阅读说明：本技术 一种焚烧产生的飞灰等离子熔融减量化处理系统 (Plasma melting reduction treatment system for fly ash generated by incineration ) 是由 保嶽 葛华 徐晓晶 李亭 吴文彬 于 2020-06-04 设计创作，主要内容包括：本发明公开了一种焚烧产生的飞灰等离子熔融减量化处理系统。本发明的技术方案是：一种焚烧产生的飞灰等离子熔融减量化处理系统,包括炉体,所述炉体上设置有插入炉体内部且能够向炉体内投入等离子的等离子喷管,所述炉体的底部设置有负电极,所述负电极与等离子喷管通过电源设备连接,所述炉体内设置有滤板,所述炉体上开设有飞灰投料口,所述炉体的一侧设置有炉渣及气体排出口。本发明提供的方案从等离子喷管释放等离子气体,用产生的等离子火焰的热对焚烧飞灰进行熔融减量。(The invention discloses a plasma melting and reduction treatment system for fly ash generated by incineration. The technical scheme of the invention is as follows: the plasma melting and reduction treatment system for the fly ash generated by incineration comprises a furnace body, wherein a plasma spray pipe which is inserted into the furnace body and can throw plasma into the furnace body is arranged on the furnace body, a negative electrode is arranged at the bottom of the furnace body and is connected with the plasma spray pipe through power supply equipment, a filter plate is arranged in the furnace body, a fly ash feeding port is formed in the furnace body, and a slag and gas outlet is formed in one side of the furnace body. The scheme provided by the invention releases plasma gas from the plasma nozzle and melts and reduces the incineration fly ash by using the heat of the generated plasma flame.)

1. A fly ash plasma melting reduction treatment system that burns production which characterized in that: the furnace body is provided with a plasma spray pipe which is inserted into the furnace body and can throw plasma into the furnace body, the bottom of the furnace body is provided with a negative electrode, the negative electrode is connected with the plasma spray pipe through power supply equipment, a filter plate is arranged in the furnace body, the furnace body is provided with a fly ash feeding port, and one side of the furnace body is provided with a slag and gas outlet.

2. The plasma melting reduction treatment system for fly ash generated by incineration as claimed in claim 1, wherein: the bottom of the furnace body is provided with a granular molten slag outlet, and the discharge port comprises an exhaust port and a sand granular molten slag outlet arranged at one end of the filter plate.

3. The plasma melting reduction treatment system for fly ash generated by incineration as claimed in claim 1, wherein: the plasma spray pipe is connected with a cooling device.

4. The plasma melting reduction treatment system for fly ash generated by incineration as claimed in claim 3, wherein: the cooling device is a water cooling circulation device.

Technical Field

The invention relates to the technical field of garbage treatment, in particular to a plasma melting and reduction treatment system for fly ash generated by incineration.

Background

The incineration fly ash is generated in the incineration process of municipal domestic waste, and organic matters in the waste are mainly discharged in the form of gaseous substances in the incineration process of the waste; whereas inorganic substances form mainly solid particles. In the municipal domestic waste incineration process, the volume of the generated total ash can reach 4-5% of the total volume of the waste, the total mass of the ash can reach 15-20% of the total mass of the waste, and the quantity of the fly ash can reach 10-20% of the total mass of the ash. At present, the disposal of incineration fly ash is mainly to carry out landfill disposal in a hazardous waste landfill after being treated by utilizing an immobilization technology or a stabilization technology; or the incineration fly ash is simply treated on site and then sent to a safe landfill site for safe landfill treatment, but the construction and operation cost of the safe landfill site is extremely high, so that the garbage incineration plant is difficult to bear.

Disclosure of Invention

In view of the disadvantages of the prior art, a primary object of the present invention is to provide a system capable of effectively melting and reducing fly ash.

In order to achieve the purpose, the invention provides the following technical scheme: the plasma melting and reduction treatment system for the fly ash generated by incineration comprises a furnace body, wherein a plasma spray pipe which is inserted into the furnace body and can throw plasma into the furnace body is arranged on the furnace body, a negative electrode is arranged at the bottom of the furnace body and is connected with the plasma spray pipe through power supply equipment, a filter plate is arranged in the furnace body, a fly ash feeding port is formed in the furnace body, and a slag and gas outlet is formed in one side of the furnace body.

Preferably, the bottom of the furnace body is provided with a granular molten slag outlet, and the discharge port comprises an exhaust port and a sand granular molten slag outlet arranged at one end of the filter plate.

Preferably, a cooling device is connected to the plasma torch.

Preferably, the cooling device is a water cooling circulation device.

Compared with the prior art, the invention has the advantages that the plasma jet pipe penetrating into the furnace body from the top of the furnace body and the negative electrode arranged at the bottom of the furnace body are applied with voltage, so that the arc discharge is realized. At the same time, plasma gas is discharged from the plasma torch, and the incineration fly ash is melted by the heat of the generated plasma flame. The scheme is characterized in that: the heat conduction is excellent, and the miniaturization of the device can be realized by utilizing a high-density heat source; high-temperature melting at 1300-1550 ℃ can be realized; the burden of a landfill site is reduced after the reduction; the carrier gas such as air plasma, inert gas (N2, Ar) plasma, etc. can be selected, without electrical noise and current pulsation phenomenon, and with less exhaust gas emission.

Drawings

FIG. 1 is a schematic structural diagram of a plasma melting and reduction treatment system for fly ash generated by incineration according to the present invention.

In the figure: 1. a furnace body; 2. a plasma torch; 3. a negative electrode; 4. a power supply device; 5. filtering the plate; 6. a fly ash feeding port; 7. a slag and gas discharge port; 8. a granular molten slag outlet; 9. an exhaust gas vent; 10. a sand-like molten slag outlet; 11. a water cooling circulation device.

Detailed Description

The invention will be further explained with reference to the drawings.

As shown in fig. 1, a plasma melting and reduction treatment system for fly ash generated by incineration comprises a furnace body 1, wherein a plasma spray pipe 2 which is inserted into the furnace body 1 and can inject plasma into the furnace body 1 is arranged on the furnace body 1, a negative electrode 3 is arranged at the bottom of the furnace body 1, the negative electrode 3 is connected with the plasma spray pipe 2 through a power supply device 4, a filter plate 5 is arranged in the furnace body 1, a fly ash feeding port 6 is arranged on the furnace body 1, and a slag and gas discharge port 7 is arranged at one side of the furnace body 1.

Preferably, the bottom of the furnace body 1 is provided with a granular molten slag outlet 8, and the discharge port includes an exhaust gas port 9 and a sand granular molten slag outlet 10 provided at one end of the filter sheet 5. The molten slag can be collected in different states by providing the filter sheet 5.

Preferably, a cooling device is connected to the plasma torch 2.

Preferably, the cooling device is a water cooling circulation device 11. The cooling device adopts the water cooling circulation device 11 to cool the plasma spray pipe 2 in time, so that the stable and good operation of the plasma spray pipe 2 is kept.

A plasma nozzle 2 penetrating into the furnace body 1 from the top of the furnace body 1 and a negative electrode 3 arranged at the bottom of the furnace body 1 are applied with voltage to make the arc discharge. At the same time, plasma gas is discharged from the plasma torch 2, and the incineration fly ash is melted by the heat of the generated plasma flame. The scheme is characterized in that: the heat conduction is excellent, and the miniaturization of the device can be realized by utilizing a high-density heat source; high-temperature melting at 1300-1550 ℃ can be realized; the burden of a landfill site is reduced after the reduction; the carrier gas such as air plasma, inert gas (N2, Ar) plasma, etc. can be selected, without electrical noise and current pulsation phenomenon, and with less exhaust gas emission.

Before entering the melting equipment, the fly ash needs to be pretreated by a vibrating screen, magnetic separation, drying and the like.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.