Denitration device for mixed acid regeneration tail gas
By introducing preheating pipes and catalytic carriers into the denitrification device, and combining the design of the insulation layer and thermal conduction plate, the problem of energy waste in the existing devices is solved, and efficient exhaust gas denitrification and thermal energy recovery are achieved.
Patent Information
- Application Number
- CN202422578584.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-24
AI Technical Summary
The existing mixed acid regenerated exhaust gas denitrification devices lack preheating functions, resulting in waste of energy and low denitrification efficiency.
A denitrification device including a denitrification tank, a preheating pipe, a heating unit, a preheating plate and a catalytic support is designed. The exhaust gas is preheated through the preheating pipe and denitrogenation is used to use the catalytic support, and the heat utilization efficiency is improved by using the insulation layer and the thermal conduction plate.
It improves denitrification efficiency, reduces resource losses, reduces heating energy consumption, ensures that the catalytic support quickly reaches the reaction temperature, and improves the thermal energy recovery effect.
Smart Images
Figure CN223263654U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of pollution control, and in particular relates to a denitration device for mixed acid regeneration tail gas. Background Art
[0002] Mixed acid regeneration refers to the technology used to treat and reuse waste acid in industrial processes. This process typically includes neutralization, concentration, and recovery steps to reduce the environmental impact of waste and achieve resource recycling.
[0003] The mixed acid regeneration process typically produces waste gas, often containing nitrogen oxides. Direct emission can pollute the atmosphere, so denitrification with a catalyst is typically used to reduce this environmental impact. Catalytic treatment typically requires heating to raise the nitrogen oxides to a redox reaction temperature. However, existing reactors typically lack the ability to preheat the waste gas, resulting in energy waste. Utility Model Content
[0004] The purpose of the embodiments of the present invention is to provide a denitration device for mixed acid regeneration of tail gas, aiming to solve the problems raised in the background technology.
[0005] The embodiment of the present utility model is implemented as follows: a denitration device for mixed acid regeneration tail gas comprises a denitration tank and a denitration component arranged in the denitration tank, the denitration tank comprises an inner tank, an air inlet and an exhaust port, the air inlet and the exhaust port are fixedly mounted on the upper end of the inner tank, the denitration component comprises a reaction unit, a preheating pipe, a heating unit and a preheating plate, the preheating pipe is fixedly mounted on the top end of the inner side of the inner tank and is connected to the air inlet, a preheating plate is fixedly arranged on the outside of the preheating pipe, the reaction unit is fixedly connected to the lower end of the preheating pipe, the heating unit is fixedly mounted on the outside of the preheating pipe, a connecting pipe is fixedly arranged on the lower end of the reaction unit, the lower end of the connecting pipe is fixedly connected to the inner bottom of the inner tank, a plurality of air permeable grooves are fixedly opened on the outside of the connecting pipe, the reaction unit comprises a tank body and a catalytic carrier, and the catalytic carrier is fixedly arranged in the tank body.
[0006] As a further solution of the present invention: the denitrification tank also includes an outer tank and an insulation layer, the outer tank is arranged on the outside of the inner tank, the insulation layer is fixedly arranged between the outer tank and the inner tank, and a plurality of supporting legs are fixedly arranged at the lower end of the outer tank.
[0007] As a further solution of the present invention: the air inlet and the exhaust port are movable through the insulation layer and the outer tank and extend to the outside of the outer tank, and the outer tank is not in contact with the air inlet and the exhaust port.
[0008] As a further solution of the present invention: a plurality of heat conducting plates are fixedly provided on the inner wall of the tank, and the heat conducting plates are inserted into the catalytic carrier.
[0009] As a further solution of the present invention: the heating unit includes a heating wire and a heat preservation ring, and the heating wire is fixedly arranged on the outside of the tank body.
[0010] As a further solution of the present invention: the insulation ring is fixedly installed on the outside of the tank body to cover the heating wire, and connecting wires are provided at both ends of the heating wire. The connecting wires are movable through the denitrification tank and extend to the outside to connect with the power supply equipment.
[0011] As a further solution of the present invention: the preheating plate is configured as a spiral structure, and there is a gap between the outer side of the preheating plate and the inner side of the inner tank.
[0012] The beneficial effects of the present invention are:
[0013] 1. The embodiment of the present invention provides a denitrification device for mixed acid regeneration exhaust gas, which first turns on the heating unit to preheat the preheating tube, introduces exhaust gas into the preheating tube through the provided air inlet, and catalytically treats nitrogen oxides in the exhaust gas through the catalytic carrier to achieve the denitrification effect. The exhaust gas after denitrification is discharged from the connecting pipe into the inner tank, and the heat in the high-temperature exhaust gas is transferred to the low-temperature exhaust gas in the preheating tube through the provided preheating plate, thereby preheating the low-temperature exhaust gas, improving the denitrification efficiency and reducing the loss of resources.
[0014] 2. The embodiment of the present invention provides a denitrification device for mixed acid regeneration tail gas, which insulates the inner tank by providing an insulation layer, thereby reducing heat loss in the inner tank, thereby reducing heating energy consumption and further reducing resource loss.
[0015] 3. The embodiment of the present invention provides a denitrification device for mixed acid regeneration tail gas, which conducts heat through the provided heat conduction plate to improve the thermal conductivity efficiency, ensure that the catalytic carrier quickly reaches the reaction temperature, reduce the impact of low-temperature exhaust gas on the catalytic carrier, and further improve the denitrification efficiency.
[0016] 4. The embodiment of the present invention provides a denitrification device for mixed acid regeneration tail gas, which covers the tank body with an insulation ring to ensure that the heat of the heating wire is fully absorbed by the reaction unit, thereby preventing the heating wire from heating the exhaust gas and causing unnecessary energy loss.
[0017] 5. The embodiment of the utility model provides a denitrification device for mixed acid regeneration exhaust gas, which delays the emission of high-temperature exhaust gas through a spirally arranged preheating plate, thereby ensuring that the high-temperature exhaust gas can fully preheat the low-temperature exhaust gas in the preheating pipe, thereby improving the recovery effect of heat energy in the high-temperature exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] FIG1 is a three-dimensional structural diagram of a denitration device for mixed acid regeneration of tail gas provided by an embodiment of the present utility model;
[0019] Figure 2 A cross-section of a denitrification device for mixed acid regeneration tail gas provided in an embodiment of the utility model Figure 1 ;
[0020] Figure 3 A cross-section of a denitrification device for mixed acid regeneration tail gas provided in an embodiment of the utility model Figure 2 .
[0021] In the accompanying drawings: denitrification tank 1, outer tank 11, supporting legs 12, insulation layer 13, inner tank 14, air inlet 15, exhaust port 16, denitrification component 2, reaction unit 21, tank body 211, catalytic carrier 212, heat conducting plate 213, preheating tube 22, heating unit 23, heating wire 231, connecting wire 232, insulation ring 233, connecting pipe 24, air permeable groove 241, preheating plate 25. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0023] The specific implementation of the present invention is described in detail below with reference to specific embodiments.
[0024] As shown in Figure 1 to Figure 3 As shown, a denitration device for mixed acid regeneration tail gas provided by an embodiment of the present invention includes a denitration tank 1 and a denitration component 2 arranged in the denitration tank 1, the denitration tank 1 includes an inner tank 14, an air inlet 15 and an exhaust port 16, the air inlet 15 and the exhaust port 16 are fixedly mounted on the upper end of the inner tank 14, the denitration component 2 includes a reaction unit 21, a preheating pipe 22, a heating unit 23 and a preheating plate 25, the preheating pipe 22 is fixedly mounted on the inner top of the inner tank 14 and is connected to the air inlet 15, A preheating plate 25 is fixedly provided on the outside of the preheating tube 22, the reaction unit 21 is fixedly connected to the lower end of the preheating tube 22, the heating unit 23 is fixedly installed on the outside of the preheating tube 22, a connecting pipe 24 is fixedly provided on the lower end of the reaction unit 21, the lower end of the connecting pipe 24 is fixedly connected to the inner bottom of the inner tank 14, and a plurality of air-permeable grooves 241 are fixedly opened on the outside of the connecting pipe 24. The reaction unit 21 includes a tank body 211 and a catalytic carrier 212, and the catalytic carrier 212 is fixedly provided in the tank body 211.
[0025] In one embodiment of the present invention, the heating unit 23 is first turned on to preheat the preheating tube 22, and the exhaust gas is introduced into the preheating tube 22 through the provided air inlet 15. The nitrogen oxides in the exhaust gas are catalytically treated by the catalytic carrier 212 to achieve the effect of denitrification. The exhaust gas after denitrification is discharged from the connecting pipe 24 into the inner tank 14, and the heat in the high-temperature exhaust gas is transferred to the low-temperature exhaust gas in the preheating tube 22 through the provided preheating plate 25, thereby preheating the low-temperature exhaust gas, improving the denitrification efficiency and reducing the loss of resources.
[0026] like Figure 2 As shown, as another embodiment of the present invention, the denitrification tank 1 also includes an outer tank 11 and an insulation layer 13. The outer tank 11 is arranged on the outside of the inner tank 14. The insulation layer 13 is fixedly arranged between the outer tank 11 and the inner tank 14. A plurality of supporting legs 12 are fixedly arranged at the lower end of the outer tank 11.
[0027] Specifically, the air inlet 15 and the air outlet 16 are movable through the insulation layer 13 and the outer tank 11 and extend to the outside of the outer tank 11 , and the outer tank 11 is not in contact with the air inlet 15 and the air outlet 16 .
[0028] In one embodiment of the present invention, the inner tank 14 is insulated by the provided insulation layer 13, thereby reducing the heat loss in the inner tank 14, thereby reducing heating energy consumption and further reducing resource loss.
[0029] As shown Figure 3 As shown, as another embodiment of the present invention, a plurality of heat conducting plates 213 are fixedly provided on the inner wall of the tank body 211, and the heat conducting plates 213 are inserted into the catalytic carrier 212.
[0030] In one embodiment of the present invention, heat is conducted by the provided heat conducting plate 213 to improve the heat conduction efficiency, ensure that the catalytic carrier 212 quickly reaches the reaction temperature, reduce the impact of low-temperature exhaust gas on the catalytic carrier 212, and further improve the denitrification efficiency.
[0031] like Figure 2 As shown, as another embodiment of the present invention, the heating unit 23 includes a heating wire 231 and a heat preservation ring 233, and the heating wire 231 is fixedly arranged on the outside of the tank body 211.
[0032] Specifically, the insulation ring 233 is fixedly installed on the outside of the tank body 211 to cover the heating wire 231. Connecting wires 232 are provided at both ends of the heating wire 231. The connecting wires 232 are movable through the denitrification tank 1 and extend to the outside to connect with the power supply equipment.
[0033] In one embodiment of the present invention, the insulation ring 233 covers the tank body 211 to ensure that the heat of the heating wire 231 is fully absorbed by the reaction unit 21, thereby preventing the heating wire 231 from heating the exhaust gas and causing unnecessary energy loss.
[0034] like Figure 2 As shown, as another embodiment of the present invention, the preheating plate 25 is configured as a spiral structure, and there is a gap between the outer side of the preheating plate 25 and the inner side of the inner tank 14.
[0035] In one embodiment of the present invention, the spirally arranged preheating plate 25 is used to delay the discharge of high-temperature exhaust gas, thereby ensuring that the high-temperature exhaust gas can fully preheat the low-temperature exhaust gas in the preheating tube 22, thereby improving the recovery effect of heat energy in the high-temperature exhaust gas.
[0036] 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 embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.
[0037] 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.
[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.
[0039] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.
[0040] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. A denitration device for mixed acid regeneration tail gas, comprising a denitration tank (1) and a denitration assembly (2) arranged in the denitration tank (1), characterized in that: The denitration tank (1) comprises an inner tank (14), an air inlet (15) and an exhaust port (16), wherein the air inlet (15) and the exhaust port (16) are fixedly mounted on the upper end of the inner tank (14); the denitration assembly (2) comprises a reaction unit (21), a preheating pipe (22), a heating unit (23) and a preheating plate (25), wherein the preheating pipe (22) is fixedly mounted on the top end of the inner side of the inner tank (14) and communicates with the air inlet (15), and a preheating plate (25) is fixedly arranged on the outer side of the preheating pipe (22). 21) is fixedly connected to the lower end of the preheating tube (22), the heating unit (23) is fixedly installed on the outside of the preheating tube (22), the lower end of the reaction unit (21) is fixedly provided with a connecting pipe (24), the lower end of the connecting pipe (24) is fixedly connected to the inner bottom of the inner tank (14), and a plurality of air-permeable grooves (241) are fixedly opened on the outside of the connecting pipe (24), the reaction unit (21) includes a tank body (211) and a catalytic carrier (212), and the catalytic carrier (212) is fixedly provided in the tank body (211).
2. A denitration device for mixed acid regeneration tail gas according to claim 1, characterized in that: The denitration tank (1) further comprises an outer tank (11) and a heat-insulating layer (13); the outer tank (11) is arranged outside the inner tank (14); the heat-insulating layer (13) is fixedly arranged between the outer tank (11) and the inner tank (14); and a plurality of supporting legs (12) are fixedly arranged at the lower end of the outer tank (11).
3. A denitration device for mixed acid regeneration tail gas according to claim 2, characterized in that: The air inlet (15) and the air outlet (16) are movable through the insulation layer (13) and the outer tank (11) and extend to the outside of the outer tank (11); the outer tank (11) is not in contact with the air inlet (15) and the air outlet (16).
4. A denitration device for mixed acid regeneration tail gas according to claim 1, characterized in that: A plurality of heat conducting plates (213) are fixedly arranged on the inner wall of the tank body (211), and the heat conducting plates (213) are inserted into the catalytic carrier (212).
5. The denitration device for mixed acid regeneration tail gas according to claim 1, characterized in that: The heating unit (23) comprises a heating wire (231) and a heat-insulating ring (233), and the heating wire (231) is fixedly arranged on the outside of the tank body (211).
6. A denitration device for mixed acid regeneration tail gas according to claim 5, characterized in that: The insulation ring (233) is fixedly mounted on the outside of the tank body (211) to cover the heating wire (231). Connecting wires (232) are provided at both ends of the heating wire (231). The connecting wires (232) are movably passed through the denitration tank (1) and extended to the outside to connect with the power supply equipment.
7. The denitration device for mixed acid regeneration tail gas according to claim 1, characterized in that: The preheating plate (25) is configured as a spiral structure, and a gap exists between the outer side of the preheating plate (25) and the inner side of the inner tank (14).