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Catalytic cracking material for reducing sulfur content of gasoline and preparation method thereof

A technology of catalytic cracking and sulfur content, which is applied in the direction of catalytic cracking, chemical instruments and methods, cracking, etc., can solve the problems of reducing the sulfur content of gasoline in the catalytic cracking process, low addition amount, etc., and achieves convenient application, low roasting temperature, The effect of simple preparation method

Inactive Publication Date: 2013-04-10
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although phase change aids include vanadium-containing substances such as vanadium pentoxide, vanadium naphthenate, and ammonium metavanadate, the addition amount (in terms of metal elements) is relatively low, no more than 7% of the weight of kaolin, and the generated molybdenum After subsequent acid and alkali deep extraction, the purity of mullite is greatly improved, but the vanadium in it is basically extracted, so it does not have the function of reducing the sulfur content of gasoline in the catalytic cracking process

Method used

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  • Catalytic cracking material for reducing sulfur content of gasoline and preparation method thereof
  • Catalytic cracking material for reducing sulfur content of gasoline and preparation method thereof
  • Catalytic cracking material for reducing sulfur content of gasoline and preparation method thereof

Examples

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Effect test

Embodiment 1

[0028] In this embodiment, the vanadium-containing mullite material is prepared. Take 8g of ammonium metavanadate, add 2000mL of deionized water, add oxalic acid until the solid is completely dissolved, then add 600g of Suzhou kaolin, soak at 85°C for 6 hours, dry at 120°C, grind through a 100-mesh sieve, and roast at 1250°C for 1 hour to prepare the vanadium-containing Mullite material. The vanadium-containing mullite material was washed three times with dilute oxalic acid solution, washed with deionized water until neutral, and dried at 120°C. The obtained sample number is V1. X-ray fluorescence spectrometry analysis of the vanadium content in the sample, and converted to V 2 o 5 Measurement, the vanadium content of the sample is 1.5%; XRD analysis of the sample crystal phase, the XRD spectrum of V1 is shown in the attached figure, the characteristic peak of mullite is marked with black dots in the figure; the mullite content is 85% according to the measurement and calcul...

Embodiment 2

[0030] In this embodiment, the vanadium-containing mullite material is prepared. Take 35g of ammonium metavanadate, add 2000mL of deionized water, add oxalic acid until the solid is completely dissolved, then add 600g of Suzhou kaolin spray microspheres (from Shanghai Naco Auxiliary Co., Ltd.), soak at 85°C for 6 hours, and dry at 120°C. Grinding through a 100-mesh sieve, calcining at 950° C. for 3 hours to prepare the vanadium-containing mullite material. The vanadium-containing mullite material was washed three times with dilute oxalic acid solution, washed with deionized water until neutral, and dried at 120°C. The obtained sample number is V2. X-ray fluorescence spectrometry analyzes the vanadium content in the sample and converts it to V 2 o 5 Measurement, the vanadium content of the sample was 7.2%; XRD analysis of the crystal phase of the sample determined that the mullite content was 68%.

Embodiment 3

[0032]In this embodiment, the vanadium-containing mullite material is prepared. Take 110g of vanadyl sulfate, add 300mL of deionized water until the solid is completely dissolved, then add 600g of Suzhou kaolin, stir and mix thoroughly for 6 hours at 85°C, filter, dry the filter cake at 120°C, grind through a 100-mesh sieve, and roast at 900°C for 5h The vanadium-containing mullite material is prepared. The vanadium-containing mullite material was washed three times with dilute oxalic acid solution, washed with deionized water until neutral, and dried at 120°C. The obtained sample number is V3. X-ray fluorescence spectrometry analysis of the vanadium content in the sample, and converted to V 2 o 5 Measurement, the vanadium content of the sample is 17%; XRD analysis of the crystal phase of the sample shows that the mullite content is 66%.

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Abstract

The invention discloses a catalytic cracking material for reducing sulfur content of gasoline. The material comprises a vanadium-bearing mullite material, and can further comprise one or more rare earth metal oxides. The vanadium-bearing mullite material is prepared by introducing a vanadium-bearing compound into kaolin, roasting at a relatively lower temperature and conducting phase change reaction. A rare earth compound is added by an impregnation or coprecipitation method. The catalytic cracking material can serve as a catalytic cracking assistant to be used with the existing catalytic cracking catalyst after spray granulation forming, or serve as a carrier component for preparing a catalytic cracking catalyst having a sulfur reduction function for the gasoline. Vanadium in the catalytic cracking material is fixed in a mullite crystalline phase, so that the catalytic cracking material has a good effect on sulfur reduction, and a structure of a catalyst molecular sieve cannot be damaged.

Description

technical field [0001] The invention relates to a material for reducing the sulfur content of gasoline in the catalytic cracking process and a preparation method thereof, and more specifically to a vanadium-containing mullite material capable of reducing the sulfur content of catalytic cracking gasoline and a preparation method thereof. Background technique [0002] my country's national standard for unleaded gasoline for vehicles (GB17930-1999) requires gasoline sulfur content ≯ 800 μg / g, and in 2005 further required sulfur content ≯ 500 μg / g, Beijing, Shanghai and Guangzhou further required sulfur content ≯ 150 μg / g. In my country, catalytic cracking (FCC) gasoline accounts for more than 80% of the total finished gasoline, and about 90% of the sulfur in finished gasoline comes from FCC gasoline. Therefore, reducing the sulfur content of FCC gasoline is the key to producing low-sulfur gasoline that meets the standard. [0003] To reduce the sulfur content of FCC gasoline, m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/22C10G11/04
Inventor 陈辉陆善祥李君李明霞
Owner EAST CHINA UNIV OF SCI & TECH
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