Method for producing asphalt blending oil by normal pressure distillation of catalytic slurry oil

Abstract

The invention relates to a method for producing asphalt blending oil by normal pressure distillation of catalytic slurry oil. The method comprises the steps of: adding a certain amount of additives, such as a steam partial pressure regulator and an oxidant and the like, into catalytic cracking slurry oil as a raw material, pumping the material into a heat exchanger by an oil pump for preheating; after the material is preheated, conveying the material into a heating furnace for heating to be 360-420 DEG C, and conveying the material into a distillation tower for separating; obtaining a mixture of top light oil and the steam partial pressure regulator at the top of the tower, and if the steam partial pressure regulator is not soluble in the light oil, standing and separating to obtain the light oil; distilling off wax oil from a middle outlet of the tower; obtaining high boiling point heavy oil, as the asphalt blending oil, containing small amounts of catalyst microparticles at the bottom of the tower; and if high boiling point heavy oil not containing powders is needed, removing residual microparticles by a high temperature filter to obtain cleaner high boiling point heavy oil.

Description

technical field [0001] The invention relates to a method for continuously producing bitumen blended oil by using the externally thrown oil slurry of a catalytic cracking production device as a raw material, adding an auxiliary agent for atmospheric distillation, and belonging to the heavy oil treatment technology of petrochemical industry. Background technique [0002] The oil slurry produced in the catalytic cracking process of heavy oil accounts for about 5-10% of the processing capacity of the catalytic cracking unit. Catalytic cracking slurry has high density, small hydrogen to carbon atom ratio, high residual carbon value, high aromatic hydrocarbon content, and short side chain fused ring aromatic hydrocarbons account for more than 70% of the total aromatic hydrocarbons. The catalytic oil slurry contains a small amount of catalyst micro-particles, the content of which is generally about 500-1000 ug / g, and the diameter of the micro-particles is about 5 μm. In operation,...

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Problems solved by technology

[0003] At present, most of the catalytic cracking oil slurry is used as the blending oil of fuel oil. The utilization efficiency of the oil slurry is

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