Boron containing hydrodesulphurization catalyst and preparation method thereof

A hydrodesulfurization and catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of low activity and achieve the effect of improving desulfurization activity

Active Publication Date: 2008-12-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a new, more active gasoline distillate hydrodesulfurization catalyst and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0013] According to the preparation method of the catalyst provided by the present invention, the said carrier containing at least one kind of alumina with δ or θ structure can be prepared by any method in the prior art. For example, it can be made by roasting one or more mixtures (shaped or unshaped) selected from trihydrated alumina, monohydrated alumina and amorphous aluminum hydroxide; A mixture of one or more of hydrated alumina, monohydrated alumina and amorphous aluminum hydroxide is mixed with alumina having a δ and / or θ structure (shaped or unshaped) and fired.

[0014] The molding is carried out by conventional methods, such as tablet pressing, ball rolling, extrusion and other methods. When forming by the usual method, it is permissible to introduce auxiliary agents into the mixture to ensure the smooth progress of the forming. For example, when extruding, an appropriate amount of extrusion aids and water can be introduced into the mixture, and then extruded. The t...

Embodiment 1

[0029]Take by weighing alumina precursor (preparation by sodium metaaluminate-sodium sulfate method, trade name Changling dry rubber powder, Changling Oil Refinery Catalyst Factory product, wherein gibbsite content 68 weight %) 500 grams (dry basis) and Mix 20 grams of extrusion aid Tianqing powder evenly. Prepare 220 ml of solution with 15 grams of 85% nitric acid and deionized water, add the solution to the alumina precursor and knead it evenly, extrude it into a clover-shaped strip with a circumscribed circle diameter of 1.4 mm on the extruder, and bake it at 120 ° C Drying, calcining at 940°C for 4 hours, immersing in 125g boric acid-water solution containing 15% by weight of boric acid at 80°C for 4 hours, drying at 120°C for 2 hours, and calcining at 450°C for 2 hours to obtain carrier Z1.

[0030] Take by weighing 22.2 grams of ammonium heptamolybdate, 11.4 grams of cobalt nitrate, and 30 milliliters of ammoniacal liquor of 25% by weight with deionized water to be mixed...

Embodiment 2

[0032] Weighed 500 grams of alumina precursor (trade name SB, product of Condea, Germany, wherein the content of gibbsite is 85% by weight), and subjected to hydrothermal treatment at 200° C. for 4 hours to obtain A1. A1 and aluminum oxide precursor (prepared by sodium metaaluminate-sodium sulfate method, trade name Changling dry rubber powder, Changling Oil Refinery Catalyst Factory product, wherein gibbsite content 68% by weight) 500 grams (dry basis) 1. 40 grams of extrusion aid Tianqing powder were mixed evenly. Use 30 grams of 85% nitric acid and deionized water to prepare 415 ml of solution, add the solution to the alumina precursor and knead evenly, extrude it into a clover-shaped strip with a circumcircle diameter of 1.4 mm on the extruder, and bake it at 120 ° C Drying, calcining at 960°C for 2 hours, immersing in 250 g of boric acid-water solution containing 19% by weight of boric acid at 90°C for 4 hours, drying at 120°C for 2 hours, and calcining at 450°C for 2 hou...

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Abstract

The invention discloses a boron-bearing hydrodesulfurization catalyst and a preparation method thereof. The boron-bearing hydrodesulfurization catalyst contains a carrier, at least one VIB hydrogenative reactive metal composition and at least one VIII hydrogenative reactive metal composition and boron; the catalyst is calculated by oxide and a catalyst is taken as a reference, the content of the VIB metal composition is between 0.5 and 35 weight percent, the content of the VIII metal composition is between 0.1 and 10 weight percent, the content of the boron is between 0.2 and 6 weight percent, and the content of the carrier is between 49 and 99.2 weight percent, wherein, the carrier contains alumina provided with a delta and / or theta structure. Compared with the prior catalyst, the catalyst has higher hydrodesulfurization activity.

Description

technical field [0001] The invention relates to a hydrorefining catalyst and a preparation method thereof, more specifically to a boron-containing hydrodesulfurization catalyst and a preparation method thereof. Background technique [0002] As we all know, air pollution brings serious environmental problems. Excessive engine emissions are one of the main causes of air pollution. In recent years, in order to meet the requirements of protecting the environment, countries around the world have put forward stricter restrictions on the composition of engine fuel in order to reduce the emission of harmful substances. SOx, the combustion product of sulfide in gasoline, is one of the main harmful substances, and it is also one of the main substances that poison the catalyst of the catalytic converter of automobile exhaust gas. [0003] In the presence of catalysts, the method of removing sulfur in gasoline fractions by hydrogenation is the most effective method commonly used. Amo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/882C10G45/08
Inventor 姜锋李明丰聂红褚阳李会峰
Owner CHINA PETROLEUM & CHEM CORP
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