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Low-temperature anaerobic carbonization method and system for household waste

A domestic waste, low temperature technology, used in special forms of dry distillation, petroleum industry, coke ovens, etc., can solve the problems of small waste disposal, short equipment life, frequent and other problems, reduce heating time, improve combustion rate, and toxic substances. reduced effect

Inactive Publication Date: 2020-02-14
赵莉莉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the traditional pyrolysis process requires external thermal energy such as plasma moment or microwave to realize the gas reforming reaction, both plasma moment and microwave equipment require additional power consumption, huge investment, short service life of equipment, complex and frequent maintenance, and high maintenance costs. , thereby affecting the promotion of the use of
[0003] There is a contradiction in the existing garbage treatment process: the treatment time of domestic garbage is not easy to control. If the time of garbage pyrolysis is long, the amount of garbage treatment will be reduced; if the time of garbage treatment is short, the garbage cannot be fully recovered. Pyrolysis cannot improve the production value of domestic waste. Therefore, how to control the pyrolysis of waste within a suitable time is a very important issue. In the prior art, the temperature at a certain point can be directly measured to reflect the pyrolysis of waste, but it cannot The temperature field of the reaction space cannot control the pyrolysis time of the garbage more accurately

Method used

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  • Low-temperature anaerobic carbonization method and system for household waste
  • Low-temperature anaerobic carbonization method and system for household waste
  • Low-temperature anaerobic carbonization method and system for household waste

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Embodiment 1

[0043] Such as figure 1 As shown, the application provides a low-temperature oxygen-free carbonization method for domestic waste, which is characterized in that it includes the following steps:

[0044] Step S1, pretreating domestic waste.

[0045] Such as figure 2 As shown, the preprocessing includes the following steps:

[0046] Step S110, sending domestic waste into a sorting tank for sorting, removing batteries, glass and stones in the domestic waste.

[0047] Put domestic garbage into the screening rotary drum, and the screening rotary drum vibrates during its rotation to screen out the smaller garbage and shake off the moisture in the garbage, such as batteries, stones, soil residue and glass pieces are screened out , What remains in the screening drum is combustible clothing, footwear and plastic waste.

[0048]Step S120, sending the sorted domestic waste into a shredder for shredding. After the domestic waste is crushed, the particle size of the material sent int...

Embodiment 2

[0109] Such as Figure 5 As shown, the present application also provides a low-temperature oxygen-free carbonization system for domestic waste, including: a pretreatment system 10 , a carbonization furnace 20 , a purification system 30 , an image acquisition system, an image data analysis system, and a carbon slag separation system 40 . The discharge port of the pretreatment system 10 communicates with the feed port of the carbonization furnace 20, the gas outlet of the carbonization furnace 20 communicates with the air inlet of the purification system 30, and the carbon slag sorting system 40 communicates with the carbonization furnace 20. The slag outlet of the furnace 20 is connected.

[0110] The pretreatment system 10 is used to pretreat domestic waste.

[0111] The pretreatment system 10 includes a screening rotary drum 11, a crusher 12, a dryer 13, a gasification chamber 14, and a screw feeder 16, and the outlet of the screening rotary drum 11 is fed by the screw feede...

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Abstract

The invention provides a low-temperature anaerobic carbonization method and system for household waste. The low-temperature anaerobic carbonization method comprises the steps: the household waste is pretreated; the pretreated household waste is put into a carbonization furnace to be subjected to pyrolysis; pyrolysis gas generated after pyrolysis of the household waste is subjected to quenching cooling treatment and then conveyed into a flue gaspurification device to be purified; and carbon residue generated at the bottom of the carbonization furnace after pyrolysis of the household waste is sortedto obtaincarbon powder, nonferrous metal recovery matters and ash residue. Pollution to the atmospheric environment is reduced, the heating time of the carbonization furnace is reasonably controlled, the pyrolysis efficiency of the household waste is improved, and the productive value of the household waste is improved.

Description

technical field [0001] The present application relates to the technical field of domestic waste treatment, in particular to a method and system for low-temperature anaerobic carbonization of domestic waste. Background technique [0002] At present, the pyrolysis method refers to the treatment method that puts the garbage in the state of no oxygen or a small amount of oxygen, and uses thermal cracking to decompose it into gas, liquid or residue. The oil and gas mixture produced by pyrolysis is usually separated by flash evaporation and condensed. To produce liquid condensed oil and non-condensable pyrolysis gas, it is usually necessary to establish a complicated condensation and distillation system. Because the traditional pyrolysis process requires external thermal energy such as plasma moment or microwave to realize the gas reforming reaction, both plasma moment and microwave equipment require additional power consumption, huge investment, short service life of equipment, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/00C10B57/00C10B57/10
CPCC10B53/00C10B57/00C10B57/10
Inventor 赵莉莉
Owner 赵莉莉
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