Preparation method for plant active carbon fibre column

A technology of plant activated carbon and plant fiber, which is applied in the field of preparation of activated carbon fiber, can solve problems such as poor spinnability and difficulty in product processing, and achieve the effects of good adsorption performance, reduced preparation cost, and large adsorption capacity

Inactive Publication Date: 2008-02-13
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the activated carbon fiber products sold in the domestic market are mainly viscose-based ACF, because the production process of the product is relatively mature, while the spinnability of polyacrylonitrile fiber (PANF) and pre-oxidized polyacrylonitrile fiber (OPANF) is poor, and the product processing is difficult. , so there are still many problems in the industrial production of PAN-ACF products

Method used

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  • Preparation method for plant active carbon fibre column

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] As shown in Figure 1, a kind of preparation method of plant activated carbon fiber post, it comprises the steps:

[0038] 1) after the natural air-drying of the plant loofah fruit after normal growth and maturity, the epidermis and loofah seeds are removed to obtain a cylindrical plant fiber column (or loofah) interwoven into a network;

[0039] 2) impregnating the cylindrical plant fiber cylinder in a chemical solvent;

[0040] Described chemical solvent is phosphoric acid (H 3 PO 4 ) solution, the mass concentration of the phosphoric acid solution is 0.1%, first heat the phosphoric acid solution with a mass concentration of 0.1% to 100°C, then immerse the cylindrical plant fiber column in the phosphoric acid solution with a mass concentration of 0.1%, and keep stirring for 10min , until there is obvious saponin foam leaching out in the solution, then, stop heating and stirring, let the cylindrical plant fiber cylinder and phosphoric acid mixture stand for 30min, tak...

Embodiment 2

[0046] A preparation method of plant activated carbon fiber column, it comprises the steps:

[0047] 1) after natural air-drying of the plant loofah fruit after normal growth and maturity, the epidermis and loofah seeds are removed to obtain a cylindrical plant fiber column interwoven in a net shape inside;

[0048] 2) impregnating the cylindrical plant fiber cylinder in a chemical solvent;

[0049] The chemical solvent is a phosphoric acid solution, the mass concentration of the phosphoric acid solution is 10%, the phosphoric acid solution with a mass concentration of 10% is heated to 150°C, and then the cylindrical plant fiber cylinder is immersed in the phosphoric acid solution with a mass concentration of 10%. , and continuously stirred for 20 minutes, until there is obvious saponin foam leaching out in the solution, then, stop heating and stirring, let the cylindrical plant fiber cylinder and phosphoric acid mixture stand for 40 minutes, take out the cylindrical plant fib...

Embodiment 3

[0055] A preparation method of plant activated carbon fiber column, it comprises the steps:

[0056] 1) after the fruit of the plant loofah after normal growth and maturity is dried, the epidermis and the seeds of the loofah are removed to obtain a cylindrical plant fiber column interwoven into a network;

[0057] 2) impregnating the cylindrical plant fiber cylinder in a chemical solvent;

[0058] The chemical solvent is a phosphoric acid solution, the mass concentration of the phosphoric acid solution is 30%, the phosphoric acid solution with a mass concentration of 30% is heated to 200°C, and then the cylindrical plant fiber cylinder is immersed in the phosphoric acid solution with a mass concentration of 30%. , and continuously stirred for 30 minutes, until there was obvious saponin foam leaching out in the solution, then, stop heating and stirring, let the cylindrical plant fiber cylinder and phosphoric acid mixture stand for 50 minutes, take out the cylindrical plant fibe...

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Abstract

The present invention concerns a preparation method of an activated carbon fiber. A preparation method of a fiber column of a plant activated carbon is characterized in that the method contains the following steps: (1) After the fruit of a plane tower gourd is dried naturally or artificially, a coat and seeds are removed and a plant fiber column can be obtained. (2) The plant fiber column is dipped into a chemical solvent which is a phosphoric acid, a zinc chloride liquor, a sodium hydroxide, or a potassium hydroxide liquor. (3) The dipped plant fiber column is dried at a temperature between 100 DEG C and 108 DEG C. (14) The dried plant fiber column is put into a carbonization and activation crucible, of which a cover is sealed by a sealing silica gel. (5) The crucible containing the plant fiber column is put into a muffle and carbonized and activated 0.1-1.0h at the temperature between 200 DEG C and 800 DEG C. (6) After the carbonization and activation are finished, the sealed crucible is taken out and cooled in a drying bison and then the product is obtained. The technology of the method is simple. The obtained fiber column of the plant activated carbon has the characteristics of good adsorption performance, large adsorption capability and lost cost.

Description

technical field [0001] The invention relates to a method for preparing activated carbon fibers, in particular to a method for preparing plant activated carbon fiber columns from plant loofah. Background technique [0002] Activated carbon fiber (ACF) is a kind of porous fibrous adsorption material. It has a large specific surface area, porous structure, and strong surface reactivity, so it has a wide range of adsorption properties and high adsorption capacity. It is widely used in water purification, decolorization, deodorization, dechlorination, solvent recovery, air purification and other environmental and resource recovery fields, and is compatible with many industries such as food, medicine, chemical industry, petroleum, mining, metallurgy, Industries such as the nuclear industry, automobiles and vacuum manufacturing are closely related. [0003] The active carbon fiber currently referred to is a porous fibrous adsorption material prepared from organic fibers through h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08B01J20/20
Inventor 夏世斌罗斌华张召基
Owner WUHAN UNIV OF TECH
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