A kind of hydrodepreciation catalyst and preparation method thereof

A technology for depressurization of hydrogen and catalyst, which is used in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc.

Active Publication Date: 2016-08-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the catalyst has a certain hydrorefining function, it only uses a small amount of the catalyst as a binder and uses alumina as a refining carrier, which has certain limitations.

Method used

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  • A kind of hydrodepreciation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Catalyst Preparation

[0031] 22.4g dry basis content 67wt% small hole alumina (specific surface area is 290m 2 g -1 , pore volume 0.48mL·g -1 ) and 1.5mol / L, 65mL nitric acid aqueous solution were stirred to prepare peptized binder. 45g dry basis content 67wt% macroporous alumina (specific surface 320m2 g -1 , pore volume 1.10mL·g -1 ) and hydrogen nano ZSM-5 molecular sieve 41.2g (grain size is 50nm, specific surface area is 380m 2 g -1 , Manufacturer: Tianjin Shenneng Technology Co., Ltd., SiO 2 / Al 2 o 3 Mole ratio = 25, 97% by weight on a dry basis) was mixed with the above-mentioned peptized binder. Add 1% of the extruding aid squash powder based on the weight of the dry basis of the catalyst to the above mixture, knead and extrude, then dry at 100°C for 4 hours, and roast at 580°C for 6 hours to obtain the carrier. The carrier is impregnated with an equal volume of 70mL impregnation solution containing 12.0g ammonium metatungstate (tungsten oxide 83w...

Embodiment 2

[0036] 1. Catalyst Preparation

[0037] 15g dry basis content 67wt% small hole alumina (specific surface area is 290m 2 g -1 , pore volume 0.48mL·g -1 ) and 1.5mol / L, 65mL nitric acid aqueous solution were stirred to prepare peptized binder. 44.7g dry basis content 67wt% macroporous alumina (specific surface area is 350m 2 g -1 , pore volume 0.87mL·g -1 ) and hydrogen nano ZSM-5 molecular sieve 46.4g (grain size is 70nm, specific surface area is 360m 2 g -1 , Manufacturer: Tianjin Shenneng Technology Co., Ltd., SiO 2 / Al 2 o 3 Mole ratio = 50, 97% by weight on a dry basis) was mixed with the above-mentioned peptized binder. Add 1% extrusion aid carbon black to the above mixture, knead and extrude, then dry at 100°C for 4 hours and calcined at 580°C for 6 hours to obtain the carrier. The above carrier is impregnated with an equal volume of 65mL impregnating solution containing 12.0g ammonium metatungstate (tungsten oxide content 83wt%) and 20.8g nickel nitrate (nicke...

Embodiment 3

[0041] 1. Catalyst Preparation

[0042] The specific preparation process is the same as in Example 1, except that the catalyst proportioning ratio is different. Small pore alumina 15.0g; macroporous alumina 44.7g, hydrogen nano ZSM-5 molecular sieve 51.5g (grain size is 80nm, specific surface area is 360m 2 g -1 , Manufacturer: Tianjin Shenneng Technology Co., Ltd., SiO 2 / Al 2 o 3 Molar ratio=80, dry basis 97wt%), ammonium metatungstate (tungsten oxide 83wt%) 8.4g, nickel nitrate (nickel oxide 24wt%) 12.5g, obtain catalyst C, its properties are shown in Table 1.

[0043] 2. Process evaluation

[0044] Process conditions are the same as in Example 1, and the reaction results are shown in Table 2.

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Abstract

The invention discloses a hydrodecondensation catalyst and a preparation method thereof. Based on the weight of the catalyst, the composition of the catalyst is as follows: the content of tungsten oxide is 5% to 10%, the content of nickel oxide is 1% to 5%, the content of nano ZSM-5 molecular sieve is 40% to 50%, and the content of macroporous alumina The content is 10% to 40%, and the rest is binder. The catalyst is obtained by kneading and kneading nano ZSM-5 molecular sieve, macroporous alumina and binder to form a carrier, then impregnating and supporting active metals, and finally undergoing hydrothermal treatment. The hydrodepreciation catalyst of the present invention not only has a good shape-selective catalytic function, but also has a good hydrofinishing function, and is especially suitable for the hydrofinishing of waxy hydrocarbon oil raw materials with high impurities such as sulfur and nitrogen. and decondensation process.

Description

technical field [0001] The present invention relates to a hydrodepressing catalyst and a preparation method thereof, in particular to a hydrodepreciating catalyst with a hydrofining function and a preparation method thereof. The catalyst is used in the process of hydrodecondensation or hydrodecondensation of waxy hydrocarbon raw materials, and is especially suitable for the process of hydrodecondensation of raw materials containing high S and N impurities. Background technique [0002] "Hydrodecondensation" means that in the presence of hydrogen, the waxy hydrocarbon feedstock reacts on the surface of the catalyst to reduce the content of wax molecules therein. The principle of dewaxing is that under certain operating conditions, the raw material is mixed with hydrogen and contacted with the hydrogen decondensation catalyst. High freezing point components such as aromatics are selectively cracked into small molecules, while other components are basically unchanged, and the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/48
Inventor 高鹏孟祥兰李永泰于庆新郭晓明
Owner CHINA PETROLEUM & CHEM CORP
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