Porous carbon material and its preparation method
A porous carbon and raw material technology, applied in the field of porous carbon materials and their preparation, can solve the problems of low filtration accuracy, inconvenient regeneration, low transmittance, etc., achieve good transmittance, good wetting effect, and increase strength Effect
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Embodiment 1
[0025] The porous carbon material prepared by following steps:
[0026] (1) Raw petroleum coke was selected as the raw material, and ammonium chloride was used as the pore-forming agent, and the raw materials were all commercially available;
[0027] (2) Grinding and spheroidizing and grading: crush and spheroidize the raw petroleum coke with a vortex jet mill, and vibrate and sieve it into two particle sizes (-70 mesh + 100 mesh) and (-100 mesh + 160 mesh) with an ultrasonic machine powder;
[0028] (3) Ingredients: mix the spheroidized powder obtained above according to the mass percentage (-70 mesh + 100 mesh): (-100 mesh + 160 mesh) = 35:65, and add 10% chlorine according to the total weight ratio of raw materials ammonium chloride;
[0029] (4) Mixing: Put the above ingredients into a mixer and heat and mix them, and inject 25% of the total weight of the raw materials and pore-forming agent into boiled coal tar as a binder, the mixing temperature is 150°C, and the mixin...
Embodiment 2
[0035] (1) Raw pitch coke was selected as the raw material, wood powder was used as the pore-forming agent, and the raw materials were all commercially available;
[0036] (2) Grinding and spheroidizing and grading: Use a vortex jet mill to crush and spheroidize raw petroleum coke, and use ultrasonic vibration to sieve into (-100 mesh + 200 mesh) powder;
[0037] (3) Ingredients: add 5% sawdust powder to the spheroidized powder obtained above according to the total weight ratio of raw materials;
[0038] (4) Mixing: Put the above ingredients into a mixer and heat and mix them, and inject 30% of the total weight of raw materials and pore-forming agent into boiled coal tar as a binder. The mixing temperature is 140°C and the mixing time is 1.5 hours;
[0039] (5) Molding: The above-mentioned obtained material is hot-molded on a hydraulic press, and the mold temperature is 150°C;
[0040] (6) Roasting: Roast the compact obtained above in a carbon roaster at a temperature of 1100...
Embodiment 3
[0044] 1. Select metallurgical coke as raw material; use foaming agent as pore-forming agent, and the raw material is commercially available;
[0045] 2. Grinding and spheroidizing and grading; use a vortex jet mill to crush and spheroidize metallurgical coke and use an ultrasonic vibrating sieve to classify it into a particle size powder of (-40 mesh + 80 mesh);
[0046] 3. Ingredients: add 5% foaming agent to the spheroidized powder obtained above according to the total weight ratio of the raw material powder.
[0047] 4. Mixing: Add the above ingredients into a mixer and heat and mix, and inject boiled coal tar with a ratio of 35% of the total amount of raw materials and pore-forming agents as a binder, the mixing temperature is 150°C, and the mixing time is 2 hours.
[0048] 5. Molding: The material obtained above is hot-molded on a hydraulic press, and the mold temperature is 150°C
[0049]6. Roasting: Roast the green compact obtained above in a carbon baking furna...
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