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A kind of trimodal pore distribution hydrodemetallization catalyst and preparation method thereof

A hydrodemetallization and catalyst technology, which is applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, catalyst carrier, etc., can solve the problems of low alumina pore volume, etc. The effect of continuous and improved activity

Active Publication Date: 2020-12-04
SINOCHEM QUANZHOU PETROCHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alumina with trimodal pore distribution prepared by this method has a low pore volume and a large amount of alkali metal sodium, which is not suitable as a catalyst for heavy oil hydrotreating

Method used

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  • A kind of trimodal pore distribution hydrodemetallization catalyst and preparation method thereof
  • A kind of trimodal pore distribution hydrodemetallization catalyst and preparation method thereof
  • A kind of trimodal pore distribution hydrodemetallization catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 144 g of commercially available pseudo-boehmite P1 and 71 g of commercially available pseudo-boehmite P2, respectively, add 4.5 g of celadonite powder, and mix well. Add 250 g of dilute nitric acid solution (containing 3.0 g of nitric acid), knead it into a plastic body, and then extrude it into a four-leaf clover-shaped strip with a diameter of 1.3 mm on an extruder. The wet strip was dried at 120 °C for 4 h, and kept at 900 °C in a calcination furnace for 2 h to obtain alumina carrier A1.

[0024] Weigh 80 g of alumina carrier A1 and place it in a hydrothermal kettle. Weigh 8 g of deionized water into a glass. The glass is placed in a kettle of water. After sealing the hydrothermal kettle, put it into an oven, raise it to 220 °C, and conduct a constant temperature hydrothermal treatment for 6 h. The hydrothermally treated samples were dried at 120 °C for 4 h, and kept at a constant temperature of 500 °C for 2 h in a calcination furnace to obtain the hydrother...

Embodiment 2

[0026] Weigh 80 g of alumina carrier A1 and place it in a hydrothermal kettle. Weigh 20 g of deionized water into a glass. The glass is placed in a kettle of water. After sealing the hydrothermal kettle, put it into an oven, raise it to 220 °C, and perform constant temperature hydrothermal treatment for 6 hours. The hydrothermally treated samples were dried at 120 °C for 4 h, and kept at a constant temperature of 500 °C for 2 h in a calcination furnace to obtain the hydrothermally treated alumina carrier B2. The pore volume and pore size distribution are shown in Table 1.

Embodiment 3

[0028] Weigh 80 g of alumina carrier A1 and place it in a hydrothermal kettle. Weigh 40 g of deionized water into a glass. The glass is placed in a kettle of water. After sealing the hydrothermal kettle, put it into an oven, raise it to 220 °C, and conduct a constant temperature hydrothermal treatment for 6 h. The hydrothermally treated samples were dried at 120 °C for 4 h, and kept at a constant temperature of 500 °C for 2 h in a calcination furnace to obtain the hydrothermally treated alumina carrier B3. The pore volume and pore size distribution are shown in Table 1.

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Abstract

The invention discloses a hydrodemetallization catalyst and a preparation method thereof. The catalyst has a three-peak pore distribution structure with a pore volume of 0.5-1.3 mL / g and a specific surface area of 50-200 m<2> / g; the pore volume with a pore diameter less than 50 nm accounts for 30-50% of a total pore volume; the pore volume with the pore diameter of 50-100 nm accounts for 10-30% ofthe total pore volume; and the pore volume with the pore diameter more than 100 nm accounts for 30-50% of the total pore volume. Compared with the prior art, the novel preparation method of the hydrodemetallization catalyst with the three-peak pore distribution is adopted by the invention, hydrothermal treatment is performed on alumina carriers with bimodal pore distribution, and transitional pores between mesopores and macropores are manufactured, so that the lack of pores between the mesopores and the macropores is compensated. The three-peak pore distribution hydrodemetallization catalystprepared with the method provided by the invention is more suitable for heavy oil ( such as residual oil and the like) hydrodemetallization and deasphalting catalysts.

Description

technical field [0001] The invention relates to a hydrogenation demetallization catalyst with trimodal pore distribution and a preparation method thereof. Background technique [0002] In recent years, as crude oil resources become heavier, the demand for fuel oil consumption increases and environmental regulations become increasingly stringent, hydrogenation technology is used to convert heavy oil, including residual oil, into high-quality light fuel oil and chemical Products, which help to increase the depth of crude oil processing, reduce environmental pollution, increase the yield of light oil and improve product quality, etc. [0003] The residual oil is rich in most of the sulfur, nitrogen, polycyclic aromatic hydrocarbons and metals (mainly Fe, Ni and V, etc.) in the crude oil. Different from desulfurization and denitrification, metals such as Fe, Ni, and V will gradually deposit in the catalyst pores after hydrogenation and removal, covering the catalytic active sit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J35/10B01J32/00B01J21/04B01J27/19C10G45/08B01J37/02B01J37/08B01J37/10
CPCB01J21/04B01J23/002B01J27/19B01J35/1014B01J35/1019B01J35/1042B01J35/1047B01J35/1057B01J35/1061B01J35/1095B01J37/0201B01J37/082B01J37/10B01J2523/00C10G45/08C10G2300/205B01J2523/51B01J2523/68B01J2523/847
Inventor 徐景东车晓瑞王娇红
Owner SINOCHEM QUANZHOU PETROCHEM CO LTD
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