Process for recovering glucosamine in activated carbon

A technology of amino sugar and activated carbon in carbon, applied in amino sugar, sugar derivatives, sugar derivatives, etc., can solve the problems of wasting resources and affecting the environment, and achieve the effect of reducing electric energy, ensuring recovery quality, and ensuring recovery efficiency

Inactive Publication Date: 2012-03-28
GAOYOU MINGZENG BIOLOGICAL PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Generally, activated carbon in ammonia sugar enterprises is discarded after decolorization is completed. Because activated carbon not only has decolorization effect, but also has adsorption effect, during the decolorization process, activated carbon absorbs 3-5% of ammonia sugar; if it is directly discharged , will affect the environment and waste resources at the same time, need further improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The present invention carries out according to the following processing steps:

[0013] 1) Add activated carbon and water into the reaction kettle at a ratio of 1:3 by weight, then stir and heat up to 80°C to dissolve the ammonia sugar in the activated carbon in the water;

[0014] 2) Separating the above-mentioned treated materials through a filter press for solid-liquid separation, and separating the solid-state activated carbon from the aqueous solution containing ammonia sugar;

[0015] 3) The aqueous solution containing glucosamine is distilled under negative pressure in a reaction kettle to obtain glucosamine.

[0016] In step 3), it is recovered by first standing still for distillation, and then turning on the stirring paddle for distillation, and the time for turning on the stirring paddle is set at 1 / 2 of the total distillation time; the stirring speed of the stirring paddle changes from slow to Quickly and gradually.

[0017] In the step 3) of the present in...

Embodiment 2

[0019] The present invention carries out according to the following processing steps:

[0020] 1) Add activated carbon and water into the reaction kettle at a ratio of 1:3.5 by weight, then stir and raise the temperature to 85°C to dissolve the ammonia sugar in the activated carbon in the water;

[0021] 2) Separating the above-mentioned treated materials through a filter press for solid-liquid separation, and separating the solid-state activated carbon from the aqueous solution containing ammonia sugar;

[0022] 3) The aqueous solution containing glucosamine is distilled under negative pressure in a reaction kettle to obtain glucosamine.

[0023] In step 3), it is recovered by first standing still for distillation, and then turning on the stirring paddle for distillation, and the time for turning on the stirring paddle is set at the 3 / 4 time point of the total distillation time; the stirring speed of the stirring paddle changes from slow to Quickly and gradually.

[0024] I...

Embodiment 3

[0026] The present invention carries out according to the following processing steps:

[0027] 1) Add activated carbon and water into the reaction kettle at a ratio of 1:2.5 by weight, then stir and raise the temperature to 75°C to dissolve the ammonia sugar in the activated carbon in the water;

[0028] 2) Separating the above-mentioned treated materials through a filter press for solid-liquid separation, and separating the solid-state activated carbon from the aqueous solution containing ammonia sugar;

[0029] 3) The aqueous solution containing glucosamine is distilled under negative pressure in a reaction kettle to obtain glucosamine.

[0030] In step 3), it is recovered by first standing still for distillation, and then turning on the stirring paddle for distillation, and the time for turning on the stirring paddle is set at 2 / 3 of the total time of distillation; the stirring speed of the stirring paddle changes from slow to Quickly and gradually.

[0031] In the step 3...

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PUM

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Abstract

The invention relates to a process for recovering glucosamine in activated carbon, which comprises the following steps of: 1) adding the activated carbon and water into a reaction kettle according to a ratio of parts by weight being 1: (2.5-3.5), agitating and heating to 75-85 DEG C to enable the glucosamine in the activated carbon to be dissolved in the water; 2) conducting solid-liquid separation to the materials subject to the treatment through a filter press to separate solid activated carbon from aqueous solution containing the glucosamine; and 3) conducting negative-pressure distillation to the aqueous solution containing the glucosamine in the reaction kettle to obtain the glucosamine. By using the characteristic that the glucosamine can be easily dissolved in the water and by mixing the activated carbon containing absorbed glucosamine with the water, the glucosamine can be removed. Therefore, not only can the glucosamine be recovered, but also the activated carbon can be recycled and the economic benefit is greatly improved.

Description

technical field [0001] The invention relates to a recovery process for collecting ammonia sugar in activated carbon. Background technique [0002] Generally, activated carbon in ammonia sugar enterprises is discarded after decolorization is completed. Because activated carbon not only has decolorization effect, but also has adsorption effect, during the decolorization process, activated carbon absorbs 3-5% of ammonia sugar; if it is directly discharged , will affect the environment and waste resources at the same time, which needs further improvement. Contents of the invention [0003] In view of the above defects, the present invention aims to provide a process for recovering ammonia sugar in activated carbon that can effectively recover ammonia sugar in activated carbon. [0004] The technical scheme that the present invention adopts for this reason is: the present invention carries out by following processing steps: [0005] 1) Add activated carbon and water into the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H5/06C07H1/06
Inventor 吴梅银师林奎
Owner GAOYOU MINGZENG BIOLOGICAL PROD CO LTD
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