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Desulfurization additive for product obtained by hydrocarbon oil cracking and preparation and application thereof

A technology of sulfur reduction aids and additives, which is applied in the field of sulfur reduction aids for cracked products containing zinc, can solve the problems of poor wear resistance, low heavy oil conversion ability and sulfur reduction performance, etc. Sulfur effect, high gasoline yield effect

Active Publication Date: 2013-06-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the heavy oil conversion ability and sulfur reduction performance of this agent are not high, and the wear resistance is poor

Method used

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  • Desulfurization additive for product obtained by hydrocarbon oil cracking and preparation and application thereof
  • Desulfurization additive for product obtained by hydrocarbon oil cracking and preparation and application thereof
  • Desulfurization additive for product obtained by hydrocarbon oil cracking and preparation and application thereof

Examples

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preparation example Construction

[0023] In the preparation method of the sulfur-reducing additive provided by the present invention, in step (4), the slurry obtained in step (3) is spray-dried, and then calcined. The calcining temperature is preferably 500-700° C., and the calcining time is preferably 1-6 hours.

[0024] In order to make the prepared catalyst have better wear resistance and better sulfur reduction effect, in the preparation method of the auxiliary agent, step (2) adds clay to the slurry obtained in step (1), and step (3) Add binder in the slurry that step (2) obtains.

[0025] In the preparation method of the sulfur-reducing additive provided by the present invention, the methods of beating, spray drying and roasting are well known to those skilled in the art, and will not be repeated in the present invention.

[0026] In the method for reducing sulfur of catalytic cracking products provided by the present invention, the amount of the additive provided by the present invention in the catalyst...

Embodiment 1

[0030] This example illustrates the auxiliary agent provided by the present invention and its preparation method.

[0031] Mix 1.6 kg of mesoporous material (on a dry basis, the same below), deionized water and 840 g of zinc chloride, and beat to obtain a slurry with a solid content of 16% by weight. Add 250 g of titanium dioxide to the slurry and stir for 20 minutes , add 2.0 kg of kaolin, make a slurry, then add 7.1 kg of aluminum sol, stir evenly, then spray dry, and roast at 600 ° C for 3 hours to obtain the auxiliary agent C1 provided by the present invention. The composition and physical and chemical properties of C1 are listed in Table 1.

Embodiment 2

[0033] This example illustrates the auxiliary agent provided by the present invention and its preparation method.

[0034] Mix and beat 1 kg of mesoporous material, deionized water and 1.67 kg of zinc chloride to obtain a slurry with a solid content of 15% by weight, add 90 g of cobalt nitrate to the slurry, continue stirring for 30 minutes, and then add 2.6 kg The kaolin was beaten, and then 6.0 kg of aluminum sol was added, the above slurry was stirred evenly, then spray-dried, and roasted at 500°C for 4 hours to obtain the auxiliary agent C2 provided by the present invention. The composition and physical and chemical properties of C2 are listed in Table 1.

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Abstract

The invention relates to a desulfurization additive for a product obtained by hydrocarbon oil cracking and preparation and application thereof. The additive contains the following components in percentage by weight: 3-40 percent of mesoporous material, 5-50 percent of zinc component in zinc oxide terms, 5-80 percent of clay, 10-50 percent of caking agent in oxide terms and 0.1-10 percent of metal(s), except for zinc, in oxide terms; and the metal(s) except for the zinc is(are) one or a plurality of lanthanide metal, Ti, Co, Ni, Fe, Mn, Ga and Zr. The preparation method of the additive comprises the following steps of: (1) mixing the mesoporous material and deionized water, adding a zinc-containing compound, mixing and pulping, and mixing and pulping the obtained slurry and a compound of the metals except for the zinc; (2) mixing the slurry obtained in the step (1) and the clay; (3) mixing the slurry obtained in the step (2) and the caking agent; and (4) carrying out spray drying on the slurry obtained in the step (3), and roasting. The additive provided by the invention has higher conversion rate and desulfurization performance and high gasoline yield.

Description

technical field [0001] The invention relates to a cracking product sulfur-reducing additive, in particular to a zinc-containing cracking product sulfur-reducing additive used in a catalytic cracking process. Background technique [0002] The combustion products of sulfur in gasoline are important air pollutants. For this reason, countries all over the world have established strict fuel standards to limit the content of sulfur in gasoline. Since more than 80% of the sulfur in my country's finished gasoline comes from FCC gasoline, reducing the sulfur content in FCC gasoline has become the key to reducing the sulfur content of finished gasoline. Adding a sulfur-reducing catalyst or a sulfur-reducing additive to the FCC unit to achieve the purpose of reducing sulfur by changing the cracking mode of sulfide in the FCC raw material is a commonly used technology for desulfurization of FCC gasoline. [0003] A large number of studies have proved that some metal elements such as Zn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/10B01J23/06B01J23/80B01J23/34B01J23/08C10G11/04
Inventor 于善青朱玉霞王振波田辉平
Owner CHINA PETROLEUM & CHEM CORP
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