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Catalyst for hydrorefining petroleum waxes and its prepn. process

A hydrofining and catalyst technology, applied in petroleum wax refining, etc., can solve the problems of insufficient metal dispersion and low hydrofining activity, and achieve the effect of improving hydrofining activity, high dispersion, and good dispersion state

Inactive Publication Date: 2004-10-06
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 Preparation of vector

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

[0036] Place the dried sample in a high-temperature furnace, raise the temperature to 200°C at a rate of 3°C per minute, and roast at this temperature for 1.0 hour. Then, the temperature was raised to 488° C. at a rate of 3° C. per minute, and was roasted at a constant temperature at this temperature for 2.0 hours, and then the temperature was raised to 600° C. at a rate of 3° C. per minute, and roasted at a constant temperature at this temperature for 2.0 hours.

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

[0038] Dissolve 15ml of phosphoric acid (85%) in 600ml of water. The solution was added to 100 g of molybdenum...

Embodiment 2

[0042] (1), γ-Al 2 o 3 Preparation of vector

[0043] Same as Example 1(1). But the amount of KCl added was changed from 3.0g to 6.0g.

[0044] (2), preparation of Mo-Ni-P solution

[0045] With embodiment 1 (2).

[0046] (3), MoNiP / Al 2 o 3 Catalyst preparation

[0047] With embodiment 1 (3).

Embodiment 3

[0049] (1), γ-Al 2 o 3 Preparation of vector

[0050] With embodiment 2 (1), but final roasting temperature is changed into 720 ℃ by 600 ℃

[0051] (2), preparation of Mo-Ni-P solution

[0052] With embodiment 1 (2). But the filtrate was finally concentrated to 230ml.

[0053] (3), MoNiP / Al 2 o 3 Catalyst preparation

[0054] With embodiment 1 (3).

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PUM

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Abstract

The preparation process of petroleum wax hydrorefining Mo-Ni-P / Al2O3 catalyst includes preparing large-specific surface area new-type gamma-Al2O3, on the surface of which, the chemical metal dispersing amount is 60-120 % higher than on the surface of gamma-Al2O3 prepared via common process; preparing Mo-Ni-P solution with high metal concentration and high stability; soaking gamma-Al2O3 with the solution at room temperature, filtering, stoving, roasting and other steps.

Description

1. Technical field [0001] The invention relates to a hydrofinishing catalyst and a preparation method thereof, in particular to a highly active petroleum wax hydrofinishing catalyst and a preparation method thereof. 2. Background technology [0002] Petroleum wax usually contains a small amount of harmful substances such as some harmful aromatic compounds (single-ring aromatic hydrocarbons and polycyclic aromatic hydrocarbons such as benzopyrene, etc.) and some colored and unstable components. The main purpose of petroleum wax hydrofining is to remove the colored, unstable and harmful substances contained in petroleum wax by hydrogenation. Therefore, there is a need for an efficient catalyst. The catalyst is required to have both 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 γ-...

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