Hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, which is applied in the field of oil refining, can solve the problems of affecting the yield of target products and reducing the selectivity of catalysts, and achieve high selectivity, reduce possibility, and improve the effect of acidity on the outer surface

Active Publication Date: 2019-06-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the silicotungstate loaded in the pores of the catalyst will cause a secondary cracking reaction of some products, which will reduce the selectivity of the catalyst and affect the yield of the target product.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Preparation of Mo-Co-P aqueous solution:

[0055] 1.9g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL of water, then added 5.2g of molybdenum trioxide and 1.9g of basic cobalt carbonate, heated to 100°C and stirred and refluxed for 2.0h, filtered and set to 100mL to obtain Mo-Co-P aqueous solution. where MoO 3 The concentration is 0.05g / mL, Co 2 o 3 The concentration of P is 0.01g / mL, and the concentration of P is 0.005g / mL.

[0056] (2) Preparation of catalyst:

[0057] 45g alumina carrier (pore volume 0.70mL / g, specific surface area 300m 2 / g, cylindrical shape, diameter 0.8mm) was added to 100mL aqueous solution containing 18g citric acid, dried at 70°C for 8h; Dry at 70°C for 8 hours; mix 100mL Mo-Co-P aqueous solution with 100mL aqueous solution containing 33.1g phosphotungstic acid, add to the above material, mix well and dry at 70°C for 4h, then heat up to 110°C and dry for 4h. Prepare catalyst precursor A; then add it to 150mL...

Embodiment 2

[0063] (1) Preparation of Mo-Co-P aqueous solution:

[0064] 3.8g phosphoric acid H 3 PO 4 (Concentration 85 wt%) was dissolved in 80mL of water, then added 10.4g molybdenum trioxide and 4.8g basic cobalt carbonate, heated to 100°C and stirred and refluxed for 2.0h, filtered and set to 100mL to obtain Mo-Co-P aqueous solution. where MoO 3 The concentration is 0.1g / mL, Co 2 o 3 The concentration of P is 0.025g / mL, and the concentration of P is 0.01g / mL.

[0065] (2) Preparation of catalyst:

[0066] 46.2g alumina carrier (pore volume 0.70mL / g, specific surface area 300m 2 / g, cylindrical strip shape, diameter 0.8mm) was added to 100mL aqueous solution containing 23.1g citric acid, dried at 70°C for 8h; Then dry at 70°C for 8 hours; mix 100mL Mo-Co-P aqueous solution with 50mL aqueous solution containing 18.1g phosphotungstic acid, add to the above materials, mix well and dry at 70°C for 4h, then heat up to 110°C and dry for 4h , to prepare catalyst precursor A; then add...

Embodiment 3

[0072] (1) Preparation of Mo-Co-P aqueous solution:

[0073] 7.6g phosphoric acid H 3 PO 4 (concentration 85 wt%) was dissolved in 80mL of water, then added 20.8g of molybdenum trioxide and 9.6g of basic cobalt carbonate, heated to 100°C and stirred and refluxed for 2.0h, filtered and set to 100mL to obtain Mo-Co-P aqueous solution. where MoO 3 The concentration is 0.2g / mL, Co 2 o 3 The concentration of P is 0.05g / mL, and the concentration of P is 0.02g / mL.

[0074] (2) Preparation of catalyst:

[0075] 37.2g alumina carrier (pore volume 0.70mL / g, specific surface area 300m 2 / g, cylindrical strip shape, diameter 0.8mm) was added to 100mL aqueous solution containing 11.2g citric acid, dried at 70°C for 8h; Then dry at 70°C for 8h; mix 100mL Mo-Co-P aqueous solution with 50mL aqueous solution containing 6.7g phosphotungstic acid, add to the above material, mix well and dry at 70°C for 4h, then heat up to 110°C and dry for 4h , to prepare catalyst precursor A; then add ...

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Abstract

The invention discloses a hydrocracking catalyst and a preparation method thereof, wherein the hydrocracking catalyst comprises an acidic component, a hydrogenation metal component, an auxiliary agentand a carrier, the acidic component is a heteropoly acid ammonium salt, the hydrogenation metal component is one or a plurality of materials selected from Group VIB metals and / or Group VIII metals, Pis an auxiliary agent, and the carrier is an alumina and silica composite carrier. The invention further provides a preparation method of the hydrocracking catalyst. According to the present invention, the catalyst obtained by the method exhibits high reactivity and high liquid-state hydrocarbon selectivity in the hydrocracking reactions of long chain alkanes.

Description

technical field [0001] The invention belongs to the field of oil refining, and relates to a catalytic material and a preparation method thereof, in particular to a hydrogenation catalyst and a preparation method thereof. Background technique [0002] In the oil refining industry, hydrocracking is an important process for producing high-quality light oil products from heavy oil. A transformation process of chemical reactions such as rearrangement and cleavage. The hydrocracking process can not only produce high-quality light oil products, but also has a high yield of liquid phase products. The core of its technology is the catalyst. The hydrocracking catalyst is a dual-function catalyst, which has both the acid function and the hydrogenation function. The acid function of the hydrocracking catalyst involved in US5,536,687, US5,447,623 and EP0028938A1 is mainly provided by molecular sieves, and the hydrogenation component is selected from Mo-Ni or W-Ni. The catalyst involve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/18B01J27/188B01J35/10C10G47/12
Inventor 金浩朱慧红孟兆会葛海龙杨光孙素华杨涛
Owner CHINA PETROLEUM & CHEM CORP
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