Oil slurry sedimentation agent and preparation method thereof

Abstract

The invention provides an oil slurry sedimentation agent and a preparation method thereof. The method comprises the following step: uniformly mixing the following components percentage by mass: 70 percent to 80 percent of polyether, 15 percent to 25 percent of a high flashing point solvent and 1 percent to 10 percent of polypropylene glycol. The oil slurry sedimentation agent provided by the invention can be used for remarkably improving the sedimentation speed and the removal efficiency of catalyst fine powder and the removal rate reaches 90 percent or more; the preparation method provided bythe invention is simple in technology and low in cost and no wastewater is generated; damages to the environment are not caused; meanwhile, the oil slurry modification potential is greatly improved;equipment investment does not need to be additionally increased; the oil slurry sedimentation agent can be normally used under the turbulent condition that an oil tank is heated and also can be suitable for a novel catalyst used in a refinery at present.

Description

technical field [0001] The invention relates to an oil slurry sedimentation agent and a preparation method thereof. Background technique [0002] FCC oil slurry is also called clarified oil, which is a heavy oil product from the bottom of the main fractionation tower of the FCC unit. The oil slurry consists of unconverted hydrocarbons with a boiling point range of 343-593°C. It contains fine powdered silica-alumina catalysts in granular form and also contains up to 90% fused-ring aromatic (PNA) compounds. For FCC slurries, all upgrading end uses require removal of fines to achieve maximum value. For example, catalyst fines in carbon black can disrupt the carbon black production process; catalyst fines in fuel oil can cause valve plugging and engine damage; Severe abrasion and fouling of heating furnace tubes. [0003] At present, the methods usually used to remove fine powder mainly include natural sedimentation method, electrostatic separation method, filtration separat...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects of the oil slurry sedimentation agent in the prior art, such as high viscosity, heating when the temperature is low, long production cycle, poor use effect, etc., to provide an oil slurry sedimentation agent and its preparation method