Device for treating industrial carnallite

Abstract

The utility model relates to the technical field of industrial carnallite treatment, in particular to a device for treating industrial carnallite. In order to solve the problem that an existing industrial carnallite treatment method is not environmentally friendly, the novel device applied to industrial carnallite treatment is provided and comprises an intermediate frequency furnace, a flue gas outlet is formed in the furnace top of the intermediate frequency furnace, a feeding port is formed in the top end of the intermediate frequency furnace, a spiral feeding machine is arranged at the feeding port in a sealed mode, and a discharging port is formed in the bottom end of the intermediate frequency furnace. A smoke outlet of the intermediate frequency furnace is connected with the tail gas treatment system. The device provided by the utility model is a brand-new device and method applied to treatment of industrial carnallite, i.e., the industrial carnallite and auxiliary materials are mixed and melted to become glass-phase melt which is used as a raw material in the glass industry.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial miscellaneous salt treatment, in particular to a device used for treating industrial miscellaneous salt. Background Art

[0002] Industrial salts are hazardous solid wastes containing one or more inorganic salts, such as sodium chloride, sodium nitrate, calcium chloride, magnesium chloride, and sodium sulfide. These salts have a strong, pungent odor, are highly toxic, have complex compositions, and are difficult to dispose of. Traditionally, industrial salts have been disposed of in landfills, which poses significant risks to local environmental and safety concerns. Summary of the Invention

[0003] In order to solve the problem that the existing method for treating industrial miscellaneous salts is not environmentally friendly, the utility model provides a new device for treating industrial miscellaneous salts.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] A device for treating industrial miscellaneous salts includes a medium frequency furnace, a furnace top of the medium frequency furnace is provided with a smoke outlet, a top end of the medium frequency furnace is provided with a feeding port, a spiral feeder is sealed at the feeding port, a bottom end of the medium frequency furnace is provided with a discharge port, and the smoke outlet of the medium frequency furnace is connected to an exhaust gas treatment system.

[0006] Furthermore, the exhaust gas treatment system includes a bag dust collector, a purification tower, a water remover, a liquefaction device, and a CO2 purification device. The flue gas outlet of the medium frequency furnace is connected to the flue gas inlet of the bag dust collector, the flue gas outlet of the bag dust collector is connected to the flue gas inlet of the purification tower, the flue gas outlet of the purification tower is connected to the gas inlet of the water removal equipment, the gas outlet of the water removal equipment is connected to the gas inlet of the liquefaction device, the purification outlet of the liquefaction device is used to extract SO2, the gas outlet of the liquefaction device is connected to the gas inlet of the CO2 purification device, the CO2 purification device adsorbs the remaining SO2, and the gas outlet of the CO2 purification device is used to extract CO2.

[0007] Furthermore, the medium frequency furnace has two feeding ports which are symmetrically distributed at the top of the medium frequency furnace. Both feeding ports are equipped with spiral feeders to facilitate uniform feeding and further improve the treatment effect of industrial miscellaneous salts.

[0008] Furthermore, an L-shaped melt buffer chamber is fixed to the discharge port of the medium frequency furnace, one end of the L-shaped melt buffer chamber is sealed and connected to the discharge port of the medium frequency furnace, and the other end of the L-shaped melt buffer chamber is arranged higher than the discharge port of the medium frequency furnace, so that the glass phase melt can be temporarily buffered in the L-shaped melt buffer chamber after being discharged from the discharge port of the medium frequency furnace, and the lower part of the heat source is sealed to reduce heat loss. Subsequently, the industrial miscellaneous salt mixture enters the medium frequency furnace layer by layer and dissolves to form a glass phase melt, so that the glass phase melt temporarily suspended in the L-shaped melt buffer chamber is discharged from the other end of the L-shaped melt buffer chamber.

[0009] The method for treating industrial miscellaneous salts by the above-mentioned device comprises the following steps in sequence: 1) Batching: industrial miscellaneous salts are mixed with silica sand and coal powder to form an industrial miscellaneous salt mixture (the composition of industrial miscellaneous salts is different, so the proportion of silica sand and coal powder is also different. The specific proportion can be obtained by those skilled in the art through routine experiments. For example, the composition of industrial miscellaneous salts is Na2SO4 and a small amount of Na2CO3, and the mass ratio of industrial miscellaneous salts to silica sand and coal powder is (4-5): (6-5.4): (0.1-0.4); 2) Starting the furnace: the industrial miscellaneous salt mixture is first added into the intermediate frequency furnace through the charging port at the top of the intermediate frequency furnace, and the industrial miscellaneous salt mixture is added into the intermediate frequency furnace through the charging port at the top of the intermediate frequency furnace. At the same time, fuel is added at the flue gas outlet of the medium frequency furnace to make the industrial salt mixture burn, heat and melt into a glass phase; 3) Start the furnace: Turn on the medium frequency furnace and connect the flue gas outlet to the exhaust gas treatment system at the same time, and start continuously adding the industrial salt mixture to the feeding port at the top of the medium frequency furnace. The medium frequency furnace uses the medium frequency electromagnetic induction principle to melt the industrial salt mixture. The glass phase melt formed by the melting is discharged from the discharge port at the bottom end of the medium frequency furnace and then recycled as a raw material for glass production. The exhaust gas generated during the melting process is discharged from the flue gas outlet of the medium frequency furnace and enters the exhaust gas treatment system, where the exhaust gas is treated and then discharged.

[0010] Principle description: Industrial miscellaneous salt is added to silica sand and carbon powder to form an industrial miscellaneous salt mixture, which is melted by fuel combustion to form a glass phase melt. Then, the conductive property of the glass phase melt is used to start the medium frequency furnace and use the medium frequency induction principle to melt the subsequent industrial miscellaneous salt mixture added to the medium frequency furnace into a glass phase melt. The molten glass phase melt is discharged from the discharge port of the medium frequency furnace. During this period, the industrial miscellaneous salt mixture is continuously added, the glass phase melt is continuously generated, and the medium frequency furnace keeps working to continuously dissolve the subsequent industrial miscellaneous salt mixture, so that it forms a continuous operation and dissolves the generated glass phase melt. The glass phase melt is then used as a raw material for various glass productions; at the same time, the exhaust gas generated by the subsequent melting of the industrial salt mixture through the medium frequency induction principle is mainly SO2, CO2, and H2O, with a low dust content. Therefore, the exhaust gas discharged from the flue gas outlet of the medium frequency furnace passes through a bag dust collector, a purification tower, and a water removal equipment in sequence to remove dust, purify, and remove water from the exhaust gas, and then passes through a liquefaction device to cool it down and use the different liquefaction temperatures of SO2 and CO2 to extract SO2. The remaining flue gas enters the CO2 purification device, which adsorbs the remaining SO2 and then extracts CO2.

[0011] The beneficial effects produced by the present invention are as follows: the device described in the present invention is a brand-new device for treating industrial miscellaneous salts, which comprehensively utilizes industrial miscellaneous salt resources and turns waste into treasure, so that industrial miscellaneous salts are mixed with auxiliary materials and melted into a glass phase melt, which is used as raw materials in the glass industry. At the same time, the medium frequency furnace itself heats metal materials, and the present application first forms a conductive glass phase by starting the furnace, and then uses the glass phase to enable the medium frequency furnace to use the medium frequency induction principle to melt the subsequently added industrial miscellaneous salt mixture. In addition, the exhaust gas generated by the medium frequency furnace has a low dust content, and its exhaust gas is treated and collected into SO2 and CO2 products, which benefits the country and the people, takes the existing disposal methods of industrial miscellaneous salts to a higher level in terms of environmental protection and safety, and plays a huge role in energy conservation and carbon reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention.

[0015] In the figure: 1-intermediate frequency furnace, 2-flue gas outlet, 3-screw feeder, 4-discharge port, 5-bag dust collector, 6-purification tower, 7-water eliminator, 8-liquefaction device, 9-CO2 purification device, 10-L-type melt buffer chamber. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0017] In the description, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance. It should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms based on specific circumstances.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0020] like Figure 1 As shown, a device for treating industrial miscellaneous salts includes a medium frequency furnace 1, a flue gas outlet 2 is provided on the top of the medium frequency furnace 1, a feeding port is provided on the top of the medium frequency furnace 1, a feeding machine is sealed at the feeding port, a discharge port 4 is provided at the bottom end of the medium frequency furnace 1, and the flue gas outlet 2 of the medium frequency furnace 1 is connected to the exhaust gas treatment system.

[0021] During specific implementation, the exhaust gas treatment system includes a bag dust collector 5, a purification tower 6, a water remover 7, a liquefaction device 8, and a CO2 purification device 9. The flue gas outlet 2 of the medium frequency furnace 1 is connected to the flue gas inlet of the bag dust collector 5, the flue gas outlet 2 of the bag dust collector 5 is connected to the flue gas inlet of the purification tower 6, the flue gas outlet 2 of the purification tower 6 is connected to the gas inlet of the water removal equipment, the gas outlet of the water removal equipment is connected to the gas inlet of the liquefaction device 8, the purification outlet of the liquefaction device 8 is used to extract SO2, the gas outlet of the liquefaction device 8 is connected to the gas inlet of the CO2 purification device 9, and the gas outlet of the CO2 purification device 9 is used to extract CO2.

[0022] In specific implementation, the feeder is a spiral feeder 3, which feeds evenly and has good sealing performance, further improving the treatment effect of industrial salts.

[0023] In specific implementation, there are two feeding ports of the intermediate frequency furnace 1 and they are symmetrically distributed at the top of the intermediate frequency furnace 1. Both feeding ports are equipped with spiral feeders 3 to facilitate uniform feeding and further improve the treatment effect of industrial miscellaneous salts.

[0024] During specific implementation, an L-shaped melt buffer chamber 10 is fixed to the discharge port 4 of the medium frequency furnace 1. One end of the L-shaped melt buffer chamber 10 is sealed and connected to the discharge port 4 of the medium frequency furnace 1, and the other end of the L-shaped melt buffer chamber 10 is arranged higher than the discharge port 4 of the medium frequency furnace 1, so that the glass phase melt can be temporarily buffered in the L-shaped melt buffer chamber 10 after being discharged from the discharge port 4 of the medium frequency furnace 1, and the lower part of the heat source is sealed to reduce heat loss. Subsequently, the industrial miscellaneous salt mixture enters the medium frequency furnace 1 layer by layer and dissolves to form a glass phase melt, so that the glass phase melt temporarily suspended in the L-shaped melt buffer chamber 10 is discharged from the other end of the L-shaped melt buffer chamber 10.

[0025] The method for treating industrial miscellaneous salts by the above-mentioned device comprises the following steps in sequence: 1) Batching: industrial miscellaneous salts are mixed with silica sand and carbon powder to form an industrial miscellaneous salt mixture (the composition of industrial miscellaneous salts is different, so the proportion of silica sand and coal powder is also different. The specific proportion can be obtained by those skilled in the art through routine experiments. For example, the composition of industrial miscellaneous salts is Na2SO4 and a small amount of Na2CO3, and the mass ratio of industrial miscellaneous salts to silica sand and coal powder is (4-5): (6-5.4): (0.1-0.4); 2) Starting the furnace: for the first time, the industrial miscellaneous salt mixture is added into the intermediate frequency furnace 1 through the feeding port at the top of the intermediate frequency furnace 1, and at the same time, the industrial miscellaneous salt mixture is added to the intermediate frequency furnace 1 through the feeding port at the top of the intermediate frequency furnace 1. Fuel is added to the flue gas outlet 2 of the furnace 1, so that the industrial mixed salt mixture is burned, heated and melted into a glass phase; 3) Start the furnace: Turn on the medium frequency furnace 1 and connect the flue gas outlet 2 to the exhaust gas treatment system at the same time, and start continuously adding the industrial mixed salt mixture to the feeding port at the top of the medium frequency furnace 1. The medium frequency furnace 1 uses the medium frequency electromagnetic induction principle to melt the industrial mixed salt mixture. The glass phase melt formed by the melting is discharged from the discharge port 4 at the bottom end of the medium frequency furnace 1 and then recycled as a raw material for glass production. The exhaust gas generated during the melting process is discharged from the flue gas outlet 2 of the medium frequency furnace 1 and enters the exhaust gas treatment system, and the exhaust gas is treated and then discharged.

[0026] During specific implementation, the exhaust gas treatment system includes a bag dust collector 5, a purification tower 6, a water remover 7, a liquefaction device 8, and a CO2 purification device 9. The exhaust gas discharged from the flue gas outlet 2 of the medium frequency furnace 1 passes through the bag dust collector 5, the purification tower 6, and the water removal equipment in sequence, and the exhaust gas is dusted, purified, and dehydrated, and then cooled by the liquefaction device 8. SO2 is extracted by utilizing the different liquefaction temperatures of SO2 and CO2. The remaining flue gas enters the CO2 purification device 9, and the CO2 purification device adsorbs the remaining SO2 and then extracts CO2.

[0027] Principle description: Industrial miscellaneous salt is added to silica sand and carbon powder to form an industrial miscellaneous salt mixture, which is melted by fuel combustion to form a glass phase melt. Then, the conductive property of the glass phase melt is used to start the medium frequency furnace 1 and use the medium frequency induction principle to melt the industrial miscellaneous salt mixture subsequently added to the medium frequency furnace 1 into a glass phase melt. The melted glass phase melt is discharged from the discharge port 4 of the medium frequency furnace 1. During this period, the industrial miscellaneous salt mixture is continuously added, and the glass phase melt is continuously generated. The medium frequency furnace 1 keeps working and keeps dissolving the subsequently added industrial miscellaneous salt mixture, so that it forms a continuous operation and dissolves the generated glass phase. The melt is then used as a raw material for various glass productions; at the same time, the tail gas generated by the subsequent melting of the industrial salt mixture by heating it according to the medium frequency induction principle is mainly SO2, CO2, and H2O, with a low dust content. Therefore, the tail gas discharged from the flue gas outlet 2 of the medium frequency furnace 1 passes through the bag dust collector 5, the purification tower 6, and the water removal equipment 7 in turn, and the tail gas is dusted, purified, and dehydrated, and then cooled by the liquefaction device 8 and SO2 is extracted by using the different liquefaction temperatures of SO2 and CO2. The remaining flue gas enters the CO2 purification device 9, and the CO2 purification device 9 adsorbs the remaining SO2 and then extracts CO2.

[0028] The above description is only a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Although detailed descriptions have been made with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the embodiments, and they should all be covered by the scope of protection of the claims.

Claims

1. A device for treating industrial salts, characterized in that: The invention comprises an intermediate frequency furnace (1), wherein the furnace top of the intermediate frequency furnace (1) is provided with a flue gas outlet (2), the top portion of the intermediate frequency furnace (1) is provided with a feeding port, the feeding port is sealed and equipped with a spiral feeder (3), the bottom portion of the intermediate frequency furnace (1) is provided with a discharge port (4), the flue gas outlet (2) of the intermediate frequency furnace (1) is connected to an exhaust gas treatment system, the exhaust gas treatment system comprises a bag dust collector (5), a purification tower (6), a dehydrator (7), a liquefaction device (8), and a CO2 purification device (9), the flue gas outlet (2) of the intermediate frequency furnace (1) and the flue gas of the bag dust collector (5) are connected. The inlet is connected, the flue gas outlet (2) of the bag filter (5) is connected to the flue gas inlet of the purification tower (6), the flue gas outlet (2) of the purification tower (6) is connected to the gas inlet of the dehydration equipment, the gas outlet of the dehydration equipment is connected to the gas inlet of the liquefaction device (8), the purification outlet of the liquefaction device (8) is used to extract SO2, the gas outlet of the liquefaction device (8) is connected to the gas inlet of the CO2 purification device (9), the CO2 purification device (9) adsorbs the remaining SO2, and the gas outlet of the CO2 purification device (9) is used to extract CO2.

2. The device for treating industrial salts according to claim 1, wherein: The intermediate frequency furnace (1) has two feeding ports that are symmetrically distributed at the top of the intermediate frequency furnace (1), and both feeding ports are equipped with spiral feeders (3).

3. The device for treating industrial salts according to claim 2, wherein: An L-shaped melt buffer cavity (10) is fixed to the discharge port (4) of the intermediate frequency furnace (1), one end of the L-shaped melt buffer cavity (10) is sealed and connected to the discharge port (4) of the intermediate frequency furnace (1), and the other end of the L-shaped melt buffer cavity (10) is arranged higher than the discharge port (4) of the intermediate frequency furnace (1).

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