A rotary kiln exhaust gas purification and sludge treatment integrated device

Abstract

The utility model relates to waste gas treatment technical field especially discloses a rotary kiln waste gas purification and sludge treatment integrated equipment, including the treatment box, the inside of treatment box is opened with the storage liquid cavity and sprays the chamber, fixedly installed with the riser on the treatment box, the bottom fixedly installed with the filter disc of riser, the inside rotation of riser is installed with spiral feeding rod through the labyrinth seal method, fixedly installed with the liquid transfer pipe on the treatment box, the liquid transfer pipe is evenly fixedly installed with the shower nozzle, the terminal fixedly installed with the liquid transfer pump of liquid transfer pipe, the side end fixedly installed with the discharge disc of treatment box, fixedly installed with the quartz tube between discharge disc and riser, rotation is installed with spiral feeding pipe between discharge disc and riser through the labyrinth seal method, the inside fixedly installed with infrared heating tube of quartz tube, make waste gas and sludge collaborative treatment, reached the effect of improving the processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to an integrated equipment for rotary kiln waste gas purification and sludge treatment. Background Technology

[0002] In industrial production, rotary kilns are widely used in industries such as cement, steel, and non-ferrous metal smelting. During operation, rotary kilns generate a large amount of waste gas containing pollutants such as dust, sulfur oxides, and nitrogen oxides. Direct discharge without effective treatment will cause serious environmental pollution. Therefore, how to safely and efficiently treat sludge has become a crucial issue in environmental protection. In practical applications, this integrated equipment typically requires the following technologies:

[0003] 1. Waste gas purification mechanism: It reacts nitrogen oxides with reducing agents (such as ammonia) to convert them into nitrogen and water, thereby effectively removing nitrogen oxides from the waste gas;

[0004] 2. Sludge treatment facilities: Sludge is treated using technologies such as drying and incineration. The drying process can be carried out by heat conduction drying, convection drying, etc., which evaporates the water in the sludge by heating and reduces the water content of the sludge.

[0005] 3. Connection and coordination mechanism: Through a reasonable pipeline layout and control system, the waste gas purification mechanism and the sludge treatment mechanism are effectively connected and work together.

[0006] Existing rotary kiln exhaust gas purification and sludge treatment equipment generally designs and operates exhaust gas purification and sludge treatment as two relatively independent systems. The exhaust gas purification equipment focuses on treating the rotary kiln exhaust gas, while the sludge treatment equipment treats the sludge separately. There is a lack of effective synergy and integration between the two, resulting in low treatment efficiency. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides an integrated rotary kiln exhaust gas purification and sludge treatment device. This solves the technical problem that existing rotary kiln exhaust gas purification and sludge treatment devices are generally designed and operated as two relatively independent systems. The exhaust gas purification device focuses on treating the rotary kiln exhaust gas, while the sludge treatment device treats the sludge separately. There is a lack of effective coordination and integration between the two, resulting in low treatment efficiency.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An integrated rotary kiln exhaust gas purification and sludge treatment device includes a treatment box, which has a liquid storage chamber and a spray chamber inside. A riser pipe is fixedly installed on the treatment box, and a filter disc is fixedly installed at the bottom end of the riser pipe. A spiral feeder is rotatably installed inside the riser pipe through a labyrinth seal method. A liquid delivery pipe is fixedly installed on the treatment box, and nozzles are evenly fixedly installed on the liquid delivery pipe. A liquid delivery pump is fixedly installed at the end of the liquid delivery pipe. A discharge plate is fixedly installed on the side of the treatment box, and a quartz tube is fixedly installed between the discharge plate and the riser pipe. A spiral feeder is rotatably installed between the discharge plate and the riser pipe through a labyrinth seal method. An infrared heating tube is fixedly installed inside the quartz tube.

[0010] Preferably, a flow guide is fixedly installed on the processing box.

[0011] Preferably, a dual-axis motor is fixedly installed on the fairing.

[0012] Preferably, a bevel gear set is installed between the output shaft of the dual-shaft motor and the screw feed rod.

[0013] Preferably, a spur gear set is installed between the output shaft of the dual-shaft motor and the spiral feeding tube.

[0014] Preferably, a baffle plate is fixedly installed inside the processing box.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. During installation, connect one end of the guide hood to the exhaust gas conveying mechanism and the other end to the extraction mechanism. Connect the exhaust pipe at the top of the discharge plate to the extraction mechanism. During use, the exhaust gas conveying mechanism will send the exhaust gas along the guide hood into the treatment box, and then discharge it from the other end of the guide hood. During this process, the infusion pump will start and deliver the reducing agent located in the storage chamber of the treatment box to the nozzle through the infusion pipe, and then spray it out from the nozzle to purify the exhaust gas. The sprayed reducing agent will carry the dust particles in the exhaust gas onto the guide plate, and then flow from the guide plate to the inclined surface inside the treatment box, and then flow from the inclined surface to the filter plate. The reducing agent will pass through the filter plate and flow back to the storage chamber. The dust particles will be filtered out by the filter plate. Then the dual-shaft motor will start, and the dual-shaft motor will drive the screw feed rod to rotate clockwise through the bevel gear set. Figure 3 (From a visual perspective), the rotating screw feeder will lift the sludge intercepted above the filter disc along the riser pipe into the screw feeder pipe. The dual-shaft motor, once started, will synchronously drive the screw feeder pipe to rotate clockwise via a spur gear set. Figure 3(From a perspective) the spiral feed pipe will transport the sludge to the discharge plate and discharge it through the opening at the bottom of the discharge plate. During this process, the infrared heating tube will be activated to heat and dry the sludge transported by the spiral feed pipe through the quartz tube. The water vapor evaporated from the sludge will be discharged through the exhaust pipe at the top of the discharge plate. The sludge is directly dried during the discharge process, so that the waste gas and sludge are treated together, thereby improving the treatment efficiency. Attached Figure Description

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 This is a side sectional view of the present invention.

[0020] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0021] Figure 4 This is a front cross-sectional view of the present invention.

[0022] Legend: 1. Processing box; 2. Lifting pipe; 3. Spiral feeder; 4. Infusion pipe; 5. Nozzle; 6. Infusion pump; 7. Discharge plate; 8. Quartz tube; 9. Spiral feeder; 11. Infrared heating tube; 12. Flow guide; 13. Dual-axis motor; 14. Bevel gear set; 15. Spur gear set; 16. Filter plate; 17. Flow guide plate. Detailed Implementation

[0023] This application provides an integrated rotary kiln exhaust gas purification and sludge treatment device, effectively solving the technical problem of existing rotary kiln exhaust gas purification and sludge treatment equipment, which generally designs and operates exhaust gas purification and sludge treatment as two relatively independent systems. The exhaust gas purification equipment focuses on treating the rotary kiln exhaust gas, while the sludge treatment equipment treats the sludge separately. There is a lack of effective synergy and integration between the two, resulting in low treatment efficiency. During installation, one end of the guide hood is connected to the exhaust gas conveying mechanism, and the other end is connected to the extraction mechanism. The exhaust pipe at the top of the discharge plate is connected to the extraction mechanism. During use, the exhaust gas... The gas conveying mechanism will send the exhaust gas along the guide hood into the treatment box, and then discharge it from the other end of the guide hood. During this process, the infusion pump will start and deliver the reducing agent located in the storage chamber of the treatment box to the nozzle through the infusion pipe. The reducing agent will then be sprayed out from the nozzle to purify the exhaust gas. The sprayed reducing agent will carry the dust particles in the exhaust gas onto the guide plate, and then flow from the guide plate to the inclined surface inside the treatment box. From the inclined surface, it will flow to the filter plate. The reducing agent will pass through the filter plate and flow back to the storage chamber. The dust particles will be filtered out by the filter plate. Then, the dual-shaft motor will start and drive the screw feed rod to rotate clockwise through the bevel gear set. Figure 3 (From a visual perspective), the rotating screw feeder will lift the sludge intercepted above the filter disc along the riser pipe into the screw feeder pipe. The dual-shaft motor, once started, will synchronously drive the screw feeder pipe to rotate clockwise via a spur gear set. Figure 3 (From a perspective) the spiral feed pipe will transport the sludge to the discharge plate and discharge it through the opening at the bottom of the discharge plate. During this process, the infrared heating tube will be activated to heat and dry the sludge transported by the spiral feed pipe through the quartz tube. The water vapor evaporated from the sludge will be discharged through the exhaust pipe at the top of the discharge plate. The sludge is directly dried during the discharge process, so that the waste gas and sludge are treated together, thereby improving the treatment efficiency.

[0024] Example

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the problem of existing rotary kiln exhaust gas purification and sludge treatment equipment, which generally designs and operates exhaust gas purification and sludge treatment as two relatively independent systems. The exhaust gas purification equipment focuses on treating rotary kiln exhaust gas, while the sludge treatment equipment treats sludge separately. There is a lack of effective coordination and integration between the two, resulting in low treatment efficiency. The overall approach is as follows:

[0026] To address the problems existing in the prior art, this utility model provides an integrated equipment for rotary kiln exhaust gas purification and sludge treatment, including a treatment box 1. The treatment box 1 has a liquid storage chamber and a spray chamber inside. A lifting pipe 2 is fixedly installed on the treatment box 1. A filter disc 16 is fixedly installed at the bottom end of the lifting pipe 2. A spiral feeding rod 3 is rotatably installed inside the lifting pipe 2 through a labyrinth sealing method.

[0027] An infusion tube 4 is fixedly installed on the treatment box 1. Nozzles 5 are evenly fixedly installed on the infusion tube 4. An infusion pump 6 is fixedly installed at the end of the infusion tube 4. A discharge plate 7 is fixedly installed on the side of the treatment box 1. A quartz tube 8 is fixedly installed between the discharge plate 7 and the lifting pipe 2. A spiral feeding pipe 9 is rotatably installed between the discharge plate 7 and the lifting pipe 2 through a labyrinth seal method.

[0028] An infrared heating tube 11 is fixedly installed inside the quartz tube 8. A flow guide shroud 12 is fixedly installed on the processing box 1. A dual-axis motor 13 is fixedly installed on the flow guide shroud 12. A bevel gear set 14 is installed between the output shaft of the dual-axis motor 13 and the spiral feed rod 3. A spur gear set 15 is installed between the output shaft of the dual-axis motor 13 and the spiral feed tube 9. A flow guide plate 17 is fixedly installed inside the processing box 1.

[0029] Treatment box 1: As the main structure of the entire integrated equipment, it is equipped with a liquid storage chamber for storing reducing agent and a spray chamber for spraying operation of waste gas purification. At the same time, treatment box 1 provides the installation foundation for other components such as riser pipe 2, liquid delivery pipe 4, flow guide hood 12, flow guide plate 17, etc., and is the core carrier of the waste gas purification and sludge treatment process.

[0030] Lifting pipe 2: It is fixedly installed on the processing box 1. The filter disc 16 installed at its bottom is used to intercept dust particles. The spiral feeding rod 3 installed inside by the labyrinth sealing method can lift the sludge above the filter disc 16 into the spiral feeding pipe 9 to realize the vertical transportation of sludge. It is an important channel connecting filtration and subsequent sludge treatment.

[0031] Spiral feed rod 3: It is rotatably installed inside the lifting pipe 2 by a labyrinth seal method. Driven by the dual-shaft motor 13 through the bevel gear set 14, it rotates clockwise to lift the sludge intercepted by the filter disc 16 upward along the lifting pipe 2, thereby transporting the sludge from the bottom of the treatment box 1 to a higher position so that it can enter the spiral feed pipe 9 for further processing.

[0032] Infusion tube 4: It is fixedly installed on the treatment tank 1. Its function is to deliver the reducing agent drawn by the infusion pump 6 from the storage chamber of the treatment tank 1 to the nozzle 5, so as to provide the required reducing agent for the purification of exhaust gas and ensure that the exhaust gas is effectively purified in the spray chamber.

[0033] Nozzle 5: It is evenly and fixedly installed on the infusion pipe 4, and sprays the reducing agent delivered by the infusion pipe 4 in the form of a spray, so that the reducing agent can fully contact the waste gas, thereby achieving the purification treatment of the waste gas. It is a key component for realizing the gas-liquid contact reaction in the waste gas purification process.

[0034] Infusion pump 6: Fixedly installed at the end of infusion pipe 4, its function is to provide power to extract the reducing agent in the storage chamber of treatment tank 1 and pressurize and deliver it to infusion pipe 4, ensuring that the reducing agent can be smoothly sprayed out through nozzle 5, and ensuring the normal operation of the waste gas purification process.

[0035] Discharge plate 7: It is fixedly installed on the side of the processing box 1. Its top exhaust pipe is connected to the air extraction mechanism to discharge the water vapor generated during the sludge drying process. At the same time, the spiral feed pipe 9 transports the sludge to the bottom opening of the discharge plate 7 for discharge. It is a key outlet component for sludge discharge and water vapor emission.

[0036] Quartz tube 8: It is fixedly installed between the discharge plate 7 and the lifting pipe 2. It has good light transmittance and allows the infrared rays emitted by the internal infrared heating tube 11 to pass through, so as to heat and dry the sludge conveyed in the spiral feeding pipe 9. At the same time, it plays the role of isolating and protecting the infrared heating tube 11.

[0037] Spiral feed pipe 9: It is rotatably installed between discharge plate 7 and lifting pipe 2 by labyrinth sealing method. Driven by dual-shaft motor 13 through spur gear set 15, it rotates clockwise and conveys the sludge from lifting pipe 2 to discharge plate 7. During the conveying process, the sludge passes through the heating and drying area of ​​infrared heating tube 11, realizing the function of conveying and drying sludge at the same time.

[0038] Infrared heating tube 11: It is fixedly installed inside the quartz tube 8. After being powered on, it emits infrared rays, which pass through the quartz tube 8 to heat the sludge in the spiral feeding tube 9, causing the water in the sludge to evaporate and achieving the drying treatment of the sludge. It is the heat source component in the sludge drying process.

[0039] The guide hood 12 is fixedly installed on the treatment box 1. One end is connected to the exhaust gas conveying mechanism and the other end is connected to the exhaust gas extraction mechanism. It guides the exhaust gas into the treatment box 1 and discharges it from the other end, ensuring that the exhaust gas flows in the treatment box 1 according to the set path so as to fully contact the reducing agent sprayed from the nozzle 5 and achieve effective purification.

[0040] Dual-shaft motor 13: Fixedly installed on the guide shroud 12, serving as a power source. Its two output shafts drive the screw feed rod 3 and screw feed pipe 9 to rotate clockwise synchronously through the bevel gear set 14 and the spur gear set 15, respectively, providing power for the lifting and conveying of sludge and ensuring the continuity of the sludge treatment process.

[0041] Bevel gear set 14: Installed between the output shaft of the dual-shaft motor 13 and the screw feed rod 3, it transmits the rotational power of the output shaft of the dual-shaft motor 13 to the screw feed rod 3 and changes the direction of power transmission, so that the screw feed rod 3 can rotate clockwise in the lifting pipe 2 to realize the lifting operation of sludge;

[0042] Spur gear set 15: Installed between the output shaft of the dual-shaft motor 13 and the spiral feeding pipe 9, it transmits the rotational power of the output shaft of the dual-shaft motor 13 to the spiral feeding pipe 9, ensuring that the spiral feeding pipe 9 rotates clockwise synchronously with the spiral feeding rod 3, so as to realize the smooth conveying of sludge from the lifting pipe 2 to the discharge plate 7;

[0043] Filter disc 16: Fixedly installed at the bottom of the lifting pipe 2, used to filter the reducing agent carrying dust particles after spraying, so that the reducing agent flows back to the liquid storage chamber through the filter disc 16, while the dust particles are intercepted above the filter disc 16, in preparation for the subsequent lifting of sludge by the screw feeder 3.

[0044] The guide plate 17 is fixedly installed inside the treatment box 1 to guide the reducing agent carrying dust particles after spraying to the inclined surface inside the treatment box 1, and then to the filter plate 16. It can improve the flushing force of the reducing agent on the sludge on the inclined surface inside the treatment box 1, and ensure that the sludge can flow to the filter plate 16.

[0045] Working principle:

[0046] The first step is to connect one end of the guide shroud 12 to the exhaust gas conveying mechanism and the other end to the extraction mechanism during installation. The exhaust pipe at the top of the discharge disc 7 is connected to the extraction mechanism. During use, the exhaust gas conveying mechanism will send the exhaust gas along the guide shroud 12 into the treatment box 1, and then discharge it from the other end of the guide shroud 12. During this process, the infusion pump 6 will start and deliver the reducing agent located in the storage chamber of the treatment box 1 to the nozzle 5 via the infusion pipe 4. The nozzle 5 will then spray the reducing agent to purify the exhaust gas. The sprayed reducing agent will carry the dust particles in the exhaust gas onto the guide plate 17, and then flow from the guide plate 17 to the inclined surface inside the treatment box 1, and then flow from the inclined surface to the filter disc 16. The reducing agent will pass through the filter disc 16 and flow back into the storage chamber. The dust particles will be filtered out by the filter disc 16. Then, the dual-shaft motor 13 will start, and the dual-shaft motor 13 will drive the screw feed rod 3 to rotate clockwise through the bevel gear set 14. Figure 3 (From a perspective), the rotating screw feeder 3 will lift the sludge intercepted above the filter disc 16 along the lift pipe 2 into the screw feeder pipe 9. The dual-shaft motor 13 will start and drive the screw feeder pipe 9 to rotate clockwise synchronously through the spur gear set 15. Figure 3(From a perspective) the spiral feed pipe 9 will transport the sludge to the discharge plate 7 and discharge it through the opening at the bottom of the discharge plate 7. During this process, the infrared heating tube 11 will be activated to heat and dry the sludge transported by the spiral feed pipe 9 through the quartz tube 8. The water vapor evaporated from the sludge will be discharged along the exhaust pipe at the top of the discharge plate 7. The sludge is directly dried during the discharge process, so that the waste gas and sludge are treated together, thereby improving the treatment efficiency.

[0047] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An integrated equipment for rotary kiln exhaust gas purification and sludge treatment, comprising a treatment tank (1), characterized in that, The processing box (1) has a liquid storage chamber and a spray chamber inside. A lifting pipe (2) is fixedly installed on the processing box (1). A filter plate (16) is fixedly installed at the bottom end of the lifting pipe (2). A spiral feeding rod (3) is rotatably installed inside the lifting pipe (2) by a labyrinth seal method. An infusion pipe (4) is fixedly installed on the processing box (1). Spray nozzles (5) are evenly fixedly installed on the infusion pipe (4). An infusion pump (6) is fixedly installed at the end of the infusion pipe (4). A discharge plate (7) is fixedly installed on the side end of the processing box (1). A quartz tube (8) is fixedly installed between the discharge plate (7) and the lifting pipe (2). A spiral feeding pipe (9) is rotatably installed between the discharge plate (7) and the lifting pipe (2) by a labyrinth seal method. An infrared heating tube (11) is fixedly installed inside the quartz tube (8).

2. The integrated rotary kiln exhaust gas purification and sludge treatment equipment as described in claim 1, characterized in that, A flow guide (12) is fixedly installed on the processing box (1).

3. The integrated rotary kiln exhaust gas purification and sludge treatment equipment as described in claim 2, characterized in that, A dual-axis motor (13) is fixedly installed on the air guide (12).

4. The integrated rotary kiln exhaust gas purification and sludge treatment equipment as described in claim 3, characterized in that, A bevel gear set (14) is installed between the output shaft of the dual-shaft motor (13) and the screw feed rod (3).

5. The integrated rotary kiln exhaust gas purification and sludge treatment equipment as described in claim 3, characterized in that, A spur gear set (15) is installed between the output shaft of the dual-shaft motor (13) and the spiral feed tube (9).

6. The integrated rotary kiln exhaust gas purification and sludge treatment equipment as described in claim 1, characterized in that, A flow guide plate (17) is fixedly installed inside the processing box (1).

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