Dear teachers, is there any good method for adjusting parameters when refining crude oil?
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Our unit has received another type of light oil with a density of 838, which causes the atmospheric distillation column to operate under overload conditions during production, while the vacuum distillation column operates at its minimum capacity (with a residue yield of 10%). So we use heavy crude oil for blending. The ratio of the two oils is controlled by the sizes of the bottom valves used to open the containers respectively. The device’s operation is too unstable; are there any good solutions?
What you’re experiencing is called mixing, and it’s susceptible to the influence of the density, volume, and height of the oil in the two tanks. If it’s difficult to control the amount of oil flowing out of each tank, it leads to unstable operation. It is recommended to use blending, by feeding a smaller amount of oil through a pump into the pipeline for mixing; this can prevent the oils in the two tanks from interacting with each other.