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Method for preparing alumina supporter

A kind of alumina carrier, alumina technology, applied in catalyst carrier, chemical instrument and method, catalyst activation/preparation and other directions, can solve the requirements of industrial use, high raw material cost and production cost, low catalyst mechanical strength, etc. problems, to achieve the effect of reducing pollution, low price and low mechanical strength

Active Publication Date: 2006-05-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the carrier and catalyst prepared by the above method have the following disadvantages: first, the pore distribution is dispersed and not concentrated
Second, the mechanical strength of the catalyst is too low to meet the requirements for industrial use
CN1256969A etc. propose to adopt two kinds of alumina of different forms, and use two kinds of pore-enlarging agents of physical pore-enlarging agent and chemical pore-enlarging agent, can obtain the alumina carrier with suitable performance, but preparation process is complicated, and raw material cost and production cost are all relatively high. high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026](1). Vector preparation

[0027] Scale pseudo-thin alumina dry rubber powder (containing alumina trihydrate2 o 3 Dry basis content is 68wt%) 200g, extrusion aid Tianqing powder 6g, and H 2 O 230ml. Fully mix and knead, then add 28g of wheat flour, knead evenly and extrude into shape (Φ=1.2mm). After air drying overnight, it was dried at 110°C for 3 hours.

[0028] Place the dried sample in a high-temperature furnace, raise the temperature to 400°C at a rate of 100°C / hour, then raise the temperature to 830°C at a rate of 80°C / hour, and roast at this temperature for 2.0 hours to obtain Al 2 o 3 carrier.

[0029] (2). Dipping

[0030] Weigh 100g Al 2 o 3 Carrier, add 150ml Mo-Ni-NH 3 solution (with MoO 3 11.0wt%, NiO 3.0wt%) impregnated for 2 hours, and the excess solution was filtered off. The catalyst wet strips were air dried overnight.

[0031] (3). Catalyst drying and roasting

[0032] Put the dried catalyst (precursor) sample in a high-temperature furnace...

Embodiment 2

[0034] (1). Vector preparation

[0035] Same as embodiment 1 (1), but the potato starch addition is changed into 32g.

[0036] (2). Dipping

[0037] Same as Example 1(2).

[0038] (3). Catalyst drying and roasting

[0039] Same as Example 1(3).

Embodiment 3

[0041] (1). Vector preparation

[0042] Same as embodiment 1 (1), but cornstarch add-on changes 36g into.

[0043] (2). Dipping

[0044] Same as Example 1(2).

[0045] (3). Catalyst drying and roasting

[0046] Same as Example 1(3).

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PUM

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Abstract

The invention discloses a method for preparing AL2O3 carrier. Said invention uses the farina as pore-expansion agent, which is added as powder after mixing other raw materials uniformly, and its added amount is 10-20wt% of alumina. Compared to present technique, said inventive alumina carrier has high strength, larger pore diameter, and centralized pore distribution, while said inventive method has simple process without special raw material and the cost of material and production are lower. The invention can be used as catalyst in the areas of oil refining, chemical industry and environmental protection, especially as the hydrogenation catalyst of heavy and residual oil.

Description

technical field [0001] The invention relates to a method for preparing an alumina carrier, in particular to a method for preparing an alumina carrier for heavy oil, residue oil hydrodemetallization and / or heavy oil hydrodesulfurization catalyst. Background technique [0002] Alumina carrier is a kind of commonly used catalyst carrier, which is widely used in petroleum processing, chemical industry, environmental protection and other fields. In some fields, alumina itself is a catalyst. The physical properties of alumina support, such as pore diameter, pore size distribution, mechanical strength, specific surface area, pore volume, etc., have a decisive influence on the properties of the catalyst containing it. In addition, in many industrial catalytic processing processes, the cost of the catalyst accounts for a relatively large proportion of the total cost. Therefore, reducing the raw material cost and processing cost of the catalyst has an important impact on the benefits ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J21/12B01J37/00C04B38/00
Inventor 罗锡辉何金海
Owner CHINA PETROLEUM & CHEM CORP
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