Method for regenerating and pre-vulcanizing hydrogenation catalyst
A hydrogenation catalyst and catalyst technology, applied in the direction of catalyst regeneration/reactivation, catalyst activation/preparation, chemical instruments and methods, etc., can solve the problems of high energy consumption and long production cycle, and achieve simple equipment and high sulfur retention. , the effect of reducing energy consumption
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Embodiment 1
[0039] The amount of deactivated hydrotreating catalyst FH-DS is 100 grams, which is regenerated in an air atmosphere. Roast at a constant temperature of 280°C for 3 hours, then raise the temperature to 480°C for 3 hours, then lower the temperature to 180°C. Mix 10g of elemental sulfur with 5g of (NH 4 ) 2 S mix and heat mix at 150°C. The mixed vulcanizing agent was then impregnated into the catalyst and treated at 180° C. for 3 hours. When the temperature is lowered to 90° C., add 20 g of organic solvent (the organic solvent is a fraction of coking kerosene), the proportion of carbon atoms in the organic solvent is not less than 50%, keep the temperature for 3 hours, and then cool down to room temperature. The activity evaluation was carried out, and the catalyst activity results are shown in Table 2.
Embodiment 2
[0041] The amount of deactivated hydrotreating catalyst FH-DS is 100 grams, which is regenerated in an air atmosphere. Roast at a constant temperature of 320°C for 4 hours, then raise the temperature to 500°C and bake for 4 hours, then lower the temperature to 200°C. 12g of elemental sulfur and 6g of (NH 4 ) 2 S mixing, heat mixing at 150°C. Then the mixed vulcanizing agent is impregnated with the catalyst, and treated at 200°C for 6 hours, and when the temperature is lowered to 80°C, add 25g of organic solvent (organic solvent is coking kerosene fraction), and the proportion of carbon atoms in the organic solvent is 9-12. Less than 50%, keep the temperature for 2 hours, then drop to room temperature. The activity evaluation was carried out, and the catalyst activity results are shown in Table 2.
Embodiment 3
[0043] The amount of deactivated hydrotreating catalyst FH-DS is 100 grams, which is regenerated in an air atmosphere. Roast at a constant temperature of 300°C for 3 hours, then raise the temperature to 500°C and bake for 3 hours, then lower the temperature to 150°C. Mix 10g of elemental sulfur with 5g of (NH 4 ) 2 S mixing, heat mixing at 135°C. Then impregnate the heated and mixed vulcanizing agent into the catalyst, and treat it at 150°C for 6 hours. When the temperature is lowered to 85°C, add 25g of organic solvent (organic solvent is coking kerosene fraction), the proportion of carbon atoms in the organic solvent is 9-12 Not less than 50%, keep the temperature for 3 hours, then drop to room temperature. The activity evaluation was carried out, and the catalyst activity results are shown in Table 2.
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