The method of improving the selective oxidation hydrogen removal rate of co mixed gas
A mixed gas, selective oxidation technology, applied in chemical instruments and methods, carbon monoxide, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of high CO loss rate and low hydrogen removal rate, and achieve good The effect of technical effects
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Embodiment 1
[0018] Catalyst preparation:
[0019] Weigh 100 grams of alumina carrier, according to 0.5% Pd / Al 2 o 3 The content of the catalyst is configured as follows: select palladium nitrate, prepare an impregnation solution according to the palladium load, immerse the alumina carrier in the solution for 10 hours, and dry it in vacuum at room temperature for 12 hours to obtain a solid. The solid was then dried at 120°C for 4 hours and calcined at 450°C for 6 hours to obtain the required 0.5% Pd / Al 2 o 3 (Active components are in weight percent, the same below) Catalyst.
[0020] Weigh the required amount of catalyst and load it into a fixed-bed reactor, and then use a mixed gas of oxygen and nitrogen with an oxygen volume content of 10% as the processing gas at a temperature of 200 ° C and a volume space velocity of 3000 hours -1 , under the condition of a pressure of 0.5 MPa, the CO mixed gas is selectively oxidized and dehydrogenated by the catalyst for 3 hours, and then the CO ...
Embodiment 2
[0022] Prepare 0.4%Pd / Al according to the catalyst preparation method of embodiment 1 2 o 3 catalyst.
[0023] Weigh the required amount of catalyst and load it into a fixed-bed reactor, and then use a mixed gas of oxygen and nitrogen with an oxygen volume content of 10% as the processing gas, at a temperature of 120°C and a volume space velocity of 5000 hours -1 , under the condition of pressure of 1.5MPa, the CO mixed gas is treated with the catalyst for selective oxidation and hydrogen removal for 8 hours, and then the CO mixed gas is directly fed into the raw material gas for selective oxidation and hydrogen removal for reaction, and the hydrogen in the reaction effluent is oxidized to water. Among them, the CO mixed gas selectively oxidizes the raw material gas to remove hydrogen, the volume percentage of hydrogen is 8%, the reaction temperature is 200°C, and the volume space velocity is 2000 hours -1 , the reaction pressure is 0.5MPa, the molar ratio of hydrogen in the...
Embodiment 3
[0025] Prepare 0.2%Pd / Al according to the catalyst preparation method of embodiment 1 2 o 3 catalyst.
[0026] Weigh the required amount of catalyst and load it into a fixed-bed reactor, and then use a mixed gas of oxygen and nitrogen with an oxygen volume content of 50% as the processing gas at a temperature of 250°C and a volume space velocity of 8000 hours -1 , under the condition of 0.1MPa pressure, the CO mixed gas is treated with the catalyst for selective oxidation and hydrogen removal for 1 hour, and then the CO mixed gas is directly fed into the raw material gas for selective oxidation and hydrogen removal for reaction, and the hydrogen in the reaction effluent is oxidized to water. Among them, the CO mixed gas selectively oxidizes the raw material gas to remove hydrogen, the volume percentage of hydrogen is 6%, the reaction temperature is 260°C, and the volume space velocity is 6000 hours -1 , the reaction pressure is 1.0MPa, the mol ratio of hydrogen in the oxygen...
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