil to pass through it. 3. Artificial assistance measures can be employed to increase the number of steam belts for heating the heat exchanger. 4. Finally, it is possible to contact the maintenance company to provide temporary electric heating for warming, but care should be taken to ensure that the heating temperature does not exceed the auto-ignition point of the medium being heated. 5. Maintain smooth flow during the processing to prevent blockages and leaks in the heat exchanger. 6. Strengthen equipment inspection during the heating process.
This post was last edited by crazymoonman on 2015-12-11 at 11:28. I have done this before: steam is introduced into the insulation surrounding the inlet and outlet pipelines for residue oil to keep them unobstructed. Then, the circulating water is stopped and vented; steam is connected to the vent valves at the higher points of the circulating water system, as well as to those at the lower points, for venting. The outside of the tank is covered with cotton curtains or insulating felt. When blowing, the valve on the residue oil side must remain open! ! ! ! Prevent the cooler from being damaged due to rising temperatures. After blowing it through, it is essential to check whether there is any internal leakage in the tube bundle; it was a painful lesson for me! !