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Preparation method of hydrodesulfurization catalyst

A hydrodesulfurization and catalyst technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of limited olefin saturation activity inhibition

Active Publication Date: 2020-05-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that adding activated carbon in this way has limited inhibitory effect on olefin saturation activity

Method used

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  • Preparation method of hydrodesulfurization catalyst
  • Preparation method of hydrodesulfurization catalyst
  • Preparation method of hydrodesulfurization catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Dissolve 20.9g of citric acid in 120ml of clean water, add 15.5g of cobalt carbonate, boil to dissolve, after cooling, add 25% (weight) ammonia water to 170ml, add 29.5g of ammonium molybdate to the above solution, dissolve and use 25 % ammonia water to adjust the volume of the solution to 200ml, and keep it airtight. Put 200 g of the carrier in a rolling pot, spray and immerse it with 150ml of molybdenum and cobalt ammonium solution, after the solution is sprayed, continue to rotate in the rolling pot for 30 minutes, then place it for 18 hours, and dry it at 110°C for 3 hours. Then, the temperature was raised to 500° C. and calcined for 3 hours at a rate of 200° C. / hour to obtain a first-stage catalyst A. Put a section of catalyst in a rolling pot, spray and soak it with 100ml of the aqueous solution containing 10g of sodium methylene bis-naphthalene sulfonate, after the solution is sprayed, continue to rotate in the rolling pot for 30 minutes, then place it for 18 hou...

Embodiment 2

[0035]Dissolve 11.1g of citric acid in 125ml of clean water, add 8.2g of cobalt carbonate, boil to dissolve, after cooling, add 25% (weight) ammonia water to 170ml, add 14.5g of ammonium molybdate to the above solution, dissolve and use 25 % ammonia water to adjust the volume of the solution to 200ml, and keep it airtight. Put 200 g of the carrier in a rolling pot, spray and immerse it with 150ml of molybdenum and cobalt ammonium solution, after the solution is sprayed, continue to rotate in the rolling pot for 30 minutes, then place it for 18 hours, and dry it at 110°C for 3 hours. Then, the temperature was raised to 500° C. and calcined for 3 hours at a rate of 200° C. / hour to obtain a first-stage catalyst B. Put a section of the catalyst in a rolling pot, spray and soak it with 110ml of the aqueous solution containing 6g of sodium methylene bis-naphthalene sulfonate, after the solution is sprayed, continue to rotate in the rolling pot for 30 minutes, then place it for 18 ho...

Embodiment 3

[0037] Dissolve 28.1g of citric acid in 90ml of clean water, add 20.9g of cobalt carbonate, boil to dissolve, after cooling, add 25% (weight) ammonia water to 170ml, add 45.6g of ammonium molybdate to the above solution, dissolve and use 25 % ammonia water to adjust the volume of the solution to 200ml, and keep it airtight. Put 200 g of the carrier in a rolling pot, spray and immerse it with 150ml of molybdenum and cobalt ammonium solution, after the solution is sprayed, continue to rotate in the rolling pot for 30 minutes, then place it for 18 hours, and dry it at 110°C for 3 hours. Then, the temperature was raised to 500° C. and calcined for 3 hours at a rate of 200° C. / hour to obtain a first-stage catalyst C. Put a section of the catalyst in a rolling pot, spray and soak it with 96ml of the aqueous solution containing 12g of sodium methylene bis-naphthalene sulfonate, after the solution is sprayed, continue to rotate in the rolling pot for 30 minutes, then place it for 18 h...

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Abstract

The invention discloses a preparation method of a hydrodesulfurization catalyst. The preparation method comprises the following steps: (1) loading active metals Co and Mo on a carrier, and drying androasting the loaded carrier to obtain a primary catalyst; (2) subjecting the primary catalyst to saturated impregnation with an aqueous sodium methylene bis-naphthalene sulfonate solution, and then carrying out drying so as to obtain a secondary catalyst; (3) carrying out saturated impregnation on the secondary catalyst by using liquid olefin, and then carrying out heat treatment; and (4) carryingout vulcanization treatment on the catalyst subjected to heat treatment to obtain the catalyst. The catalyst prepared by the invention has high selectivity and high stability, and is suitable for theselective hydrodesulfurization process of oil products, especially gasoline.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation desulfurization catalyst. Background technique [0002] In recent years, in order to protect the environment, governments around the world have made great efforts to reduce the emission of harmful substances in the exhaust of internal combustion engines. The quality specifications of motor fuels have become increasingly stringent, especially requiring the reduction of sulfur content in motor gasoline. Combustion product SO of sulfur compounds in gasoline X It is one of the main harmful substances of automobile exhaust, and also one of the catalyst poisons of automobile exhaust conversion devices. Therefore, countries around the world have enacted legislation to impose stricter and stricter restrictions on the sulfur content in gasoline. [0003] As we all know, the sulfur content of straight-run gasoline is mainly related to the sulfur content of crude oil. Even though the sulfur conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J37/02C10G45/08
CPCB01J27/051B01J37/0203C10G45/08C10G2300/202B01J35/635B01J35/633B01J35/638B01J35/615Y02A50/20
Inventor 段为宇郭蓉周勇姚运海丁莉杨成敏孙进刘丽
Owner CHINA PETROLEUM & CHEM CORP
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