Preparation method of vulcanized catalyst, vulcanized catalyst and application of vulcanized catalyst
A technology of catalyst and sulfided state, which is applied in the application field of the sulfided catalyst in the hydrodesulfurization reaction, can solve problems such as difficult loading, and achieve the effects of high catalyst activity, environmental friendliness, and stable sulfided catalyst
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preparation example Construction
[0015] The invention provides a method for preparing a sulfided catalyst, comprising performing passivation treatment a and passivation treatment b on the sulfided hydrogenation catalyst, wherein the passivation treatment a adopts distillate oil for passivation, and the passivation treatment b adopts oxygen-containing Substances are passivated.
[0016] The method for sulfiding the hydrogenation catalyst can be wet sulfidation or dry sulfidation, and the sulfidation includes using a sulfur-containing substance to sulfide the hydrogenation catalyst under sulfidation conditions, and the sulfur-containing substance is preferably selected from hydrogen sulfide, elemental sulfur , sulfene, carbon disulfide, dimethyl disulfide, polysulfide in one or more. The conditions of vulcanization are conventional conditions. For example, the conditions of wet vulcanization can be: vulcanization temperature-1 , preferably 0.5~6h -1 , more preferably 1~3h -1 , the vulcanization time is 1-48h,...
example 1
[0027] Measure 100mL of 16-18 mesh gasoline hydrogenation DS-1 catalyst, pack it in the reactor, the sulfuration carrier oil is straight-run gasoline, CS2 is the curing agent, the content of the curing agent in the curing carrier oil is 2% by weight, and the distillation range is 40 ~200°C, at a temperature of 320°C, a pressure of 1.6MPa, and a space velocity of 2h -1 , The catalyst was vulcanized under the vulcanization condition of the standard gas-oil volume ratio of 200, and the vulcanization time was 12 hours. The catalyst was named P1. After vulcanization, switch to FCC gasoline with a sulfur content of 1700μg / g and an olefin content of 24.5%, and reduce the reaction temperature to 280°C, the reaction pressure is 1.6MPa, the standard gas-oil volume ratio is 400, and the space velocity is 4h -1 , After 48 hours of stability, samples were taken to analyze the sulfur content and olefin content of the product.
[0028] Base case 2
[0029] Measure 100mL of DS-1 catalyst fo...
Embodiment 1
[0032] Measure 100mL of 16-18 mesh gasoline hydrogenation DS-1 catalyst, fill it in the reactor, use straight-run gasoline as the carrier oil, CS2 as the vulcanizing agent, and the content of the vulcanizing agent in the vulcanized carrier oil is 2% by weight. , pressure 1.6MPa, space velocity 2h -1 , The catalyst was vulcanized under the vulcanization condition of the standard gas-oil volume ratio of 200, the vulcanization time was 18 hours, and the oil and gas were stopped after vulcanization. Lower the temperature to 200°C, use straight-run gasoline as the passivating agent for passivation treatment, the passivation temperature is 200°C, and the space velocity is 2.0h -1 , pressure 1.6MPa, standard gas-oil volume ratio 200. After the first step of passivation, stop the oil and gas, lower the reaction temperature to 80°C, switch the raw gas to air, passivate at 0.3MPa for 12 hours, and then unload it. Measure the surface temperature of the sulfided catalyst, which is named ...
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