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Hydrogenation catalyst with high denitrification activity

A hydrogenation catalyst and catalyst technology are applied in the field of oil hydrogenation, which can solve the problem of low denitrification activity, and achieve the effects of improving hydrogenation activity, reducing sulfidation temperature, and improving hydrogenation denitrification activity.

Pending Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of low denitrification activity of hydrogenation catalysts used in aviation kerosene and other oil products in the prior art, the present invention provides a hydrogenation catalyst with high denitrification activity, which can be used in the hydrogenation process of aviation kerosene to produce qualified 3# aviation fuel products

Method used

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  • Hydrogenation catalyst with high denitrification activity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Add 1L of deionized water into the reaction tank as the bottom liquid, put 1L of the mixed solution of aluminum sulfate and nickel sulfate and 1L of sodium hydroxide solution into the raw material tank respectively, and control the temperature of the reaction tank at 60°C. The aluminum sulfate solution was injected into the reaction tank at a rate of 10 mL / min, while the sodium hydroxide solution was injected and the rate was adjusted to keep the pH value of the reaction tank solution constant at 8.0, and the neutralization was completed after 120 min. In the reaction tank at a constant temperature of 85°C and a constant pH value of 8.5, aged for 5 hours, then washed with deionized water for 3 times, filtered, dried the filter cake at 60°C for 3 hours, and then dried at 110°C for 5 hours to obtain modified alumina Powder. Based on the modified alumina powder, the mass fraction of nickel oxide is 5.0%, and the rest is alumina.

[0035] (2) Mix the modified alumina pow...

Embodiment 2

[0039] (1) Add 1L of deionized water into the reaction tank as the bottom liquid, put 1L of the mixed solution of aluminum sulfate and nickel sulfate and 1L of sodium hydroxide solution into the raw material tank respectively, and control the temperature of the reaction tank at 60°C. The aluminum sulfate solution was injected into the reaction tank at a rate of 12 mL / min, while the sodium hydroxide solution was injected and the rate was adjusted to keep the pH value of the reaction tank solution constant at 8.5, and the neutralization was completed after 120 min. In the reaction tank at a constant 80°C and a constant pH value of 9.0, aged for 5 hours, then washed with deionized water for 3 times, filtered, dried the filter cake at 65°C for 5 hours, and then dried at 120°C for 3 hours to obtain modified alumina Powder. Based on the modified alumina powder, the mass fraction of nickel oxide is 6.0%, and the rest is alumina.

[0040] (2) Mix the modified alumina powder prepared ...

Embodiment 3

[0044] (1) Add 1L of deionized water into the reaction tank as the bottom liquid, put 1L of the mixed solution of aluminum sulfate and cobalt sulfate and 1L of sodium metaaluminate solution into the raw material tank respectively, and control the temperature of the reaction tank at 60°C. The aluminum sulfate solution was injected into the reaction tank at a rate of 12 mL / min, while the sodium hydroxide solution was injected and the rate was adjusted to keep the pH value of the reaction tank solution constant at 9.0, and the neutralization was completed after 120 min. In the reaction tank at a constant temperature of 85°C and a constant pH value of 9.0, aged for 4 hours, then washed with deionized water for 3 times, filtered, dried the filter cake at 70°C for 5 hours, and then dried at 120°C for 3 hours to obtain modified alumina Powder. Based on the modified alumina powder, the mass fraction of cobalt oxide is 6.0%, and the rest is alumina.

[0045] (2) Mix the modified alumi...

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Abstract

A hydrogenation catalyst with high denitrification activity comprises a carrier and an active component, and the carrier is alumina; the active components are VIB-group metal sulfide, VIII-group metal sulfide and VIII-group metal oxide, the VIB-group metal sulfide and the VIII-group metal sulfide are dispersed in the catalyst carrier and on the surface of the catalyst carrier, and the VIII-group metal oxide is dispersed on the surface of the catalyst. The preparation method of the catalyst comprises the following steps: mixing and coprecipitating aluminum salt, a group VIII metal salt solution and a precipitator to obtain pseudo-boehmite powder, kneading and forming the pseudo-boehmite powder with group VIB metal salt or group VIB metal oxide, vulcanizing, dipping in the group VIII metal salt solution, and drying to obtain the catalyst. The catalyst is applied to the hydrotreating process of light distillate oil and aviation kerosene and the gas desulfurization and denitrification process, and has a better denitrification effect and higher mechanical strength.

Description

technical field [0001] The invention relates to the technical field of hydrogenation of oil products, in particular to a hydrogenation catalyst with high denitrification activity. Background technique [0002] The jet fuel hydrogenation process includes many complex chemical reactions, including hydrodemercaptanization, deacidification, denitrogenation, olefin and naphthalene saturation reactions, etc., which can solve the corrosion problem of jet fuel and improve the stability of jet fuel, and can moderately improve the jet fuel. Sooty point. Therefore, jet fuel hydrogenation catalysts should have high reactivity for hydrodemercaptanization, deacidification, denitrogenation, olefin and naphthalene saturation. [0003] As the demand for jet fuel increases, refineries are increasing jet fuel production, and increasing the dry point of straight-run jet fuel raw materials is an effective way to increase jet fuel output. With the improvement of the dry point of jet fuel raw ma...

Claims

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Application Information

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IPC IPC(8): B01J27/051B01J35/10B01J37/03B01J37/20C10G45/08
CPCB01J27/0515B01J37/03B01J37/20C10G45/08C10G2300/70C10G2400/08C10G2300/202B01J35/615B01J35/635
Inventor 郭蓉刘丽杨成敏段为宇周勇李扬姚运海孙进郑步梅
Owner CHINA PETROLEUM & CHEM CORP
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