Method for preparing activated carbon from municipal solid waste by microwave pyrolysis of solid residue

A technology for preparing activated carbon and domestic waste, which is applied in the field of waste treatment and resource utilization, which can solve problems such as pollution, the inability to realize the full recycling of waste, and waste, and achieve the effects of saving energy, reducing mining, and reducing pollution

Inactive Publication Date: 2011-12-14
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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Problems solved by technology

While these processes consume energy and time, carbon-containing components are also discarded, resulting in a certain amou

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  • Method for preparing activated carbon from municipal solid waste by microwave pyrolysis of solid residue
  • Method for preparing activated carbon from municipal solid waste by microwave pyrolysis of solid residue

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[0022] The present invention can separate and purify the carbon-containing part from the waste cracked solid residue, carry out a series of process treatments on the carbon-containing part, prepare activated carbon with adsorption function, and realize the maximum utilization of the waste cracked solid residue.

[0023] The specific process of the present invention is as follows, which can be referred to simultaneously figure 1 :

[0024] 1) First, use rubber rollers to crush the cracked solid residue (multiple rubber rollers can be installed on the conveyor belt during industrialization). The rubber rollers can crush the carbon powder without crushing sand or gravel. Glass slag and other materials to facilitate the next screening;

[0025] 2) The crushed materials are screened by a multi-stage mechanical vibrating screen, and the screened materials are reserved for later use. For each batch of different waste materials and different parameters of the cracking furnace, the size of ...

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Abstract

The invention discloses a method for preparing active carbon with solid residues from microwave pyrolysis of urban solid domestic wastes. The method comprises the steps of: rolling the pyrolyzed solid residual material with a rubber roller, removing oil from the siftage screened out and conducting drying and water removing, then in order carrying out electric separation, flotation, acid and alkali treatment and washing, and finally activation, thus obtaining the active carbon. The method of the invention can dispose wastes, reduce pollution, and also can prepare active carbon and reutilize resources reasonably and fully. As a result, exploitation of primary resources can be reduced and a great deal of energy can be saved.

Description

technical field [0001] The invention relates to a treatment technology of urban solid domestic waste, specifically refers to a method for resource utilization of solid residue obtained by microwave cracking of urban solid domestic waste to finally prepare activated carbon, and belongs to the technical field of waste treatment and resource utilization. [0002] Background technique [0003] At present, most municipal wastes are incinerated for power generation and residues are landfilled to achieve comprehensive treatment. This method has multiple benefits such as waste volume reduction, harmlessness and resource utilization. However, after garbage incineration, a large amount of waste gas or poisonous gas will be produced, especially dioxin-like pollutants, which are recognized as first-class carcinogens, and a large amount of residue will be left to be landfilled and disposed of. [0004] The treatment of municipal solid domestic waste by microwave pyrolysis is a new type...

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Application Information

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IPC IPC(8): C01B31/10B09B3/00C01B32/336
Inventor 陈建黄坤李春林李新跃颜杰
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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