Device for effectively reducing content of thiourea in high-temperature waste gas

Abstract

The utility model is applicable to the field of thiourea production, and provides a device for effectively reducing the content of thiourea in high-temperature waste gas, which comprises a treatment box, a treatment assembly and a heat storage assembly, the heat storage assembly comprises a heat storage box, a plurality of heat pipes and a plurality of heat conducting plates II, one ends of the plurality of heat pipes penetrate through the side wall of a treatment tank and are positioned in the treatment tank, and the other ends of the plurality of heat conducting plates II are positioned in the treatment tank. The other end of the heat pipe penetrates through the side wall of the heat storage box and is located in the heat storage box, the multiple second heat conduction plates are located in the heat storage box and fixedly installed at one end of the heat pipe, high-temperature waste gas with a small amount of thiourea is discharged into the treatment tank through the formed gas inlet, and the thiourea is treated through the high specific heat capacity of water and the thiourea dissolving effect. Thiourea can be dissolved and recycled while waste gas is cooled, heat of water is conducted into a heat storage box through a heat pipe, heat conduction is assisted through a second heat conduction plate, the heat is stored into a phase change material, and therefore heat recycling is completed.

Description

Technical Field

[0001] This utility model belongs to the field of thiourea production, and in particular relates to a device for effectively reducing the thiourea content in high-temperature exhaust gas. Background Technology

[0002] Thiourea is an important organic chemical widely used in pharmaceuticals, pesticides, dyes, rubber, and other fields. In industrial production, it is usually produced by reacting hydrogen sulfide with lime slurry to form calcium hydrosulfide, which is then reacted with calcium cyanamide. Alternatively, it can be produced by melting ammonium thiocyanate or by reacting aminocyanide with hydrogen sulfide.

[0003] In the production and processing of thiourea, high-temperature waste gas is usually unavoidably generated. When the high-temperature waste gas is emitted, it carries a small amount of thiourea. Direct emission may cause environmental pollution. At the same time, the high-temperature waste gas contains a large amount of heat energy. If it is not recovered and utilized, this heat energy will be wasted, resulting in energy waste. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a device for effectively reducing the thiourea content in high-temperature exhaust gas, aiming to solve the problems mentioned in the background art.

[0005] This utility model embodiment is implemented as follows: A device for effectively reducing the thiourea content in high-temperature exhaust gas includes a treatment box, a treatment component, and a heat storage component. The treatment box includes an outer casing, and the treatment component and the heat storage component are both located inside the outer casing. The treatment component includes a treatment tank, a motor, a connecting shaft, and an exhaust hood. A water inlet, a drain outlet, and an air inlet are fixedly provided on the outside of the treatment tank. One end of each of the water inlet, drain outlet, and air inlet penetrates the side wall of the outer casing and extends to the outside. The other end of the air inlet penetrates the side wall of the outer casing and extends to the middle of the treatment tank and is located at the exhaust hood. At the lower end of the gas hood, a recovery cover is fixedly installed at the upper end of the processing tank corresponding to the motor. The motor is fixedly installed on the recovery cover. The connecting shaft is fixedly connected to the main shaft of the motor. The exhaust hood is fixedly installed at the lower end of the connecting shaft. The heat storage component includes a heat storage box, multiple heat pipes, and multiple heat-conducting plates. The heat storage box is filled with phase change energy storage material. One end of each heat pipe penetrates the side wall of the processing tank and is located inside the processing tank. The other end of each heat pipe penetrates the side wall of the heat storage box and is located inside the heat storage box. The multiple heat-conducting plates are located inside the heat storage box and are fixedly installed at one end of the heat pipe.

[0006] As a further embodiment of this utility model: an insulation layer is filled between the outer casing, the processing tank and the heat storage box.

[0007] As a further embodiment of this utility model: an installation plate is fixedly provided on the upper end of the processing tank, the installation plate is configured as a funnel structure, and an exhaust port is fixedly installed on the upper end of the installation plate.

[0008] As a further embodiment of this utility model: a stirring rod is fixedly installed on the outside of the connecting shaft, the stirring rod is configured as a "U"-shaped structure, and a spiral heat-conducting plate is fixedly installed on the side of the air inlet.

[0009] As a further embodiment of this utility model: the exhaust hood is configured as a bell-shaped structure, the inner diameter of the exhaust hood is larger than the outer diameter of the air inlet, and the water level in the treatment tank is between the lowest point of the exhaust hood and the highest point of the air inlet.

[0010] As a further embodiment of this invention: the heat pipe is made of metal and is filled with a low-temperature phase change liquid.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. This utility model provides an effective device for reducing the thiourea content in high-temperature exhaust gas. Through the set air inlet, high-temperature exhaust gas containing a small amount of thiourea is discharged into the treatment tank. Utilizing the high specific heat capacity of water and its dissolving effect on thiourea, the exhaust gas is cooled while the thiourea is dissolved and recovered. The set heat pipe conducts the heat of the water to the heat storage box, and the heat is further conducted by the heat conduction plate to store the heat in the phase change material, thereby completing the heat recovery.

[0013] 2. The present invention provides an effective device for reducing the thiourea content in high-temperature exhaust gas. When the treated exhaust gas is discharged, the water absorbs heat from the exhaust gas, resulting in an increase in water temperature and an increase in the evaporation of warm water, which in turn increases the water vapor content in the exhaust gas. Through the installation plate, the water vapor is easily condensed on the inner wall of the installation plate and slides back into the treatment tank, reducing water loss.

[0014] 3. The present invention provides an effective device for reducing the thiourea content in high-temperature exhaust gas. During exhaust gas treatment, a motor is started to drive the stirring rod to rotate, thereby stirring the liquid in the treatment tank, which facilitates heat balance. The spiral heat-conducting plate not only conducts heat but also indirectly improves the stirring effect of the stirring rod.

[0015] 4. The present invention provides an effective device for reducing the thiourea content in high-temperature exhaust gas. By setting an exhaust hood to cover the end of the air inlet, when the high-temperature exhaust gas enters the treatment component, the heat is first introduced into the water in the treatment tank through the outer wall of the air inlet and the heat conduction plate to prevent the water from boiling locally due to a sudden increase in temperature. Then, it is slowly discharged into the water through the guidance of the exhaust hood. The exhaust hood ensures that air is always present inside the exhaust hood, which can prevent liquid from flowing back into the air inlet. Attached Figure Description

[0016] Figure 1A three-dimensional structural diagram of a device for effectively reducing the thiourea content in high-temperature exhaust gas, provided for an embodiment of this utility model;

[0017] Figure 2 A cross-sectional view of a device for effectively reducing the thiourea content in high-temperature exhaust gas, provided as an embodiment of this utility model;

[0018] Figure 3 This is a partial cross-sectional view of the treatment components and heat storage components of a device for effectively reducing the thiourea content in high-temperature exhaust gas, provided in an embodiment of this utility model.

[0019] In the attached diagram: processing box 1, outer box 11, insulation layer 12, processing component 2, processing tank 21, mounting plate 211, recovery cover 212, water inlet 22, drain outlet 23, air inlet 24, heat conduction plate 1 241, exhaust outlet 25, motor 26, connecting shaft 27, stirring rod 28, exhaust hood 29, heat storage component 3, heat storage box 31, heat pipe 32, heat conduction plate 2 33. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0022] like Figures 1 to 3As shown in the figure, an embodiment of the present invention provides a device for effectively reducing the thiourea content in high-temperature exhaust gas, including a treatment box 1, a treatment component 2, and a heat storage component 3. The treatment box 1 includes an outer casing 11, and the treatment component 2 and the heat storage component 3 are both located inside the outer casing 11. The treatment component 2 includes a treatment tank 21, a motor 26, a connecting shaft 27, and an exhaust hood 29. A water inlet 22, a drain outlet 23, and an air inlet 24 are fixedly provided on the outside of the treatment tank 21. One end of the water inlet 22, the drain outlet 23, and the air inlet 24 penetrates through the side wall of the outer casing 11 and extends to the outside. The other end of the air inlet 24 penetrates through the side wall of the outer casing 11 and extends to the middle of the treatment tank 21 and is located in the exhaust hood 29. At the lower end of the 9, a recovery cover 212 is fixedly installed on the upper end of the processing tank 21 corresponding to the motor 26. The motor 26 is fixedly installed on the recovery cover 212. The connecting shaft 27 is fixedly connected to the main shaft of the motor 26. The exhaust hood 29 is fixedly installed at the lower end of the connecting shaft 27. The heat storage component 3 includes a heat storage box 31, multiple heat pipes 32 and multiple heat-conducting plates 33. The heat storage box 31 is filled with phase change energy storage material. One end of each heat pipe 32 penetrates the side wall of the processing tank 21 and is located inside the processing tank 21. The other end of each heat pipe 32 penetrates the side wall of the heat storage box 31 and is located inside the heat storage box 31. The multiple heat-conducting plates 33 are located inside the heat storage box 31 and are fixedly installed on one end of each heat pipe 32.

[0023] In one embodiment of this utility model, high-temperature exhaust gas containing a small amount of thiourea is discharged into the treatment tank 21 through the air inlet 24. The high specific heat capacity of water and its dissolving effect on thiourea are used to cool the exhaust gas while dissolving and recovering the thiourea. The heat pipe 32 conducts the heat of the water to the heat storage box 31, and the heat conduction plate 33 assists in the heat conduction, storing the heat in the phase change material, thereby completing the heat recovery.

[0024] like Figure 2 As shown, in another embodiment of the present invention, an insulation layer 12 is filled between the outer casing 11, the processing tank 21 and the heat storage box 31.

[0025] In one embodiment of this utility model, the heat insulation layer 12 can be used to keep the processing tank 21 and the heat storage box 31 warm, reduce heat loss, and facilitate the heat storage component 3 to store and recover heat.

[0026] like Figure 2 and Figure 3 As shown, in another embodiment of the present invention, the upper end of the processing tank 21 is fixedly provided with an installation plate 211, the installation plate 211 is configured as a funnel structure, and an exhaust port 25 is fixedly installed on the upper end of the installation plate 211.

[0027] In one embodiment of this utility model, when the treated exhaust gas is discharged, the water absorbs heat from the exhaust gas, causing the water temperature to rise and the evaporation of warm water to increase, thereby increasing the water vapor content in the exhaust gas. Through the installation plate 211, the water vapor can easily condense on the inner wall of the installation plate 211 and slide back into the treatment tank 21, reducing water loss.

[0028] like Figure 2 and Figure 3 As shown, in another embodiment of this utility model, a stirring rod 28 is fixedly installed on the outside of the connecting shaft 27. The stirring rod 28 is configured with a "U"-shaped structure, and a spiral heat-conducting plate 241 is fixedly installed on the side of the air inlet 24.

[0029] In one embodiment of this utility model, during waste gas treatment, the motor 26 is started to drive the stirring rod 28 to rotate, thereby stirring the liquid in the treatment tank 21, which facilitates heat balance. The spiral heat-conducting plate 241 not only conducts heat, but also indirectly improves the stirring effect of the stirring rod 28.

[0030] like Figure 2 and Figure 3 As shown, in another embodiment of the present invention, the exhaust hood 29 is configured as a bell-shaped structure, the inner diameter of the exhaust hood 29 is larger than the outer diameter of the air inlet 24, and the water level in the treatment tank 21 is between the lowest position of the exhaust hood 29 and the highest position of the air inlet 24.

[0031] In one embodiment of this utility model, the exhaust hood 29 is provided to cover the end of the air inlet 24. When the high-temperature exhaust gas enters the treatment component 2, the heat is first introduced into the water in the treatment tank 21 through the outer wall of the air inlet 24 and the heat conduction plate 241 to prevent the water from boiling locally due to a sudden increase in temperature. Then, it is slowly discharged into the water through the guidance of the exhaust hood 29. The exhaust hood 29 ensures that there is always air inside it, which can prevent liquid from flowing back into the air inlet 24.

[0032] like Figure 3 As shown, in another embodiment of this utility model, the heat pipe 32 is made of metal and is filled with a low-temperature phase change liquid.

[0033] In one embodiment of this invention, when a section of the heat pipe 32 located inside the processing tank 21 (evaporation section) is heated, the low-temperature phase change liquid (working fluid) inside the pipe begins to evaporate and vaporize. The evaporated vapor flows to a section located inside the heat storage tank 31 (condensation section) under the action of an accelerating pressure difference. In the condensation section, the vapor releases heat and condenses into liquid. The condensed liquid returns to the evaporation section via capillary action of the wick inside the pipe, completing one cycle. This process is repeated continuously, thereby achieving a continuous transfer of heat from the processing tank 21 to the heat storage tank 31.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0036] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for effectively reducing the thiourea content in high-temperature exhaust gas, comprising a treatment chamber (1), a treatment component (2), and a heat storage component (3), characterized in that, The processing box (1) includes an outer box (11). The processing component (2) and the heat storage component (3) are both located inside the outer box (11). The processing component (2) includes a processing tank (21), a motor (26), a connecting shaft (27), and an exhaust hood (29). A water inlet (22), a drain outlet (23), and an air inlet (24) are fixedly provided on the outside of the processing tank (21). One end of the water inlet (22), the drain outlet (23), and the air inlet (24) penetrates the side wall of the outer box (11) and extends to the outside. The other end of the air inlet (24) penetrates the side wall of the outer box (11) and extends to the middle of the processing tank (21) and is located at the lower end of the exhaust hood (29). A return valve is fixedly provided on the upper end of the processing tank (21) corresponding to the motor (26). The cover (212) is closed, the motor (26) is fixedly installed on the cover (212), the connecting shaft (27) is fixedly connected to the main shaft of the motor (26), the exhaust hood (29) is fixedly installed at the lower end of the connecting shaft (27), the heat storage component (3) includes a heat storage box (31), multiple heat pipes (32) and multiple heat-conducting plates (33), the heat storage box (31) is filled with phase change energy storage material, one end of the multiple heat pipes (32) penetrates the side wall of the processing tank (21) and is located inside the processing tank (21), the other end of the heat pipes (32) penetrates the side wall of the heat storage box (31) and is located inside the heat storage box (31), and multiple heat-conducting plates (33) are located inside the heat storage box (31) and are fixedly installed at one end of the heat pipes (32).

2. The device for effectively reducing the thiourea content in high-temperature exhaust gas according to claim 1, characterized in that, An insulation layer (12) is filled between the outer casing (11), the processing tank (21), and the heat storage box (31).

3. The device for effectively reducing the thiourea content in high-temperature exhaust gas according to claim 1, characterized in that, The upper end of the processing tank (21) is fixedly provided with an installation plate (211), the installation plate (211) is configured as a funnel structure, and an exhaust port (25) is fixedly installed on the upper end of the installation plate (211).

4. The device for effectively reducing the thiourea content in high-temperature exhaust gas according to claim 3, characterized in that, A stirring rod (28) is fixedly installed on the outside of the connecting shaft (27). The stirring rod (28) is configured as a "U" shaped structure. A spiral heat-conducting plate (241) is fixedly installed on the side of the air inlet (24).

5. The device for effectively reducing the thiourea content in high-temperature exhaust gas according to claim 4, characterized in that, The exhaust hood (29) is configured as a bell-shaped structure, the inner diameter of the exhaust hood (29) is larger than the outer diameter of the air inlet (24), and the water level in the treatment tank (21) is between the lowest position of the exhaust hood (29) and the highest position of the air inlet (24).

6. The device for effectively reducing the thiourea content in high-temperature exhaust gas according to claim 1, characterized in that, The heat pipe (32) is made of metal and is filled with a low-temperature phase change liquid.

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