Catalyst for hydrogenating Fischer-Tropsch synthetic wax and its prepn

A technology for Fischer-Tropsch synthesis of waxes and catalysts, which is applied in the preparation of organic compounds, chemical instruments and methods, and catalysts for physical/chemical processes. It can solve the problems of low hydrogenation saturation catalytic activity and achieve high hydrogenation saturation activity.

Inactive Publication Date: 2003-05-14
SYNFUELS CHINA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above catalysts have good hydrogenation and dearomatization properties for petroleum waxes, but their catalytic activity for hydrogenation saturation of waxy hydrocarbons with high olefin content is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] γ-Al 2 o 3 The pellets were treated with steam for 4 hours under the conditions of 540°C and water-to-solution ratio of 2 (weight ratio) to obtain S 0 ;Weigh S 0 100g, add to TiCl 4 ethanol solution (66ml TiCl 4 +100ml ethanol) placed at room temperature for overnight hydrolysis, dried at 120°C, and baked in a muffle furnace at 500°C for 4 hours to obtain TiO 2 -Al 2 o 3 Carrier S 1 . Then, nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O), ammonium metatungstate ((NH 4 ) 2 W 4 o 13 ·8H 2 O), dissolved in water according to the equal-volume impregnation method, prepared as an impregnation solution, and put TiO 2 -Al 2 o 3 Oxide carrier S 1 , impregnated for 2 hours, dried and roasted to obtain Ni-W-TiO 2 / Al 2 o 3 Catalyst N 1 . Its weight percentage is: NiO: WO 3 :TiO 2 :Al 2 o 3 =12.7:4.2:8.3:74.8.

Embodiment 2

[0024] A commodity γ-Al 2 o 3 The pellets were treated with steam for 4 hours under the conditions of 540°C and water-to-solution ratio of 2 (weight ratio) to obtain S 0 ;Weigh S 0 100g, add to Ti(OC 4 h 9 ) 4 Solution, weigh 100gS 0 Added to Ti(OC 4 h 9 ) 4 in ethanol solution (58mlTi(OC 4 h 9 ) 4 + 100ml ethanol) placed at room temperature for hydrolysis overnight, dried at 120°C, and placed in a muffle furnace at 500°C for 6 hours to obtain TiO 2 -Al 2 o 3 Oxide carrier S 2 . Then, nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O), ammonium metatungstate ((NH 4 ) 2 W 4 o 13 ·8H 2 O), dissolved in water according to the equal-volume impregnation method, prepared as an impregnation solution, and put TiO 2 -Al 2 o 3 Oxide carrier S 2 , impregnated for 2 hours, dried and roasted to obtain Ni-W-TiO 2 / Al 2 o 3 Catalyst N 2 . Its weight percentage is: NiO: WO 3 :TiO 2 :Al 2 o 3 =14.0:3.5:7.0:75.5.

Embodiment 3

[0026] TiO 2 -Al 2 o 3 The carrier is prepared by mixing industrial aluminum hydroxide dry rubber powder and titanium hydroxide dry rubber powder and extrusion molding. For example, weigh 100g of aluminum hydroxide dry rubber powder and 16.1g of metatitanic acid powder, add 9ml of 5% (weight ratio) dilute nitric acid, mix thoroughly, then add 3g of extrusion aid Tianqing powder, etc., and extrude into 3mm strips , dried at 120°C, placed in a muffle furnace and baked at 520°C for 3 hours to obtain TiO2 -Al 2 o 3 Carrier S 3 . Then, nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O), ammonium metatungstate ((NH 4 ) 2 W 4 o 13 ·8H 2 O), dissolved in water according to the equal-volume impregnation method, prepared as an impregnation solution, and put TiO 2 -Al 2 o 3 Oxide carrier S 3 , impregnated for 2 hours, dried and roasted to obtain Ni-W-TiO 2 / Al 2 o 3 Catalyst N 3 , its weight percent is: NiO: WO 3 :TiO 2 :Al 2 o 3 =11.5:5.0:14:69.5.

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PUM

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Abstract

The catalyst consists of nickel oxide 5.0-20.0 wt%, tungsten oxide 0.1-15.0 wt%, titania 1.0-20.0 wt% and alumina 45.5-93.9 wt%. The preparation process includes the treatment of alumina, the introduction of titania, and impregnating active tungsten oxide and nickel oxide components. The present invention has the advantages of high hydrogenation activity for heavy hydrocarbon, and is especially suitable for hydrogenating saturation wax with high olefin content.

Description

[0001] Field: [0002] The invention relates to a hydrogenation catalyst, in particular to a hydrogenation catalyst used for hydrogenation and saturation of olefins in the crude wax by using carbon monoxide hydrogenation to synthesize crude product wax as a raw material. Background technique: [0003] Because the F-T crude product wax contains a large amount of olefins and a small amount of oxygen-containing compounds, it is easy to polymerize and be oxidized, so it cannot be directly processed for oil products and used in food and food packaging industries. For this reason, the F-T synthetic wax must be hydrogenated and saturated. At present, industrial wax hydrogenation catalysts are mainly for petroleum wax, and petroleum wax is different from F-T wax. It contains a large amount of condensed ring aromatic hydrocarbons and S, N, O heterocyclic compounds and other harmful substances, which need to be refined by catalytic hydrogenation. [0004] Paraffin hydrotreating catalys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06C07C67/60C07C69/26C10G45/08
Inventor 孙予罕任杰李永红李到姜建卫
Owner SYNFUELS CHINA TECH CO LTD
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