Method for preparing carbon-contained catalyst carrier

A technology of catalyst carrier and carrier, which is applied in the direction of catalyst carrier, chemical instrument and method, physical/chemical process catalyst, etc. It can solve the problems of complex preparation process, difficulty in large-scale industrialization, and high cost

Active Publication Date: 2010-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing carbon coating method has a complicated preparation pro

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] 2. Add in the preparation process of alumina dry rubber powder, such as introducing by co-precipitation or step-by-step precipitation. Then, the carbon-free alumina carrier is obtained by extruding the alumina dry rubber powder, drying and calcining.

[0028] 3. Add the acid solution to the alumina dry rubber powder, knead until it becomes a plastic body, extrude it on an extruder, then dry and roast it to make a carrier. Then impregnate the alumina support strip with a solution containing VIB and / or VIII metal components, dry and calcinate to make a carbon-free alumina support.

[0029] One or more of extrusion aids, adhesives, peptizers, and other additives required for the catalyst can be added to the above-mentioned alumina dry rubber powder, and the amount added can be determined according to the properties of the prepared catalyst according to the knowledge in the art. The alumina dry rubber powder used is the pseudo-boehmite produced by the aluminum chloride-amm...

Embodiment 1

[0035] This example introduces the preparation of carbon-free alumina carrier by using pseudo-boehmite dry rubber powder. Dry rubber powder specific surface area is 370m 2 / g, the pore volume is 0.90ml / g.

[0036] Weigh 300g of dry rubber powder, add 100g of SB powder, add 6g of citric acid and 6g of safflower powder, mix well, add 345g of acidic solution, HNO in the acidic solution 3 The concentration is 1.74%, and the rest is distilled water. After rolling for 20 minutes, extrude the strips with a clover orifice plate with a diameter of 1.7mm. After drying at 120°C for 4h and then calcining at 500°C for 3h, the obtained alumina carrier bar is marked as A.

Embodiment 2

[0038] This example introduces the preparation of carbon-free support by using pseudo-boehmite dry rubber powder and nickel nitrate. Dry rubber powder specific surface area is 370m 2 / g, the pore volume is 0.90ml / g.

[0039] Weigh 300g of dry rubber powder, add 100g of SB powder, add 6g of citric acid and 6g of safflower powder, mix well, add 345g of acidic solution, HNO in the acidic solution 3 The concentration is 1.74%, the nickel nitrate content is 3.9%, and the rest is distilled water. After rolling for 20 minutes, extrude the strips with a clover orifice plate with a diameter of 1.7mm. Dry at 120°C for 4h, then bake at 500°C for 3h, and the obtained carrier bar is marked as B.

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Abstract

The invention discloses a method for preparing a carbon-contained catalyst carrier, which comprises the following steps of: preparing a carbon-free porous inorganic refractory oxide carrier; soaking a precursor of carbon on the carbon-free inorganic refractory oxide carrier; introducing a metal auxiliary agent when preparing the carbon-free carrier and/or soaking the precursor of the carbon; then carrying out heat treatment on the porous inorganic refractory oxide carrier loaded with the precursor of the carbon and the metal auxiliary agent; decomposing the precursor of the carbon into carbon to obtain the carbon-contained catalyst carrier. In the preparation process of the catalyst carrier, by the promoting function of a few of metal auxiliary agents, the precursor of the carbon is decomposed, and the strict processing condition is prevented; the surface of the catalyst carrier is covered, the surface property of the catalyst carrier is adjusted, and the aim of improving the use performance of catalyst is achieved. Compared with a method for adding the precursor of the carbon in the molding process of the carrier, the method has the advantages of carrier strength improvement and utilization ratio improvement of carbon in the carrier, and greatly improves the hydrogenation processing activity of heavy mass distillate oil.

Description

technical field [0001] The invention relates to a preparation method of a carbon-containing catalyst support, in particular to a preparation method of a carbon-containing hydrogenation catalyst support. Background technique [0002] Most traditional hydrotreating catalysts use Al 2 o 3 As a carrier, but active Al 2 o 3 (such as γ-Al 2 o 3 ) has more Lewis acid centers, which can easily lead to coking of the catalyst, and γ-Al 2 o 3 There is a strong interaction between the carrier and the metal component, which makes it difficult for the metal component to transform into a highly active active phase. [0003] It is believed that the type II active phase is fully vulcanized and is stacked (stacked) MoS 2 Structure, Co-Mo-S active phase with high sulfur coordination, usually stacked (stacked) together by larger sheets, not connected to the carrier, each active center of type II active phase has high potential activity, hydrogenation of thiophene The activity of desulf...

Claims

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Application Information

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IPC IPC(8): B01J32/00B01J21/16B01J23/888
Inventor 杨占林彭绍忠姜虹刘雪玲
Owner CHINA PETROLEUM & CHEM CORP
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