TW201831240A - Waste vitrification treatment method and apparatus using frequency and plasma capable of making the treated waste lighter and smaller while having characteristics of high stability, low pollution, high quality, and high purity - Google Patents

Abstract

A waste vitrification treatment method using frequency and plasma includes a preparing step, a shaping step, a melting step and a solidifying step. The preparing step is to mix a waste with a silicon-aluminum containing material into a mixture. The shaping step is to shape the mixture into a shaped object. The melting step is to sequentially use heat generated by frequency and plasma to melt the shaped object into a fluid, and to decompose or gasify an organic substance in the shaped object. The solidifying step is to cool and vitrify the fluid. The present invention further provides a waste vitrification treatment apparatus using frequency and plasma which includes a shaping device, a melting device comprising a horizontal frequency furnace and a plasma furnace, and a solidifying device. Through the waste vitrification treatment method and apparatus using frequency and plasma, the waste after treatment can have better quality and purity.

Description

Method and equipment for vitrification treatment of wastes using peripheral waves and plasma

The invention relates to a processing method and a processing device, in particular to a method for vitrifying a waste using a cycle and a plasma and a device for vitrifying a waste using a cycle and a plasma.

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

Taiwan Patent Publication No. I312703 discloses an incinerator fly ash feeding device which can automate continuous feeding operation and can completely leave the fly ash in the melting furnace. The incinerator fly ash feeding device includes an ingot making unit for granulating the fly ash into an ingot, and a control unit for controlling the ingot injecting unit. Further, the ash ingot is sent to a plasma furnace for melting.

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

Therefore, it is an object of the present invention to provide a method for vitrifying a waste using a cycle and a plasma.

Therefore, the method for treating vitrified waste using plasma and plasma includes a configuration step, a setting step, a melting step, and a solidification step. The configuration step is to mix the waste with a silicon-aluminum-containing material into a mixture. The setting step is to shape the mixture into a certain shape. In the melting step, the heat generated by the cycle and the plasma is sequentially used to melt the shape into a fluid, and decompose or gasify the organic matter in the shape. Provided, and the cycle heater includes a high temperature resistant tube defining a heating space through which the shaped object passes, and a cycle 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 using a peripheral wave and a plasma.

The present invention utilizes a cycle and plasma waste waste vitrification treatment equipment, including: a setting device, a melting device, and a solidification device. The sizing device is used to shape a mixture into a certain shape, wherein the mixture includes waste and a silicon-aluminum-containing material. The melting device is used for melting the shaped material into a flowing material, and decomposing or gasifying the organic matter in the shaped material. The melting device includes a horizontal cycle furnace located downstream of the setting device and a horizontal cycle furnace. The plasma furnace at the downstream, wherein the horizontal cycle furnace includes a cycle heater, and the cycle heater includes a high-temperature resistant tube defining a heating space for the shaped object to pass through, and a high-temperature resistant winding A peripheral 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 fluid.

The effect of the invention is that compared with the weight, volume, stability, pollution, quality and purity of the untreated waste, the method and equipment for the vitrification treatment of waste using plasma and plasma can be made through the invention, The treated waste becomes lighter and smaller in volume, and at the same time has characteristics such as high stability, low pollution, high quality, and high purity. Therefore, the method and equipment for vitrifying waste using plasma 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 vitrification of waste using a cycle and plasma can treat waste and silicon-aluminum-containing materials simultaneously, and can continuously treat waste and silicon-aluminum-containing materials.

An embodiment of the method for treating vitrified waste using plasma and plasma according to the present invention includes a configuration step, a setting step after the configuration step, a melting step after the setting step, and a melting step After the coagulation step.

In this configuration step, the waste is mixed with the silicon-aluminum-containing material into a mixture. The waste can be used singly or in combination, and the waste such as but not limited to ash and sludge. The sludge is, for example, but not limited to, water-containing sludge. The water-containing sludge is, for example, water-containing sludge produced in the manufacturing industry or water-containing sludge produced in the electroplating industry. When the waste is wet sludge, it needs to be dried and crushed. The shredding treatment is used to shred agglomerates or lumps formed due to the tangle of sticky substances or fibers in the wet sludge. In this embodiment, the waste is from the harmful dust and fly ash produced by the printing and dyeing industry and from the harmful sludge produced by the electroplating industry. The silicon-aluminum-containing material is, for example, but not limited to, glass powder containing silicon-aluminum. In this embodiment, the silicon-aluminum-containing material is silicon-aluminum-containing waste silica generated after a wafer is cut by a wafer fab. The amount of the waste and the silicon-aluminum-containing material 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 type stirring tank.

In this setting step, the mixture is shaped into a certain shape. Through the sizing step, it is possible to prevent the mixture from being tangled when the mixture is directly subjected to the melting step, thereby affecting the quality of the melting process. This shaping is performed using a certain type of device. The sizing device is, for example, but not limited to, a tablet press. The shape of the shaped article is not particularly limited, and may be granular, lumpy, or powdery.

In this melting step, the heat generated by the cycle is firstly used for the first heat treatment of the shaped object, and then the heat generated by the plasma is used for the second heat treatment, so that the shaped object is melted into a flowing substance, and the shape is set. Organic matter in the substance is decomposed or gasified to achieve the effects of volume reduction and volume reduction. The organic substance is, for example, dioxin. In addition, in addition to organic substances, inorganic substances are also present in the shaped material. Examples of the inorganic substance include non-metallic substances, heavy metals, and metals other than heavy metals. In the melting step, a heavy metal in the inorganic substance or a metal other than a heavy metal is converted into a stable substance by a reaction due to heat, thereby achieving a stabilization effect. At the same time, through the silicon-aluminum-containing material, the heavy metal or harmful substance is confined in the flowing substance without being dissolved out, thereby achieving a safety effect. 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 may burst into small glassy particles due to thermal expansion and contraction. In the solidification step, in addition to cooling and vitrifying the fluid, the water is converted into water vapor due to heat exchange between the water and the fluid.

The method for treating vitrified waste using a plasma and a plasma further comprises 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 fluid in the coagulation step, so that the water obtained in the condensation step can be recycled and reused.

The treated waste obtained by the method for treating vitrified and plasma-containing waste by 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 marketability.

Referring to FIG. 1 and FIG. 2, an embodiment of a waste vitrification treatment device utilizing a plasma and a plasma according to the present invention includes a first storage tank 1, a second storage tank 2, and a third storage tank 3 A crushing and drying device 4 located downstream of the second storage tank 2, a mixing and drying device 4 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 setting device 7 located downstream of the storage tank 6, a melting device 8 located downstream of the setting device 7, and a A solidification device 9, a conveying device 10, and a control device 11 downstream of the melting device 8. 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, sludge, and the like. The silicon-aluminum-containing material is, for example, but not limited to, glass powder containing silicon-aluminum. In this embodiment, the waste is harmful dust and fly ash or harmful sludge. The silicon-aluminum-containing material is silicon-aluminum-containing waste silica generated after a wafer is cut by a fab.

The first storage tank 1, the second storage tank 2 and the third storage tank 3 are respectively used to store harmful dust and fly ash, harmful sludge, and waste silica containing silicon aluminum. The crushing and drying device 4 is used for drying and crushing 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 broken 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 respectively located downstream of the first storage tank 1 and downstream of the third storage tank 3, and are respectively used to fly the harmful dust collection. The ash and the silicon-aluminum-containing waste silica are conveyed to the mixing device 5. The second conveying unit 102 and the third conveying unit 103 are, for example, but not limited to, a vacuum conveyor.

The mixing device 5 is used to mix the harmful dust and fly ash, the harmful sludge and the silicon-aluminum-containing waste silica 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 setting device 7. The setting device 7 is used to shape the mixture into a certain shape. The setting device 7 is, for example but not limited to, a tablet press.

The shaped object is conveyed from the setting device 7 to the melting device 8. The melting device 8 includes a horizontal cycle furnace 81 located downstream of the sizing device 7 and a plasma furnace 82 located downstream of the horizontal cycle furnace 81. The melting device 8 is used for melting the shaped object into a flowing substance, and decomposing and / or gasifying the organic matter in the shaped object. The horizontal frequency furnace 81 includes a frequency heater 80 and a shell member 83 surrounding the frequency heater 80. The peripheral heater 80 includes a high temperature resistant tube 84 defining a heating space 85 through which the shaped object passes, and a peripheral 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, a silicon carbide tube. Because 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 are not described here. The horizontal magnetic field furnace 81 passes through the magnetic field lines of the peripheral coil 86 to cause the internal material to have a turbulent phenomenon, so the heating is more uniform. Compared to a vertical cycle furnace that can only feed in batches to process the shaped object, the present invention adopts a horizontal cycle furnace 81 that can continuously feed the shaped object. In addition, the plasma furnace 82 is tightly connected to the outlet end of the horizontal cycle furnace 81, so that the temperature of the fluid during the process from the horizontal cycle furnace 81 to the plasma furnace 82 can be maintained and continuously heated. Without the problem of cooling and cooling, and achieve the purpose of uniform quality. In addition, since the plasma furnace 82 only needs to maintain the temperature of the flowing material, it does not need high power and has energy saving effect.

The fluid is conveyed 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 and permeates the water to cool and vitrify the fluid, and at the same time, the water and the fluid are carried out. Heat exchange causes the water to turn into water vapor.

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 silicon-aluminum-containing waste silica, and the mixture. Output.

The waste vitrification treatment equipment using the peripheral wave and the plasma according to the present invention further includes a condensing device 12 connected to the coagulation device 9 and a recovery device 13 connected to the condensing device 12 and the coagulation device 9. The condensation device 12 is used to condense 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 the water from the condensation device 12 and introduce it into the coagulation device 9. The recovery device 13 is, for example, but not limited to, a conveying pipe.

In summary, compared with the weight, volume, stability, pollution, quality, and purity of untreated waste, the method and equipment for vitrification treatment of waste using plasma and plasma through the present invention can make economical The weight of the processed waste becomes lighter and the volume becomes smaller, and at the same time, it has better stability, low pollution, high quality and high purity. Therefore, the method and equipment for vitrifying the waste and using plasma of the present invention have a reduction The effect 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 the vitrification of waste and the use of plasma and plasma in the present invention can simultaneously treat waste and silicon-aluminum-containing materials, and can continuously treat waste and silicon-aluminum-containing materials. Object of the invention.

However, the above are only examples of the present invention. When 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 and the contents of the patent specification of the present invention are still Within the scope of the invention patent.

1‧‧‧ the first storage tank

2‧‧‧Second Storage Tank

3‧‧‧ third storage tank

4‧‧‧ crushing and drying device

5‧‧‧ mixing device

6‧‧‧ storage tank

7‧‧‧ styling device

8‧‧‧ melting device

81‧‧‧Horizontal frequency furnace

80‧‧‧ weekly heater

84‧‧‧High temperature tube

85‧‧‧ heated space

86‧‧‧Cycle wave coil

83‧‧‧shell

82‧‧‧ Plasma Furnace

9‧‧‧ solidification device

10‧‧‧ Conveying device

101‧‧‧The first conveying unit

102‧‧‧Second Conveying Unit

103‧‧‧Third Conveying Unit

104‧‧‧Fourth Conveying Unit

11‧‧‧Control device

12‧‧‧Condensing device

13‧‧‧ Recovery device

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

Claims (5)

A method for treating vitrified waste using a plasma and a plasma, comprising: a configuration step of mixing the waste and a silicon-aluminum-containing material into a mixture; a setting step of setting the mixture into a certain shape; a melting step, The heat generated by the cycle and the plasma is sequentially used to melt the shaped object into a flowing substance and decompose or gasify the organic matter in the shaped object. The heat generated by the cycle is provided by a cycle heater and the The cycle heater includes a high-temperature resistant tube defining a heating space through which the shaped object passes, and a cycle coil wound around the outer surface of the high-temperature resistant tube; and a solidification step to cool and vitrify the fluid. The method for vitrifying a waste using a plasma and a plasma according to claim 1, wherein the waste is selected from the group consisting of ash, sludge, or a combination thereof. The method for treating vitrified waste using a plasma and a plasma according to claim 1, wherein the cooling is performed by contacting water for heat exchange. A waste vitrification treatment equipment utilizing a peripheral wave and a plasma includes: a sizing device for shaping a mixture into a certain shape, wherein the mixture contains waste and a silicon-aluminum-containing material; a melting device for To melt the molding into a flowing material, and decompose or gasify the organics in the molding, and include a horizontal frequency furnace located downstream of the molding device and a plasma located downstream of the frequency furnace Furnace, wherein the horizontal cycle furnace includes a cycle heater, and the cycle heater includes a high-temperature resistant tube defining a heating space for the shaped object to pass through, and a peripheral wave wound around the outer surface of the high-temperature resistant tube A coil; and a solidification device located downstream of the melting device and used to cool and vitrify the flow. The waste vitrification treatment equipment using a peripheral wave and a plasma as described in claim 4, further comprising a mixing device located upstream of the sizing device, the mixing device is used to mix the waste with the aluminosilicate Mix into this mixture.