Problem of vacuum formation by the top circulation pump at startup
Thread Content
At the start of operation, the top circulation system is filled with gasoline in advance in order to establish a circulation as quickly as possible; however, even after feeding material, the top circulation pump continues to draw air for a long time and fails to establish a circulation. How can this circulation be established more effectively?
At the start of operation, it is advisable to check for any gas leaks or blockages in the top circulation pump and its system. Ensure that all pipe connections are tight and leak-free. Furthermore, it is also necessary to perform preliminary air evacuation on the counter-rotation pump in order to remove air from the system. At the same time, check that the feed is uniform and sufficient to avoid vacuum problems caused by insufficient feed. If the problem persists, it may be necessary to adjust the operating parameters of the pump or consider using a pump with better performance to establish a stable circulation system. .
Drain multiple times; both pumps need to be used for drainage, and it is necessary to do this several times before turning off when oil is seen. The operating pump is located at the far end of the inlet pipeline, while the standby pump is at the near end; drainage is carried out intermittently until normal operation is achieved.
Before starting up our catalytic unit, the top circulation pipeline is filled with gasoline, while the middle section is filled with diesel; water removal must be carried out continuously. The top separation tank should also be filled with as much gasoline as possible in advance. After feeding the reactants back, the temperature at the top of the tower should be brought down to the normal operating level. At the same time, it is necessary to ensure that the interface between the top circulation system and the water separation vessel in the top separation tank functions properly, so that water can be drained smoothly.