What is the appropriate loading pressure for propylene?
Thread Content
What is an appropriate loading pressure for liquefied propylene? Is it good to bury the gas-liquid pipelines used for loading underground? In particular, if the gas pipeline is buried, a pocket formation will inevitably occur; how should liquid accumulation be dealt with? I hope everyone can offer some suggestions
Regarding whether gas-liquid phase pipelines should be buried, they should not be buried, unless there are no other options and burial is the only choice. Normally, burial is not allowed; in special cases, burying violates the relevant regulations
It is generally not buried, but laid via pipe racks. Our unit uses bag pumps for loading, with a set pressure of 2.165 MP.
So I would like to ask everyone again: is it true that the loading pressure should be as high as possible within a certain range, or is there any other perspective on this?
1. The loading pressure should be as low as possible. The lower it is, the more energy-efficient it is; a lower pump head allows for a lower design pressure in the pipes as well. 2. Burial of liquid hydrocarbon pipelines is not recommended. If burial is required, the trench must be filled with sand. 3. Despite the high saturated vapor pressure of propylene, condensate may still exist in the gas-phase equilibrium pipeline.