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Method performing microwave pyrolysis on garbage

A technology for pyrolysis treatment and garbage, which is applied in the field of garbage treatment and resource utilization, which can solve the problems that are not suitable for the characteristics of garbage, and achieve the effects of simplifying the microwave treatment process, ensuring safety, and increasing the concentration of combustible gases

Inactive Publication Date: 2012-07-18
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING +1
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Problems solved by technology

[0006] Although some foreign treatment methods have been introduced in recent years, they are not suitable for the garbage characteristics of "high humidity and high cabinet residue" in my country.

Method used

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Embodiment Construction

[0031] Garbage microwave cracking treatment method of the present invention is specifically as follows:

[0032] 1) Garbage pretreatment - sort the solid raw garbage first, remove metals, batteries, glass, building inorganic substances, etc., so that only organic substances such as plastics and fibers are left; kitchen waste and residues are fermented, dehydrated and crushed Get organic. The moisture content of the treated organic matter is ≤13%, the particle size is ≤100mm, and it is used as waste material for microwave cracking treatment;

[0033] Since the plastic is easy to bond when it melts, and the ability of the plastic to absorb microwaves is very low, it depends on heat transfer to raise the temperature, so the waste used for microwave cracking is preferably mixed with fiber material and plastic, and the mass ratio of fiber material and plastic is 1: 0.8~1.2.

[0034] 2) Microwave cracking of garbage--the structured garbage obtained from the pretreatment in step 1)...

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Abstract

The invention discloses a method for performing microwave pyrolysis on garbage. The method comprises the following steps of: 1) pretreating the garbage to obtain structured garbage which is suitable for microwave pyrolysis; 2) performing microwave pyrolysis on the garbage, namely introducing pyrolysis gas out of a pyrolysis gas outlet of a microwave pyrolysis device, continuously outputting pyrolysis solid products from a pyrolysis solid residue discharge port on the microwave pyrolysis device, sealing the rest parts of the microwave pyrolysis device except a garbage inlet, the pyrolysis solid residue discharge port and a pyrolysis gas outlet to prevent the pyrolysis gas from being leaked and preventing external air from entering the microwave pyrolysis device to ensure that the pyrolysis gas is used as protective gas for pyrolysis reaction; and 3) recovering pyrolysis products, namely treating according to the pyrolysis products. The method has the characteristics of rapidness and high efficiency, low energy consumption, low cost, high resource utilization rate, simplicity in operation, high garbage volume reduction rate, capacity of obviously reducing damage of garbage to environment and the like; and by the method, innocent treatment of the garbage can be realized really.

Description

technical field [0001] The invention relates to a garbage treatment technology, in particular to a treatment technology for high-temperature pyrolysis of garbage into gas, liquid and solid residues based on microwave heating, and belongs to the technical field of garbage treatment and resource utilization. [0002] Background technique [0003] With the increasing level of urbanization, municipal solid waste disposal has become a worldwide problem. There are three main ways to deal with garbage: landfill, incineration and composting. Landfill method: the biggest advantage is that the treatment cost is relatively low, and the practical value gradually decreases due to environmental pollution and occupation of a large amount of land resources; composting method: the treatment cost is low, but the composting process is difficult to control, and there is a greater risk of secondary pollution to the environment Incomplete utilization of organic matter, complex fertilizer compon...

Claims

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Application Information

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IPC IPC(8): C10B53/00B09B3/00
Inventor 颜杰李新跃杨启才杨虎王长友
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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