KR20230078423A - apparatus of manufacturing pyrolysis product from zinc selenide waste - Google Patents

Abstract

The present invention provides an apparatus for producing a pyrolysis product from a zinc selenium waste, which is eco-friendly and economical by recycling the zinc selenide waste that was previously discarded, comprising: a reactor which accommodates a zinc selenide (ZnSe) waste and has a heating unit heating the reactor; a reaction gas provision unit which provides oxygen or air to the reactor; and a collection unit which cools vaporized selenium dioxide (SeO_2) from among zinc oxide (ZnO) and selenium dioxide (SeO_2) that are produced by a pyrolysis reaction in the reactor, and separately collects selenium dioxide powder, wherein a reactant loading bed, in which mesh-shaped nets are stacked in a multi-layer structure, is provided inside the reactor.

Description

Apparatus of manufacturing pyrolysis product from zinc selenide waste}

The present invention relates to an apparatus for producing decomposition products from zinc selenide (ZnSe) waste, and more particularly, unlike the prior art, without disposing of zinc selenide scrap generated during laser or infrared optical lens processing, organic compounds Selenium dioxide (SeO ₂ ), which is used as a catalyst or oxidizing agent for manufacturing and used for semiconductor surface treatment, CdSe semiconductor manufacturing, solar module surface treatment, cosmetic additives, food and nutritional additives, glass pigments, and industrial corrosion inhibitor in the rubber field, It relates to a device for producing high-purity expensive decomposition products such as zinc oxide (ZnO), which is widely used in ceramic gloss, antioxidants, and cosmetic additives.

Lenses for laser devices or infrared transmission lenses must have a high refractive index, low heat dissipation and absorption, easy reflective coating and good durability, so optical materials such as zinc selenide (ZnSe) or zinc sulfide (ZnS) It is made using glass.

Thermal imaging camera systems, which require the use of infrared penetrating lenses, have been mainly used in the military field, but recently are rapidly expanding to civilian fields such as night vision for vehicles and security/surveillance. With the commercialization of external infrared cameras that have been reduced in size to a level that is possible, it is expected that these infrared lenses will be developed in a direction in which the size becomes smaller and the thermal and optical characteristics are improved so that they can be embedded in various types of mobile electronic devices in the future.

However, crystalline optical glass such as zinc selenide (ZnSe) or zinc sulfide (ZnS) is inherently expensive in raw materials, and diamond turning machining (DTM) is used to improve the shape and surface of the lens. Since it is manufactured by direct processing, there is a problem that the process or cost efficiency is not good.

In particular, since the scrap, which is the part cut to form the lens in the lens processing step, cannot be reused and is disposed of, there is a problem that the cost of the infrared lens or laser lens is further increased. In particular, in the case of zinc selenide Since it is classified as a toxic substance and must be disposed of after decomposition and neutralization treatment, the disposal cost is high, and even during reprocessing, it generates toxic gas, which is harmful to workers and the atmospheric environment, so it is safe and economical while neutralizing the toxicity of zinc selenide. Development of a technology capable of recycling zinc selenide scrap in this way is required.

In particular, there is a demand for development of a technology for obtaining high-purity decomposition products by thermally decomposing zinc selenide waste.

Korean Registered Patent No. 10-1075262 (registered on October 13, 2011)

The present invention is a device for producing decomposition products such as selenium dioxide (SeO ₂ ) and zinc oxide (ZnO), which are expensive materials that can be applied to various industrial fields by thermally decomposing zinc selenide waste such as zinc selenide (ZnSe) scrap. is intended to provide

In addition, an object of the present invention is to provide an apparatus for producing high-purity selenium dioxide (SeO ₂ ) and zinc oxide (ZnO) through an efficient process.

In addition, it is possible to substantially increase the surface area of the zinc selenide waste, thereby reducing the reaction time, and a device for producing decomposition products having a reactor capable of easily moving vapors, which are reaction products, to the upper part of the reactor and escaping. is intended to provide

The above tasks and additional tasks are described in detail below.

As a means for solving the above problems,

The present invention includes a reactor equipped with a heating unit for receiving zinc selenide (ZnSe) waste and heating the reactor; a reaction gas supply unit supplying oxygen or air to the reactor; And a collection unit for separately collecting selenium dioxide powder by cooling vaporized selenium dioxide (SeO ₂ ) among zinc oxide (ZnO) and selenium dioxide (SeO ₂ ) generated by a thermal decomposition reaction in the reactor; selenide waste containing zinc To provide a device for producing degradation products.

In addition, an apparatus for producing decomposition products from zinc selenide waste having a reactant loading platform having a structure in which a multi-layered mesh-like network is stacked inside the reactor is provided.

In addition, the mesh-shaped networks of the reactant loading zone are spaced apart from each other within the range of 5 mm to 50 mm and stacked in multiple layers, providing a device for producing decomposition products from zinc selenide waste.

In addition, an apparatus for producing decomposition products from zinc selenide waste is provided, further comprising a cooling unit having a convexly rounded lower surface at an upper portion of the reactor, and a mesh-net collecting unit located below the cooling unit.

In addition, the heating unit provides an apparatus for preparing decomposition products from zinc selenide waste, which heats the temperature in the reactor within the range of 200 ° C to 500 ° C.

In addition, it further includes a gas outlet equipped with a pressure regulator at the top of the cooling unit, the pressure of the reactor is in the range of 1 bar to 3 bar, the pressure detected at the gas outlet of the reactor is less than 1 bar to zinc selenide waste An apparatus for producing degradation products is provided.

In addition, a support portion for preventing the purity of zinc oxide from falling due to the selenium dioxide collection powder falling to the bottom of the reactor is further included at the lower portion of the collection portion, and the support portion is present in a region heated by the heating portion. Zinc selenide An apparatus for producing degradation products from waste is provided.

In addition, the inner wall of the reactor further includes a guide protruding into the reactor to guide and raise the vaporized selenium toward the central portion of the reactor, providing an apparatus for producing decomposition products from zinc selenide waste.

In addition, the reactor provides an apparatus for producing a decomposition product from zinc selenide waste, further comprising an ultrasonic probe for applying ultrasonic waves to zinc selenide (ZnSe) waste.

In addition, the heating unit provides a device for producing decomposition products from zinc selenide waste, which heats the temperature of the reactor in the range of 350 ° C to 500 ° C.

In addition, a discharge unit for discharging the vaporized selenium dioxide (SeO ₂ ) from the reactor; and a collecting container having a cooling unit for accommodating the vaporized selenium discharged from the discharging unit, wherein the collecting unit is provided in a mesh-shaped collecting container to collect selenium dioxide powder. An apparatus for producing degradation products is provided.

In addition, it is divided into zinc selenide waste, including a second collection container for secondarily collecting selenium dioxide remaining in the gas discharged from the collection container and a second collection unit in the form of a mesh net provided in the second collection container. An apparatus for producing seafood is provided.

In addition, the discharge unit provides an apparatus for producing decomposition products from zinc selenide waste, further comprising a filter for removing impurities including zinc oxide when transporting selenium dioxide in a vaporized state.

An apparatus for producing decomposition products from zinc selenide waste according to an embodiment of the present invention is eco-friendly and economical because it can recycle zinc selenide waste such as zinc selenide scrap that has been previously discarded.

In addition, high-purity selenium dioxide (SeO ₂ ) and zinc oxide (ZnO) can be produced as decomposition products of zinc selenide.

In addition, since the surface area of the zinc selenide waste can be substantially increased, the reaction time can be reduced, and the vaporized product, which is a reaction product, can easily move to the top of the reactor and escape.

The above effects and additional effects are described in detail below.

1 is a schematic configuration diagram of an apparatus for producing decomposition products from zinc selenide waste according to an embodiment of the present invention;
2 is a schematic configuration diagram of an apparatus for producing decomposition products from zinc selenide waste according to another embodiment of the present invention;
3 is a schematic configuration diagram of a reactor of an apparatus for producing decomposition products from zinc selenide waste according to another embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible even if they are displayed on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function hinders understanding of the embodiment of the present invention, the detailed description will be omitted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, or order of the corresponding component is not limited by the term. In addition, unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

1 is a schematic configuration diagram of an apparatus for producing decomposition products from zinc selenide waste according to an embodiment of the present invention.

As shown, a reactor equipped with a heating unit for accommodating zinc selenide (ZnSe) waste and heating the temperature of the reactor within the range of 200 ° C to 500 ° C, preferably within the range of 350 ° C to 500 ° C, the A reactive gas providing unit for providing oxygen or air to the _{reactor, and cooling vaporized selenium dioxide (SeO 2 ) among zinc oxide (ZnO) and selenium dioxide (SeO 2 )} generated by the thermal decomposition reaction in the reactor to obtain selenium dioxide powder. Includes a separate collecting unit. The reactor may further include an ultrasonic probe for applying ultrasonic waves to zinc selenide (ZnSe) waste. In addition, although not shown, a pressure sensor for measuring the pressure of the reactor, a temperature sensor for measuring the temperature, and the like may be further included.

Zinc selenide waste is located at the bottom of the reactor for the reaction, and a heating unit for heating the reactor may exist at the bottom of the reactor or may surround part or all of the reactor. In the case of FIG. 1, since there is a cooling unit at the top of the reactor, it is preferable to heat the lower side of the reactor.

Further comprising a gas discharge unit equipped with a pressure regulator at the top of the cooling unit, the pressure of the reactor is in the range of 1 bar to 3 bar, and adjusting the pressure detected at the discharge unit of the reactor to less than 1 bar is good for reaction efficiency. .

The reaction gas supply unit supplies oxygen or air into the reactor and provides oxygen as a reaction gas. A control valve for controlling the supply amount of the reaction gas and the pressure in the reactor may be provided, and a flow meter for checking the supply amount of the gas may be provided. It is preferable in terms of reaction rate that the outlet of the reaction gas is present at the bottom of the reactor so that the reaction gas can be supplied by penetrating into the inside of the zinc selenide waste contained in the reactor.

A cooling unit for cooling the vaporized selenium dioxide (SeO ₂ ) is provided at the top of the reactor. At the lower part of the cooling unit, a mesh-shaped collecting unit for efficiently collecting selenium dioxide is located. A mesh-shaped collecting unit is provided in the area where the vaporized selenium dioxide is cooled, and the vaporized selenium dioxide is cooled while passing through the mesh-shaped collecting unit to collect selenium dioxide powder in the mesh-shaped collecting unit. there is.

The mesh-shaped collecting unit may have a single-layer or multi-layer structure. Alternatively, it may be a form in which metal yarns are entangled in a three-dimensional structure without distinction of layers.

The cooling unit preferably has a convexly rounded lower surface. For example, it may be in the shape of a hemisphere or a sphere, and may be in the shape of a pressed sphere in which the left and right lengths are greater than the height. This is good for allowing the selenium dioxide gas to reach the central portion of the collecting unit first so that the powder collection is concentrated in the central portion. In addition, it is good for ensuring that the fallen powder can be well seated in the supporting part that prevents the collected powder from falling and lowering the purity of the zinc oxide.

On the other hand, as described above, in order to prevent the collected selenium dioxide powder from falling down and reducing the purity of zinc oxide, a supporting part is provided at the lower part of the collecting part. The supporting part may be present in a region heated by the heating part. This is good in that the selenium dioxide powder seated on the supporting part can be re-vaporized and re-collected in the collecting part. The fixing form of the supporting portion is not limited, and may be fixed through a fixing table connected to the upper part of the reactor, for example, the cooling part, or fixed to the bottom or side of the reactor.

In addition, the inner wall of the reactor may further include a guide protruding into the reactor to guide and raise the vaporized selenium dioxide to the center of the reactor. Since the collection part is located in the central part of the reactor, the vaporized selenium dioxide moves to the side of the reactor and rises, so the collection efficiency in the collection part may decrease. In order to prevent this, a guide unit protruding into the reactor is provided to guide the vaporized selenium dioxide to the central portion of the reactor. The guide part is present on the top of the supporting part and is present in a region heated by the heating part, and the protruding shape may be an inclined shape that becomes higher toward the center of the reactor.

After the selenium dioxide is collected, the remaining gas is discharged through the gas outlet and introduced into the gas neutralizer. A pressure regulator may be installed in the gas outlet. The pressure regulator may be in the form of a valve, pressure reducing pump or the like. It is preferable to adjust the pressure sensed by the pressure regulator to less than 1 bar so that oxygen is easily excited and the reaction occurs well.

Meanwhile, after completion of the thermal decomposition reaction, zinc oxide exists as a solid in the reactor. Thus, zinc oxide present in the reactor can be obtained and pulverized to obtain zinc oxide powder. The grinding method of zinc oxide is not limited and may be a ball mill method.

Figure 2 is a schematic configuration diagram of an apparatus for producing decomposition products from zinc selenide waste according to another embodiment of the present invention. Since the same reference numerals as those in FIG. 1 have the same configuration and function, the above description is used and omitted below.

As shown in Figure 2, the cooling unit and the collecting unit are provided separately from the reactor. That is, a discharge unit for discharging the vaporized selenium dioxide (SeO ₂ ) from the reactor; and a collecting container separately equipped with a cooling unit for accommodating the vaporized selenium dioxide discharged from the discharge unit. The collecting unit is provided in a collecting container in a mesh shape to collect selenium dioxide powder. The mesh shape of the collecting unit has been described above. When the selenium dioxide is transported in a vaporized state, the discharge unit may further include a filter for removing impurities including zinc oxide to increase the purity of the selenium dioxide powder.

The piping between the reactor outlet and the collector is maintained within the range of 200° C. to 300° C. through a heating wire or the like so that the vaporized material can be transferred to the collector in a vaporized state.

Optionally, a second collecting container for secondarily collecting selenium dioxide remaining in the gas discharged from the collecting container and a mesh-shaped second collecting part provided in the second collecting container are further provided to collect selenium dioxide. volume can be increased.

3 is a schematic configuration diagram of a reactor of an apparatus for producing decomposition products from zinc selenide waste according to another embodiment of the present invention. As shown, the reactor is provided with a reactant loading table having a structure in which a multi-layered mesh network is stacked inside the reactor. Specifically, the reactant loading stage may be located at the bottom of the inside of the reactor. Zinc selenide waste is loaded in multiple layers on the multi-layered mesh net. The distance between the multi-layered mesh networks may be in the range of 5 mm to 50 mm. If the distance between the mesh networks is less than the above range, the effect of the multi-layer structure may be reduced, and if it exceeds the above range, the size of the reactor may increase or the loading amount of zinc selenide waste may be small, resulting in inefficiency. In addition, zinc selenide waste may be stacked in a thickness of 2 to 10 mm in each layer. Below the above range, the loading amount of zinc selenide waste may be inefficient, and when it exceeds the above range, the surface area may be reduced and the reaction time may be longer, and it may be difficult for the vaporized material to easily escape from each layer when the reactant is vaporized. there is.

This structure of the reactant loading zone can substantially increase the surface area of the zinc selenide waste existing in the reactor, thereby reducing the reaction time, and allowing the vaporized product, which is a reaction product, to easily move to the top of the reactor and escape.

Hereinafter, a method for preparing a decomposition product from zinc selenide waste according to an embodiment of the present invention will be described.

A method for producing a decomposition product from zinc selenide waste according to an embodiment of the present invention is to put zinc selenide (ZnSe) waste into a reactor, heat it in an oxygen atmosphere in the range of 200 ° C to 1000 ° C and obtain a thermal decomposition product Step (S10), collecting selenium dioxide powder by transferring selenium dioxide, which is one of the thermal decomposition products, in a vaporized state and then cooling it (S20), and zinc oxide, which is one of the thermal decomposition products and is present in the reactor as a solid. Obtaining and pulverizing to obtain zinc oxide powder (S30).

It will be described in more detail below.

In the step of obtaining the thermal decomposition product (S10), zinc selenide waste is first introduced into the reactor. Zinc selenide waste may be zinc selenide itself or a mixture of other components. In particular, it may be a zinc selenide component or scrap cut after processing a lens for a laser device or an infrared transmission lens containing the zinc selenide component.

Although not limited, the zinc selenide waste may be pretreated to first remove impurities other than zinc selenide and then introduced into the reactor. For example, contaminants may be washed and dried before being introduced into the reactor. Alternatively, impurities may be removed by heating in a vacuum state. At this time, heating may be performed within the range of 100 ℃ to 300 ℃. When the heating is performed at a temperature of less than 100 ° C, the impurity removal effect is insignificant, and when the heating is performed at a temperature of more than 300 ° C, a side reaction of zinc selenide occurs in the presence of impurities, resulting in a decrease in yield and purity. .

When the zinc selenide waste is put into the reactor, the average particle diameter of the zinc selenide waste is preferably in the range of 0.1 mm to 2 mm. Here, the particle size is defined as the largest value when a distance between both ends is measured regardless of the shape of the zinc selenide waste. If the average particle diameter of the zinc selenide waste is smaller than 0.1 mm, when zinc selenide is obtained after the thermal decomposition reaction, some zinc oxide is present and the purity is lowered. Time can saturate without any further decrease. If the average particle diameter of the zinc selenide waste exceeds 2 mm, the thermal decomposition reaction time is prolonged, and the thermal decomposition reaction is incomplete, so that zinc selenide remains in zinc oxide, which may reduce purity and yield.

Zinc selenide waste is put into a reactor and heated in an oxygen or air atmosphere to obtain a thermal decomposition product. Thermal decomposition products in an oxygen or air atmosphere include selenium dioxide and zinc oxide. Although not limited, stirring may be performed to increase the decomposition rate of the zinc selenide waste during the reaction.

Optionally, before heating in an oxygen or air atmosphere, the reactor may be first decompressed to a vacuum level to prevent side reactions, and may be purged by flowing inert gas such as argon or nitrogen gas.

The heating temperature is not limited but may be in the range of 200°C to 500°C. More preferably, it may be in the range of 350 ° C to 500 ° C. If the amount is less than the above range, the reaction may not be completely performed or the reaction time may be long, and selenium dioxide may remain in the reactor to reduce the purity of zinc oxide. If the above range is exceeded, surface hardening may occur due to excessive reaction, a part of zinc oxide may be transported together with selenium dioxide, and the purity of selenium dioxide may decrease, and the surface of the reactor made of stainless material may be oxidized to generate impurities.

The pressure of the reactor is not limited, but can be adjusted within the range of 1 bar to 3 bar by injecting air or oxygen. In addition, it is preferable to install a pressure regulator at the discharge part of the reactor to adjust the pressure at the discharge part, and adjust the pressure sensed by the pressure regulator to less than 1 bar so that oxygen is easily excited and the reaction occurs well.

Meanwhile, in the step of obtaining a thermal decomposition product, zinc selenide (ZnSe) waste may be heated while ultrasonic waves are applied. The reaction may be accelerated during the thermal decomposition reaction while applying ultrasonic waves, and the yield and purity may be improved by accelerating the evaporation of selenium dioxide.

Next, in the step of collecting the selenium dioxide powder (S20), selenium dioxide (SeO ₂ ), one of the thermal decomposition products, is transported in a vaporized state and then cooled to collect the selenium dioxide powder. In order to increase the yield of selenium dioxide, impurities such as zinc oxide may be removed by passing the selenium dioxide through a filter in the process of being transported in a vaporized state. In the process of transporting and filtering, it is preferable to maintain the vaporization temperature of selenium dioxide or higher in order to maintain the vaporization state of selenium dioxide. The meaning of conveying in a vaporized state includes conveying in a vaporized state to the top of the reactor.

The vaporized selenium dioxide is cooled to collect selenium dioxide powder. The cooling method is not limited, and the selenium dioxide can be cooled by flowing cooling water outside the transfer pipe or the upper part of the reactor. For rapid cooling, liquid nitrogen may be used as a refrigerant.

In order to efficiently collect selenium dioxide and obtain it as fine powder, a mesh-shaped collecting part is provided in a region where the vaporized selenium dioxide is cooled, and the vaporized selenium dioxide is cooled while passing through the mesh-shaped collecting part. The selenium dioxide powder can be collected in the mesh-shaped collecting unit. The mesh-shaped collecting unit may have a single-layer or multi-layer structure. Alternatively, it may be a form in which metal yarns are entangled in a three-dimensional structure without distinction of layers. In this way, it is possible to collect selenium dioxide powder having an average particle diameter in the range of 10 μm to 200 μm. The average particle diameter here is the average particle diameter of the powder measured by electron micrograph (SEM).

Meanwhile, after completion of the thermal decomposition reaction, zinc oxide exists as a solid in the reactor. Therefore, zinc oxide present in the reactor may be obtained and pulverized to obtain zinc oxide powder (S30). The grinding method of zinc oxide is not limited and may be a ball mill method.

It was confirmed that the purity of the zinc oxide powder and selenium dioxide powder finally obtained through the above process was 99.0% or more. In particular, since the concentration of selenium in the zinc oxide powder was less than 0.1 wt% and the concentration of zinc in the selenium dioxide powder was less than 0.1 wt%, it was confirmed that zinc and selenium elements were well separated. In addition, the purity of the zinc oxide powder was 99.0 wt or more, and the purity of the selenium dioxide powder was 98.0% or more, so high purity was obtained. When ultrasonic waves were not used, high-purity powder within the above range could not be obtained.

Optionally, the obtained selenium dioxide powder is reacted with sodium hydroxide (NaOH) to obtain high-purity sodium selenite (Na ₂ SeO ₃ ). After obtaining selenium dioxide powder, it can be reacted with sodium hydroxide.

Through the method of producing decomposition products from zinc selenide waste as described above, it is eco-friendly and economical because it is possible to recycle zinc selenide waste such as zinc selenide scrap that has been previously discarded.

In addition, selenium dioxide (SeO ₂ ), which is used as a catalyst or oxidizing agent for organic compound production, and used for semiconductor surface treatment, CdSe semiconductor manufacturing, solar module surface treatment, cosmetic additives, food and nutritional additives, and glass pigments, and rubber field Zinc oxide (ZnO), which is widely used in industrial corrosion inhibitors, ceramic gloss and antioxidants, cosmetic additives, etc., and high-purity decomposition products such as sodium selenite (Na ₂ SeO ₃ ) can be manufactured with

In the above, embodiments according to the present invention have been described in detail with reference to the accompanying drawings. However, the embodiments of the present invention are not necessarily limited to the above-described embodiments, and it will be taken for granted that various modifications and implementation within the equivalent range are possible by those skilled in the art to which the present invention belongs. . Therefore, it will be said that the true scope of the present invention is determined by the claims described later.

10: reactor
15: ultrasonic probe
20: heating unit
30: reactive gas supply unit
40: cooling unit
41: fixture
42: supporting part
43: guide unit
50: collection container
51: collection unit
52: gas outlet
60: pressure regulator
61: gas neutralizer
70: reactant loading table

Claims (9)

A reactor equipped with a heating unit for receiving zinc selenide (ZnSe) waste and heating the reactor;
a reaction gas supply unit supplying oxygen or air to the reactor; and
A collection unit for separately collecting selenium dioxide powder by cooling vaporized selenium dioxide (SeO ₂ ) among zinc oxide (ZnO) and selenium dioxide (SeO ₂ ) generated by the thermal decomposition reaction in the reactor; includes,
An apparatus for producing decomposition products from zinc selenide waste, comprising a reactant loading table having a structure in which a mesh-like network is multi-layered inside the reactor.
According to claim 1,
A device for producing decomposition products from zinc selenide waste, wherein the mesh-shaped networks of the reactant loading zone are multi-layered and spaced apart from each other within the range of 5 mm to 50 mm.
According to claim 1,
The heating unit heats the temperature in the reactor in the range of 200 ° C to 500 ° C, an apparatus for producing decomposition products from zinc selenide waste.
According to claim 1,
Further comprising a gas discharge unit equipped with a pressure regulator at the top of the cooling unit, the pressure of the reactor is in the range of 1 bar to 3 bar, and the pressure detected at the gas discharge unit of the reactor is less than 1 bar, a decomposition product of zinc selenide waste device for manufacturing.
According to claim 1,
Further comprising a supporting portion to prevent the selenium dioxide collecting powder from falling to the lower portion of the reactor and reducing the purity of zinc oxide at the lower portion of the collecting portion, and the supporting portion is present in a region heated by the heating unit, to zinc selenide waste A device for producing decomposition products.
According to claim 1,
The heating unit is a device for producing a decomposition product with zinc selenide waste to heat the temperature of the reactor in the range of 350 ℃ to 500 ℃.
According to claim 1,
A discharge unit for discharging vaporized selenium dioxide (SeO ₂ ) from the reactor; and
A collection container accommodating the vaporized selenium dioxide discharged from the discharge unit and having a cooling unit; includes,
The collecting unit is provided in a collecting container in a mesh net shape to collect selenium dioxide powder, a device for producing decomposition products from zinc selenide waste.
According to claim 7,
A second collection container for secondarily collecting selenium dioxide remaining in the gas discharged from the collection container and a second collection unit in the form of a mesh net provided in the second collection container. manufacturing device.
According to claim 7,
The discharge unit further comprises a filter for removing impurities including zinc oxide when transporting selenium dioxide in a vaporized state.

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