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

Inactive Publication Date: 2012-04-18
ZIGONG YUXING CARBON PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the porous carbon filter material manufactured by traditional methods has low transmittance and low filtration accuracy during the purification process, and is easy to block, inconvenient to regenerate, and easy to fail.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a porous carbon material and its preparation method. The preparation method provided by the invention successively comprises steps of: raw material and auxiliary material selection, pulverization, spheroidization, grading, burdening, mixing, molding, roasting and the like. Green petroleum coke and green pitch coke are creatively used as raw materials. A filtration materialprepared after spheroidization of a green coke powder has large contractility, high strength, uniform pore distribution, smooth pore path, high filtration precision and good transmissivity, is not easy to block during the purification process, is easy to regenerate, and has long service life. The porous carbon material prepared in the invention can be widely used as a filtration material, a thermal insulation material, a conductance electrode and the like.

Description

technical field [0001] The invention relates to a novel material, in particular to a porous carbon material and a preparation method thereof. Background technique [0002] At present, the porous materials used to purify liquids and gases are mostly ceramic materials, metal and alloy materials, polymer materials and fiber materials. Some of these materials are corrosion resistant but not high temperature resistant, and some are high temperature resistant but not corrosion resistant. High-risk substances, heavy metals, precious metals, coal gasification, and environmental protection all need a purification material that can withstand high temperature and corrosion, has good transmittance, high filtration accuracy, and is easy to clean. Due to the chemical stability, high temperature resistance and corrosion resistance of carbon, the filtration requirements can be met by controlling the pore formation. However, porous carbon filter materials manufactured by traditional method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 袁援张玉桃张宜国王富光
Owner ZIGONG YUXING CARBON PRODS
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