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Catalytic cracking desulfurizing assistant agent

A desulfurization aid, catalytic cracking technology, applied in catalytic cracking, cracking, petroleum industry, etc., can solve expensive problems, achieve the effect of reducing heavy oil yield, reducing gasoline sulfur content, and improving desulfurization performance

Active Publication Date: 2007-07-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis of mesoporous materials often uses expensive templates and organic silicon sources, and most of them have to undergo high-temperature hydrothermal post-treatment processes.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Synthesis of Mg-SA-1: Put the aluminum sulfate solution in a beaker, add ammonia water drop by drop under stirring, adjust the pH value of the system to 8, neutralize the gelling temperature at 55°C, add water glass under stirring, Raise the temperature to 80°C for aging for 2 hours, then dissolve quantitative magnesium nitrate in water, add it to the above slurry, and continue aging for 4 hours; 2O=1:0.8:15 weight ratio, carry out ion exchange on the precipitate at 60°C to remove the sodium ions therein, repeat the exchange twice, each time for 0.5 hours, wash and filter with water after each exchange, and then in 120°C Drying at low temperature for 10 hours, followed by calcination at 600°C for 4 hours to obtain a magnesium-containing mesoporous material, denoted as Mg-SA-1. The material has a pseudo-boehmite phase structure with a specific surface area of ​​342.1m 2 / g, the pore volume is 1.115ml / g, the average pore diameter is 13.0nm, the most probable pore diamete...

Embodiment 2

[0023] Synthesis of Ti-SA-1: The preparation method is the same as in Example 1, wherein titanium tetrachloride is used instead of magnesium nitrate to obtain a titanium-containing mesoporous material, which is designated as Ti-SA-1. The material has a pseudo-boehmite phase structure with a specific surface area of ​​394.6m 2 / g, the pore volume is 1.054ml / g, the average pore diameter is 10.7nm, the most probable pore diameter is 7.6nm, and its elemental analysis weight chemical composition is 0.20Na 2 O·69.0Al 2 o 3 26.2SiO2 2 4.5TiO 2 .

[0024] The preparation process of the desulfurization aid is the same as in Example 1, wherein the added mesoporous material is Ti-SA-1, and the desulfurization aid SC-2 is obtained through spraying and roasting according to the method of Example 1.

[0025] The composition of the desulfurization aid SC-2 is: 38% by weight of kaolin, 24% by weight of pseudo-boehmite, 8% by weight of aluminum sol, and 30% by weight of Ti-SA-1.

Embodiment 3

[0027] Synthesis of V-SA-1: The preparation method is the same as in Example 1, wherein vanadium oxalate is used instead of magnesium nitrate to obtain a vanadium-containing mesoporous material, which is designated as V-SA-1. The material has a pseudo-boehmite phase structure with a specific surface area of ​​381.2m 2 / g, the pore volume is 1.140ml / g, the average pore diameter is 11.9nm, the most probable pore diameter is 8.7nm, and its elemental analysis weight chemical composition is 0.18Na 2 O·69.2Al 2 o 3 26.6SiO2 2 4.0V 2 o 5 .

[0028] The preparation process of the desulfurization aid is the same as in Example 1, wherein the added mesoporous material is V-SA-1, and the desulfurization aid SC-3 is obtained by spraying and roasting according to the method of Example 1.

[0029] The composition of the desulfurization aid SC-3 is: 38% by weight of kaolin, 24% by weight of pseudo-boehmite, 8% by weight of aluminum sol, and 30% by weight of V-SA-1.

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PUM

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Abstract

The invention discloses a catalytic cracking desulfurization additive. It is characterized in that the catalyst comprises active desulfurization component, carrier and adhesive; the active desulfurization component is mesopore material of 1- 80 wt%, the waterless compound of said mesopore material is (0-0.3)Na2O .(40-85)Al2O3 .(10-55)SiO2 .(1-20)MxOy weighed by oxidant, and M is one metal selected from IIA group, IB group, IIB group, IVB group, VB group, VIB group, VIIB group and VIIIB group or lanthanide elements in element periodic table, x is the highest adicity reaction of O, y is stable adicity reaction of M; the material possesses phase structure of Pseudoboemite, the specific surface area is 200- 400 m2 / g, pore capacity is 0.5- 2.0 ml / g, average pore diameter is 8- 20 nm, and the size of most of the pores is 5- 15 nm in diameter. The additive can be directly mixed with cracking catalyst and then be used for catalytic cracking reaction, and also can be added into catalytic cracking reactor as additive, and it can increase the crude oil and heavy oil conversion rate and reduce sulfur content in FCC gasoline.

Description

technical field [0001] The invention relates to a catalytic cracking desulfurization aid, in particular to a catalytic cracking desulfurization aid which uses mesoporous materials as desulfurization active components. Background technique [0002] Fluid Catalytic Cracking (FCC) is a petroleum refining process, which is the main process of converting heavy fractions such as vacuum distillate oil or residues of heavier components into fractions with smaller molecules. It has been used on a large scale in petroleum refining commercial applications. About 70-80% of gasoline comes from gasoline obtained from fluid catalytic cracking (FCC), and about 90% of the sulfur comes from FCC gasoline. Due to the increasing emphasis on environmental protection and the emission of Euro II and Euro III With the promulgation of standards, the restrictions on sulfur content, olefins and aromatics in gasoline have become more stringent. Therefore, the removal of sulfur compounds in the catalyti...

Claims

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Application Information

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IPC IPC(8): C10G11/00
Inventor 郑金玉罗一斌宗保宁舒兴田
Owner CHINA PETROLEUM & CHEM CORP
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