Questions about hydrogenation? ? ?
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During the initial operation of the raw material buffer tank, 0.6 MPa of nitrogen is used to raise and maintain the pressure (for nitrogen sealing); once the pressure reaches the normal operating level, measures are in place to protect against non-condensable gases. What kind of awareness is this? Why is nitrogen sealing required – is it due to operational requirements, or is there some other purpose? Is nitrogen being filled into the raw material tank in advance before oil is introduced?
During the initial operation of the raw material buffer tank, 0.6 MPa of nitrogen is used to raise and maintain the pressure (for nitrogen sealing); once the pressure reaches the normal operating level, measures are in place to protect against non-condensable gases. This is a safety measure aimed at isolating oil and gas from the atmosphere, increasing the pressure at the inlet of the feed pump, and preventing cavitation. No nitrogen sealing is needed; what gas should be used? Nitrogen is filled into the raw material tank in advance before oil is introduced.
It feels like I’m helping again; last time it was you who helped me solve the problem with petroleum fractions. Can I leave my contact information? If you have any more questions, feel free to ask again! Thank you
Was the figure for petroleum distillates last time a standard for measuring gasoline? Did I forget to ask last time?
Nitrogen is used for airtightness testing; this is done for safety reasons, and in the event of any air leakage, it can be addressed immediately
Prevent oxygen from entering; exposure to oxygen causes the raw material to oxidize and turn into a gelatinous substance
It can be said that adding inert gases such as nitrogen helps prevent oxidation and provides protection by isolating the oil and gas from the atmosphere. At the same time, pressurizing the tank increases the pressure at the inlet of the feed pump, thereby preventing cavitation. It is sealed with nitrogen because nitrogen is relatively inexpensive and has good physicochemical stability. Other inert gases are not easily available and are also relatively expensive. It has poor physicochemical stability. It is best to fill the raw material tank with nitrogen in advance before feeding in the oil. It is also possible to introduce oil while supplying nitrogen, as long as the pressure inside the tank is kept at a normal level.
Once operations are back to normal, desulfurized fuel gas can be used instead. Additionally, increasing the pressure in the crude oil tank can reduce the current required by the reaction feed pump, thereby cutting down electricity consumption; this approach can be tried if conditions permit.
Thank you, the explanation was very comprehensive; I now fully understand. I’ve been busy with work these past two days and haven’t been able to thank you in time; please forgive me
Thank you, I appreciate everyone’s help in solving the problem. Understood