Treatment during the commissioning of the top circulation system
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Is it necessary to expel air from the distillation tower top circulation system at startup? If necessary, how can gasoline be filled into the system while there is steam present after air has been expelled?
Before starting up, pipeline purging includes removing air; after normal oil collection, the steam turns into water, and it’s sufficient to drain off the water from the lowest points.
After the pipeline sightline purging is complete, isn’t it necessary to relieve the pressure in the system? Won’t air enter the system again when pressure is released?
Should the system be kept at a slight positive pressure? In that case, there won’t be much water in the system after it’s filled with oil
After steam purging, the pipeline is hot and contains almost no water; after pressure is released, gasoline is injected. Here we maintain a system pressure of 0.3 Mpa, then let it stand to remove water, and afterward pressurize it again to remove water
Is it to maintain a pressure of 0.3 MPa inside the system after the steam penetration test, and then fill it with gasoline?