Sulfur transfer catalyst and and the preparation thereof

A technology of catalyst and sulfur transfer, which is applied in the direction of catalyst carrier, physical/chemical process catalyst, catalytic cracking, etc. It can solve the problem of reducing the adsorption and desorption efficiency of sulfur transfer catalyst, reducing the wear resistance of sulfur transfer catalyst microspheres, and failing to play a catalytic role. Function and other issues, to achieve the effect of facilitating large-scale industrial production, no impact on wear resistance, and uniform distribution

Inactive Publication Date: 2004-03-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this method to prepare sulfur transfer catalysts, one of the disadvantages is that a large part of the active metal oxides are wrapped in the bulk phase of spinel microspheres and cannot play a catalytic role, which also reduces the SO of the sulfur transfer catalysts. x Adsorption and desorption efficiency; the second disadvantage is that too much of such metal oxides or metal salts in the slurry before spray drying will greatly reduce the wear resistance of the sulfur transfer catalyst microspheres

Method used

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Experimental program
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preparation example Construction

[0040] According to the preparation method of the catalyst provided by the present invention, the cerium compound is selected from one or more of any water-soluble cerium compounds, including water-soluble compounds of trivalent and tetravalent cerium, wherein the preferred cerium compound is selected from cerium One or more of nitrates and chlorides.

[0041] According to the preparation method of the sulfur transfer catalyst provided by the present invention, the immersion time in the step (5) is more than 5 minutes, preferably 10-60 minutes.

[0042] According to the preparation method of the sulfur transfer catalyst provided by the present invention, the filtration described in step (6) is a liquid-solid separation method commonly used in the production of solid catalysts, such as belt filtration, drum filtration and the like.

[0043] According to the preparation method of the sulfur transfer catalyst provided by the present invention, the drying and roasting of the filte...

Embodiment 1

[0047] The sulfur transfer catalyst prepared by the method provided by the invention.

[0048] Microsphere carrier containing magnesium aluminum spinel composition (ZT 1 ) preparation: add 20.2 kilograms of decationized water into a stirred tank, add 7.63 kilograms of pseudoboehmite slurry (produced by Shandong Aluminum Works, solid content 32.0% by weight) and 0.655 liters of chlorinated mixed rare earth solution (containing rare earth Oxide RE 2 o 3 244.1 g / L, wherein the weight ratio of each rare earth component is La 2 o 3 :Sm 2 o 3 :Yb 2 o 3 : Lu 2 o 3 =79.0: 4.5: 1.9: 0.44, the chlorinated mixed rare earth is produced by Shanghai Yuelong Rare Earth Co., Ltd.), added 0.80 liters of 18% by weight hydrochloric acid under stirring, and stirred for 30 minutes to obtain the acidic alumina slurry with a pH value of 1.65. The slurry was solid The content is 8.85% by weight. Add 1 liter of V to the slurry 2 o 5 - Oxalic acid complex solution and beating for 10 minut...

Embodiment 2

[0055] Adopt the sulfur transfer catalyst (C) prepared by the method provided by the invention 2 ).

[0056] Prepare sulfur transfer catalyst by the method in embodiment 1 and impregnation condition, difference is that carrier adopts ZT 2 . C 2 The chemical composition, specific surface area, pore volume and wear index of the samples are listed in Table 1. The content of cerium in the sulfur transfer catalyst was determined by X-ray fluorescence spectrometry, and other chemical compositions were obtained by calculation.

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Abstract

A sulfur-transferring catalyst comprises a cerium oxide of 2í½30úÑ by weight as the active component and a spinel compound of 70í½98úÑ by weight containing magnetium and aluminum as the carrier. The spinel compound containing magnetium and aluminum comprises MgO of 5í½70úÑ, Al2O3 of 30í½ 95%, an oxide of a rare earth element of 0í½15 úÑ except cerium, V2O5 of 0í½10úÑ,relative to the total weight of the compound. Moreover, the invention provides a method of producing the catalyst. The sulfur-transferring catalyst has a high efficiency of absorbing and desorbing SO x.

Description

technical field [0001] The invention relates to a sulfur transfer catalyst and its preparation, more specifically, a sulfur transfer catalyst containing a magnesium-aluminum spinel composition and a preparation method thereof. Background technique [0002] Fluid Catalytic Cracking (FCC) is the most important method to obtain light oil products with high use value such as gasoline and diesel oil from heavy feedstock oil. FCC units generally consist of a riser reactor and a regenerator. In the process of FCC operation, cracking catalyst microspheres with cracking activity and heavy raw oil undergo high-temperature cracking reaction in the riser reactor to generate light oil and gas products. At the same time, the cracking catalyst loses cracking activity due to coking . Deactivated cracking catalysts require regeneration. In the regenerator, the deactivated cracking catalyst is regenerated at high temperature in the presence of air. Because the coke on the surface of the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/02B01J23/10B01J32/00C10G11/04C10G49/02
Inventor 蒋文斌黄轶达志坚郑曼英张万虹李凤珍杨青徐志诚
Owner CHINA PETROLEUM & CHEM CORP
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