The regulating valve for the reprocessed oil slurry does not close properly
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The control valve for the recycled oil slurry does not close properly, and the pipeline for the recycled oil slurry is relatively thin, making it prone to blockages. How can this problem be effectively solved?
The wear of the control valve for the reprocessed oil slurry in our system also results in poor sealing; when reprocessing is not required, the valve located upstream of the control valve can be closed, and when reprocessing is needed, the control valve is opened to regulate flow. Blockages are generally caused by the deposition of catalyst or sludge during the shutdown phase, which leads to blockages in the pipelines. A tee can be added to the control valve drain line, along with a flushing oil line; when the slurry reprocessing line is not in use, flushing oil can be injected to displace the slurry from the pipeline and soak it to prevent blockages.
It is normal for the regenerator slurry control valve not to close properly; this is due to the catalyst powder present in the slurry system, which causes wear on the valve disc over time, resulting in poor sealing. The pipelines in the slurry system are small in diameter and prone to clogging; it is necessary to consider the slurry itself by adding scale inhibitors to it, reducing its viscosity, and effectively controlling the temperature at the bottom of the tower. Additionally, the control valves need to be adjusted frequently during operation
Are there no manual valves upstream and downstream of the control valve? Additionally, if it is necessary to stop the reprocessing of slurry oil, close the manual valves and then purge the lines to prevent pipe blockage
1. It is recommended to use angle valve control valves for the re-refining slurry control. 2. If it is to be shut down, it is recommended to connect re-refining oil to its rear side to ensure circulation and temperature!