A kind of activation process for producing activated carbon fiber

A technology of activated carbon fiber and activated carbon fiber mat, which is applied in the field of activation process for producing activated carbon fiber, can solve the problems of reduced carbon fiber strength and reduced carbon yield, and achieve the effects of increased strength, reduced loss, and simplified process steps

Active Publication Date: 2016-07-06
苏州盛泽科技创业园发展有限公司
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AI Technical Summary

Problems solved by technology

Most of the existing technologies use water vapor as the activation medium, adding a small amount of air during activation, which can speed up the activation speed and improve the quality of mic

Method used

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Examples

Experimental program
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Embodiment Construction

[0012] The following examples further illustrate the present invention. Taking viscose fiber felt and cloth as raw materials to prepare activated carbon fiber felt and cloth as an example, the steps including the salt impregnation pretreatment process, carbonization process, and activation process are as follows:

[0013] a) Pass a proper amount of steam into the activation furnace and heat it to 200℃~450℃ as superheated steam;

[0014] b) The two ends of the activation furnace with superheated steam are continuously supplied with nitrogen, and the pressure is not less than 0.2MPa;

[0015] c) The carbonized body is continuously placed in an activation furnace passing a mixed gas of superheated steam and nitrogen, and activated at 350°C for 1 to 2 hours, and the activated carbon fiber felt and cloth are obtained after cooling out of the furnace.

[0016] The activation furnace is a horizontal continuous activation furnace with upper and lower covers, heat insulation and sealing, and is...

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Abstract

The invention discloses an activation technology for producing activated carbon fibers. The activation technology comprises the following steps: feeding a proper amount of vapor into an activation furnace, and heating to 200-450 DEG C to obtain superheated vapor; continuously introducing nitrogen into two ends of the activation furnace with the superheated vapor under the pressure of not less than 0.2Mpa; continuously putting carbonized bodies into the activation furnace with the superheated vapor and nitrogen mixed gas, performing activation under a condition of 350 DEG C for 1-2 hours, cooling and taking out the carbonized bodies to obtain activated carbon fiber felts and cloth. By virtue of the activation technology, the problems in the prior art are solved; therefore, the carbon yield and the carbon fiber intensity are improved, the technical steps are simplified, and the using amount of protection gas is reduced, so that the specific surface area of a product is enlarged, and the carbon content is increased.

Description

Technical field: [0001] The invention relates to the technical field of preparation methods of activated carbon fibers, and particularly relates to an activation process for producing activated carbon fibers. Background technique: [0002] At present, in the process of producing activated carbon fiber, the activation process is to etch the carbonized fiber with oxidizing gas at high temperature, so that the obtained activated carbon fiber has an ideal microporous structure and a higher specific surface area. The purpose is to enlarge the pore diameter of the pores formed in the carbonization stage, increase the pore volume of the product, and create new pores. The size and distribution of pores are closely related to the raw material and the carbonization stage. However, most of the prior art uses water vapor as the activation medium, and adding a small amount of air during activation can speed up the activation speed and improve the quality of the micropores; there are also CO ...

Claims

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Application Information

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IPC IPC(8): D06M11/05D06M101/40
Inventor 杨学斌杨学彦
Owner 苏州盛泽科技创业园发展有限公司
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