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Fraction oil hydrodesulfurizing catalyst and its prepn process

A hydrodesulfurization and catalyst technology, which is applied in the direction of refining to remove heteroatoms, etc., can solve the problems of not being able to satisfy deep desulfurization, complex preparation process of step-by-step impregnation, and unsatisfactory deep desulfurization activity, and achieve simple process and high preparation The method is simple and the effect of reducing the production cost

Active Publication Date: 2007-12-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese patent ZL94116957.X discloses a method for preparing a distillate hydrodesulfurization catalyst, but the catalyst uses Mo-Co as the active component, and the deep desulfurization activity is not ideal
[0006] Chinese patent ZL99113281.5 has formulated W-Mo-Ni-P co-impregnation solution, and prepared catalysts by multiple co-impregnation methods, but the preparation process of multiple impregnations is complicated and the production cycle is long. In addition, W-Mo-Ni-P The combination cannot well meet the needs of deep desulfurization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] Preparation of Vector T-1

[0023] Carrier T-1 was prepared by mixing 1000g of aluminum hydroxide powder, 20ml of nitric acid, 700ml of deionized water and extrusion aid, extruding into a clover shape, drying at 110°C for 3 hours, and roasting at 550°C for 3 hours.

[0024] Preparation of Vector T-2

[0025] Use 900g of aluminum hydroxide powder, add 18ml of nitric acid, 600ml of deionized water, 450g of silica sol and extrusion aid to mix and roll, extrude into a clover shape, dry at 110°C for 3 hours, and roast at 550°C for 3 hours to obtain the carrier T-2.

Embodiment 1

[0035] Mix 60 grams of ammonium metatungstate, 21 grams of nickel carbonate, 20 grams of cobalt carbonate, 45 grams of molybdenum oxide, 20 grams of phosphoric acid and 130 ml of deionized water, and dissolve at 95 ° C for 3 hours to obtain W-Mo-Ni-Co- 200 ml of P co-impregnation solution, 200 g of calcined carrier T-1 were impregnated with the above impregnation solution at room temperature, dried at 120°C for 3 hours, and calcined at 500°C for 3 hours to obtain catalyst E.

Embodiment 2

[0037] Mix 30 grams of ammonium metatungstate, 20 grams of nickel carbonate, 20 grams of cobalt carbonate, 85 grams of molybdenum oxide, 20 grams of phosphoric acid and 130 milliliters of deionized water, and then heat up to 95 ° C and dissolve for 3 hours to obtain W-Mo-Ni- 200 ml of Co-P co-dipping solution, 200 g of calcined carrier T-1 was impregnated with the above-mentioned dipping solution at room temperature, dried at 120°C for 3 hours, and calcined at 500°C for 3 hours to obtain catalyst F.

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PUM

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Abstract

The present invention discloses one kind of fraction oil hydrodesulfurizing catalyst and its preparation process. The catalyst has alumina or silicon-containing alumina as carrier, W, Mo, Ni and Co as active components, and phosphorus assistant. It is prepared through saturation co-soaking process, and has active metal components possessing synergistic effect high dispersed, and high activity, especially high hydrodesulfurizing activity. It is used in the hydrodesulfurizing process, especially deep hydrodesulfurizing process, of various kinds of fraction oil.

Description

technical field [0001] The invention relates to a distillate oil hydrogenation desulfurization catalyst and a preparation method thereof, in particular to a distillate oil deep desulfurization catalyst and a preparation method thereof. Background technique [0002] A typical hydrodesulfurization catalyst is usually supported by alumina or silicon-containing alumina, and the metal elements of Group VIII and VIB are used as active components. In order to improve the activity and stability of the catalyst, various improvement methods are often used, such as Carrier modification, optimization of preparation methods, addition of additives, etc. Commonly used additives are P, F, B, Ti, Zr, etc. [0003] For hydrodesulfurization reaction, the activity order of different metal component combinations is Co-Mo>Ni-Mo≈Ni-W>Co-W; while for hydrogenation activity, the activity order of metal component combinations is Ni-W>Ni -Mo>Co-Mo>Co-W. Co-Mo catalyst is superior to ...

Claims

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Application Information

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IPC IPC(8): C10G45/08
Inventor 郭蓉周勇姚运海段为宇丁莉崔国英
Owner CHINA PETROLEUM & CHEM CORP
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