Method for extracting aluminum oxide from shale oil residue

Abstract

The invention discloses a method for extracting aluminum oxide from shale oil residue. The method comprises the following steps: step 1: preparing shale oil raw material and hydrogen gas, heating theshale oil raw material and the hydrogen gas to 250-300 DEG C, and enabling the heated shale oil raw material and hydrogen gas to pass through a first reaction tank; step 2: after the product flowing out of the first reaction tank is heated, enabling the heated product to pass through a second reaction tank, wherein the reaction temperature of the second reaction tank is 400-420 DEG C; step 3: filling the second reaction tank with a hydrofining catalyst which is in a Raschig ring shape, a porous spherical shape or a bird nest shape, and obtaining a liquid product; and step 4: performing alkalitreatment, filtration, acidification, secondary filtration and purification to obtain aluminum oxide. The reaction temperature of the first reaction tank is 250-300 DEG C. The hydrofining catalyst takes aluminum oxide as a carrier and contains one or more of HCL, Mo, NAOH and Co as hydrogenated active components, and the content of the hydrogenated active components accounts for 35%-15% of the catalyst based on oxide weight.

Description

technical field [0001] The invention relates to a shale oil method, in particular to a method for extracting alumina from shale oil residues. Background technique [0002] Shale oil refers to the petroleum resources contained in shale formations dominated by shale. These include oil in the pores and fractures of shale, as well as oil resources in adjacent and interlayers of tight carbonatite or clastic rock in shale formations. [0003] Usually effective development methods are horizontal wells and staged fracturing techniques. In the field of solid minerals, shale oil is a kind of artificial petroleum, which is a brown viscous liquid product with a special pungent smell produced by thermal decomposition of organic matter during shale dry distillation. [0004] The kerogen in oil shale is converted into synthetic crude oil through cracking chemical changes. Heating oil shale to a certain temperature separates the vapors, which by distillation produce petroleum-like shale ...

AI Technical Summary

Problems solved by technology

The shale oil produced in Fushun, Maoming, China, and Green River in the United States has relatively high hydrogen and carbon atoms, which is suitable for processing and producing light oil products; but due to its high nitrogen content, it is difficult to process and refine Must be removed, otherwise it will affect the quality of oil