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Method for preparing resin-based ball charcoal

A resin-based, pellet-based technology, applied in the field of preparing spherical phenolic-based pellets, can solve the problems of decreased volumetric yield, widened sphere diameter distribution, and high yield, and achieves narrow particle size distribution, high spheroidization rate, and large volumetric yield. Effect

Inactive Publication Date: 2008-04-09
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method omits the process of grinding and softening the solid obtained by removing the solvent, and achieves the purpose of simplifying the process and reducing the cost. The ball diameter distribution becomes wider and the volume output decreases (from 80-100g / L to 40-50g / L)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 100 g of thermoplastic phenolic resin, 120 g of absolute ethanol, and 10 g of hexamethylenetetramine were blended and dissolved in a beaker to form a homogeneous solution, and then 30 g (180 mesh-200 mesh) of phenolic resin was added for pre-curing Crush the material, stir evenly, and keep warm at 40°C for 60 minutes. The prepared material was added into an aqueous solution containing 0.5% polyvinyl alcohol, stirred at a speed of 300 rpm in a 1L reactor and heated to 140° C. at a heating rate of 1.5° C. / min. Then keep warm for 30min. Cool, filter, wash, dry at 120° C., and sieve to obtain 127 g of phenolic resin pellets, 115 g of which have a particle size of 0.3-0.7 mm.

Embodiment 2

[0018] Example 2 Blend and dissolve 100 g of thermoplastic phenolic resin, 180 g of anhydrous methanol, 10 g of hexamethylenetetramine, and 10 g of polyvinyl alcohol into a homogeneous solution in a beaker, and then add 25 g of graphite powder between 180 mesh and 200 mesh material, stir evenly, and keep warm at 40°C for 60 minutes. The prepared material was added to an aqueous solution containing 1.5% dispersant (polyvinyl alcohol + modified starch), stirred at a speed of 300 rpm in a 1L reactor and heated to 140° C. at a heating rate of 0.5° C. / min. Then keep warm for 1 hour. Cool, filter, wash, and dry to obtain 126 g of phenolic resin pellets, with a particle size of 0.4-0.6 mm accounting for 115 g.

Embodiment 3

[0019] Example 3 300g of thermoplastic phenolic resin, 250g of absolute ethanol, and 20g of hexamethylenetetramine were blended and dissolved in a beaker to form a homogeneous solution, and then 60g of activated carbon powder between 150 mesh and 200 mesh was added. Stir well and keep warm at 40°C for 60 minutes. The prepared material was added into an aqueous solution containing 0.9% sodium dodecylsulfonate, stirred at a speed of 250 rpm in a 2L reactor and heated to 140° C. at a heating rate of 3° C. / min. Then keep warm for 1 hour. Cool, filter, wash, dry at 120° C., and sieve to obtain 335 g of phenolic resin pellets, 312 g of which have a particle size of 0.8-1.3 mm.

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PUM

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Abstract

The invention relates to a preparation method of ball carbon. Linear phenolic resin, alcohol and formamine are mixed and dissolved into isotrope solution substance according to a mass ratio that is 100:40 to 180:4 to 16. The mass of the phenolic resin is used as a standard, the 100 parts of the phenolic resin is added with pretreating material, the mass of which is 15 to 30 parts, the mixed liquid which is mixed by the phenolic resin and the pretreating material is stirred and heat-preserved for 30 to 150 minutes under 40 DEG C to 60 DEG C; then the mixed liquid is added into water solution which includes 0.5 to 5wt percent of dispersant, is stirred and heated to 110 DEG C to 140 DEG C at a heating rate of 0.5 to 10 DEG C / min, is heat-preserved for 0.5 to 2 hours, and then is cooled, filtered and dried, thereby gaining a resin-covered spherule. The invention has the advantages that the method and the technology are simple, the output is large, and the controllability of the ball diameter is high. The invention is suitable for carbon spherule, the producing diameter of which is 0.3mm to 2mm.

Description

technical field [0001] The invention belongs to a method for preparing spherical phenolic-based spherical carbon. Background technique [0002] Due to the high carbonization yield of phenolic resin-based balls and the convenience of structure and property regulation, phenolic resin-based spherical carbon has become an important carbon material and has been applied in many fields. The preparation method is based on phenolic resin pellets, and then Carbon pellets with required properties are prepared by carbonization, activation or graphitization, and the key technology is the preparation of phenolic resin pellets. Yang Junbing (Patent No. CN98115717.3) etc. mixed novolac resin, curing agent, and solvent together, and then removed the solvent under reduced pressure to obtain a solid mixture of phenolic resin and curing agent. The solid mixture is broken into granules of predetermined particle size, and the granules are added into the aqueous solution of surfactant as a raw ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 李开喜谷建宇
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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