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Selective hydrogenation catalyst for gasoline and process

A catalyst and selective technology, used in refining to remove heteroatoms, etc., can solve the problems of loss of metal components and additives, and achieve the effect of preventing the loss of alkali metals, good selectivity, and enhanced adaptability

Inactive Publication Date: 2006-04-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of activated carbon support is that the supported metal components and additives are easy to lose

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The specific surface area of ​​200g is 362m 2 The silicon-containing and phosphorus-containing (phosphorus content is 1.9%) alumina carrier with a pore volume of 0.76ml / g is placed in a spray-soaked rolling pan. Spray 190ml of aqueous solution containing 12.5g of potassium nitrate in chemical method. After the solution is sprayed, continue to rotate in the rolling pot for 30 minutes, then place it for 18 hours, dry at 110°C for 3 hours, and then increase the temperature at a rate of 200°C / hour. Bake at 450°C for 2 hours. Weigh it and place it in a rolling pan. Dissolve 7.6g of citric acid in 170ml of clean water, add 5.2g of cobalt carbonate, boil to dissolve, after cooling, add 25% ammonia water to 170ml, add 11.5g of ammonium molybdate to the above solution, dissolve it with 25% ammonia water The volume of the solution was adjusted to 200ml, and it was kept airtight. Use 193ml of molybdenum and cobalt ammonium solution for spray immersion. After the solution is spr...

Embodiment 2

[0021] The carrier formed by extruding 200g of dry glue alumina with a large specific surface area has a specific surface area of ​​266m 2 / g, the pore volume is 0.61ml / g, put it in the spraying and dipping rolling pot, and under the condition of rotation, spray 154ml of aqueous solution containing 16.6g of potassium dihydrogen phosphate into the alumina carrier in the rolling pot in an atomized manner, and the solution After spraying, continue to rotate in the rolling pan for 30 minutes, then place it for 18 hours, dry at 110°C for 3 hours, and then rise to 450°C for 2 hours at a heating rate of 200°C / hour. Weigh it and place it in a rolling pan. Dissolve 21.1g of citric acid in 122ml of clean water, add 14.6g of cobalt carbonate, boil to dissolve, after cooling, add 25% ammonia water to 170ml, add 29.4g ammonium molybdate to the above solution, dissolve it with 25% ammonia water The volume of the solution was adjusted to 200ml, and it was kept airtight. Use 153ml of molybde...

Embodiment 3

[0023] Potassium dihydrogen phosphate is changed into 154ml containing 2.3g potassium nitrate and 24.0g containing 53w% phosphoric acid mixed aqueous solution in the embodiment 2, after solution is sprayed, continue to rotate 30 minutes in rolling pan, then place 18 hours, at 110 ℃ for 3 hours, then rise to 450 ℃ for 2 hours at a heating rate of 200 ℃ / hour. Weigh it and place it in a rolling pan. Dissolve 7.8g of citric acid in 172ml of clean water, add 5.4g of cobalt carbonate, boil to dissolve, after cooling, add 25% ammonia water to 170ml, add 8.4g ammonium molybdate to the above solution, and dissolve it with 25% ammonia water The volume of the solution was adjusted to 200ml, and it was kept airtight. Use 156ml of molybdenum and cobalt ammonium solution for spray immersion. After the solution is sprayed, continue to rotate in the rolling pot for 30 minutes, then place it for 18 hours, dry at 110°C for 3 hours, and then increase the temperature at a rate of 200°C / hour. Ca...

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Abstract

The present invention relates to a selective hydro-desulfurization catalyst of gasoline and process for using said catalyst. Said invented catayst uses alumina as carrier, uses molybdenum and cobalt as active component, at the same time contains adjuvant potassium and phosphorus, and the optimized atomic ratio of phosphorus and potassium is 1-2. Said invented catalyst has good selectivity and stability, and at the same time has proper activity, and is mainly used for selective hydro-desulfurization of catalytic cracked gasoline.

Description

1. Technical field [0001] The invention relates to a gasoline selective hydrogenation desulfurization catalyst and a two-stage processing desulfurization process using the catalyst, in particular to a catalytic cracking gasoline selective desulfurization catalyst and a two-stage selective hydrogenation desulfurization process. 2. Background technology [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 sulfide 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/06
Inventor 段为宇周勇赵乐平李崇慧郭蓉
Owner CHINA PETROLEUM & CHEM CORP
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