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Activated carbon/aluminum oxide composite type catalyst carrier and preparation method and application of activated carbon/aluminum oxide composite type catalyst carrier

A technology of catalyst carrier and activated carbon, which is applied in the direction of catalyst carrier, physical/chemical process catalyst, chemical instrument and method, etc. It can solve the problems of difficult molding and low mechanical strength, and achieve the effect of large specific surface area and high mechanical strength

Inactive Publication Date: 2014-03-26
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Activated carbon as a catalyst carrier for residual oil hydrogenation has the above advantages, but also has the disadvantages of low mechanical strength and difficult molding

Method used

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  • Activated carbon/aluminum oxide composite type catalyst carrier and preparation method and application of activated carbon/aluminum oxide composite type catalyst carrier
  • Activated carbon/aluminum oxide composite type catalyst carrier and preparation method and application of activated carbon/aluminum oxide composite type catalyst carrier
  • Activated carbon/aluminum oxide composite type catalyst carrier and preparation method and application of activated carbon/aluminum oxide composite type catalyst carrier

Examples

Experimental program
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Effect test

Embodiment 1

[0018] The composite ratio of alumina and activated carbon used in this example is 1:1, the specific preparation method:

[0019] (1) Activated carbon pickling and oxidation treatment: First, use 25% hydrochloric acid to circulate and wash for 5 hours in a boiling state, and the ratio of hydrochloric acid to activated carbon is 8:1; the activated carbon after pickling is treated with 35% nitric acid at room temperature 10h, the ratio of oxidant and activated carbon is 30:1.

[0020] (2) Mixing: Activated carbon and γ-Al 2 o 3 Mix according to the weight ratio of 1:1, add 1% acetic acid, 1% citric acid, and 2% scallop powder;

[0021] (3) Kneading: Knead activated carbon, alumina and additives into a cake under the kneader;

[0022] (4) Extrusion: Extrude the kneaded cake into a clover shape through an extruder;

[0023] (5) Roasting: Dry the extruded carrier at 120 °C, and then roast it at 500 °C for 2 h under nitrogen atmosphere to prepare γ-Al 2 o 3 / AC composite carri...

Embodiment 2

[0025] The composite ratio of alumina and activated carbon used in this example is 2:1, and the pickling and oxidation pretreatment of activated carbon are the same as step (1) in the example, and the specific preparation method is as follows:

[0026] (1) Mixing: Activated carbon and γ-Al 2 o 3 Mix according to the weight ratio of 1:1, add 1.5% of acetic acid, 2% of citric acid, and 3% of kale powder;

[0027] The rest of the steps are the same as in Example 1 to prepare a composite carrier, which is denoted as AMAC-2.

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Abstract

The invention relates to an activated carbon / aluminum oxide composite type catalyst carrier and a preparation method and application of the activated carbon / aluminium oxide composite type catalyst carrier. The preparation method comprises the steps of washing circularly with 20-35% hydrochloric acid in a boiling state, wherein the mass ratio of hydrochloric acid to activated carbon is (5-20):1, performing oxidation with 10-50% nitric acid, wherein the mass ratio of an oxidizing agent to activated carbon is (20-40):1, kneading the activated carbon, aluminium oxide and an assistant into cakes in a kneading machine, extruding the kneaded cakes through an extruding machine, drying the extruded carrier, and roasting in nitrogen protection atmosphere to prepare the activated carbon / aluminum oxide composite type catalyst carrier. The activated carbon / aluminum oxide composite type catalyst carrier is suitably used as a residual oil hydrogenation catalyst carrier of a fixed bed, and is particularly used as the residual oil hydrodemetallization catalyst carrier. The activated carbon / aluminum oxide composite type catalyst carrier has high desulfurization rate up to 86.4-88.3%, high denitrification rate up to 58.3-60.5% and high demetalization rate up to 87.2-90.4%.

Description

technical field [0001] The invention relates to an activated carbon / alumina composite catalyst carrier and its preparation and application. The catalyst carrier is suitable for the hydrogenation field, and is especially suitable as a hydrogenation demetallization catalyst carrier for residual oil and oil sand asphalt. Background technique [0002] At present, with the intensification of the trend of crude oil becoming inferior and heavy, the demand for light oil products increasing, and the environmental protection regulations becoming stricter, it is of great significance to vigorously develop the research and development of residual oil hydrogenation technology, and the development of high-performance residual oil Hydrogenation catalysis is at its core. [0003] The reactivity of residual oil hydrogenation catalysts not only depends on the inherent catalytic properties of the active components, but also has a close relationship with the properties of the catalyst support. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J21/18C10G45/08C10C3/02
Inventor 刘元东赵愉生赵元生范建光于双林那美琦谭青峰周志远张志国程涛崔瑞利张春光
Owner PETROCHINA CO LTD
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