What are the reasons for the increase in pressure difference in the reaction system of a hydrocracking unit?
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2 million tons of hydrocracking, using feedstocks such as straight-run wax oil and coker wax oil. The pressure difference in the reaction system increased from 2.1 MPa to 2.7 MPa (over about 3 hours); as the flow rate of recycled hydrogen increased, so did the pressure difference. Please ask the teachers to help analyze the reasons. Thank you.
After purifying the cycle hydrogen through displacement, the system pressure difference returned to normal
It would be better to post this in the hydrogenation section of the petrochemical area: lol
Of course, a high flow rate leads to an increased pressure difference; the essence of the pressure difference is pressure friction loss