Adhesive prepared from paper making black liquor for forming active carbon

A technology of papermaking black liquor and activated carbon, which is applied in the direction of binder type, starch binder, asphalt binder, etc. Effect

Active Publication Date: 2007-12-26
邹炎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to provide a special binder for shaped activated carbon prepared mainly from straw pulp and papermaking black liquor, which can not only solve the problem of serious air pollution by using coal tar as a binder, but also effectively Utilize straw pulp papermaking black liquor to turn waste into treasure and greatly reduce pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A binder for activated carbon molding prepared from papermaking black liquor, comprising the following components by weight percentage:

[0035] Black Liquor Concentrate 55%

[0036] Phenolic resin 20%

[0037] Starch 8%

[0038] Furfural residue 15%

[0039] Surfactant 2%;

[0040] The preparation method is as follows: ①Heating, evaporating and concentrating the black liquor until the solid content is greater than 20%, and keeping the temperature at 80-90°C; ②Heating the phenolic resin to 80-90°C for standby; ③The above ingredients are prepared according to the stated ratio in Mix at 60-100°C, stir evenly, add the rest of the ingredients slowly during this period, stir while adding, control the addition time at 1-1.5 hours, and react for 2-2.5 hours.

Embodiment 2

[0042] A binder for activated carbon molding prepared from papermaking black liquor, comprising the following components by weight percentage:

[0043] Black Liquor Concentrate 60%

[0044] Furfural resin 15%

[0045] Starch 10%

[0046] Cassava residue 10%

[0047] Surfactant 5%;

[0048] The preparation method is as follows: ①Heating, evaporating and concentrating the black liquor until the solid content is greater than 20%, and keeping the temperature at 80-90°C; ②Heating the furfural resin to 80-90°C for standby; Mix at 60-100°C, stir evenly, slowly add the rest of the ingredients during this period, stir while adding, control the feeding time at 1.5-2 hours, and react for 2.5-3 hours.

Embodiment 3

[0050] A binder for activated carbon molding prepared from papermaking black liquor, comprising the following components by weight percentage:

[0051] Black Liquor Concentrate 65%

[0052] Bitumen and coal tar mixture (bitumen: coal tar = 2:8) 15%

[0053] Starch 7%

[0054] Furfural residue 10%

[0055] Surfactant 3%;

[0056] The preparation method is as follows: ①Concentrate the black liquor by heating, evaporating and concentrating until the solid content is greater than 20%, and keep the temperature at 80-90°C; ②Stir the pitch and coal tar evenly at 80-90°C according to the ratio; The above-mentioned ratio is mixed at 60-100°C, and stirred evenly. During this period, the remaining ingredients are slowly added, and stirred while adding. The addition time is controlled at 2-2.5 hours, and the reaction is 3-3.5 hours.

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PUM

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Abstract

This invention discloses an adhesive prepared from papermaking black liquor for activated carbon shaping. The adhesive comprises: black liquor concentrate 55-70 wt.%, adhesive material 10-20 wt.%, starch 5-10 wt.%, plant waste residue 10-20 wt.%, and surfactant 2-5 wt.%. The adhesive can substitute for the present adhesive made from coal tar, and can produce activated carbon product with adjustable frame porosity, abundant surface functional groups, high adsorption ability and high quality. The activated carbon product is suitable for advanced water treatment and deep-processing decolorization in food and fine chemical industries, and has such advantages as rapid adsorption, rapid decolorization and wide applications.

Description

technical field [0001] The invention relates to an adhesive, in particular to an adhesive for forming activated carbon prepared from papermaking black liquor. Background technique [0002] At present, the commonly used process methods for activated carbon molding and manufacturing are: pulverized coal - adding binder (coal tar) kneading (20 minutes) - layering molding - cold strips for 24 hours - carbonization (the temperature at the end of the furnace is about 450 ° C, the speed is 45 rpm / minute or so)-activation (45 minutes)-post-treatment; Wherein need to use binder, and existing about 90% shaped activated carbon, such as columnar activated carbon, binder all is the coal tar that adopts, and its manufacture process The air pollution is serious, the tail gas must be incinerated and the cost is high; while the straw pulp papermaking black liquor discharge is the largest source of water pollution in my country, and the pollution control of black liquor has been a big problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J195/00C09J161/00C01B31/14C09J103/02C01B32/384
Inventor 邹炎
Owner 邹炎
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