Household garbage pyrolysis gasification method

A technology of pyrolysis gasification and domestic waste, which is applied in the direction of gasification process, chemical modification of combustible gas, and heating treatment of combustible gas, which can solve the problems of uneven distribution of pyrolyzers and large energy consumption, and achieve energy saving effect Obvious, low energy consumption, the effect of increasing production

Pending Publication Date: 2021-02-02
上海敏建环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a method for pyrolysis and gasification of domestic waste, which is used to solve the problem of large energy consumption and uneven distribution in the pyrolyzer in the prior art during the garbage granulation process. average problem

Method used

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  • Household garbage pyrolysis gasification method
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for pyrolysis and gasification of domestic waste, comprising the steps of:

[0038]Step 1. After the garbage is crushed, add it to the dryer for drying. The particle size of the garbage after crushing is 10-200mm. The temperature of the dryer is 80°C. The moisture content of the dried garbage is 15%. The steam of the dryer is sent to the first stage In the heater, the dried garbage is obtained for use;

[0039] Step 2. Transfer the dried garbage to the granulator, and transport the superheated steam in the primary heater to the granulator. The superheated steam will heat the dried garbage to 150°C and keep it for 60 minutes. The steam is sent to the secondary heater, and after cooling, the granular waste is obtained for use;

[0040] Step 3. Transfer the granular waste to the pyrolysis gasifier, and transport the steam in the secondary heater to the pyrolysis gasifier. The steam will pyrolyze the granular waste at 500°C for 60 minutes to generate heat Decompo...

Embodiment 2

[0043] A method for pyrolysis and gasification of domestic waste, comprising the steps of:

[0044] Step 1. After crushing the garbage, add it to the dryer for drying. The particle size of the garbage after crushing is 10-100mm. The temperature of the dryer is 100°C. The water content of the dried garbage is 12%. The steam of the dryer is sent to the first stage In the heater, the dried garbage is obtained for use;

[0045] Step 2. Transfer the dried garbage to the granulator, and transport the superheated steam in the primary heater to the granulator. The superheated steam will heat the dried garbage to 250°C and keep it for 35 minutes. The steam is sent to the secondary heater, and after cooling, the granular waste is obtained for use;

[0046] Step 3. Transfer the granular waste to the pyrolysis gasifier, and transport the steam in the secondary heater to the pyrolysis gasifier. The steam will pyrolyze the granular waste at 700°C for 40 minutes to generate heat Decomposin...

Embodiment 3

[0049] A method for pyrolysis and gasification of domestic waste, comprising the steps of:

[0050] Step 1. After crushing the garbage, add it to the dryer for drying. The particle size of the garbage after crushing is 10-100mm. The temperature of the dryer is 95°C. The water content of the dried garbage is 14%. The steam of the dryer is sent to the first stage In the heater, the dried garbage is obtained for use;

[0051] Step 2. Transfer the dried garbage to the granulator, and transport the superheated steam in the primary heater to the granulator. The superheated steam will heat the dried garbage to 250°C and keep it for 50 minutes. The steam is sent to the secondary heater, and after cooling, the granular waste is obtained for use;

[0052] Step 3. Transfer the granular waste to the pyrolysis gasifier, and transport the steam in the secondary heater to the pyrolysis gasifier. The steam will pyrolyze the granular waste at 700°C for 50 minutes to generate heat Decomposing...

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Abstract

The invention relates to the technical field of garbage pyrolysis treatment, in particular to a household garbage pyrolysis gasification method which comprises the following steps of: crushing garbage, drying the crushed garbage, transferring the dried garbage into a granulator, conveying steam of a dryer into a primary heater for heating to be used for heating in the granulator, cooling to obtaingranular garbage, transferring the granular garbage into a pyrolysis gasifier, conveying steam of the granulator into a second-stage heater to be heated and then used for heating in the pyrolysis gasifier, generating pyrolysis slag and pyrolysis gas, conveying the pyrolysis gas into a cooling condenser, and respectively discharging the obtained pyrolysis liquid and pyrolysis gas. According to theinvention, the problems of high energy consumption and non-uniform distribution in the pyrolyzer in the garbage granulation process in the prior art are solved, and the granulation operation cost canbe reduced by combining the granulation process with the garbage treatment process; and the garbage is granulated, so that the distribution problem of the garbage in the pyrolyzer can be solved.

Description

technical field [0001] The invention relates to the technical field of garbage pyrolysis treatment, in particular to a domestic garbage pyrolysis gasification method. Background technique [0002] With the rapid development of my country's economy and the acceleration of urbanization, the amount of municipal solid waste is increasing, causing great harm to the environment and becoming an important factor affecting human survival and sustainable development. The traditional landfill and composting treatment methods have the disadvantages of large land occupation, long treatment cycle, and serious pollution; and the waste incineration process produces harmful substances such as dioxins. [0003] Garbage pyrolysis has a high degree of volume reduction and can obtain three products: gas, liquid, and coke, which can meet different needs and gradually gain widespread favor. The traditional garbage pyrolysis method is to dehydrate domestic garbage and then crush it, then dry and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/00C10B53/07C10B57/00C10B57/10C10B49/02C10J3/60C10K3/00
CPCC10B49/02C10B53/00C10B53/07C10B57/00C10B57/10C10J3/60C10J2300/0976C10K3/006Y02P20/143
Inventor 孙敏马晓建李洪亮
Owner 上海敏建环保科技有限公司
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