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Preparation process for rapid dispersion granular activated carbon for liquid phase

A technology of granular activated carbon and dispersed particles, which is applied in the fields of alkali metal oxides/hydroxides, inorganic chemistry, and alkali metal compounds. Beautify the environment, improve the working environment and the use of production efficiency, the effect of low cost

Inactive Publication Date: 2017-06-13
NANPING YUANLI ACTIVE CARBON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small powder particles and light filling specific gravity, the powdered activated carbon has a large amount of dust during transportation and feeding, and the fine carbon powder particles will diffuse in the air, which will affect the working environment of the operator and cause a potential explosion hazard.
During the mixed use of powdered activated carbon with the solution, due to its hydrophobic characteristics, there is a phenomenon of floating and difficult to infiltrate, which seriously affects the actual production efficiency of users.

Method used

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  • Preparation process for rapid dispersion granular activated carbon for liquid phase
  • Preparation process for rapid dispersion granular activated carbon for liquid phase
  • Preparation process for rapid dispersion granular activated carbon for liquid phase

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Dissolve 15g-30g of one or more food-grade binders in 985g-970g of water to prepare a sol solution with a concentration of 1.5%-3.0% for later use;

[0037] Take 333g of fine powder activated carbon (over 325 mesh, moisture 10%), wet activated carbon (over 200 mesh, moisture 50%) 1400g, put the two in a kneader and mix evenly, add 667g of the prepared sol solution, and then Add a certain amount of pure water to adjust the water content of the material to 60%-75%, mix it evenly and take it out for use;

[0038] Put the mixed material in (2) into a ceramsite sand granulation pot to make a spherical shape, take it out, put it in a constant temperature drying oven, and dry it at 80°C-120°C.

[0039] There are many particles with a diameter in the range of 4mm-8mm, the dissolution and dispersion speed is less than 30s, the adsorption value of methylene blue is 7ml / 0.1g, and the caramel decolorization power of method A is 15%.

Embodiment 2

[0041](1) Prepare the sol solution according to the same method as in Example 1 for subsequent use;

[0042] (2) Take 333g of fine powder activated carbon (over 325 mesh, moisture 10%), wet activated carbon (over 200 mesh, moisture 50%) 900g, put the two in a kneader and mix evenly, add the prepared sol 500g, then add a certain amount of pure water to adjust the moisture content of the material to 60%-75%, mix it evenly and take it out for use;

[0043] (3) Put the mixed material in (2) into a ceramsite sand granulation pot to make a spherical shape, take it out, put it in a constant temperature drying oven, and dry it at 80°C-120°C.

[0044] There are many particles with a diameter in the range of 4mm-8mm, the dissolution and dispersion speed is less than 10s, the adsorption value of methylene blue is 10ml / 0.1g, and the decolorization power of method A caramel is 25%.

Embodiment 3

[0046] (1) Prepare the sol solution according to the same method as in Example 1 for subsequent use;

[0047] (2) Take 555g of fine powder activated carbon (325 mesh, moisture 10%), add 400g of the prepared sol solution, and then add a certain amount of pure water to adjust the moisture content of the material to 60%-75%, mix evenly and take it out for use;

[0048] (3) Put the mixed material in (2) into a ceramsite sand granulation pot to make a spherical shape, take it out, put it in a constant temperature drying oven, and dry it at 80°C-120°C.

[0049] There are more particles with a diameter in the range of 2mm-5mm, the dissolution and dispersion speed is less than 30s, the adsorption value of methylene blue is 14ml / 0.1g, and the decolorization power of method A caramel is 85%.

[0050] The main features of food-grade water-soluble polymer compounds are: ①It can be used as a food additive and has no toxic effect on the human body, which will determine the application field...

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Abstract

The invention discloses a preparation process for rapid dispersion granular activated carbon for a liquid phase; granular activated carbon has a characteristic of being rapidly dispersed and settled to the water bottom when placed in water or a solution, and the granular activated carbon is formed mainly by mixing and bonding a water-soluble high-molecular compound and powdered activated carbon; the water-soluble high-molecular compound is prepared from one or more of polyvinyl alcohol (PVA), chitosan, N-acetylglucosamine, cationic guar gum, sodium carboxymethyl cellulose (CMC), water soluble starch and sodium polyacrylate (ASAP). The used activated carbon and additives are all food-grade water soluble or powder insoluble additives, the additive usage amount is less, the authigenic adsorption performance of activated carbon is not affected, and the granular activated carbon can be applied to liquid phase food industry, wine, seasonings, environmental-protection purification and other industries.

Description

technical field [0001] The invention relates to the technical fields of food and environmental protection purification, in particular to a preparation process of quick-dispersion granular activated carbon for liquid phase. Background technique [0002] As a porous and efficient adsorbent, activated carbon has a wide range of uses, especially in the fields of food and condiments, and has obvious effects on decolorization, deodorization, coloring, and deep purification of food. Powdered activated carbon is widely used in industrial production due to its high specific surface area and contact area. Due to the small powder particles and light filling specific gravity, the powdered activated carbon has a large amount of dust during transportation and feeding, and the fine carbon powder particles will diffuse in the air, which will affect the working environment of the operator and cause a potential explosion hazard. During the mixed use of powdered activated carbon with the solu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30
CPCB01J20/20B01J20/28016B01J20/3042
Inventor 缪存标占礼万方世国余梁哥
Owner NANPING YUANLI ACTIVE CARBON CO LTD
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