TWI685386B - Waste vitrification treatment method and equipment using cycle and plasma - Google Patents

Abstract

A waste vitrification treatment method using cycle and plasma includes a configuration step, a shaping step, a melting step, and a solidification step. The configuration step is to mix the waste with the material containing silicon aluminum to form a mixture. The setting step is to set the mixture into a certain shape. The melting step is to sequentially use the heat generated by the cycle and the plasma to melt the shaped object into a fluid, and decompose or vaporize the organic matter in the shaped object. The solidification step is to cool and vitrify the fluid. The invention also provides a waste vitrification treatment device using a cycle and a plasma, which includes a shaping device, a melting device including a horizontal cycle furnace and a plasma furnace, and a solidification device. The waste vitrification treatment method and equipment using the wave and plasma can make the treated waste have better quality and purity.

Description

Waste vitrification treatment method and equipment using cycle and plasma

The invention relates to a treatment method and treatment equipment, in particular to a waste vitrification treatment method using frequency and plasma and a waste vitrification treatment equipment using frequency and plasma.

General business wastes, such as harmful ash and toxic wastes after heat treatment and incineration, are often disposed of by solidification and burial methods because they have no reuse value. However, the solidification method has the problem of poor long-term stability of the solidified waste, and the landfill method has the problems of high land burial cost, difficult site search, waste of land resources, and secondary pollution to the environment. Therefore, it is necessary to find other methods of waste disposal.

Taiwan Patent Announcement No. I312703 discloses an incinerator fly ash feeding device that can automate continuous feeding operations and can completely leave fly ash in the melting furnace. The incinerator fly ash feed device includes an ingot unit for granulating the fly ash into ash ingots, and a control unit for controlling the ingot unit. Further, the ash ingot is sent to a plasma furnace for melting.

Although the patent case discloses how to deal with incinerator fly ash methods and equipment, but because the heating method of the plasma furnace is heated by the center, and the closer to the furnace wall, the lower the temperature, there is a problem of uneven heating temperature Therefore, the quality of the treated fly ash obtained using the method and equipment of the patent case is uneven, so that there is a problem of low safety and low efficiency in subsequent use.

Therefore, an object of the present invention is to provide a method for vitrification of wastes by using a wave and plasma.

Therefore, the method for waste vitrification using plasma and plasma in the present invention includes: a disposition step, a shaping step, a melting step, and a solidification step. The configuration step is to mix the waste with the material containing silicon aluminum to form a mixture. The setting step is to set the mixture into a certain shape. The melting step is to sequentially use the heat generated by the cycle and the plasma to melt the shaped object into a fluid and decompose or vaporize the organic matter in the shaped object. Provided, and the peripheral heater includes a high-temperature resistant tube defining a heating space through which the shaped object passes, and a peripheral coil wound around the outer surface of the high-temperature resistant tube. The solidification step is to cool and vitrify the fluid.

Another object of the present invention is to provide a waste vitrification treatment equipment that utilizes frequency and plasma.

The waste vitrification treatment equipment using the cycle and the plasma of the present invention includes: a shaping device, a melting device, and a solidification device. The shaping device is used to shape a mixture into a certain shape, wherein the mixture contains waste and materials containing silicon aluminum. The melting device is used to melt the shaped material into a flowing material and decompose or vaporize the organic matter in the shaped material, and includes a horizontal peripheral furnace located downstream of the shaped device and a horizontal peripheral furnace located in the horizontal Plasma furnace downstream of the furnace, wherein the horizontal perimeter furnace includes a perimeter heater, and the perimeter heater includes a high temperature resistant tube defining a heating space through which the shaped object passes, and a high temperature resistant winding Perimeter coil on the outer surface of the tube. The solidification device is located downstream of the melting device and is used to cool and vitrify the flow.

The effect of the present invention is: compared with the weight, volume, stability, pollution, quality and purity of untreated waste, through the method and equipment for waste vitrification treatment using the wave and plasma of the present invention, it can make The processed waste becomes lighter in weight and smaller in volume, and at the same time has the characteristics of high stability, low pollution, high quality and high purity. Therefore, the method and equipment for waste vitrification treatment using frequency and plasma in the present invention have The effects of reduction, volume reduction and safety can be used as the current final disposal method for waste disposal in the environmental protection technology industry. Furthermore, the method and equipment for waste vitrification treatment using frequency and plasma of the present invention can simultaneously process waste and silicon-aluminum-containing materials, and can continuously process waste and silicon-aluminum-containing materials.

An embodiment of a waste vitrification treatment method using frequency and plasma of the present invention includes a configuration step, a shaping step after the configuration step, a melting step after the shaping step, and a melting step in the melting step After the coagulation step.

In this configuration step, the waste and the material containing silicon aluminum are mixed into a mixture. The waste can be used alone or in combination, and the waste such as but not limited to ash or sludge. The sludge is, for example but not limited to, water-containing sludge. The water-containing sludge is derived from, for example, water-containing sludge generated in the manufacturing industry or water-containing sludge generated in the electroplating industry. When the waste is wet sludge, it needs to be dried and shredded. The crushing treatment is used to crush the agglomerates or lumps formed due to the tangled situation of the sticky substances or fibers in the wet sludge. In this embodiment, the waste is harmful dust-collecting fly ash from the printing and dyeing industry and harmful sludge from the electroplating industry. The silicon-aluminum-containing material is, for example but not limited to, silicon-aluminum-containing glass frit. In this embodiment, the silicon-aluminum-containing material is derived from silicon-aluminum-containing waste silica generated after the fab cuts the wafer. The amount of the waste and the material containing silicon aluminum is adjusted according to the application requirements of the treated waste. The mixing is performed using a mixing device. The mixing device is, for example but not limited to, a closed stirring tank.

In the shaping step, the mixture is shaped into a certain shape. Through the shaping step, it is possible to avoid the situation where the mixture is directly tangled when the melting step is performed, which in turn affects the quality of the melting process. The setting is performed using a certain type of device. The sizing device is, for example but not limited to, an ingot press. The shape of the shaped object is not particularly limited, and may be granular, lump, or powder.

In this melting step, the heat generated by the cycle is first used to heat the shaped object for the first time, and then the heat generated by the plasma is used for the second heat treatment to melt the shaped object into a flowing material and make the shaped object The organic matter in the matter is decomposed or gasified to achieve the effect of reduction and volume reduction. The organic substance is, for example, dioxin. In addition, there are inorganic substances in addition to organic substances in the stereotypes. The inorganic substance is, for example, non-metallic substance, heavy metal, or metal other than heavy metal. In the melting step, the heavy metal or metals other than the heavy metal in the inorganic substance are converted into a stabilized substance due to a reaction by heat to achieve a stability effect. At the same time, through the silicon-aluminum-containing material, the heavy metals or harmful substances are confined in the flowing substance without being dissolved out, and a safety effect is achieved. In this embodiment, the temperature of the heat generated by the cycle is about 1800°C, and the temperature of the heat generated by the plasma is about 1800-1350°C.

In the solidification step, the fluid is introduced into water to cool the fluid, and the fluid will burst into small glass-like particles due to thermal expansion and contraction. In the solidification step, in addition to cooling and vitrification of the fluid, the water and the fluid exchange heat, which causes the water to be converted into water vapor.

The waste vitrification treatment method using the cycle and plasma of the present invention further includes a condensation step after the solidification step, and a recovery step after the condensation step. In this condensation step, the water vapor is condensed into water. The condensation is performed using a heat exchanger. In the recovery step, the water obtained in the condensation step is recovered and used as water for cooling the flowing material in the solidification step, so that the water obtained in the condensation step can be recycled.

The treated waste obtained through the waste vitrification treatment method using weekly and plasma according to the present invention can be used to replace natural sand and gravel in construction materials. In the case where the amount of natural sand and gravel is limited, the treated waste of the present invention can be used continuously and has market promotion.

Referring to FIGS. 1 and 2, an embodiment of a waste vitrification treatment device using weekly and plasma according to the present invention includes a first storage tank 1, a second storage tank 2, and a third storage tank 3 1. A crushing and drying device 4 located downstream of the second storage tank 2, a mixing device located downstream of the crushing and drying device 4, the first storage tank 1 and the third storage tank 3 5. A storage tank 6 located downstream of the mixing device 5, a sizing device 7 located downstream of the storage tank 6, a melting device 8 located downstream of the sizing device 7, one located at the A solidification device 9 downstream of the melting device 8, a conveying device 10, and a control device 11. The conveying device 10 includes a first conveying unit 101, a second conveying unit 102, a third conveying unit 103, and a fourth conveying unit 104. The waste is, for example but not limited to, ash or sludge. The silicon-aluminum-containing material is, for example but not limited to, silicon-aluminum-containing glass frit. In this embodiment, the waste is harmful dust collection fly ash or harmful sludge. The silicon-aluminum-containing material is from silicon-aluminum-containing waste silica generated after the fab cuts the wafer.

The first storage tank 1, the second storage tank 2 and the third storage tank 3 are respectively used to store harmful dust-collecting fly ash, harmful sludge, and waste silica containing silicon aluminum. The crushing and drying device 4 is used to dry and crush the harmful sludge to avoid entanglement. The first conveying unit 101 of the conveying device 10 is located downstream of the crushing and drying device 4 and is used to convey the dried and crushed harmful sludge to the mixing device 5. The first conveying unit 101 is, for example but not limited to, a screw conveyor. The second conveying unit 102 and the third conveying unit 103 of the conveying device 10 are located downstream of the first storage tank 1 and downstream of the third storage tank 3, respectively, and are used to fly away the harmful dust The ash and the waste silica containing silicon aluminum are sent to the mixing device 5. The second conveyor unit 102 and the third conveyor unit 103 are, for example but not limited to, vacuum conveyors.

The mixing device 5 is used to mix the harmful dust-collecting fly ash, the harmful sludge and the waste silica containing silicon aluminum into a mixture. The mixing device 5 is for example but not limited to a mixer. The fourth conveying unit 104 of the conveying device 10 is located downstream of the mixing device 5 and is used to convey the mixture into the storage tank 6. The fourth conveying unit 104 is, for example but not limited to, a vacuum conveyor.

The mixture is released from the storage tank 6 into the sizing device 7. The shaping device 7 is used to shape the mixture into a certain shape. The sizing device 7 is, for example but not limited to, an ingot press.

The shaped object is transferred from the setting device 7 to the melting device 8. The melting device 8 includes a horizontal peripheral furnace 81 located downstream of the shaping device 7 and a plasma furnace 82 located downstream of the horizontal peripheral furnace 81. The melting device 8 is used to melt the fixed substance into a flowing substance, and decompose and/or vaporize the organic substance in the fixed substance. The horizontal blast furnace 81 includes a blast heater 80 and a shell 83 surrounding the blast heater 80. The cycle heater 80 includes a high-temperature-resistant tube 84 defining a heating space 85 through which the shaped object passes, and a cycle coil 86 wound around the outer surface of the high-temperature-resistant tube 84. The high temperature resistant tube is for example but not limited to silicon carbide tube. Since the plasma furnace 82 is not the main technical feature of the present invention, and the plasma furnace 82 is well known to those skilled in the art, for the sake of simplicity, details will not be described here. The horizontal magnetic furnace 81 penetrates the magnetic coils of the magnetic coil 86, so that the internal materials have turbulence, so the heating is more uniform. Compared with the vertical perimeter furnace which can only be fed in batches to process the shaped object, the present invention adopts the horizontal perimeter furnace 81 for continuous feeding to process the shaped object. In addition, the plasma furnace 82 is closely connected to the outlet end of the horizontal peripheral furnace 81, so that the temperature of the flowing material during the process from the horizontal peripheral furnace 81 to the plasma furnace 82 can be maintained and continuously heated, There is no problem of cooling and cooling, and the purpose of uniform quality is achieved. Furthermore, since the plasma furnace 82 only needs to maintain the temperature of the flowing material, it does not require high power and has an energy-saving effect.

The fluid is transferred from the plasma furnace 82 of the melting device 8 to the solidification device 9. The coagulation device 9 is located downstream of the plasma furnace 82 of the melting device 8, and the coagulation device 9 contains water, which passes through the water to cool and vitrify the flowing material, and at the same time, due to the water and the flowing material Heat exchange makes the water into steam.

The control device 11 is electrically connected to the first storage tank 1, the third storage tank 3 and the storage tank 6, and is used to control the harmful dust-collecting fly ash, the silica-aluminum-containing waste silica and the mixture Output volume.

The waste vitrification treatment equipment using the cycle and the plasma of the present invention further includes a condensation device 12 connected to the solidification device 9 and a recovery device 13 connected to the condensation device 12 and the solidification device 9. The condensation device 12 is used to condense the water vapor from the coagulation device 9 into water. The condensing device 12 is for example but not limited to a heat exchanger. The recovery device 13 is used to recover and introduce the water from the condensation device 12 into the coagulation device 9. The recovery device 13 is, for example but not limited to, a delivery pipe.

In summary, compared with the weight, volume, stability, pollution, quality, and purity of untreated waste, the method and equipment for waste vitrification treatment using frequency and plasma according to the present invention can make The weight and volume of the processed waste become lighter, at the same time, it has better stability, low pollution, high quality and high purity. Therefore, the method and equipment for waste vitrification treatment using frequency and plasma in the present invention has a reduction The effects of reduction, volume reduction and safety can be used as the current final disposal method for waste disposal in the environmental protection technology industry. Furthermore, the method and equipment for waste vitrification treatment using frequency and plasma of the present invention can simultaneously process waste and silicon-aluminum-containing materials, and can continuously process waste and silicon-aluminum-containing materials, so it can indeed be achieved The object of the invention.

However, the above are only examples of the present invention, and the scope of implementation of the present invention cannot be limited by this, any simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the patent specification are still classified as Within the scope of the invention patent.

1‧‧‧ First storage tank 2‧‧‧ Second storage tank 3‧‧‧ Third storage tank 4‧‧‧Crushing and drying device 5‧‧‧ Mixing device 6‧‧‧Storage tank 7‧‧‧ Molding device 8‧‧‧Melting device 81‧‧‧Horizontal cycle furnace 80‧‧‧Circulation heater 84‧‧‧High temperature resistant tube 85‧‧‧Heating space 86‧‧‧Circulation coil 83‧‧‧Shell 82‧ ‧‧Plasma furnace 9‧‧‧solidification device 10‧‧‧conveying device 101‧‧‧first conveying unit 102‧‧‧second conveying unit 103‧‧‧third conveying unit 104‧‧‧fourth conveying unit 11 ‧‧‧Control device 12‧‧‧Condensation device 13‧‧‧Recovery device

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: 　 FIG. 1 is a schematic diagram of an embodiment of the waste vitrification treatment equipment using weekly waves and plasma of the present invention; and 2 is a schematic cross-sectional view of a horizontal peripheral furnace of a melting device of the embodiment.

1‧‧‧The first storage tank

2‧‧‧Second storage tank

3‧‧‧The third storage tank

4‧‧‧Crushing and drying device

5‧‧‧Mixing device

6‧‧‧Storage tank

7‧‧‧Fixing device

9‧‧‧ solidification device

10‧‧‧Conveying device

101‧‧‧ First conveying unit

102‧‧‧Second conveying unit

103‧‧‧The third conveyor unit

104‧‧‧The fourth conveying unit

11‧‧‧Control device

8‧‧‧melting device

81‧‧‧horizontal wave furnace

82‧‧‧ plasma furnace

12‧‧‧Condensation device

13‧‧‧Recycling device

Claims (5)

A method for vitrification of wastes using cycle and plasma includes: a configuration step of mixing waste and materials containing silicon aluminum into a mixture; a shaping step to shape the mixture into a certain shape; a melting step, Sequentially use the heat generated by the cycle and the plasma to melt the stereotype into a fluid, and decompose or vaporize the organic matter in the stereotype, wherein the heat generated by the cycle is provided by a cycle heater, and the The cycle heater includes a high-temperature tube defining a heating space through which the shaped object passes, and a circumferential coil wound around the outer surface of the high-temperature tube; and a solidification step to cool and vitrify the flowing material. The waste vitrification treatment method using weekly and plasma according to claim 1, wherein the waste is selected from ash, sludge, or a combination thereof. The waste vitrification treatment method using weekly and plasma as described in claim 1, wherein the cooling is carried out by contact with water for heat exchange. A waste vitrification treatment equipment using cycle and plasma, including: a shaping device for shaping a mixture into a certain shape, wherein the mixture contains waste and silicon-aluminum-containing materials; a melting device is used To dissolve the shaped object into a fluid, and decompose or vaporize the organic matter in the shaped object, and include a horizontal perimeter furnace located downstream of the setting device and a downstream perimeter furnace located horizontally Plasma furnace, wherein the horizontal perimeter furnace includes a perimeter heater, and the perimeter heater includes a boundary for passing the shaped object The heat-resistant tube of the heating space of the slab, and a peripheral coil wound around the outer surface of the high-temperature tube; and a solidification device, located downstream of the melting device, and used to cool and vitrify the flowing material. The waste vitrification treatment equipment using weekly and plasma as described in claim 4, further comprising a mixing device located upstream of the shaping device, the mixing device is used to dispose the waste and the silicon-aluminum-containing material Mix into this mixture.

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