Preparation method of high-performance carbon molecular sieve for separating carbon dioxide/methane
A carbon dioxide and carbon molecular sieve technology, applied in separation methods, chemical instruments and methods, methane capture, etc., to achieve the effects of increasing adsorption capacity, improving efficiency, and reducing costs
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Embodiment 1
[0020] After drying, the corncobs are crushed to a length of about 1 cm, mixed and kneaded with a binder at a mass ratio of 1:1, and then extruded into a column shape of φ0.5 cm×1 mm. Carbonize at 500°C for 1 hour under a nitrogen atmosphere with a programmed temperature rise rate of 5°C / min. 2 CO 3 and a small amount of ethanol in an alkaline solution for 4 hours, open the mouth and dry it in a vacuum drying oven at 120°C, then put it into a closed crucible with small holes, that is, a semi-closed system, and place it in a muffle furnace under a static air atmosphere without an atmosphere. Or program the temperature in a tube furnace to 600°C for 1 hour, then continue to heat up to 800°C for 45 minutes at a rate of 5°C / min, then cool to room temperature naturally, take it out and wash with water until neutral. The activated product was soaked in diethanolamine solution for 4 hours at room temperature, dried in a vacuum oven, placed in a microwave oven, and programmed to heat...
Embodiment 2
[0022] After the tobacco rod is dried, it is crushed to a length of about 1 cm, mixed and kneaded with a binder at a mass ratio of 1.5:1, and then extruded into a column shape of φ0.5 cm×1 mm. Carbonize at 400°C for 1 hour under a nitrogen atmosphere with a programmed temperature rise rate of 5°C / min. 2 CO 3and a small amount of ethanol in an alkaline solution for 4 hours, open the mouth and dry it in a vacuum oven at 120°C, then put it into a semi-closed system as above, and heat it up to a constant temperature of 600°C in a muffle furnace or tube furnace under a static air atmosphere. After 1h, continue to heat up to 800°C for 45min at a constant temperature of 5°C / min, then cool naturally to room temperature, take it out and wash with water until neutral. The activated product was soaked in diethanolamine solution at room temperature for 4 hours, after drying, the sample was placed in a microwave oven, and the temperature was programmed to 500°C under a nitrogen atmosphere...
Embodiment 3
[0024] After the coconut shell is dried, it is crushed to a length of about 1cm, mixed with a binder at a mass ratio of 1.5:1 and kneaded, and then extruded into a column shape of φ0.5cm×1mm. Carbonize at 500°C for 1 hour under a nitrogen atmosphere, with a programmed temperature rise rate of 5°C / min. 2 CO 3 and a small amount of ethanol in an alkaline solution for 4 hours, open the mouth and dry it in a vacuum oven at 120°C, then put it into a semi-closed system as above, and heat it up to a constant temperature of 500°C in a muffle furnace or tube furnace under a static air atmosphere. After 1h, continue to heat up to 750°C for 1h at a constant temperature at a rate of 5°C / min, then cool down to room temperature naturally, take it out and wash with water until neutral. The activated product was soaked in diethanolamine solution at room temperature for 4 hours, after drying, the sample was placed in a microwave oven, and the temperature was programmed to rise to 400°C for 1 ...
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