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Paraffin hydrorefining catalyst and its prepn process

A hydrofining and catalyst technology, which is applied in the refining of petroleum wax, can solve the problems of inability to produce food-grade paraffin with qualified color and insufficient removal performance of colored substances in paraffin, so as to improve the activity of paraffin hydrofining and decolorization performance, Super paraffin wax decolorization performance, the effect of high dispersion state

Active Publication Date: 2005-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned catalysts (and other paraffin hydrofinishing catalysts) are quite good in terms of hydrogenation saturation performance, they are still insufficient in the removal performance of colored substances in paraffin wax
Therefore, for some raw material waxes that are difficult to decolorize, it is still impossible to produce food-grade paraffin wax with acceptable color by using existing catalysts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1).B 2 o 3 -Al 2 o 3 Preparation of vector

[0036] Weigh 200g of alumina monohydrate dry rubber powder (containing 2w% alumina trihydrate), add 6.5g B 2 o 3 , 150ml 3wt% HNO 3 and 5ml H 2 O. Mix well, knead into a plastic shape and extrude into clover strips. After air drying overnight, dry at 110°C for 2 hours.

[0037] 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 460° 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 650° C. at a rate of 3° C. per minute, and roasted at a constant temperature at this temperature for 2.0 hours.

[0038] (2). Preparation of Mo-Ni-P solution

[0039] Dissolve 14ml of phosphoric acid (concentration: 85v%) in 600ml of water. The solution was added to 80 g of molybdenum oxide with s...

Embodiment 2

[0043] (1).B 2 o 3 -Al 2 o 3 Preparation of vector

[0044] Same as embodiment 1 (1) step, but B 2 o 3 The addition amount is changed to 9.5g.

[0045] (2) Preparation of Mo-Ni-P solution

[0046] The steps are the same as in Example 1 (2).

[0047] (3).Mo-Ni-P / B 2 o 3 -Al 2 o 3 Catalyst preparation

[0048] Same as the steps in Example 1(3).

Embodiment 3

[0050] (1).B 2 o 3 -Al 2 o 3 Preparation of vector

[0051] Same as embodiment 1 (1) step, but B 2 o 3 Change to BF 3 . BF 3 Addition amount is 23.5g.

[0052] (2). Preparation of Mo-Ni-P solution

[0053] Same step as Example 1(2), but the filtrate was concentrated to 260ml.

[0054] (3).Mo-Ni-P / B 2 o 3 -Al 2 o 3 Catalyst preparation

[0055] The same as in Example 1 (3), but the third stage of the calcination temperature is changed to 390 ° C.

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Abstract

The present invention is paraffin hydrorefining catalyst and its preparation process. New type of gamma-Al2O3 carrier is first prepared via adding boron compound or boron-containing halide for excellent surface structure favorable to the dispersion of active metal. The carrier is then soaked in Mo-Ni-P solution, and through drying, roasting and other steps, Mo-Ni-P / B2O3-Al2O3 catalyst is prepared. During the preparation of the catalyst, the condition is controlled and optimized for homogeneous dispersion of the metals on the surface of B2O3-Al2O3, proper distribution of active components and even raised reducing performance. The catalyst has excellent paraffin hydrorefining performance, even if in reduced metal loading amount, and excellent paraffin decolorizing performance.

Description

technical field [0001] The invention relates to a hydrofinishing catalyst, in particular to a paraffin hydrofinishing catalyst with high hydrofinishing performance and high decolorization performance and a preparation method thereof. Background technique [0002] Petroleum wax usually contains a small amount of harmful substances, such as certain aromatic compounds harmful to the human body and certain colored and unstable components. The main purpose of paraffin hydrofining is to remove the colored, unstable components and substances harmful to the human body contained in petroleum wax materials through hydrofining, so as to achieve the preparation of food-grade paraffin that is harmless to the human body and even edible. Require. Therefore, there is a need for a paraffin hydrorefining catalyst with both high hydrogenation saturation performance and high ability to remove aromatic organic compounds. [0003] Paraffin hydrotreating catalysts mainly use Group VIII (Ni or Co...

Claims

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Application Information

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IPC IPC(8): C10G73/44
Inventor 何金海罗锡辉
Owner CHINA PETROLEUM & CHEM CORP
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