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Catalytic cracking sulfur-reducing material and preparation method thereof

A catalytic cracking and sulfur reduction technology, applied in catalytic cracking, chemical instruments and methods, cracking, etc., can solve problems such as diffusion limitation, catalytic reaction limitation, and small pores

Active Publication Date: 2012-10-17
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the weight and deterioration of raw materials, more and more molecules of raw materials and their toxic and harmful impurities such as sulfides exceed 3nm (such as catalytic cracking of residual oil). Traditional microporous catalytic materials are limited by diffusion due to their small pores. Severe limitations that largely limit the catalytic reactions of macromolecules

Method used

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  • Catalytic cracking sulfur-reducing material and preparation method thereof
  • Catalytic cracking sulfur-reducing material and preparation method thereof
  • Catalytic cracking sulfur-reducing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This example illustrates the sulfur reducing material provided by the present invention and its preparation method.

[0027] 12g surfactant fatty alcohol polyoxyethylene ether (C 16 EO 10 ) into 90 g of acidic aqueous solution containing 1 mol / L nitric acid, stirred at 60°C for 2 hours to fully dissolve the surfactant; dissolved quantitative vanadium oxalate in the above surfactant solution, and stirred for 20 minutes; Add lipid to the above solution and stir vigorously for 10 minutes to obtain a clear sol; put the sol in a sealed box and place it in a water bath at 50°C until it gels; the wet gel continues to age in a water bath at 50°C for 3 days; take out the wet Gel, remove the precipitated mother liquor, oven-dry at 60°C for 6 days, and then bake at 500°C for 5 hours to obtain the vanadium-doped sulfur-reducing material provided by the present invention, which is designated as SV-01. The amount of vanadium oxalate added makes the dry basis of the final sulfur-red...

Embodiment 2

[0032] This example illustrates the sulfur reducing material provided by the present invention and its preparation method.

[0033] 12g surfactant fatty alcohol polyoxyethylene ether (C 16 EO 10 ) into 70g of acidic aqueous solution containing 1mol / L nitric acid, stirred at 60°C for 2 hours to fully dissolve the surfactant; dissolved quantitative aluminum nitrate and vanadium oxalate in the above surfactant solution, and stirred for 20 minutes; Add methyl silicate to the above solution and stir vigorously for 10 minutes to obtain a clear sol; put the sol in a sealed box and place it in a water bath at 50°C until it gels; the wet gel continues to age in a water bath at 50°C for 3 days Take out the wet gel, remove the precipitated mother liquor, dry in an oven at 60°C for 6 days, and then bake at 500°C for 5 hours to obtain the vanadium and aluminum doped sulfur reducing material provided by the present invention, which is designated as SAV-01. The amount of vanadium oxalate a...

Embodiment 3

[0038] This example illustrates the sulfur reducing material provided by the present invention and its preparation method.

[0039] 12g surfactant fatty alcohol polyoxyethylene ether (C 16 EO 10 ) into 120 g of acidic aqueous solution containing 1 mol / L nitric acid, stirred at 70°C for 2 hours to fully dissolve the surfactant; dissolved quantitative vanadium oxalate in the above surfactant solution, and stirred for 20 minutes; Add 38g of methyl orthosilicate and stir for 20 minutes; then add the mixed solution of butyl titanate and methyl orthosilicate to the above surfactant and vanadium oxalate solution, stir vigorously for 10 minutes to obtain a clear sol; put the sol into In a sealed box, put it in a water bath at 40°C until it gels; the wet gel continues to age in a water bath at 40°C for 3 days; take out the wet gel, remove the precipitated mother liquor, dry it in an oven at 60°C for 6 days, and then dry it at 500°C The vanadium and titanium doped sulfur-reducing mate...

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Abstract

The invention relates to a catalytic cracking sulfur-reducing material and a preparation method thereof. The catalytic cracking sulfur-reducing material comprises the following compositions by weight percent: 0.5 to 20 percent of vanadium as calculated by V2O5, 0.1 to 30 percent of aluminum as calculated by Al2O3, 0.1 to 30 percent of titanium as calculated by TiO2, and the balance of silicon oxide, and the total weight of various compositions is 100 percent. The preparation method comprises the following steps: firstly, dissolving a surfactant into acid water solution, wherein the solution temperature is between 25 and 95 DEG C; secondly, mixing a silicon source and the acid water solution containing the surfactant for hydrolysis after the surfactant is completely dissolved, and obtaining sol; thirdly, curing the sol at a temperature of between 30 and 80 DEG C to obtain wet gel; fourthly, continuously aging the obtained wet gel for 1 to 10 days at a temperature of between 30 and 200 DEG C; fifthly, drying the aged wet gel for 1 to 7 days at a temperature of between 50 and 120 DEG C; and sixthly, roasting the dried gel for 1 to 20 hours at a temperature of between 300 and 800 DEG C to obtain the mesoporous sulfur-reducing material. The catalytic cracking sulfur-reducing material has high petroleum hydrocarbon cracking activity and obvious desulfurization activity.

Description

technical field [0001] The invention relates to a catalytic cracking sulfur reducing material with sulfur reducing effect, which is used in the catalytic cracking process of hydrocarbons to reduce the sulfur content of catalytic cracked gasoline and a preparation method thereof. Background technique [0002] Catalytic cracked gasoline accounts for more than 80% of the total finished gasoline, and more than 90% of the sulfur content in finished gasoline comes from catalytic gasoline. Synchronous in-situ removal of sulfides during the catalytic cracking process does not require additional investment. By adding a small amount of sulfur-reducing additives during the catalytic cracking process, the distribution and quality of cracked products can be effectively reduced. of sulfur content. [0003] US6,482,315 discloses a non-molecular sieve desulfurizer loaded with high vanadium content, the carrier is alumina. It is combined with a single component and a catalytic cracking act...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/04B01J23/22B01J21/00B01J21/06
Inventor 李晓刚吴俊升杜伟祖凤华李磊王红秋张新朴佳锐
Owner PETROCHINA CO LTD
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