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Preparation method of hydrodemetalization catalyst for heavy oil

A heavy oil hydrogenation and demetallization technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of poor mechanical strength and is not suitable as a catalyst carrier and other problems, to achieve the effect of improving the demetallization activity

Active Publication Date: 2014-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, although some alumina supports prepared in the prior art have larger pore volume and pore diameter, they are not suitable as catalyst supports due to poor mechanical strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] The specific preparation process of the preparation method of heavy oil hydrodemetallization catalyst of the present invention is as follows:

[0016] (1) Weigh a certain amount of pseudo-boehmite dry rubber powder, mix it with an appropriate amount of peptizer and extrusion aid, then add an appropriate amount of ammonium bicarbonate aqueous solution to the above material, knead the obtained material into a plastic body, and extrude Molding, the wet material after molding is placed in a sealed tube furnace and dried at 70-120°C for 5-10 hours, and the dry material is roasted at 600-750°C for 2-4 hours to obtain an alumina carrier.

[0017] (2) Weigh an appropriate amount of the above carrier, add an appropriate amount of a solution containing Group VIB metal and Group VIII metal salt for 2 to 4 hours, filter off the excess solution, dry at 120°C for 1 to 4 hours, and then bake at 550°C for 1 hour ~5 hours to prepare the hydrodemetallization catalyst of the present inven...

example 1

[0019] (1) Weigh 150 g of pseudo-boehmite dry rubber powder (produced by Shenyang Catalyst Factory, with an alumina dry basis content of 65%) and mix them with 2 g of scallop powder, add a small amount of aqueous solution containing 3 g of nitric acid and knead evenly, and then add to the above Adding an appropriate amount of mass concentration in the material is an aqueous solution of 40% ammonium bicarbonate to make the NH 4 + and Al 3+ The molar ratio is 0.5:1, knead the obtained material into a plastic body, extrude into a strip, put the formed wet material in a sealed tube furnace at a constant temperature of 70°C for 9 hours, and dry the material at 750°C for 2 hours. Alumina carrier: Weigh 100 grams of the above-mentioned alumina carrier, add 150 ml of impregnating solution containing 65 grams of ammonium molybdate and 75 grams of cobalt nitrate for immersion for 2 hours, filter off excess solution, dry at 120°C for 2 hours, and then dry at 550°C Calcined at lower tem...

example 2

[0021] With example 1, just adding an appropriate amount of mass concentration is the ammonium bicarbonate aqueous solution of 80%, makes NH 4 + and Al 3+ The molar ratio of the obtained material is 0.6:1, the obtained material is kneaded into a plastic body, extruded into a strip, and the formed wet material is placed in a sealed tube furnace at a constant temperature of 120°C for 5 hours to obtain an alumina carrier; Add 100 grams of aluminum carrier, add 250 ml of immersion solution containing 45 grams of ammonium molybdate and 38 grams of cobalt nitrate and soak for 2 hours, filter off the excess solution, dry at 120°C for 2 hours, and then roast at 550°C for 5 hours to obtain the present invention. Hydrodemetallization Catalyst C2.

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PUM

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Abstract

The invention discloses a preparation method of a hydrodemetalization catalyst for heavy oil. The method includes the following steps: weighing a certain amount of a pseudo-boehmite dry glue powder; evenly mixing the powder with a amount of a peptizator and an extrusion aid; then adding an appropriate amount of ammonium bicarbonate solution to the above materials; kneading the materials into a plastic body; extruding the plastic body into a strip shape; treating the molded material with hot water in a sealed container and roasting to obtain an alumina carrier; and loading active metal components Mo and Ni by using the alumina as a carrier through an impregnation method to prepare the hydrodemetalization catalyst for heavy oil. The hydrodemetalization catalyst for residuum prepared by the method has high activity and good stability, and is suitable for industrial application.

Description

technical field [0001] The invention relates to a preparation method of a heavy oil hydrogenation demetallization catalyst. Background technique [0002] With the continuous reduction of oil resources and the increasing trend of heavy and inferior crude oil, heavy oil deep processing technology has been highly valued by refiners at home and abroad. Hydrodemetallization catalysts used for heavy oil, especially vacuum residue with high metal content, are prone to rapid decline and deactivation of catalyst activity due to the deposition of metal impurities such as nickel and vanadium. Catalysts with larger pore volume and pore diameter are conducive to the diffusion of macromolecular reactants and the deposition of metal impurities, and improve the activity of hydrodemetallization, and are often used in heavy oil processing. [0003] US4448896 discloses a hydrodesulfurization and demetallization catalyst, its pore distribution has characteristic peaks at two places where the p...

Claims

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Application Information

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IPC IPC(8): B01J23/882B01J23/883C10G45/08
Inventor 季洪海沈智奇凌凤香王少军杨卫亚王丽华郭长友
Owner CHINA PETROLEUM & CHEM CORP
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