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A kind of bamboo activated carbon with controllable pore size and preparation method thereof

An activated carbon and bamboo technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of strong adsorption capacity, high reaction temperature, uncontrollable pore size, etc., and achieve uniform pore size, lower reaction temperature, and effective pore size. control effect

Active Publication Date: 2019-10-22
ANHUI BOSHUO TECH
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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 method for preparing bamboo activated carbon with controllable pore size, which can solve the defects of traditional methods such as high reaction temperature, long time consumption, high energy consumption, low specific surface area, and uncontrollable pore size. Using chitosan gel and citric acid for mixing and kneading, then shearing and water vapor activation, the activated carbon has controllable pore size, high quality, high strength and strong adsorption capacity

Method used

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  • A kind of bamboo activated carbon with controllable pore size and preparation method thereof

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Embodiment 1

[0028] A bamboo activated carbon with controllable pore size and a preparation method thereof, the specific process of preparing the bamboo activated carbon is as follows:

[0029]First, add 100kg of natural bamboo chips with a moisture content of 15% to 20% into the ultra-fine bamboo powder machine, adjust the bolt of the fineness analyzer in the body to 50 mesh, and then turn on the bamboo powder machine to obtain micronization. Processed bamboo powder. Then add the fine bamboo powder and 10kg chitosan gel into the mixer, set the rotating speed as 60r / min, and the temperature as 60°C, and discharge after mixing for 3.5 hours, so that the chitosan gel is uniformly dispersed in the bamboo powder. Then together with 8kg of citric acid, set the speed of the fast blade to 42r / min, the speed of the slow blade to 35r / min, and the kneading temperature to 80°C, use citric acid to plasticize the inside of the bamboo, so that the bamboo powder has a certain plasticity; knead for 3h F...

Embodiment 2

[0032] A bamboo activated carbon with controllable pore size and a preparation method thereof, the specific process of preparing the bamboo activated carbon is as follows:

[0033] First, add 100kg of natural bamboo chips with a moisture content of 15% to 20% into the ultra-fine bamboo powder machine, adjust the bolt of the fineness analyzer in the body to 40 mesh, and then turn on the bamboo powder machine to obtain micronization. Processed bamboo powder. Then add the fine bamboo powder and 15kg chitosan gel into the kneader, set the rotating speed as 60r / min, and the temperature as 80°C, and discharge after kneading for 2.5h, so that the chitosan gel is uniformly dispersed in the bamboo powder. Then, together with 6kg of citric acid, set the speed of the fast blade to 50r / min, the speed of the slow blade to 28r / min, and the kneading temperature to 70°C, use citric acid to plasticize the inside of the bamboo, so that the bamboo powder has a certain plasticity; knead for 2h ...

Embodiment 3

[0036] A bamboo activated carbon with controllable pore size and a preparation method thereof, the specific process of preparing the bamboo activated carbon is as follows:

[0037] First, add 100kg of natural bamboo chips with a moisture content of 15% to 20% into the ultra-fine bamboo powder machine, adjust the bolt of the fineness analyzer in the body to 60 mesh, and then turn on the bamboo powder machine to obtain micronization. Processed bamboo powder. Then add the fine bamboo powder and 18kg chitosan gel into the mixer, set the rotating speed to 50r / min, and the temperature is 80°C, and discharge after mixing for 3 hours, so that the chitosan gel is evenly dispersed in the bamboo powder middle. Then together with 5kg citric acid, set the fast paddle speed to be 42r / min, the slow paddle speed to be 28r / min, and the kneading temperature to be 80°C, use citric acid to plasticize the inside of the bamboo, so that the bamboo powder has a certain plasticity; kneading 2.5 Afte...

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Abstract

The invention belongs to the technical field of bamboo activated carbon preparation and provides an aperture-controllable bamboo activated carbon and a preparation method thereof. The preparation method comprises the following steps: performing fining treatment on a bamboo material, mixing with chitosan gel, uniformly dispersing the chitosan gel in the bamboo material, further kneading with citric acid to plastifying interior of bamboo, performing continuous shearing activation on the bamboo material by using a colloid mill shearing extrusion machine at low temperature, further activating with steam at high temperature, washing with water, and drying, thereby obtaining the aperture-controllable bamboo activated carbon. By adopting the preparation method, the aperture can be controlled in the activated carbon formation process, high-quality activated carbon is made, the obtained activated carbon is high in strength and very strong in adsorption capacity.

Description

technical field [0001] The invention relates to the technical field of bamboo activated carbon preparation, in particular to a bamboo activated carbon with controllable pore size and a preparation method thereof. Background technique [0002] Activated carbon is a functional carbon material with strong adsorption capacity. It has a special microcrystalline structure, developed pores, and a large specific surface area. Therefore, it is used as an excellent adsorbent with dual characteristics of physical adsorption and chemical adsorption. The adsorption of various substances in the liquid phase and gas phase to achieve the purpose of decolorization and refining, disinfection and deodorization, decontamination and purification, has been widely used in food, beverage, medicine, water treatment, gas purification and recovery, chemical industry, smelting, agriculture and other fields. In recent years, with the continuous development of the economy and the gradual improvement of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/336C01B32/318
Inventor 陈庆曾军堂陈兵
Owner ANHUI BOSHUO TECH
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