Production of sand-grass straw activated carbon

A sand grass straw and activated carbon technology, applied in the field of activated carbon, can solve the problems of easily polluting the environment, lack of raw materials for activated carbon preparation, etc., and achieve the effects of easy availability of raw materials, green and non-toxic carbon content, and low production cost.

Inactive Publication Date: 2007-11-21
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the lack of raw materials for the preparation of activated carbon and the disadvantages of easily polluting the environment in the prior art, the present invention provides a method for preparing sand straw activated carbon. The method has little environmental pollution, can make full use of sand resources, and has a simple, economical and Environmental friendly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Preparation method of sand grass straw activated carbon, the specific steps are as follows:

[0019] The sand grass straw is washed with water, impurity removed, and dried at 120°C, and then the dried sand grass straw is crushed into 60 mesh sand grass straw scraps by a pulverizer. Put sand grass straw scraps into a carbonization furnace, and carbonize for 1 hour at a carbonization temperature of 450° C. to obtain sand grass straw carbonized scraps. Put the carbonized sand straw stalks into a fixed-bed activation furnace, and use water vapor as the activation medium at a heating rate of 18°C / min to raise the temperature to 650°C for activation, and the activation time is 60 minutes.

Embodiment 2

[0020] Example 2: Preparation method of sand grass straw activated carbon, the specific steps are as follows:

[0021] Wash the sand grass straw with water, remove impurities, and dry it at 15°C, and then pulverize the dried sand grass straw into 80 mesh sand grass straw scraps by a pulverizer. Put sand grass straw scraps into a carbonization furnace, and carbonize for 1.2 hours at a carbonization temperature of 400° C. to obtain sand grass straw carbonized scraps. Put the sand straw carbonized scraps into a fixed-bed activation furnace, and use steam as the activation medium at a heating rate of 12°C / min. The temperature is raised to 550°C for activation, and the activation time is 80 minutes.

Embodiment 3

[0022] Example 3: Preparation method of sand grass straw activated carbon, the specific steps are as follows:

[0023] The sand grass straws are washed with water, impurity removed, and dried at 90°C, and then the dried sand grass straws are crushed into 70 mesh sand grass straw scraps by a pulverizer. Put sand grass straw scraps into a carbonization furnace, and carbonize at a carbonization temperature of 350° C. for 1.5 hours to obtain sand grass straw carbonized scraps. Put the sand straw carbonized scraps into a fixed-bed activation furnace, and use steam as the activation medium at a heating rate of 15°C / min. The temperature is raised to 620°C for activation, and the activation time is 72 minutes.

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PUM

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Abstract

Production of sabadilla straw active carbon is carried out by washing sabadilla straw, crushing, carbonizing and activating. It has larger pore volume, excellent active carbon specific area and adsorptive ability.

Description

Technical field [0001] The invention relates to a preparation method of activated carbon used in the advanced treatment and purification process of wastewater, in particular to the preparation of activated carbon required in the water treatment process with straws of aquatic plants and grass. Background technique [0002] With the development of science and technology, the use of activated carbon is increasing. Activated carbon is a kind of porous carbonaceous material. Its well-developed void structure makes it have a large surface area. The strong adsorption field around the pores has a strong adsorption capacity, which can adsorb toxic gas molecules and ions in the solution. The production of traditional activated carbon often uses wood, coal, waste plastics, etc. as raw materials for the production of activated carbon. The price of raw materials is high and the preparation cost is high. While obtaining raw materials, it not only wastes natural resources, but also causes serio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08
Inventor 张建张成禄张远王月吴苏清
Owner SHANDONG UNIV
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