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Catalyst for hydrorefining petroleum waxes and its prep.

A technology for hydrorefining and catalyst, applied in petroleum wax refining and other directions, can solve the problems of low hydrorefining activity and insufficient metal dispersion, and achieve high hydrorefining reaction activity, improved hydrorefining activity, and good dispersion. effect of state

Inactive Publication Date: 2005-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the amount of metal dispersed on the carrier is not high enough, only 12.5-19.1w% (based on MoO 3 count), so the activity of hydrofining is not high
This method has the same disadvantages as USP 4,186,078

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1), γ-Al 2 O 3 Carrier preparation

[0035] Weigh 200g of alumina monohydrate dry glue powder (containing 2w% alumina trihydrate), add 3.0g KCl, 4.0ml H 3 PO 4 , 155ml 3% HNO 3 And the right amount of H 2 O. Mix well, knead into a plastic shape and extrude into clover strips. After drying overnight in the air, it was dried at 110°C for 2 hours.

[0036] The dried sample was placed in a high temperature furnace, heated to 200°C at a rate of 3°C per minute, and baked at this temperature for 1.0 hour. Then, the temperature is increased to 488°C at a rate of 3°C per minute and is calcined at that temperature for 2.0 hours, and then the temperature is increased to 600°C at a rate of 3°C per minute and the temperature is baked at that temperature for 2.0 hours.

[0037] (2) Preparation of Mo-Ni-P solution

[0038] 15ml phosphoric acid (85%) was dissolved in 600ml water. The solution was added to 100 g of molybdenum oxide with stirring. The temperature is raised to slightly boili...

Embodiment 2

[0044] Same steps as in Example 1, but γ-Al 2 O 3 The final calcination temperature of the product was changed from 600℃ to 720℃.

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PUM

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Abstract

The invention discloses a petroleum wax hydrorefining catalyst and a preparation method thereof. First prepared a new type of γ-Al 2 o 3 , the metal (such as Mo) in the γ-Al 2 o 3 The amount of chemical dispersion on the surface is higher than that of γ-Al prepared by ordinary methods 2 o 3 The amount of dispersion on aluminum oxide is 60-120% higher, and at the same time, two different additives are introduced in the preparation process to make the specific surface area and pore diameter of the alumina larger. At the same time, a Mo-Ni-P solution with high metal concentration and high stability was prepared. γ-Al 2 o 3 The solution was impregnated at room temperature, filtered, dried and roasted to prepare MoNiP / Al 2 o 3 Petroleum wax hydrorefining catalyst.

Description

1. Technical field [0001] The invention relates to a hydrorefining catalyst and a preparation method thereof, in particular to a high-activity petroleum wax hydrorefining catalyst and a preparation method thereof. 2. Background technology [0002] Petroleum wax usually contains a small amount of harmful substances, such as certain aromatic compounds that are harmful to the human body, and certain colored and unstable components. The main purpose of petroleum wax hydrorefining is to remove colored, unstable and harmful substances contained in petroleum wax through hydrogenation. Therefore, an efficient catalyst is needed. The catalyst is required to have high hydrogenation saturation performance and high ability to remove aromatic organic compounds. [0003] Petroleum wax hydrorefining catalysts mainly use metal elements of group VIII (Ni or Co) and group VIB (Mo or W) as active components, and use γ-Al 2 O 3 Or SiO 2 -Al 2 O 3 For the carrier. It is generally believed that the pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G73/44
Inventor 罗锡辉何金海
Owner CHINA PETROLEUM & CHEM CORP