Calculation of oil loading and unloading flow rates! Urgent! ! ! ! ! ! ! ! !
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Dear teachers, I have a question. Our company’s process for loading and unloading oil products is as follows: (1) Loading: product tank – pump – pipeline – loading nozzle – tank truck; (2) Unloading: tank truck – unloading nozzle – pump – raw material storage tank； Question: The planned loading and unloading volume is 30,000 tons per month. The required flow rate for the loading and unloading centrifugal pumps is 100 m3/h, with a head of 76 m. The pipes have a diameter of DN125 and a pressure rating of PN16, and the density of the oil is 800 kg/m3. Question: (1) Do the currently available centrifugal pumps meet these requirements? How to calculate it? (2) Has the rated flow rate of the centrifugal pump taken pipeline losses into account?
How many loading pumps, unloading pumps, raw material tanks, and dip pipes does your company have?
I think you should simply ask the personnel in charge of oil receipt and dispatch at your facility for this answer – after all, there is a designed theoretical value for both oil receipt and dispatch. Your question only outlines the process of oil loading and unloading, but there are many other factors at play: 1. For example, regarding the parking spaces used for loading, how many vehicles can be loaded simultaneously there? ； 2. Speed when passing through the scale room ； 3. Storage capacity of the oil unloading tank ； 4. Will the crude oil return to the plant gradually, or will it all come back at once? ； All these factors affect the speed of oil transfer, not just the pump problem!
As you said, 3 pumps will suffice: 1 unloading pump, 1 loading pump, and 1 spare pump (which can be used for both loading and unloading). It is advisable that the transfer capacity be 1.5 to 3.0 times the designed capacity. You also need to consider pump maintenance, pump series connection, pump parallel connection, production in summer, and production in winter. You also need to consider issues such as tasks being light, heavy, slow, or urgent. You also need to consider the issue of transporting different media.
It’s enough. 30,000 tons is very little!