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Hydrodemetalizing catalyst and its prepn

A hydrodemetallization and catalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem of reducing the number of active centers, accelerating the loss of active components, and increasing the aggregation of active components. problems, to achieve the effect of high carbon capacity and metal capacity, good hydrothermal stability, and improved thermal and hydrothermal stability

Inactive Publication Date: 2007-11-07
林方 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the hydrodemetallization process of hydrocarbons (such as coal tar light fractions) with high oxygen content (high water pressure during hydrogenation reaction), the hydrodemetallization catalyst is required to have good hydrothermal stability, and the above hydrogenation Demetallization catalysts are all aimed at petroleum fractions with relatively low oxygen content (the oxygen content is usually less than 0.1%), and do not consider the high oxygen content (such as the oxygen content of the light fraction of coal tar as high as 11%), which will cause high water pressure in the hydrogenation process. question
The high water pressure in the process of hydrodemetallization will inevitably lead to the accelerated loss of active components of the demetallization catalyst, the aggregation of the active components of the demetallization catalyst, which will reduce the number of active centers and reduce the strength of the catalyst.
Hydrodemetallization catalysts specifically targeting hydrocarbons with high oxygen content have not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Weigh 200g of aluminum hydroxide dry rubber powder, add 12g of phosphoric acid, 31g of magnesium nitrate, 6.1g of potassium nitrate, and appropriate amount of water, mix well, add to the mold, and press into Raschig rings with a diameter of 1.5-3.0mm. Then dry at 110°C for 3h, and bake at 850°C for 4h.

[0038] 16g of ammonium molybdate and an appropriate amount of deionized water were prepared into a solution, saturated impregnated the obtained carrier, dried at 110°C for 4 hours, and calcined at 530°C for 4 hours to prepare the catalyst A of the present invention.

Embodiment 2

[0040] The demetallization catalyst carrier containing Mg and K is the same as in Example 1, and the calcination temperature is 750°C.

[0041] 20g of ammonium molybdate, 12g of nickel nitrate, an appropriate amount of ammonia water and deionized water were prepared into a solution, saturated impregnated the prepared carrier, dried at 110°C for 4 hours, and calcined at 530°C for 4 hours to obtain the catalyst B of the present invention.

Embodiment 3

[0043] The demetallization catalyst carrier containing Mg and K is the same as in Example 1, except that 8.0 g of carbon black powder, 4.5 g of polyvinyl alcohol, 24.8 g of magnesium nitrate, and 4.5 g of potassium nitrate are added, and the calcination temperature is 800° C.

[0044]35g of ammonium molybdate, 22g of nickel nitrate, an appropriate amount of ammonia water and deionized water were prepared into a solution, saturated impregnated the obtained carrier, dried at 110°C for 4 hours, and calcined at 520°C for 4 hours to obtain catalyst C of the present invention.

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Abstract

The present invention discloses one kind of hydrodemetalizing catalyst and its preparation process. The catalyst has alumina containing P, Mg and K as carrier, VIII and VIB metal element as the active component and optional auxiliary components. It is prepared through a simple preparation process. The catalyst is especially suitable for the hydrodemetalizing process of hydrocarbon with high oxygen content, high metal content and high easy-to-coke component content, such as light coal tar oil fraction, and has the features of high hydrodemetalizing activity, high stability and long service life.

Description

technical field [0001] The invention relates to a hydrodemetallization catalyst and a preparation method thereof. In particular, the present invention relates to a hydrodemetallization catalyst with good thermal and hydrothermal stability and strong anti-coking performance and a preparation method thereof, which is especially suitable for the hydrodemetallization process of light fractions of coal tar. Background technique [0002] For hydrocarbons with high oxygen content, high metal content, many reactive components (such as compound oxygen, olefins, etc.), and many coking components, such as coal tar light fractions suitable for hydrotreating (organic oxygen content is usually 0.3~ 11%, the metal content is 5-80PPm, and the conventional boiling point is generally 60-530°C) in the hydrotreating reaction process. Usually, a hydrodemetallization catalyst bed is arranged before the hydrofining catalyst bed. The purpose is to: remove Metals, removal of reactive components, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/188B01J27/19B01J27/185B01J21/04B01J21/10
Inventor 林方刘启红黄玉豹袁士杰朱广英
Owner 林方
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