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Hydrogenation catalyst carrier and production thereof

A hydrogenation catalyst and carrier technology, which is applied in the direction of catalyst carriers, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low oil selectivity, poor operation flexibility, low catalyst activity, etc., to maintain yield efficiency, improved product properties, and good cracking effect

Active Publication Date: 2005-12-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the activity and medium oil selectivity of this catalyst are significantly improved compared with the previous amorphous silica-alumina catalysts, and it has the characteristics of producing the most low-point diesel oil, but the reaction temperature is still high, and the operation flexibility is poor, which is difficult to meet the production requirements. The manufacturer needs to increase the processing capacity of the device and further increase the production of diesel oil
[0008] Chinese patent ZL 97116403.7 introduces a medium oil type hydrocracking catalyst, with modified β molecular sieve, amorphous silica-alumina and alumina as the carrier, wherein the content of β molecular sieve is relatively high, and the preferred content of β molecular sieve in the catalyst is 10w% to 30w%. In the examples, the content of β molecular sieve is more than 10w%, and it is a β molecular sieve of conventional particle size. The secondary cracking rate is relatively high. Although there is high activity in single-stage hydrocracking, the selectivity of medium oil is low.
Because the silicon-aluminum ratio of the molecular sieve used in the catalyst is too high, the activity of the catalyst is low, and the selectivity of medium oil is not very high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 227.1 g of amorphous silica-alumina (SiO 2 The content is 45w%, the pore volume is 0.75ml / g, and the specific surface area is 390m 2 / g), 18.8 grams of modified β molecular sieves, 65.8 grams of macroporous alumina (the pore volume is 1.0ml / g, and the specific surface area is 460m 2 / g) into the roller compactor, mixed for 30 minutes, then add 288.5 grams of binder (with a pore volume of 0.4ml / g and a specific surface area of ​​280m 2 / g of small-pore alumina 107.1g, HNO 3 Molar ratio to alumina is 0.3), rolling for 30 minutes, then add 60 ml of water, continue rolling until the paste can be extruded, extruded, and dried at 110°C for 6 hours. The dried strips were heated up to 580° C. and calcined for 4 hours to obtain the carrier. The carrier was impregnated with an impregnating solution containing tungsten and nickel at room temperature for 2 hours, dried at 120°C for 6 hours, and calcined at 480°C for 4 hours at programmed temperature to obtain catalyst A. The ph...

Embodiment 2

[0039] 252.8 grams of amorphous silicon aluminum (SiO 2 The content is 65w%, the pore volume is 0.58ml / g, and the specific surface area is 340m 2 / g), 9.4 grams of modified β molecular sieves, 41.1 grams of macroporous alumina (pore volume is 0.75ml / g, specific surface area is 360m 2 / g) put into the roller compactor and mix for 20 minutes, then add 323.1 grams of binder (with a pore volume of 0.45ml / g and a specific surface area of ​​300m 2 / g small pore alumina 120.0g, HPO 3 The molar ratio to alumina is 0.2), continue rolling for 40 minutes, then add 55 ml of water, roll until the paste can be extruded, extrude, and dry the extruded strips at 140°C for 3 hours. The drying strip was heated to 530° C. and calcined for 5 hours to obtain the carrier. The carrier was impregnated with an impregnation solution containing tungsten and nickel at room temperature for 4 hours, dried at 130°C for 3 hours, and then calcined at 460°C for 5 hours to obtain catalyst B. The physical and...

Embodiment 3

[0042] 201.4 g of amorphous silica-alumina (SiO 2 The content is 30w%, the pore volume is 0.89ml / g, and the specific surface area is 460m 2 / g), 31.3 grams of modified β molecular sieves, 82.8 grams of macroporous alumina (same as Example 1) were put into the roller compactor and mixed for 40 minutes, then added 265.4 grams of binding agent (same as Example 1), and continued Roll for 25 minutes, then add 30 milliliters of water, roll to extrude paste, extrude, and extrude at 130°C for 4 hours. The drying strip was heated up to 680° C. and calcined for 2.5 hours to obtain the carrier. The carrier was impregnated with an impregnation solution containing tungsten and nickel at room temperature for 8 hours, dried at 130°C for 4 hours, and calcined at 530°C for 3 hours to obtain catalyst C. The physical and chemical properties are shown in Table 1.

[0043] The properties of the modified β molecular sieve are: molecular sieve SiO 2 / Al 2 o 3 Weight ratio 85, specific surface ...

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PUM

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Abstract

A carrier of hydrocatalyst for the hydrocracking of heavy oil, hydromodifying of poor diesel oil, etc is prepared from amorphour silicon aluminium, modified beta-molecular sieve and aluminium oxide. Its preparing process is also disclosed. Said catalyst has high catalytic activity.

Description

technical field [0001] The invention relates to a hydrogenation catalyst carrier and a preparation method thereof, in particular to a petroleum fraction hydrogenation catalyst carrier and a preparation method thereof. Background technique [0002] The carrier is an important part of the catalyst, which usually not only provides a dispersion place for the metal active components, but also participates in the reaction itself, and completes the entire catalytic reaction together with other active components. In petroleum distillate hydrogenation catalysts, the carrier containing amorphous silica-alumina and molecular sieve has the above-mentioned dual functions. Therefore, the properties of the catalyst support have an important effect on the final catalyst. Existing hydrogenation catalyst supports generally contain amorphous silica-alumina, molecular sieves, alumina, and other refractory oxides. The hydrogenation catalyst carrier containing amorphous silica-alumina and molec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00
Inventor 王凤来关明华杜艳泽王刚
Owner CHINA PETROLEUM & CHEM CORP
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