Being deviation from low null containing low oil feed composition deviation from low

摘要

(57) Abstract The hot containing low oil feed (101) the low temperature filtrate (109), continuously making the refrigerant contact first with indirect heat exchange, composition deviation from low manner of the containing low oil feed in order it makes crystallize and makes precipitate low in the oil feed and, including the process which forms the oil/composition/low blend, becomes, to obtain the petroleum type lube raw materials. The low temperature composition (106) with diluting the oil/composition/low blend, you adjust the viscosity of the blend, percolate the blend and separate low from the oil/composition/low blend. The low temperature low cake (112) you recover, the low temperature oil/the composition filtrate stream (108) recover. The oil of low temperature/the composition filtrate stream at percolation temperature is supplied to the choice transmitted film. The film the low temperature composition transmitted stream (109) with, the low temperature filtrate stream which contains dewaxing oil and the residual composition (106) with separates the low temperature filtrate choice.