A sulfur-resistant methanation process of coke oven gas instead of natural gas
A technology for sulfur-resistant methanation and natural gas replacement. It is used in the petroleum industry, gas fuel, and fuel. It can solve the problems of sulfur poisoning and deactivation, and is not resistant to sulfur. Wide range of effects of sulfur
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Embodiment 1
[0048] Preparation of Sulfur-Resistant Methanation Catalyst for Slurry Bed Coke Oven Gas:
[0049] 60-80 mesh, specific surface area 150m 2 / g γ-Al 2 o 3 Calcined at 450°C for 5h, at a temperature of 35°C and a stirring speed of 120r / min, the Mo(NO 3 ) 3 ·5H 2 O, Ni(NO 3 ) 2 ·6H 2 O, γ-Al 2 o 3 According to the mass percentage of Mo: Ni: Al 25%: 30%: 45% equal volume impregnation and stirring for 8 hours, after standing for 4 hours, evaporate at 80°C until viscous, then put it in an oven for 12 hours and dry at 110°C, and then grind to 60-80 mesh Place in a muffle furnace and bake at 550°C for 6 hours to obtain a precursor; the volume composition is 25%H 2 and 75%N 2 , in an atmosphere with a flow rate of 80mL / min, using a two-stage temperature program, first raising the temperature to 350 °C at 5 °C / min, and then raising the temperature to 550 °C at 3 °C / min for 6 hours to obtain a mass percentage of Mo:Ni:Al of 25 %: 30%: 45% Mo-Ni-Al slurry bed coke oven gas sul...
Embodiment 2
[0056] Preparation of Sulfur-Resistant Methanation Catalyst for Slurry Bed Coke Oven Gas:
[0057] Calcinate γ-Al2O3 with 160-200 mesh and specific surface area of 280m2 / g at 550°C for 7h, and then mix Mo(NO3)3·5H2O, Co(NO3)2·6H2O at 30°C and stirring speed of 200r / min , Ni(NO3)2·6H2O, γ-Al2O3 according to the mass percentage of Mo: Co: Ni: Al 20%: 10%: 35%: 35% equal volume impregnation and stirring for 24h, after standing for 10h, evaporate at 70°C to viscous , and then placed in an oven for 24 hours at 100°C, and then ground to 160-200 mesh, placed in a muffle furnace and roasted at 500°C for 8 hours to obtain a precursor; the volume composition is 15% H2 and 85% N2, and the flow rate is 120mL / In the atmosphere of min, adopt two-stage temperature program, first raise the temperature to 350°C at 5°C / min, and then raise the temperature to 600°C at 2°C / min for constant temperature reduction for 12h to obtain the mass percentage of Mo:Co:Ni:Al 20%:10 %: 35%: 35% Mo-Co-Ni-Al...
Embodiment 3
[0064] Preparation of Sulfur-Resistant Methanation Catalyst for Slurry Bed Coke Oven Gas:
[0065] Calcinate SiO2 with 80-100 mesh and specific surface area of 180m2 / g at 450°C for 4h. Under the conditions of temperature 25°C and stirring speed of 120r / min, Ni(NO3)2·6H2O, Co(NO3)2·6H2O, SiO2 According to the mass percentage of Ni: Co: Si 30%: 20%: 50% equal volume impregnation and stirring for 8 hours, after standing for 4 hours, evaporate to viscous at 80°C, then dry in an oven at 110°C for 12 hours, and then grind to 80-100 mesh Place in a muffle furnace and roast at 450°C for 4 hours to prepare the precursor; in an atmosphere with a volume composition of 20% H2 and 80% N2, and a flow rate of 100mL / min, use two-stage temperature programming, first at 4°C / min Raise the temperature to 350°C, then raise the temperature to 550°C at 2°C / min for constant temperature reduction for 6 hours to obtain Ni-Co-Si slurry bed coke oven gas sulfur-resistant methane with a mass percentage ...
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