Method for producing activated carbon by thermally activating coal tar dreg/ sludge fermentation body by using microwaves

A technology of coal tar and thermal activation, which is applied in the field of environmentally friendly activated carbon, can solve problems such as difficult solid-liquid separation, and achieve the effects of easy control, uniform heating, and simple process operation

Active Publication Date: 2012-03-21
SOUTHWEAT UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

It is a thick substance between liquid and solid, which can be transported by pump, but it is difficult to separate solid and liquid by settling

Method used

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  • Method for producing activated carbon by thermally activating coal tar dreg/ sludge fermentation body by using microwaves

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Embodiment Construction

[0023] Below is the specific embodiment of coal tar residue / sludge production gac:

[0024]

[0025] According to above-mentioned each embodiment parameter and can produce the product that reaches the object of the present invention according to following process step. Embodiments of the present invention can be practiced, and the present invention is not limited to these embodiments.

[0026] The technical solution of the present invention is: a method for preparing activated carbon by microwave heat activating coal tar residue / sludge fermentation mixture raw material, which first crushes and grinds coal tar residue to more than 200 meshes, and then mixes it with sludge Aerobic fermentation for 10-20 days, then add 0.5-4 times the mass of zinc chloride as an activator to the mixed fermenter, soak at 70-80°C for 12-24 hours, and finally place it under N 2 The charcoal is activated in a microwave carbonization furnace under protected conditions for 30-120 minutes to obtai...

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Abstract

The invention discloses a method for producing activated carbon by thermally activating a coal tar dreg/sludge mixed fermentation body by using microwaves. The method comprises the steps of: firstly crushing and grinding coal tar dreg into more than 200 meshes, then, mixing the ground coal tar dreg with sludge, and performing aerobic fermentation for 10-20 days; then, adding zinc chloride servingas an activator into the mixed fermentation body, and infiltrating for 12-24h at 70-80 DEG C, wherein the added zinc chloride is 0.5-4 times more than the mixed fermentation body in mass; and finally, carbonizing and activating for 30-120min in a microwave carbonization furnace under a N2 protection condition to obtain coal tar dreg/sludge mixed activated carbon, washing with water till a neutralcondition is achieved, and drying to obtain a product disclosed by the invention. The method disclosed by the invention has the advantages of simplicity and convenience for operation, easiness for control, low cost, high product synthesis rate and favorable product performance, and can be widely applied to industrial wastewater treatment, refractory wastewater treatment, sound insulation, noise reduction, deodorization, oil absorption, lipid suction and other industries.

Description

technical field [0001] The invention relates to a method for producing activated carbon by activating coal tar residue mixed sludge with microwave heat, and belongs to the technical field of environmentally friendly activated carbon in chemical products. Background technique [0002] Coal-based is an important raw material for the preparation of activated carbon materials due to its advantages of high carbon content and low price. There have been many examples of using the carbon resources in the preparation of activated carbon to be used in the environmental protection industry. Coal tar slag naturally has the characteristics of porous structure, large specific surface area, and contains a large amount of unburned carbon. The research on the development and utilization of coal tar slag as a resource is still in its infancy in China, especially the use of coal tar slag as a raw material for the production of activated carbon. Therefore, using the precious carbon resources i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12
Inventor 董发勤高磊李宏钟国清代群威王中琪
Owner SOUTHWEAT UNIV OF SCI & TECH
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