Preparation method of poisoning-resistant catalyst for unsaturated oil hydrogenation

A technology for oil hydrogenation and catalyst, applied in the field of catalysis, can solve problems such as high price and loss of competitive advantages of catalysts, and achieve the effects of stable physical parameters, not easy to oxidize, not easy to pulverize

Active Publication Date: 2012-06-27
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In terms of improvement of the active component, as the Chinese patent announcement 85103783 announced a catalyst with Ni-Pd as the active component, the catalyst has higher activity, but the price of Pd is too high, so that the catalyst loses its competitive advantage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Catalyst preparation

[0018] Prepare alkaline precipitant solution:

[0019] Weigh 20g of sodium carbonate, pour it into 500ml of deionized water, and stir until completely dissolved.

[0020] Prepare nickel salt solution:

[0021] Weigh 45g NiSO 4 .6HO 2 , Pour into 1600ml deionized water, stir until completely dissolved.

[0022] Prepare the iron salt solution:

[0023] Weigh 2.5gFe 2 (SO 4 ) 3 Pour into 200ml deionized water and stir until completely dissolved.

[0024] Mix the above-mentioned nickel salt solution and iron salt solution thoroughly.

[0025] Pour the prepared alkaline precipitant solution into the reaction kettle, heat to 65°C, slowly add it to the alkaline precipitant solution while stirring, control for 1 hour, and quickly adjust the pH of the solution to 7-9 after adding , Then add the alumina carrier, age for 30 minutes, filter, and wash with deionized water until there is no acid ion.

[0026] Weigh 50g of the above filter cake, put it in an oven, dry at ...

Embodiment 2

[0036] 1. Catalyst preparation

[0037] Prepare alkaline precipitant solution:

[0038] Weigh 20g of sodium carbonate, pour it into 500ml of deionized water, and stir until completely dissolved.

[0039] Prepare nickel salt solution:

[0040] Weigh 45g NiSO 4 .6HO 2 , Pour into 1600ml deionized water, stir until completely dissolved.

[0041] Prepare the iron salt solution:

[0042] Weigh 2.5gFe 2 (SO 4 ) 3 Pour into 200ml deionized water and stir until completely dissolved.

[0043] Mix the above-mentioned nickel salt solution and iron salt solution thoroughly.

[0044] Pour the prepared alkaline precipitant solution into the reaction kettle, heat to 65°C, slowly add it to the alkaline precipitant solution while stirring, control for 1 hour, and quickly adjust the pH of the solution to 7-9 after adding , Then add the alumina carrier, age for 30 minutes, filter, and wash with deionized water until there is no acid ion.

[0045] Weigh 50g of the above filter cake, put it in an oven, dry at ...

Embodiment 3

[0055] 1. Catalyst preparation

[0056] Prepare alkaline precipitant solution:

[0057] Weigh 20g of sodium carbonate, pour it into 500ml of deionized water, and stir until completely dissolved.

[0058] Prepare nickel salt solution:

[0059] Weigh 45g NiSO 4 .6HO 2 , Pour into 1600ml deionized water, stir until completely dissolved.

[0060] Prepare the iron salt solution:

[0061] Weigh 2.5gFe 2 (S0 4 ) 3 Pour into 200ml deionized water and stir until completely dissolved.

[0062] Preparation of rare earth salt solution:

[0063] Weigh 0.5gLa(NO 3 ) 3 ·6H 2 O, Ce(NO 3 ) 3 ·6H 2 O was poured into 100ml of deionized water and stirred until completely dissolved.

[0064] The above-mentioned nickel salt solution, iron salt solution and rare earth salt solution are thoroughly mixed.

[0065] Pour the prepared alkaline precipitant solution into the reaction kettle, heat to 65°C, slowly add it to the alkaline precipitant solution while stirring, control for 1 hour, and quickly adjust the pH of t...

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Abstract

The invention discloses a preparation method of a poisoning-resistant catalyst for unsaturated oil hydrogenation. The preparation method is characterized by comprising the following steps of 1, putting an alkaline precipitator solution into a reactor, and heating to a temperature of 60 to 70 DEG C, 2, adding a mixed solution of a soluble nickel salt, a ferric salt and a rare earth salt into the heated alkaline precipitator solution with stirring in a period of 1 to 2 hours, 3, then fast adding alumina carriers into the mixed solution obtained by the steps 2, stirring for 0.5 to 1 hour, filtering, and washing by deionized water until acid radical ions are removed completely, and 4, drying at a temperature of 110 to 120 DEG C for 4 to 5 hours, crushing, and carrying out hydrogen feeding at a temperature of 400 to 500 DEG C for 2 to 3 hours to obtain the poisoning-resistant catalyst for unsaturated oil hydrogenation, wherein an Ni/Fe atomic ratio of the soluble nickel salt to the ferric salt is in a range of 5 to 25 and the poisoning-resistant catalyst for unsaturated oil hydrogenation contains 30 to 50 wt% of nickel, 2 to 5 wt% of iron, 0.5 to 1.0 wt% of a rare earth salt of cerium and 0.5 to 1.0 wt% of a rare earth salt of lanthanum.

Description

Technical field [0001] The invention relates to the technical field of catalysis, and provides a method for preparing an anti-poison type unsaturated fat hydrogenation catalyst. The active components are nickel and iron, the additives are lanthanum and cerium, and the carrier is alumina. Background technique [0002] Hydrogenation of fats and oils is the process of partially or completely hydrogenating unsaturated animal and vegetable oils through catalysts to partially or completely hydrogenate their double bonds to produce industrial hardened oils such as soap oil, extremely hydrogenated oils and edible hydrogenated oils such as margarine, shortening, cocoa butter substitutes Wait. Currently, industrial production usually uses nickel-diatomite or Ni-Cu-diatomite catalysts. Due to the different sulfur content in different fats and oils, it is easy to cause the poisoning of the catalyst, and the activity of the catalyst is greatly reduced. [0003] In the search for new carriers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J23/755C11C3/12
Inventor 陈永生于海斌孙春晖刘伟许岩李佳刘红光滕厚开
Owner CHINA NAT OFFSHORE OIL CORP
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