A kind of regeneration method of deactivated catalyst
A deactivated catalyst, catalyst technology, applied in the direction of catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc.
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Embodiment 1
[0026] Take a deactivated hydrotreating catalyst with a carbon deposition of 6.5%, and its active metal components are Mo and Ni, and perform carbon burning regeneration treatment in an oxygen-containing atmosphere. At a heating rate of 3°C / min, the temperature was raised to 200°C, kept at a constant temperature for 10 hours, and then continued to rise to 330°C, kept at a constant temperature for 8 hours. The obtained sample had a carbon content of 1.5% and a sulfur content of 1.8%. The obtained sample was named C-1.
[0027] Take a deactivated hydrotreating catalyst with a carbon deposition of 8.2%, and its active metal components are Mo, Ni, and Co, and use different conditions to perform carbon regeneration treatment in an oxygen-containing atmosphere. At a heating rate of 3°C / min, the temperature was raised to 200°C, kept at a constant temperature for 10 hours, and then continued to rise to 320°C, kept at a constant temperature for 10 hours. The obtained sample had a carbo...
Embodiment 2
[0029] Take 61g of tetrakis hydroxymethyl phosphorus sulfate aqueous solution (solution concentration is 75wt%), spray catalyst C-1, after aging for 3 hours, treat at 100°C for 3 hours, take 14g of DMDS and 9ml of hydrazine hydrate and spray it, Heat treatment at a low temperature of 100°C for 3 hours. That is, the desired catalyst C-3 is obtained.
Embodiment 3
[0031] Take 55g of tetrahydroxyethylphosphorus sulfate, dilute it with water to form a 70ml solution, spray the catalyst C-2 with the solution, and after aging for 3 hours, heat treat at 80°C for 3 hours, take 12g of carbon disulfide and 9ml of hydrazine hydrate solution and spray , heat treatment at 100°C for 3 hours. That is, the desired catalyst C-4 is obtained.
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