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Gasoline hydrofining catalyst and preparation method thereof

A gasoline hydrogenation and catalyst technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problems of gasoline octane number drop, olefin oversaturation, etc.

Inactive Publication Date: 2021-09-14
郑州瑞尔铁路安全技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst will promote the skeletal isomerization of olefins in gasoline, resulting in oversaturation of olefins, resulting in a decrease in the octane number of gasoline

Method used

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  • Gasoline hydrofining catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Take pseudo-boehmite, add sodium hydroxide, deionized water, and 1,6-hexanediamine, stir and mix, add silica sol, stir for 30 minutes, and age for 18 hours to obtain the first solution;

[0033] Mix sodium metaaluminate and sodium hydroxide, add deionized water and sodium silicate solution, cool to 0°C, and cut for 25 minutes to prepare the second solution;

[0034] The first solution was slowly added to the second solution, sheared for 2 hours, and crystallized. The crystallization process was as follows: temperature 150°C, time 36 hours, washing to neutrality, and drying at 60°C to obtain carrier A. The ratio of silicon to aluminum in carrier A is 6.2;

[0035] (2) Take sulfur and add chloroform, heat, stir and dissolve, add coupling agent and carrier A, uniformly disperse, add nano-aluminum powder, and ultrasonically disperse;

[0036] Vacuum drying at a temperature of 90°C, passing through dry nitrogen, calcining at a temperature of 1000°C for 5 hours, washing ...

Embodiment 2

[0043] (1) Take pseudo-boehmite, add sodium hydroxide, deionized water, and 1,6-hexanediamine, stir and mix, add silica sol, stir for 35 minutes, and age for 21 hours to obtain the first solution;

[0044] Mix sodium metaaluminate and sodium hydroxide, add deionized water and sodium silicate solution, cool to 0°C, and cut for 30 minutes to prepare the second solution;

[0045] Slowly add the first solution to the second solution, shear for 2.5 hours, and crystallize. The crystallization process is as follows: temperature 155°C, time 42h, washing to neutrality, and drying at 105°C to obtain carrier A , the ratio of silicon to aluminum in carrier A is 7.8;

[0046] (2) Take sulfur and add chloroform, heat, stir and dissolve, add coupling agent and carrier A, uniformly disperse, add nano-aluminum powder, and ultrasonically disperse;

[0047] Vacuum drying at 105°C, passing through dry nitrogen, calcining at 1050°C for 8 hours, washing with water, and drying at 105°C to obtain carr...

Embodiment 3

[0054] (1) Take pseudo-boehmite, add sodium hydroxide, deionized water, and 1,6-hexanediamine, stir and mix, add silica sol, stir for 40 minutes, and age for 24 hours to obtain the first solution;

[0055] Mix sodium metaaluminate and sodium hydroxide, add deionized water and sodium silicate solution, cool to 0°C, and cut for 35 minutes to prepare the second solution;

[0056] Slowly add the first solution to the second solution, shear for 3 hours, and crystallize. The crystallization process is as follows: temperature 160°C, time 48h, washing to neutrality, and drying at 120°C to obtain carrier A. The ratio of silicon to aluminum in carrier A is 9.4;

[0057] (2) Take sulfur and add chloroform, heat, stir and dissolve, add coupling agent and carrier A, uniformly disperse, add nano-aluminum powder, and ultrasonically disperse;

[0058] Vacuum drying at 120°C, passing through dry nitrogen, calcining at 1100°C for 12 hours, washing with water, and drying at 120°C to obtain carr...

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Abstract

The invention discloses a gasoline hydrofining catalyst and a preparation method thereof, and the preparation method comprises the following steps: (1) taking pseudo-boehmite and sodium hydroxide, conducting stirring and mixing, and adding silica sol to prepare a carrier A; (2) adding sulfur into the carrier A and nano aluminum powder, and conducting roasting to obtain a carrier B; (3) dipping and roasting zirconium isopropoxide, and introducing carbon disulfide for reaction to prepare a carrier; (4) mixing cobalt nitrate, ammonium heptamolybdate and an auxiliary agent, and conducting dipping and roasting to prepare a catalyst C; and (5) conducting vulcanizing to obtain the catalyst. Pseudo-boehmite and silica sol are taken to prepare the carrier A, the carrier A reacts with sulfur and nano aluminum powder to form a carrier B, zirconium isopropoxide is used as a raw material to prepare zirconium oxide through roasting, then zirconium oxide reacts with carbon disulfide to prepare zirconium disulfide, and the zirconium disulfide is embedded with aluminum ions to prepare the carrier, so that the micropore specific surface area of the prepared carrier can be increased, the electrical property is good, electron transfer is promoted, the reaction activity is improved, and the hydrogenation performance of the prepared catalyst is improved.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a gasoline hydrotreating catalyst and a preparation method thereof. Background technique [0002] People are paying more and more attention to the environment, and harmful substances such as automobile exhaust emissions will cause serious environmental pollution, which is contrary to green environmental protection. With the deterioration of crude oil and the increasingly stringent requirements of environmental protection regulations on oil quality, the domestic oil refining industry is facing new challenges, and stricter restrictions on the content of sulfur and olefins in gasoline have been put forward. At present, the hydrorefining process is one of the main means to produce clean gasoline / diesel, and its core is the hydrotreating catalyst. The hydrotreating catalyst used in industry is a solid catalyst with alumina as the carrier and loaded active components. However, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/882B01J35/10C10G45/08
CPCB01J23/882C10G45/08B01J35/61
Inventor 单翠华程平许秋萍徐俊魁
Owner 郑州瑞尔铁路安全技术有限责任公司
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