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Multifunctional active carbon

An activated carbon and multi-functional technology, applied in other chemical processes, chemical instruments and methods, etc., can solve the problem of insufficient decolorization of single activated carbon, and achieve the effect of decolorization and air purification, good decolorization and low cost

Inactive Publication Date: 2008-02-13
JIANGXI LUYE WOOD IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of multifunctional activated carbon, so that the multifunctional activated carbon can meet the decolorization and refining of different products, and overcome the defect of insufficient decolorization of single activated carbon

Method used

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  • Multifunctional active carbon

Examples

Experimental program
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Effect test

Embodiment 1

[0010] Embodiment 1: as shown in Fig. 1, at first sawdust is screened, removes bigger impurity in the sawdust, by the ratio of 1.00:1.00-2.50 by the weight ratio of mixed solution and sawdust, concentration is the phosphoric acid of 85% and concentration is 98 % sulfuric acid and national standard hydrogen peroxide are mixed (the ratio of the mixed solution is phosphoric acid: sulfuric acid: hydrogen peroxide=1: 0.05-0.1: 0.05-0.07), so that the Baume degree of the mixed solution is 42°, and the temperature is 60°C-80°C, Soak the sawdust in the mixed solution for 8 hours, then filter and dry the sawdust to form granules. While recovering phosphoric acid, place the cooled granulated sawdust in the furnace for carbonization. The carbonization temperature is controlled at 200°C-300°C, and the carbonization time is 2 Hours, put the carbonized sawdust in the activation furnace for activation, the activation temperature is 700°C--780°C, the activation time is 2 hours, put the activat...

Embodiment 2

[0011] Embodiment 2: First, the sawdust is screened to remove larger impurities in the sawdust. According to the weight ratio of the mixed solution and the sawdust, i.e. the ratio of 1.00:1.002.50, the phosphoric acid with a concentration of 85% and the sulfuric acid with a concentration of 98% and the national standard (the ratio of the mixed solution is phosphoric acid: sulfuric acid: hydrogen peroxide=1: 0.05-0.1: 0.05-0.07), so that the Baume degree of the mixed solution is 42 °, and the temperature is 70 ° C. Soak the wood chips with the mixed solution for 8 hours. Then filter and dry the wood chips into granules, and while recovering phosphoric acid, place the cooled granulated wood chips in the furnace for carbonization. The carbonization temperature is controlled at 250°C, and the carbonization time is 2 hours. The carbonized wood chips are placed in the activation furnace. The activated carbon is activated at 750°C and activated for 2 hours. Put the activated carbon in...

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Abstract

The present invention discloses a preparation method of a multifunctional activated carbon. The process flow is as following: (1) A wooden meal is prepared. (2) Filter (3) Dipping in a phosphoric acid. (4) Dried in the air to granules. (5) Phosphoric acid recovery. (6) Carbonization in a furnace. (7) Carbonization and activation. (8) Phosphoric acid recovery. (9) Acid-base neutralization. (10) Rinsing. (11) Dehydration (12) Drying. (13) Grinding. (14) Casing. The multifunctional activated carbon produced by the present invention can meet the decoloration and the refining requirement of different products, overcoming the disadvantage of the single function for the prior activated carbon. The method has the advantages of pollution-free production, low cost, strong adsorption, high decoloration rate, meeting the decoloration and the refining of food and medicine.

Description

technical field [0001] The invention relates to a multifunctional activated carbon, in particular to a multifunctional activated carbon and a preparation method thereof. Background technique [0002] ZL Patent No. 03131651.4 discloses a "preparation method of granular activated carbon with high decolorization performance", which is to put acid hydrolyzed lignin into Stir well in phosphoric acid, pretreat at 50°C-250°C for more than 0.5 hours, extrude into granules, harden the shaped granules at 100-200°C for more than 1 hour, and then activate at 300°C-500°C More than 30 minutes, finally, boil with water, after washing until the pH value of the activated carbon is 5-6, dehydrate and dry to form granular activated carbon with high decolorization performance. [0003] CN1511784A discloses a kind of " preparation method of large and medium-porous high-performance activated carbon ", and it is that wooden raw material is broken to certain granularity, with the phosphoric acid o...

Claims

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Application Information

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IPC IPC(8): C01B31/08B01J20/20
Inventor 蒋连松吴益传高飞阙建康吴正国
Owner JIANGXI LUYE WOOD IND
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