Production method of low-sulfur marine fuel oil

Abstract

The invention discloses a production method of a low-sulfur marine fuel oil. The production method comprises the following steps: mixing catalytic slurry oil with a first additive, carrying out settling separation after the mixing treatment, obtaining a first material and residues after the separation; introducing the first material into a hydro-processing unit, carrying out a hydrogenation reaction under the action of a hydro-processing catalyst and hydrogen, introducing a liquid-phase effluent obtained after the reaction into a clarification unit, subjecting clarified oil to solid-liquid separation to obtain purified oil slurry, and mixing the purified oil slurry with an inferior raw material (hydrogenation tail oil) to obtain the low-sulfur marine fuel oil. According to the method, thesolid content and the sulfur content of the catalytic slurry oil can be reduced, high-quality purified slurry oil is produced, and the high-quality purified slurry oil is blended with residual oil toproduce the insufficient low-sulfur marine fuel oil.

Description

technical field [0001] The invention belongs to the field of refining and chemical industry, and in particular relates to a process for producing low-sulfur marine fuel oil. Background technique [0002] The MAPPOL Convention provides detailed regulations on the control area of ​​sulfur content in fuel oil used by ships and the limit value and implementation time of fuel oil sulfur content. It should not exceed 0.5%; when navigating in emission control areas, the sulfur content of fuel oil used on board should not exceed 0.1%. Through investigation and research, it is found that if the requirements for the use of low-sulfur fuel oil in the MAPPOL Convention are strictly implemented, the annual demand for low-sulfur fuel oil will be about 3 million tons. High, there are almost no refineries in the world that can produce fuel oil with a sulfur content of 0.5% or even less than 0.1%. There is a large gap in the low-sulfur fuel oil market, and manufacturers have an urgent need ...

AI Technical Summary

Problems solved by technology

[0008] The catalytic oil slurry obtained by catalytic cracking of heavy oil has the problems of high solid content and small particle size. When the catalytic oil slurry is treated by conventional filtration and other means, there will be high liquid yield loss, incomplete removal of catalyst powder, easy blockage of filter, and backwashing. Frequent and unstable operation of the filter device, therefore, most of the catalytic oil slurry can only be used as the feed of the coking unit at present, and at the same time, a large amount of low-value coke is produced by-product, and the value of the catalytic oil slurry cannot be fully utilized

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