Hydrofining catalyst carrier and preparation method thereof as well as hydrofining catalyst using carrier and preparation method of hydrofining catalyst

A catalyst carrier, hydrorefining technology, applied in catalyst carriers, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problem of reducing active component loading, reducing carrier adsorption activity, affecting Catalytic activity and catalytic reaction efficiency of catalysts, to achieve the effect of improving catalytic performance, good molding, and increasing adsorption activity

Active Publication Date: 2013-07-24
SHENYANG SANJUKAITE CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the raw material for preparing the carrier, diatomite contains Cl inside - , SO 4 2- The above impurities will occupy the effective adsorption sites on the carrier, so as to reduce the adsorption activity of the carrier, thereby reducing the loading of active components per unit carrier area, which in turn affects the catalytic activity of the catalyst and the efficiency of the catalytic reaction.

Method used

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  • Hydrofining catalyst carrier and preparation method thereof as well as hydrofining catalyst using carrier and preparation method of hydrofining catalyst
  • Hydrofining catalyst carrier and preparation method thereof as well as hydrofining catalyst using carrier and preparation method of hydrofining catalyst
  • Hydrofining catalyst carrier and preparation method thereof as well as hydrofining catalyst using carrier and preparation method of hydrofining catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0036] (1) Add 300g of diatomaceous earth to 300g of 10wt% sodium hydroxide solution and soak for 2 hours, then directly add 10wt% of nitric acid solution to neutralize, then rinse with deionized water and press filter, the obtained filter cake is modified Diatomite, the pore volume of the modified diatomite is 1.05cm 3 / g, the specific surface area is 380m 2 / g;

[0037] (2) Add 250 g of deionized water to 200 g of modified diatomite and stir evenly to obtain a premix;

[0038] (3) Mix 600g of nano-alumina powder and 400g of the premix and put it into an extruder to extrude into strips of Φ1х4cm, dry the strips at 95°C for 1h, and roast at 350°C for 2h to obtain carrier Z1 .

Embodiment 2

[0040] (1) Add 400g of diatomaceous earth to 600g of 12wt% potassium hydroxide solution and soak for 3 hours, then directly add 10wt% formic acid solution to neutralize, then rinse with deionized water and press filter, and the obtained filter cake is modified Diatomite, the pore volume of the modified diatomite is 1.10cm 3 / g, the specific surface area is 400m 2 / g;

[0041] (2) Add 300g of nitric acid solution to 300g of modified diatomite and stir evenly to obtain a premix;

[0042] (3) Mix 500g of nano-alumina powder and 500g of the premix, put them into an extruder and extrude them into strips of Φ1х4cm, dry the strips at 100°C for 3h, and roast at 450°C for 2h to obtain carrier Z2 .

Embodiment 3

[0044] (1) Add 300g of diatomaceous earth to 600g of 15wt% sodium carbonate solution and soak for 4 hours, then directly add 10wt% of oxalic acid solution to neutralize, then rinse with deionized water and press filter, the obtained filter cake is modified silicon Alite, the pore volume of the modified diatomite is 1.20cm 3 / g, the specific surface area is 430m 2 / g;

[0045] (2) Add 200g of citric acid to 260g of modified diatomite and stir evenly to obtain a premix;

[0046] (3) Mix 500g of nano-alumina powder and 400g of the premix, put them into an extruder and extrude them into strips of Φ1х4cm, dry the strips at 110°C for 3h, and roast at 400°C for 3h to obtain carrier Z3 .

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Abstract

The invention belongs to the technical field of hydrofining catalysts, and particularly relates to a hydrofining catalyst carrier and a preparation method thereof as well as a hydrofining catalyst using the carrier and a preparation method of the hydrofining catalyst. The preparation method of the carrier comprises the steps of: mixing modified diatomite, alumina powder, a bonding agent and a pore-enlarging agent, then kneading and forming, drying and roasting to obtain the carrier, and is characterized in that the modified diatomite is prepared by steeping diatomite in alkali liquor and neutralizing in acid liquor and then carrying out water washing and filter pressing, wherein the amount of impurities on the surface and in pore spaces can be greatly reduced, thereby being beneficial to load of active ingredients; and the hydrofining catalyst prepared by using the carrier is applicable to removal of organic sulfides and unsaturated hydrocarbons in light naphtha, liquefied gas, natural gas and oil refining dry gas.

Description

technical field [0001] The invention relates to a carrier for a hydrorefining catalyst and a preparation method thereof, as well as a hydrorefining catalyst using the carrier and a preparation method thereof, belonging to the technical field of hydrogenation catalysts. Background technique [0002] The raw materials for preparing synthesis gas are mainly light naphtha, liquefied gas, natural gas and refinery dry gas. The above-mentioned raw materials contain a large amount of organic sulfides before treatment, mainly including sulfide, thiophene, mercaptan and carbonyl sulfide, etc. Because these organic sulfides are toxic, these raw materials containing organic sulfides are directly used for synthesis gas production During the process, on the one hand, it is easy to cause the deactivation of the catalyst used in the process, thereby reducing the production efficiency; Environmental pollution; therefore, before producing syngas, it is necessary to hydrogenate its raw materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J23/883C10G45/08
Inventor 李博赵素云谢红单宏飞张楠
Owner SHENYANG SANJUKAITE CATALYST
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