Regeneration method for removing catalyst carbon deposit
A catalyst and carbon deposition technology, which is applied in catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as complex cleaning agent components, complex operation, and phenol toxicity, and achieve easy implementation and operation The effect of low temperature and short operation process
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Embodiment 1
[0025] Take out the Na-K-Mg / HZSM-5 catalyst deactivated by coke deposits from the reaction tube and dry it in an oven for 1.5 hours at a drying temperature of 105 degrees Celsius. Take out the dried catalyst and weigh 0.65 g.
[0026] The dried catalyst was soaked in methanol at 20°C for 5 hours, and the volume of methanol used was 1.5 times the volume of the catalyst. The catalyst is filtered out, put into a muffle furnace and dried at a constant temperature of 100°C for 3 hours, then the muffle furnace temperature is raised to 200°C for 4 hours, and finally the muffle furnace temperature is raised to 400°C for 4 hours. Take out and weigh 0.59g. The weight of the catalyst was reduced by 9.2% after regeneration, indicating that the coke deposits were removed.
[0027] The catalyst is loaded into the HL-1A multifunctional micro-high pressure reaction system manufactured by Hangzhou Huali Pump Industry Co., Ltd. to catalyze the reaction of methanol to low-carbon olefins. The reactio...
Embodiment 2
[0032] The Ni-Co-Mn / SAPO-34 catalyst deactivated by coke deposits was taken out of the reaction tube and dried in an oven for 1.5 hours at a drying temperature of 105 degrees Celsius. The dried catalyst was taken out and weighed 0.64 g.
[0033] The dried catalyst was soaked in methanol at 30°C for 4 hours, and the volume of methanol used was twice the volume of the catalyst. Filter out the catalyst, put it in a muffle furnace and dry it at a constant temperature of 110°C for 2.5 hours, then raise the temperature of the muffle furnace to 250°C for 3 hours, and finally raise the temperature of the muffle furnace to 450°C for 3 hours. Take out and weigh 0.57g. The weight of the catalyst was reduced by 10.9% after regeneration, indicating that the coke deposits were removed.
[0034] The catalyst is loaded into the HL-1A multifunctional micro-high pressure reaction system manufactured by Hangzhou Huali Pump Industry Co., Ltd. to catalyze the reaction of methanol to low-carbon olefins...
Embodiment 3
[0039] Take out the Na-K / HZSM-5 catalyst deactivated by coke deposits from the reaction tube and dry it in an oven for 1.5 hours at a drying temperature of 105 degrees Celsius. Take out the dried catalyst and weigh 0.64g.
[0040] The dried catalyst was soaked in methanol at 40°C for 3 hours, and the volume of methanol used was 2.5 times the volume of the catalyst. Filter out the catalyst, put it in a muffle furnace and dry at a constant temperature of 120°C for 2 hours, then raise the temperature of the muffle furnace to 300°C for 2 hours, and finally raise the temperature of the muffle furnace to 500°C for 2 hours. Take out and weigh 0.58g. The weight of the catalyst was reduced by 9.3% after regeneration, indicating that the coke deposits were removed.
[0041] The catalyst is loaded into the HL-1A multifunctional micro-high pressure reaction system manufactured by Hangzhou Huali Pump Industry Co., Ltd. to catalyze the reaction of methanol to low-carbon olefins. The reaction te...
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