Garbage thermal cracking treatment technology

A pyrolysis treatment and preheat treatment technology, applied in the removal of solid waste, etc., can solve the problems of incomplete decomposition, easy environmental pollution, large land occupation, etc., achieve reasonable design of steps and procedures, solve environmental pollution, and achieve zero emissions Effect

Active Publication Date: 2013-12-25
GAOZHOU ZHONGLIANG MACHINERY MFG
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  • Description
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AI Technical Summary

Problems solved by technology

[0002] In recent years, the country has attached great importance to environmental protection issues, and has made great progress in the prevention and control of domestic waste and sewage. However, while the output of urban waste in my country continues to increase, the development of domestic waste classification, recycling and treatment capabilities and levels is relatively lagging behind. That is, my country's domestic waste treatment technology is very weak
Usually, the main methods of dealing with municipal solid waste include landfill, incineration, and pyrolysis. These methods have different disadvantages, such as landfill, which occupies a large area of ​​land, easily pollutes the environment, and easily causes soil compaction. and underground water quality deteriorating, the incineration treatment method seriously pollutes the air and wastes a lot of recyclable resources, while the current pyrolysis treatment method of garbage does not completely decompose the garbage, and the resources are difficult to recycle and reuse
[0003] The Chinese literature with the publication number CN101798531A discloses a "garbage crushing and cracking treatment process and cracking furnace", which is completed by the following steps: (1) garbage coarse crushing; (2) garbage drying; (3) garbage iron removal; (4) garbage Secondary crushing; (5) cracking furnace treatment; (6) gas-liquid separation; (7) combustible gas reuse, wherein, in the cracking furnace treatment, the reaction temperature in the fluorescent decomposition zone is controlled to be 200~550°C, and the reaction temperature in the shielded separation zone is 100~200℃, and the reaction temperature in the catalytic cracking zone is 60~100℃. This process uses a catalyst in a specific cracking furnace to carry out catalytic cracking at low temperature. The larger the amount of garbage, the more catalysts are needed, and the existing catalysts are generally Expensive, which makes waste disposal costly and unsuitable for large-scale applications

Method used

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Examples

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Effect test

Embodiment 1

[0050] A kind of rubbish crushing and cracking treatment process of the present embodiment comprises the following steps,

[0051] (1) Coarse crushing, the garbage is sent to the first crusher for crushing, and inorganic substances such as stones, bricks and sediment are sorted out;

[0052] (2) Magnetic separation, using iron remover or magnetic separator to remove magnetic metal;

[0053] (3) Screening, using a screening device to screen the garbage treated by magnetic separation to remove sand, soil and stones with a large proportion;

[0054] (4) Fine crushing, sending the sieved garbage into the second shredder for further crushing;

[0055] (5) Drying, the finely crushed garbage is sent to the dryer for processing to obtain organic garbage; the garbage collected from urban life has a large proportion of moisture, and it needs to be dried before entering the next process to avoid moisture affecting the preheating of the garbage and cracking;

[0056] (6) Preheating tre...

Embodiment 2

[0062] The difference between the waste pyrolysis treatment process of this embodiment and that of Example 1 is that the first heating layer of the preheating treatment device includes 5 heating zones whose temperature gradually rises gradually, and the 5 heating zones work independently of each other. And the heating temperature is 250°C, 300°C, 350°C, 400°C and 450°C in sequence. The preheating zone corresponds to the five heating zones of the first heating layer to form five preheating spaces with gradient temperature rise. Harmful and toxic substances such as halogen-containing substances in organic waste materials are gradually decomposed by gradient heating in the preheating space, and the decomposition rate is high. Good sterilization effect.

[0063] The main technical solution of this embodiment is basically the same as that of Embodiment 1, and the features not explained in this embodiment are explained in Embodiment 1, and will not be repeated here.

Embodiment 3

[0065]The difference between a kind of garbage pyrolysis treatment process of this embodiment and embodiment 1 is that the second heating layer of the pyrolysis device includes 5 heating zones whose temperature gradually rises gradually, and the 5 heating zones work independently of each other and The heating temperature is 900°C, 950°C, 1000°C, 1050°C and 1100°C in sequence. The pyrolysis zone corresponds to the 5 heat-generating zones of the second heat-generating layer to form 5 pyrolysis spaces with gradient temperature rise. The organic matter in the organic waste material is gradually pyrolyzed, and the depth of organic matter pyrolysis gradually deepens as the temperature rises. The pyrolysis reaction is thorough and efficient. Generate coke coal, tar, and CH with high carbon and high combustion calorific value 4 、H 2 , CO, CO 2 , NO, NO 2 、C 2 h 4 、C 2 h 6 , NH 3 、H 2 S, HCl, SO 2 CH 4 、H 2 , CO, CO 2 、C 2 h 4 , and C 2 h 6 and other flammable gases. ...

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Abstract

The invention discloses a garbage thermal cracking treatment technology which comprises the following steps: (1) coarse crushing; (2) magnetic separation; (3) sieving; (4) fine crushing; (5) drying; (6) thermal pretreatment; (7) high temperature cracking. The garbage thermal cracking treatment technology disclosed by the invention is reasonable in design of working procedures and simple in structure, and can be used for effectively treating city household garbage and solving the problem of environmental pollution caused by the city household garbage; products, such as coke coal, tar and combustible gas, obtained from city household garbage treatment, can be collected and recycled; the garbage thermal cracking treatment technology creates new economic benefits, fully meets the requirements on reutilization, harmless treatment and reduction of garbage, and realizes zero release of garbage treatment and maximum benefit of reutilization of garbage treatment products.

Description

technical field [0001] The invention relates to the technical field of garbage cracking treatment, in particular to a garbage thermal cracking treatment process. Background technique [0002] In recent years, the country has attached great importance to environmental protection issues, and has made great progress in the prevention and control of domestic waste and sewage. However, while the output of urban waste in my country continues to increase, the development of domestic waste classification, recycling and treatment capabilities and levels is relatively lagging behind. That is, my country's domestic waste treatment technology is very weak. Usually, the main methods of dealing with municipal solid waste include landfill, incineration, and pyrolysis. These methods have different disadvantages, such as landfill, which occupies a large area of ​​land, easily pollutes the environment, and easily causes soil compaction. And groundwater quality deteriorates, the incineration t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
Inventor 黎明
Owner GAOZHOU ZHONGLIANG MACHINERY MFG
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