CN215062093U - Coupling plasma melting furnace treatment device for household garbage incineration - Google Patents

Coupling plasma melting furnace treatment device for household garbage incineration Download PDF

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Publication number
CN215062093U
CN215062093U CN202120320408.2U CN202120320408U CN215062093U CN 215062093 U CN215062093 U CN 215062093U CN 202120320408 U CN202120320408 U CN 202120320408U CN 215062093 U CN215062093 U CN 215062093U
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pipeline
melting furnace
plasma melting
cyclone separator
furnace
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CN202120320408.2U
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陶应翔
王山
孙毅晨
吴忠勇
王卫民
雷仲波
谢庚
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Chongqing New Ion Environmental Technology Co ltd
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Chongqing New Ion Environmental Technology Co ltd
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Abstract

The utility model discloses a coupling plasma melting furnace treatment device for household garbage incineration, which comprises a grate furnace garbage incineration system, wherein the grate furnace garbage incineration system is connected with a cyclone separator through a pipeline, a storage bin is arranged below the cyclone separator, and a discharge port at the bottom of the cyclone separator is communicated with a feed inlet of the storage bin through a pipeline; the side wall of the bin is connected with a diaphragm pump through a pipeline, the diaphragm pump is also connected with a plasma melting furnace through a pipeline, and the plasma melting furnace is connected with a secondary combustion chamber through a pipeline; the top outlet of the cyclone separator is also connected with the inlet of the second combustion chamber through a pipeline; a hopper is arranged above the plasma melting furnace and is connected with a feed inlet of the plasma melting furnace through a pipeline. The device reduces NOx in the plasma melting furnace by using a small amount of unburnt gas and particulate matters in the waste incineration furnace, and the secondary combustion chamber does not need additional fuel.

Description

Coupling plasma melting furnace treatment device for household garbage incineration
Technical Field
The utility model belongs to the technical field of domestic waste incineration equipment, concretely relates to domestic waste burns with coupling plasma melting furnace processing apparatus.
Background
3-5% waste incineration fly ash can be produced in the incineration process of the waste incineration grate furnace, and the heavy metal and dioxin in the waste incineration fly ash are higher in content and belong to dangerous waste. In the prior art, cement solidification, melting solidification, chemical agent solidification and the like are mainly utilized, and the solidified fly ash can be buried according to common wastes after meeting the burying requirements.
The fly ash is heated by the plasma melting furnace by utilizing high-temperature plasma of 4000-5000 ℃ generated by the plasma torch, the fly ash can be rapidly melted into liquid, and dioxin is completely decomposed. The liquid fly ash is quenched by extremely cold water to form a vitreous body, and heavy metals are solidified in the crystal lattice of the vitreous body. The fly ash is formed by partial combustible gas such as CO, the partial combustible gas needs to be burnt out in a second combustion chamber, and the second combustion chamber needs fuel for combustion supporting.
The plasma torch generates a large amount of NOx at high temperature, and the NOx in the smoke of a melting furnace of the plasma torch using air as a medium is 20000mg/m3Left and right, resulting in the flue gas not being easily treated. The second combustion chamber needs a certain amount of fuel, the fuel is unevenly combusted, harmful gas can be generated, and a certain amount of fuel is neededStorage facilities and costs. In response to these disadvantages, the present invention is directed to reducing NOx in a plasma melting furnace using a small amount of unburned gas and particulate matter in a waste incinerator, and a secondary combustion chamber that also does not require additional fuel.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a domestic waste burns with coupling plasma melting furnace processing apparatus reduces the NOx in the plasma melting furnace through using a small amount of gas that is not burnt out in the waste incinerator and particulate matter, and the second combustion chamber also need not extra fuel.
The utility model adopts the technical proposal that a coupling plasma melting furnace treatment device for the incineration of household garbage comprises a grate furnace garbage incineration system, wherein the grate furnace garbage incineration system is connected with a cyclone separator through a pipeline, a material bin is arranged below the cyclone separator, and a discharge port at the bottom of the cyclone separator is communicated with a material bin feed inlet through a pipeline; the side wall of the bin is connected with a diaphragm pump through a pipeline, the diaphragm pump is also connected with a plasma melting furnace through a pipeline, and the plasma melting furnace is connected with a secondary combustion chamber through a pipeline; the top outlet of the cyclone separator is also connected with the inlet of the second combustion chamber through a pipeline; a hopper is arranged above the plasma melting furnace and is connected with a feed inlet of the plasma melting furnace through a pipeline.
The utility model is also characterized in that,
the grate furnace garbage incineration system comprises a chimney, a dust remover, a desulfurizing tower and a garbage incinerator which are sequentially connected, wherein a discharge port of the garbage incinerator is connected with a feed port of a cyclone separator through a pipeline.
The side wall of the storage bin is also connected with a pipeline for introducing nitrogen.
The dust remover is a bag-type dust remover.
A trolley is also arranged below the plasma melting furnace.
The utility model is also characterized in that,
the additives in the step 2 are: quartz sand or cullet; the mass ratio of the fly ash to the additive is as follows: 1: 0.3-0.5.
The utility model has the advantages that: the utility model relates to a domestic waste burns and uses coupling plasma melting furnace processing apparatus, a small amount of through extraction waste incinerator unburnt gas and particulate matter, the gas is used for the combustion-supporting of second combustion chamber that plasma melting furnace flue gas was handled, and the particulate matter is used for reducing the NOx production volume in the plasma melting furnace.
Drawings
FIG. 1 is a schematic structural view of a coupled plasma melting furnace treatment device for burning household garbage according to the present invention;
FIG. 2 is a flow chart of the treatment method of the coupled plasma melting furnace for burning the household garbage.
In the figure, 1, a chimney, 2, a dust remover, 3, a desulfurizing tower, 4, a garbage incinerator, 5, a cyclone separator, 6 bins, 7, a diaphragm pump, 8, a hopper, 9, a plasma melting furnace, 10, a secondary combustion chamber and 11, a trolley.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a coupling plasma melting furnace treatment device for household garbage incineration, which comprises a grate furnace garbage incineration system, wherein the grate furnace garbage incineration system is connected with a cyclone separator 5 through a pipeline, a material bin 6 is arranged below the cyclone separator 5, and a discharge port at the bottom of the cyclone separator 5 is communicated with a feed inlet of the material bin 6 through a pipeline; the side wall of the stock bin 6 is connected with a diaphragm pump 7 through a pipeline, the diaphragm pump 7 is also connected with a plasma melting furnace 9 through a pipeline, and the plasma melting furnace 9 is connected with a secondary combustion chamber 10 through a pipeline; the top outlet of the cyclone separator 5 is also connected with the inlet of the second combustion chamber 10 through a pipeline; a hopper 8 is arranged above the plasma melting furnace 9, and the hopper 8 is connected with a feed inlet of the plasma melting furnace 9 through a pipeline.
The grate furnace garbage incineration system comprises a chimney 1, a dust remover 2, a desulfurizing tower 3 and a garbage incinerator 4 which are sequentially connected, wherein a discharge port of the garbage incinerator 4 is connected with a feed inlet of a cyclone separator 5 through a pipeline.
The side wall of the bin 6 is also connected with a pipeline for introducing nitrogen.
The dust remover 2 is a bag-type dust remover.
A trolley 11 is also arranged below the plasma melting furnace 9, and the trolley 11 is used for transporting the glass body discharged from the plasma melting furnace 9.
The utility model also provides a domestic waste burns and uses coupling plasma melting furnace processing method, adopts foretell device, as shown in figure 2, concrete step is as follows:
step 1, crushing garbage and putting the crushed garbage into a garbage incinerator 4, treating flue gas by a desulfurizing tower 3 and a dust remover 2 in sequence, and generating fly ash at the bottoms of the desulfurizing tower 3 and the dust remover 2;
step 2, putting the generated fly ash and a certain amount of cosolvent into a hopper 8, uniformly mixing, putting large particles accumulated at the bottom of a secondary combustion chamber 10 into the hopper 8, and treating gas at an outlet of the secondary combustion chamber 10 in a flue gas treatment system; the flue gas treatment system consists of a heat exchanger, a denitration SNCR, a dust remover, a deacidification tower and a chimney, and is a universal device, the tail end of a secondary combustion chamber is connected with the heat exchanger, the connecting tail end of the heat exchanger is connected with the denitration SNCR, the tail end of the denitration SNCR is connected with the dust remover, the tail end of the dust remover is connected with the deacidification tower, and the tail end of the deacidification tower is connected with the chimney;
step 3, extracting smoke accounting for 3-5% of the mass of the input garbage from the middle part of the garbage incinerator 4, separating by the cyclone separator 5, feeding the combustible gas with light mass into the secondary combustion chamber 10 from the top of the cyclone separator 5 through a pipeline, feeding the combustible particulate matters with heavy mass and part of the combustible gas into the storage bin 6, feeding nitrogen into the lower part of the storage bin 6, feeding the nitrogen into the plasma melting furnace 9 with the combustible particulate matters and the combustible gas under the action of the diaphragm pump 7, and enabling NOx generated by the plasma torch to be 20000mg/m under a standard condition3Reduced to 400mg/m3Left and right.
And 4, melting the fly ash in the plasma melting furnace 9, quenching the melted fly ash by water to form a glass body, conveying the glass body away by the trolley 11, volatilizing low-melting-point substances in the fly ash, entering the secondary combustion chamber 10, mixing and burning the low-melting-point substances with combustible gas separated from the top of the cyclone separator 5, removing harmful substances such as CO and the like, and enabling the secondary combustion chamber 10 not to need fuel for combustion supporting.
The additives in the step 2 are: quartz sand or cullet; the mass ratio of the fly ash to the additive is as follows: 1: 0.3-0.5.

Claims (5)

1. A coupled plasma melting furnace treatment device for household garbage incineration is characterized by comprising a grate furnace garbage incineration system, wherein the grate furnace garbage incineration system is connected with a cyclone separator (5) through a pipeline, a storage bin (6) is arranged below the cyclone separator (5), and a discharge port at the bottom of the cyclone separator (5) is communicated with a feed inlet of the storage bin (6) through a pipeline; the side wall of the bin (6) is connected with a diaphragm pump (7) through a pipeline, the diaphragm pump (7) is also connected with a plasma melting furnace (9) through a pipeline, and the plasma melting furnace (9) is connected with a secondary combustion chamber (10) through a pipeline; the top outlet of the cyclone separator (5) is also connected with the inlet of the second combustion chamber (10) through a pipeline; a hopper (8) is arranged above the plasma melting furnace (9), and the hopper (8) is connected with a feed inlet of the plasma melting furnace (9) through a pipeline.
2. The coupled plasma melting furnace treatment device for the incineration of household garbage according to claim 1, wherein the grate furnace garbage incineration system comprises a chimney (1), a dust remover (2), a desulfurizing tower (3) and a garbage incinerator (4) which are connected in sequence, and a discharge port of the garbage incinerator (4) is connected with a feed port of the cyclone separator (5) through a pipeline.
3. The coupled plasma melting furnace treatment device for the incineration of household garbage according to claim 2, characterized in that a nitrogen pipeline is further connected to the side wall of the storage bin (6).
4. The coupled plasma melting furnace treatment device for the incineration of household garbage according to claim 2, wherein the dust remover (2) is a bag-type dust remover.
5. The coupled plasma smelting furnace treatment device for the incineration of the household garbage according to the claim 2, characterized in that a trolley (11) is arranged below the plasma smelting furnace (9).
CN202120320408.2U 2021-02-04 2021-02-04 Coupling plasma melting furnace treatment device for household garbage incineration Active CN215062093U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120320408.2U CN215062093U (en) 2021-02-04 2021-02-04 Coupling plasma melting furnace treatment device for household garbage incineration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120320408.2U CN215062093U (en) 2021-02-04 2021-02-04 Coupling plasma melting furnace treatment device for household garbage incineration

Publications (1)

Publication Number Publication Date
CN215062093U true CN215062093U (en) 2021-12-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120320408.2U Active CN215062093U (en) 2021-02-04 2021-02-04 Coupling plasma melting furnace treatment device for household garbage incineration

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CN (1) CN215062093U (en)

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