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Method for preparing ceramic-absorbent charcoal material

A technology of activated carbon and ceramics, which is applied in the field of preparation of ceramic-activated carbon materials, can solve the problems of decreased strength of activated carbon, blocked pores by binder, and decreased various indicators of activated carbon, so as to reduce erosion and wear, avoid damage, and overcome easy loss. powder effect

Active Publication Date: 2010-11-17
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the powdered activated carbon is added to the binder, it will cause the binder to block the pores, resulting in a decrease in the indicators of the activated carbon; under certain high-temperature and high-pressure chemical reaction conditions, the binder will decompose, resulting in the strength of the formed activated carbon. a sharp drop in

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 A thermosetting phenolic liquid resin containing an alcoholic solvent is used as the impregnating liquid, and the resin has the following technical indicators: viscosity 260 mPas (25° C.), polymerization speed 120 seconds, and solid content 58%. Dry the porous ceramic ball with a porosity of 24% at 120°C for 1 hour, put it into a container with a jacket, vacuum it for 30 minutes, and the vacuum gauge pressure is -0.08MPa, suck the thermosetting phenolic resin impregnation solution into the container, The porous ceramic balls were immersed in the immersion solution for 16 hours; the temperature of the circulating water in the jacket of the immersion vessel was 40°C. The porous ceramic ball impregnated with phenolic resin was taken out of the container, placed at room temperature for 8 hours, and then put into an oven for curing treatment, starting at 70°C, increasing the temperature by 10°C per hour, and keeping it at 150°C for 2 hours. Carry out carbonization ...

Embodiment 2

[0021] Example 2 Put the porous ceramic ball with a porosity of 50% at 120° C. into a container with a jacket after drying it for 1 hour, vacuumize it for 30 minutes, and the vacuum gauge pressure is -0.04 MPa. Same as in Example 1) into the suction container, the porous ceramic balls were immersed in the immersion solution for 16 hours; the temperature of the circulating water in the jacket of the immersion container was 30°C. Take out the porous ceramic ball impregnated with phenolic resin from the container, place it at room temperature for 12 hours, solidify the porous ceramic ball impregnated with phenolic resin, start the temperature at 70°C, increase the temperature by 10°C per hour, and keep it at 150°C 2 hours. The solidified material was heated up at 150°C in a nitrogen atmosphere, raised to 2°C per minute, then raised to 600°C for carbonization treatment for 60 minutes, and cooled to room temperature in a nitrogen atmosphere. Repeat the impregnation-curing-charring...

Embodiment 3

[0022]Example 3 The porous ceramic tube with a porosity of 34% was dried at 120° C. for 1 hour and then put into a container with a jacket, vacuumed for 30 minutes, and the vacuum gauge pressure was -0.08 MPa, and the thermosetting phenolic resin impregnation solution ( The index is the same as that in Example 1) Inhale the container, and immerse the porous ceramic tube in the immersion solution for 16 hours; the temperature of the circulating water in the jacket of the immersion container is 60°C. Take out the porous ceramic ball impregnated with phenolic resin from the container, place it at room temperature for 20 hours, solidify the porous ceramic tube impregnated with phenolic resin, start the temperature at 70°C, increase the temperature by 10°C per hour, and keep it at 150°C 2 hours. The solidified material was heated up at 150°C in a nitrogen atmosphere, raised to 2°C per minute, then raised to 800°C for carbonization for 60 minutes, and then cooled to room temperature...

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PUM

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Abstract

The present invention discloses a preparation method of ceramic-activated carbon material. The present invention includes the following processing steps: phenolic resin is confected into an impregnating solution and the resin infiltrates the porous ceramics for molding by impregnation technique; then the resin in the porous ceramics is treated by solidification, carbonization, activation and cleaning to obtain the ceramic-activated carbon material; the pore rate of the porous ceramics is 10 to 50 percent and the pore structure comprises randomly distributed pore canals with diameter of 10 to 1,000Mum; the pore structure of the activated carbon in the pore consists of a macro-pore, a meso-pore and a micro-pore; the content of the activated carbon accounts for 1 to 15 percent of the total quality and the specific surface area of the activated carbon is 600 to 1,400m<2> / g. The molded ceramic-activated carbon material with high intensity and stable maintenance of various indexes prepared by the present invention fully satisfies the mass transfer requirement between fluid medium and the activated carbon, effectively plays the functions of the activated carbon material and overcomes thephenomenon that powder easily falls from the surface of the activated carbon.

Description

technical field [0001] The invention relates to a preparation method of a ceramic-activated carbon material, in particular to a preparation method of shaped activated carbon with relatively high strength. Background technique [0002] Due to its high specific surface area, developed pore structure and surface structure of certain functional groups, activated carbon has strong adsorption capacity for gases, organic or inorganic substances in solution and colloidal particles, etc., and has good chemical stability, Acid resistance, alkali resistance and heat resistance and other properties. Activated carbon is widely used as adsorption and separation materials, catalytic materials, and bioengineering materials in the fields of industry, agriculture, military, and medicine. Activated carbon used in fixed beds requires high strength and a certain shape to reduce pressure drop in order to fully function as an activated carbon material. The strength of ordinary activated carbon i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30
Inventor 刘卫民胡以强涂善东
Owner EAST CHINA UNIV OF SCI & TECH
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