Comprehensive treatment method and treatment system for domestic garbage and sludge

Abstract

The comprehensive treatment method and treatment system of the domestic garbage and sludge by waste treatment of the present invention can greatly improve the utilization rate of the combustible gas by directly transporting the combustible gas generated by the pyrolysis furnace to the drying and calcining furnace for use as combustion-supporting gas At the same time, the drying calciner no longer needs to use natural gas as fuel, which greatly reduces the cost of sludge recovery; by transporting the remaining combustible gas to the steam boiler for combustion, and transporting the generated steam to the autoclave for use, The autoclave does not need to provide additional external steam, so the cost of sludge recovery can be greatly reduced. The invention realizes the organic combination of the garbage pyrolysis process and the sludge recovery process, and utilizes the waste gas and waste residues produced by the two processes to achieve the purpose of treating waste with waste, which not only meets the requirements of environmental protection, but also improves production efficiency, and has the advantages of Very high promotional value.

Description

technical field

[0001] The invention relates to the technical field of garbage and sludge treatment, in particular to a comprehensive treatment method and a treatment system for waste treatment of domestic garbage and sludge. Background technique

[0002] Pyrolysis incineration is a clean and harmless treatment technology for domestic waste, which produces less pollutants such as soot and nitrogen oxides. Household waste is pyrolyzed in the pyrolysis furnace under anoxic or even anaerobic conditions to produce flammable gases. These flammable gases need to enter the combustion chamber and be mixed with sufficient secondary combustion air for combustion. During the combustion process, a large amount of untreated Use heat efficiently.

[0003] The sludge treatment is generally carried out by burning in a drying calcination furnace first, and then processed into finished bricks through a series of processes, realizing the recycling of sludge; but the existing drying calcinatio...

Examples

Embodiment Construction

[0071] see Figure 1 to Figure 5 , a comprehensive treatment method for domestic waste and sludge in this embodiment, including the following treatment steps,

[0072] 1) Garbage pyrolysis process:

[0073] Step 1.1: put the garbage into the negative pressure crushing workshop 11, crush it three times through the crusher 111, and obtain garbage particles with a length of less than 3 cm, then sort and remove iron, and then put it into the furnace with a temperature of 1200-1250 °C Carry out pyrolysis in the pyrolysis furnace 13, and produce slag and the combustible gas that is made up of hydrogen, methane and carbon monoxide etc.;

[0074] Step 1.2: Transport the combustible gas to the steam boiler 31 equipped with a combustion chamber 311, and carry out sufficient combustion at a high temperature above 1100°C for more than 3s to generate steam and flue gas; specifically, the steam boiler 31 uses storage Thermally insulated furnace;

[0075] Step 1.3: The flue gas is subject...

technical field

[0001] The invention relates to the technical field of garbage and sludge treatment, in particular to a comprehensive treatment method and a treatment system for waste treatment of domestic garbage and sludge. Background technique

[0002] Pyrolysis incineration is a clean and harmless treatment technology for domestic waste, which produces less pollutants such as soot and nitrogen oxides. Household waste is pyrolyzed in the pyrolysis furnace under anoxic or even anaerobic conditions to produce flammable gases. These flammable gases need to enter the combustion chamber and be mixed with sufficient secondary combustion air for combustion. During the combustion process, a large amount of untreated Use heat efficiently.

[0003] The sludge treatment is generally carried out by burning in a drying calcination furnace first, and then processed into finished bricks through a series of processes, realizing the recycling of sludge; but the existing drying calcinatio...

Examples

Embodiment Construction

[0071] see Figure 1 to Figure 5 , a comprehensive treatment method for domestic waste and sludge in this embodiment, including the following treatment steps,

[0072] 1) Garbage pyrolysis process:

[0073] Step 1.1: put the garbage into the negative pressure crushing workshop 11, crush it three times through the crusher 111, and obtain garbage particles with a length of less than 3 cm, then sort and remove iron, and then put it into the furnace with a temperature of 1200-1250 °C Carry out pyrolysis in the pyrolysis furnace 13, and produce slag and the combustible gas that is made up of hydrogen, methane and carbon monoxide etc.;

[0074] Step 1.2: Transport the combustible gas to the steam boiler 31 equipped with a combustion chamber 311, and carry out sufficient combustion at a high temperature above 1100°C for more than 3s to generate steam and flue gas; specifically, the steam boiler 31 uses storage Thermally insulated furnace;

[0075] Step 1.3: The flue gas is subject...

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