The invention relates to a process method for preparing
marine fuel oil on the basis of catalytic
cracking oil
slurry desolidification-hydrogenation and belongs to the technical field of
petroleum processing. According to the method, a
solvent which is mutually soluble with oil
slurry is used as a desolidification
adjuvant of the catalytic
cracking oil
slurry to realize low-temperature desolidification, and the oil slurry which is subjected to desolidification and hydrogenation control is used as a
fuel oil component to be compounded with a conventional
marine fuel component. The process method for preparing the
marine fuel oil on the basis of the catalytic
cracking oil slurry desolidification-hydrogenation comprises the steps of oil slurry desolidification, hydrogenation and oil preparation, wherein under the condition of 40-60 DEG C, the catalytic cracking oil slurry is mixed with a
diluent, separated, subjected to
slag removal and then distilled to obtain desolidified oil slurry; under the action of a catalyst adopting
nickel oxide and
molybdenum oxide as
active components and
alumina as a carrier, the desolidified oil slurry is catalytically hydrogenated under the conditions that the
space velocity is 0.25-0.5 h<-1>, the temperature is 350-370 DEG C, the pressure reaches 6-10 Mpa, and a
hydrogen-oil volume ratio reaches (600-650):1. The method has the advantages that fewerimpurities and
charcoal residues are generated, the equipment investment and the process cost are low, and the marine fuel cost is significantly reduced while the
combustion performance of oil products is maintained; therefore, the process method is particularly suitable for manufacturing and
processing high-performance
fuel oil.