A sulfur-resistant methanation process of coke oven gas to natural gas
A sulfur-resistant methanation and coke oven gas technology, which is applied in the petroleum industry, gas fuel, fuel, etc., can solve the problems of catalyst poisoning and deactivation, methanation catalysts are not resistant to sulfur, etc., and achieve good isothermal performance, convenient operation, stability and easy The effect of controlling and reducing energy consumption
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Embodiment 1
[0045] Preparation of Sulfur-Resistant Methanation Catalyst for Slurry Bed Coke Oven Gas:
[0046] 160-200 mesh, specific surface area 280m 2 / g γ-Al 2 o 3 Calcined at 550°C for 7h, at a temperature of 25°C and a stirring speed of 200r / 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 30%: 20%: 50%, impregnate and stir for 24 hours, after standing for 10 hours, evaporate to viscous at 70°C, then put it in an oven for 24 hours at 110°C, and then grind to 160-200 mesh Place in a muffle furnace and bake at 450°C for 8 hours to obtain a precursor; the volume composition is 15%H 2 and 85%N 2 , in an atmosphere with a flow rate of 120mL / min, a two-stage temperature program was adopted, firstly the temperature was raised to 350°C at 5°C / min, and then the temperature was raised to 600°C at 2°C / min for constant temperature reduction for 12 hours to obtain a mass percentage of Mo:Ni:Al of 30 %: 20%: 50% Mo-Ni-Al slur...
Embodiment 2
[0052] Preparation of Sulfur-Resistant Methanation Catalyst for Slurry Bed Coke Oven Gas:
[0053] 120-140 mesh, specific surface area 240m 2 / g TiO 2 Calcined at 500°C for 6h, at a temperature of 50°C and a stirring speed of 240r / min, the Mo(NO 3 ) 3 ·5H 2 O, Co(NO 3 ) 2 ·6H 2 O, Fe(NO 3 ) 3 9H 2 O, TiO 2 According to the mass percentage of Mo: Co: Fe: Ti 25%: 15%: 25%: 35% equal volume impregnation and stirring for 24 hours, after standing for 8 hours, evaporate at 90°C until viscous, then put it in an oven to dry at 130°C for 24 hours, and then grind To 120-140 mesh, place in a muffle furnace and bake at 600 ° C for 5 hours to obtain a precursor; the volume composition is 25% H 2 and 75%N 2 , in an atmosphere with a flow rate of 180mL / min, two-stage temperature programming is adopted, firstly the temperature is raised to 350°C at 8°C / min, and then the temperature is raised to 600°C at 3°C / min for constant temperature reduction for 10 hours to obtain the mass of ...
Embodiment 3
[0059] Preparation of Sulfur-Resistant Methanation Catalyst for Slurry Bed Coke Oven Gas:
[0060] 60-80 mesh, specific surface area 150m 2 / g SiO 2 Calcined at 400°C for 4h, at a temperature of 25°C and a stirring speed of 100r / min, the W(NO 3 ) 3 ·5H 2 O, Mo(NO 3 ) 3 ·5H 2 O, La(NO 3 ) 3 ·6H 2 O, SiO 2 According to the mass percentage of W:Mo:La:Si 10%: 30%: 25%: 35% equal volume impregnation and stirring for 8 hours, after standing for 4 hours, evaporate to viscous at 60°C, then put it in an oven to dry at 80°C for 12 hours, and then grind To 60-80 mesh, place in a muffle furnace and bake at 450 ° C for 4 hours to obtain a precursor; the volume composition is 15% H 2 and 85%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 4°C / min, and then raising the temperature to 500°C at 2°C / min for 6 hours to obtain the mass percentage of W:Mo:La:Si 10%: 30%: 25%: 35% W-Mo-La-Si slurry bed...
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