Waste gas purification device for garbage and sludge co-incineration
By designing a combination of connecting pipes, diversion channels, and impellers, uniform distribution and thorough mixing of powder in the exhaust gas were achieved, solving the problems of small powder spray range and insufficient mixing, and improving the exhaust gas purification effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIYANG WASTE HEAT POWER GENERATION CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-24
AI Technical Summary
In existing waste and sludge co-incineration exhaust gas purification devices, the powder injection range is small and the mixing is insufficient, resulting in poor exhaust gas treatment effect.
A device including a connecting pipe, a diversion channel, an impeller, and a guide plate was designed. The device drives the powder to be evenly distributed in the exhaust gas through a rotating shaft and uses a grinding plate to process large particles of powder to achieve thorough mixing.
It significantly increases the spraying and dispersing range and mixing effect of powder, avoids clogging by large powder particles, and improves the exhaust gas treatment effect.
Smart Images
Figure CN224541410U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of incineration exhaust gas purification devices, specifically to an exhaust gas purification device for co-incineration of waste and sludge. Background Technology
[0002] Co-incineration of waste and sludge refers to a process in which two different types of waste, municipal solid waste and municipal sludge, are fed into the same incinerator for high-temperature combustion and energy recovery. This process allows the high-calorific-value waste and the high-moisture-content sludge to complement each other and improve combustion conditions.
[0003] In the process of treating waste and sludge incineration exhaust gas, powders such as quicklime and activated carbon are generally injected into the pipeline to further neutralize acidic gases and adsorb heavy metals and dioxins. Existing powder spraying equipment generally directly injects quicklime and activated carbon powder into the pipeline, with a small spray range, and relies solely on the flow of exhaust gas to complete the mixing of quicklime and activated carbon powder with the exhaust gas, which may result in insufficient mixing and reduce the treatment effect of exhaust gas. Utility Model Content
[0004] Therefore, the technical problem to be solved by this utility model is to provide a waste gas purification device for co-incineration of waste and sludge, which can greatly increase the spraying and distribution range of powder, and perform a certain degree of stirring treatment on waste gas and powder, so that waste gas and powder are fully mixed and the waste gas treatment effect is improved.
[0005] To address the aforementioned issues, this utility model provides a waste gas purification device for co-incineration of waste and sludge, comprising: a connecting pipe, with a rotating shaft installed in the opening at one end, and a connecting piece installed at one end of the rotating shaft for injecting powder into the rotating shaft and for rotating connection between one end of the rotating shaft and the connecting pipe.
[0006] The flow divider is located at one end of the rotating shaft. A grinding plate is fixedly installed on its inner wall, and a second grinding plate is provided on the side of the grinding plate away from the impeller.
[0007] Several discharge holes are opened on the outer peripheral wall of the rotating shaft, and their interiors are connected to the interiors of the diversion channel through an annular groove;
[0008] The impeller is fixedly mounted on the other end of the rotating shaft, and the impeller is rotatably connected to the connecting pipe through a support.
[0009] Preferably, a guide plate is fixedly installed inside the opening at the other end of the connecting pipe, and the guide plate is spirally arranged.
[0010] Preferably, the connector includes a feed pipe, one end of which is fixedly inserted through the wall of the connecting pipe, and the other end of which is fixedly fitted with a support rod. The support rod is rotatably connected to the inner wall of the opening of the diversion groove through a bearing. The second grinding plate is fixedly connected to the support rod, and the other end of the feed pipe passes through the second grinding plate.
[0011] Preferably, the middle part of the diversion groove is truncated cone-shaped, and the middle part of the first grinding plate is inclined with bulges rising from all sides towards the impeller.
[0012] Preferably, the discharge holes are divided into several groups and arranged at equal intervals on the outer peripheral wall of the rotating shaft, and the discharge holes in adjacent groups are staggered.
[0013] Preferably, the support member includes a round rod, which is rotatably mounted on the axis of the impeller via a bearing, and the round rod is fixedly connected to the connecting pipe via a connecting plate, wherein the cross-sectional shape of the connecting plate is triangular.
[0014] This utility model has at least the following beneficial effects:
[0015] 1. When this improved exhaust gas purification device is in use, the rotating shaft is driven by the flowing exhaust gas, thereby continuously adjusting the position of the discharge hole to greatly increase the spraying and distribution range of the powder, so that the powder is more evenly distributed in the exhaust gas. Then, due to the constraint and limitation of the guide plate, the exhaust gas carries the powder in a spiral trajectory to carry out the mixing treatment of exhaust gas and powder, and finally the exhaust gas and powder are fully mixed, improving the treatment effect of exhaust gas.
[0016] 2. When this improved waste gas purification device is in use, the powder injected into the waste gas will first move in with the airflow between grinding plate one and grinding plate two. Larger particles or agglomerated powder will be trapped between grinding plate one and grinding plate two and come into contact with each other. Thus, the rotating shaft will drive grinding plate one to rotate and cooperate with grinding plate two to complete the grinding of larger particles or agglomerated powder, so as to avoid the powder particles being too large to block the discharge hole and to avoid the powder particles being too large to affect the waste gas treatment effect. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a perspective view of the overall structure of this utility model;
[0019] Figure 2This is a front view of the internal structure of part of the connecting pipe of this utility model;
[0020] Figure 3 This is a perspective view of the rotating shaft and impeller of this utility model;
[0021] Figure 4 This is a perspective view of the internal structure of the rotating shaft and impeller of this utility model;
[0022] Figure 5 This is a front view of the internal structure of the support rod and part of the rotating shaft of this utility model.
[0023] The reference numerals in the attached figures are as follows:
[0024] 1. Connecting pipe; 2. Rotating shaft; 3. Connecting piece; 31. Feed pipe; 32. Support rod; 4. Diverter groove; 5. Grinding plate one; 6. Grinding plate two; 7. Impeller; 8. Support piece; 81. Round rod; 82. Connecting plate; 9. Discharge hole; 10. Annular groove; 11. Guide plate. Detailed Implementation
[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 this utility model and simplifying the description, and are not intended to 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.
[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 according to the specific circumstances.
[0028] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0029] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, according to an embodiment of the present invention, a waste gas purification device for co-incineration of waste and sludge is provided, comprising: a connecting pipe 1, a rotating shaft 2 provided in the opening at one end of the connecting pipe 1, and a connecting member 3 provided at one end of the rotating shaft 2 for injecting powder into the rotating shaft 2 and for rotating connection between one end of the rotating shaft 2 and the connecting pipe 1.
[0030] The flow divider 4 is located at one end of the rotating shaft 2. A grinding plate 5 is fixedly installed on its inner wall, and a grinding plate 6 is provided on the side of the grinding plate 5 away from the impeller 7.
[0031] Several discharge holes 9 are opened on the outer peripheral wall of the rotating shaft 2, and their interiors are connected to the interior of the diversion channel 4 through the annular groove 10.
[0032] Impeller 7 is fixedly mounted on the other end of rotating shaft 2, and impeller 7 is rotatably connected to connecting pipe 1 through support member 8.
[0033] A guide plate 11 is fixedly installed inside the opening at the other end of the connecting pipe 1, and the guide plate 11 is spirally arranged.
[0034] In this embodiment, (connecting pipe 1 is installed between the sludge co-incineration exhaust gas transport pipeline), please refer to... Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, when this improved exhaust gas purification device is in use, the exhaust gas flows into the connecting pipe 1 through the pipeline (the exhaust gas flowing into the connecting pipe 1 is exhaust gas that has been treated with nitrogen oxides and acid gas). The gas mixed with powder is injected into the diversion tank 4 through the connecting part 3 (the connecting part 3 is connected to the existing powder injection equipment through the guide pipe, and the powder is quicklime and activated carbon powder). Then, it passes through the gap between the grinding plate 1 5 and the grinding plate 2 6 and the annular groove 10 and is discharged into the exhaust gas through several discharge holes 9.
[0035] When the exhaust gas flows to the position of the impeller 7, the impeller 7 can continuously apply an axial pushing force to the rotating shaft 2. Due to the support of the connecting part 3 and the support part 8 on the rotating shaft 2 and the impeller 7, the rotating shaft 2 rotates rapidly at the axial position of the connecting pipe 1, thereby continuously changing the position of the discharge hole 9 to increase the distribution area of the powder in the exhaust gas.
[0036] When larger particles or agglomerated powder move between grinding plate 5 and grinding plate 6, the larger particles or agglomerated powder come into contact with grinding plate 5 and grinding plate 6 due to the push of the airflow flowing into the annular groove 10. The larger particles or agglomerated powder are ground by the rotating grinding plate 5 in conjunction with grinding plate 6, so as to ensure that the powder discharged from the discharge hole 9 is smaller.
[0037] After the powder is dispersed in the exhaust gas, the powder flows together with the exhaust gas in the connecting pipe 1. Due to the constraint of the exhaust gas by the guide plate 11, the mixed gas of exhaust gas and powder flows in a spiral trajectory. Finally, the mixed gas flows through the connecting pipe 1 into the pipeline to continue flowing. The pipeline guides the mixed gas to the subsequent exhaust gas treatment equipment for further treatment of the exhaust gas.
[0038] In summary, when this improved exhaust gas purification device is in use, the rotating shaft 2 is driven to rotate by the flowing exhaust gas, thereby continuously adjusting the position of the discharge hole 9 to greatly increase the spraying and dispersing range of the powder, so that the powder is more evenly distributed in the exhaust gas. Subsequently, due to the constraint and limitation of the guide plate 11, the exhaust gas carries the powder in a spiral trajectory to carry out the mixing treatment of exhaust gas and powder, and finally the exhaust gas and powder are fully mixed, improving the treatment effect of exhaust gas.
[0039] The powder injected into the exhaust gas will first move in with the airflow between grinding plate 5 and grinding plate 6. Larger particles or agglomerated powder will be trapped between grinding plate 5 and grinding plate 6 and come into contact with each other. The rotating shaft 2 will drive grinding plate 5 to rotate and work with grinding plate 6 to complete the grinding of larger particles or agglomerated powder. This will prevent the powder particles from being too large and clogging the discharge hole 9, and will also prevent the powder particles from being too large and affecting the exhaust gas treatment effect.
[0040] In a further preferred embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the connector 3 includes a feed pipe 31, one end of which is fixedly inserted through the wall of the connecting pipe 1, and the other end of which is fixedly fitted with a support rod 32. The support rod 32 is rotatably connected to the inner wall of the opening of the diversion groove 4 through a bearing. The grinding plate 2 6 is fixedly connected to the support rod 32, and the other end of the feed pipe 31 passes through the grinding plate 2 6.
[0041] In this embodiment, please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, during the rotation of the rotating shaft 2, the feed pipe 31 and the support rod 32 are stably supported by one end of the support rod 32, so that the rotating shaft 2 can rotate stably at the axial position of the connecting pipe 1.
[0042] The airflow carrying the powder is guided by the feed pipe 31 through the support rod 32 and the second grinding plate 6 into the diversion groove 4, and then diffuses to the surrounding area between the first grinding plate 5 and the second grinding plate 6. Finally, it passes through the annular groove 10 and is discharged from several discharge holes 9.
[0043] In a further preferred embodiment of this utility model, such as Figure 4 and Figure 5 As shown, the middle part of the flow divider 4 is truncated cone-shaped, and the middle part of the grinding plate 5 is inclined with the surrounding edges raised towards the impeller 7.
[0044] In this embodiment, please refer to Figure 4 and Figure 5 As shown, the frustum-shaped arrangement in the middle of the diversion channel 4 and the inclined arrangement of the first grinding plate 5 allow the gap between the first grinding plate 5 and the second grinding plate 6 to gradually decrease from the center to the periphery, thereby enabling the first grinding plate 5 and the second grinding plate 6 to accommodate more and larger powder particles of clinker.
[0045] In a further preferred embodiment of this utility model, such as Figure 2 , Figure 3 and Figure 4 As shown, several discharge holes 9 are divided into several groups and are arranged at equal intervals on the outer peripheral wall of the rotating shaft 2, and the discharge holes 9 in adjacent groups are staggered.
[0046] In this embodiment, please refer to Figure 2 , Figure 3 and Figure 4 As shown, several sets of staggered discharge holes 9 allow the powder discharged from the discharge holes 9 to be quickly distributed in the space between the rotating shaft 2 and the connecting pipe 1, so that the powder in the flue gas is more evenly distributed.
[0047] In a further preferred embodiment of this utility model, such as Figure 2 , Figure 3 and Figure 4 As shown, the support member 8 includes a round rod 81, which is rotatably mounted on the shaft of the impeller 7 via a bearing, and the round rod 81 is fixedly connected to the connecting pipe 1 via a connecting plate 82. The cross-sectional shape of the connecting plate 82 is triangular.
[0048] In this embodiment, please refer to Figure 2 , Figure 3 and Figure 4As shown, during the rotation of the shaft 2, the impeller 7 and the other end of the shaft 2 are supported by the connecting plate 82 and the round rod 81, so that the shaft 2 rotates stably at the axial position of the connecting pipe 1. The connecting plate 82, which has a triangular cross-sectional shape, allows the exhaust gas to be divided into two parts along the inclined surface of the connecting plate 82 when it flows to the position of the connecting pipe 1, so that the exhaust gas can quickly bypass the connecting plate 82.
[0049] Working principle: When this improved exhaust gas purification device is in use, gas mixed with powder is injected into the connecting pipe 1 through the feed pipe 31. Then, with the flow of gas, the powder passes through the gap between grinding plate 1 5 and grinding plate 2 6, the annular groove 10 and the discharge hole 9 and is sprayed into the exhaust gas. At the same time, larger particles and agglomerated powder are trapped between grinding plate 1 5 and grinding plate 2 6, and due to the blowing of the airflow, the larger particles and agglomerated powder come into contact with grinding plate 1 5 and grinding plate 2 6.
[0050] When the exhaust gas flows to the position of the impeller 7, the exhaust gas blows on the impeller 7 and continuously applies an axial driving force to the rotating shaft 2, so that the rotating shaft 2 rotates at high speed, thereby continuously changing the angle of the discharge hole 9 to expand the spray range of the powder and drive the grinding plate 5 to rotate continuously, and cooperate with the grinding plate 6 to grind larger particles and agglomerated powder.
[0051] After the powder is dispersed in the exhaust gas, the powder flows together with the exhaust gas in the connecting pipe 1. Due to the constraint of the guide plate 11 on the exhaust gas, the mixed gas of exhaust gas and powder flows in a spiral trajectory. Finally, the mixed gas flows through the connecting pipe 1 into the pipeline to continue flowing. The pipeline guides the mixed gas to the subsequent exhaust gas treatment equipment for further treatment of the exhaust gas, such as filtration by a bag filter.
[0052] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.
[0053] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above are only preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A waste gas purification device for co-incineration of garbage and sludge, characterized in that, include: The connecting pipe (1) has a rotating shaft (2) in the opening at one end, and a connector (3) is provided at one end of the rotating shaft (2) for injecting powder into the rotating shaft (2) and rotating connection between one end of the rotating shaft (2) and the connecting pipe (1). A flow divider (4) is opened at one end of the rotating shaft (2), and a grinding plate (5) is fixedly installed on its inner wall. A grinding plate (6) is provided on the side of the grinding plate (5) away from the impeller (7). Several discharge holes (9) are opened on the outer peripheral wall of the rotating shaft (2), and their interiors are connected to the interior of the diversion groove (4) through an annular groove (10); The impeller (7) is fixedly mounted on the other end of the rotating shaft (2), and the impeller (7) is rotatably connected to the connecting pipe (1) through the support member (8).
2. The waste gas purification device for co-incineration of waste and sludge according to claim 1, characterized in that: A guide plate (11) is fixedly installed inside the opening at the other end of the connecting pipe (1), and the guide plate (11) is spirally arranged.
3. The waste gas purification device for co-incineration of waste and sludge according to claim 2, characterized in that: The connector (3) includes a feed pipe (31), one end of which is fixedly inserted through the wall of the connecting pipe (1), and the other end of which is fixedly fitted with a support rod (32). The support rod (32) is rotatably connected to the inner wall of the opening of the diversion groove (4) through a bearing. The second grinding plate (6) is fixedly connected to the support rod (32), and the other end of the feed pipe (31) is inserted through the second grinding plate (6).
4. The waste gas purification device for co-incineration of waste and sludge according to claim 3, characterized in that: The middle part of the diversion groove (4) is truncated cone-shaped, and the middle part of the grinding plate (5) is inclined and raised towards the impeller (7) from all sides.
5. The waste gas purification device for co-incineration of waste and sludge according to claim 4, characterized in that: The discharge holes (9) are divided into several groups and are arranged at equal intervals on the outer peripheral wall of the rotating shaft (2), and the discharge holes (9) in adjacent groups are staggered.
6. The waste gas purification device for co-incineration of waste and sludge according to claim 5, characterized in that: The support member (8) includes a round rod (81), which is rotatably mounted on the axis of the impeller (7) via a bearing, and the round rod (81) is fixedly connected to the connecting pipe (1) via a connecting plate (82), the cross-section of which is triangular.