Novel sludge carbonization device

Abstract

The novel sludge carbonization device comprises a heating furnace, a heated furnace, an outer gear ring, a motor, a gear and an outer gear ring, the heated furnace comprises a heated furnace body, a mounting partition plate and a heated differential furnace tube, a heated cavity is formed in the heated differential furnace tube, and the outer gear ring is sleeved on the heated furnace body. A connecting shaft and a differential gear are arranged at one end of each heated differential furnace tube, and an inner gear ring meshed with all the differential gears is arranged on the heating furnace; according to the utility model, the heated furnace is formed by uniformly distributing the plurality of heated differential furnace tubes, and the heated gaps are arranged between the adjacent heated differential furnace tubes, so that the tube walls of all the heated differential furnace tubes can be heated in high-temperature smoke, the heated furnace rotates and heats in the heating furnace, and meanwhile, the heated differential furnace tubes realize differential rotation relative to the rotation speed of the heating furnace; when the heated differential furnace tube passes through the lowest position for direct heating every time, the heating positions are different, so that the whole heated differential furnace tube is uniformly heated, and the carbonization efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of sludge treatment, specifically relating to a novel sludge carbonization device. Background Technology

[0002] As people's living standards continue to improve, their demands for environmental quality are also increasing. In urban areas, centralized sludge treatment must be considered. Centralized sludge treatment generally employs a single treatment technology, requiring the sludge to be homogeneous and stable to ensure the stable and continuous operation of the treatment equipment. However, due to differences in influent water quality and treatment processes at wastewater treatment plants in different regions, the properties of the sludge produced from wastewater treatment vary. Figure 1 As shown, the test subjects were residual sludge from urban wastewater treatment plants within the administrative region of Jintang County. There were significant differences in the moisture content, volatile matter on a dry basis, and fixed carbon content on a dry basis among different wastewater treatment plants in Jintang County.

[0003] like Figure 2 The diagram shows a sludge treatment process flow chart. Sludge raw materials are transported from the sludge tank to the sludge dryer via a screw conveyor. The dryer is initially heated by natural gas at approximately 1000℃, reducing the sludge moisture content to around 30%. The dried sludge is then fed into a carbonization furnace for further processing. The carbonization furnace dries the sludge at the front end. Once a certain temperature is reached, the sludge pyrolyzes into biochar and pyrolysis gas. The pyrolysis gas is then transported to the drying combustion chamber. After complete combustion in the drying combustion chamber, the resulting flue gas passes through a flue gas treatment system. Because the moisture content, volatile matter, and fixed carbon content of the dried basis vary between different wastewater treatment plants, the operating parameters of the treatment equipment often need to be adjusted according to the different sources and properties of the sludge, resulting in unnecessary waste of resources and time. The applicant has already solved this technical problem in another patent application, where the sludge raw material, after homogenization, has a moisture content close to 80%, requiring drying treatment.

[0004] Chinese patent application number ZL2022234386895 discloses a sludge carbonization furnace, the structure of which is as follows: Figure 3 and Figure 4As shown, it includes a heating furnace and a heat-receiving furnace. The heat-receiving furnace is rotatably installed inside the heating furnace. The heating furnace has a heating chamber for heating the heat-receiving furnace and a heat-receiving cavity for containing sludge to be carbonized. A gear ring is installed on the heat-receiving furnace, and a motor is installed on the heating furnace. A gear is installed on the output shaft of the motor, and the gear and the gear ring mesh with each other. This application has the effect of improving the uniformity of sludge heating in the carbonization furnace. This method of carbonizing sludge in the heat-receiving furnace by using a large gear ring and the entire rotating heat-receiving furnace mainly adopts bottom heating and furnace wall heat conduction for carbonization. Relatively speaking, the carbonization quality of the middle part of the sludge piled in the carbonization furnace is not good. When it is completely carbonized, the carbonization time is long and the efficiency is low. It is necessary to design a new sludge carbonization device to further improve its carbonization efficiency. Summary of the Invention

[0005] In view of this, the purpose of this utility model is to provide a novel sludge carbonization device. This novel sludge carbonization device sets up a heating furnace inside the heating furnace. The heating furnace is composed of multiple heating differential furnace tubes evenly distributed, with heating gaps between adjacent heating differential furnace tubes. This allows the walls of all heating differential furnace tubes to be heated in high-temperature flue gas. The heating furnace rotates and heats inside the heating furnace. At the same time, the heating differential furnace tubes rotate at a different speed relative to the rotation speed of the heating furnace. This ensures that the heating position is different each time the heating differential furnace tube passes through the lowest point for direct heating, achieving uniform heating of the entire heating differential furnace tube and improving carbonization efficiency.

[0006] To achieve the above objectives, this utility model discloses a novel sludge carbonization device, comprising a heating furnace and a heat receiving furnace. The heat receiving furnace is rotatably installed inside the heating furnace. A heating chamber for heating the heat receiving furnace is provided inside the heating furnace. An external gear ring is installed on the peripheral wall of the heat receiving furnace extending out of the heating furnace. A motor is installed on the heating furnace, and a gear is installed on the output shaft of the motor. The gear and the external gear ring mesh with each other. The heat receiving furnace includes a heat receiving furnace body rotatably installed inside the heating furnace, a pair of mounting partitions arranged parallel to each other on the heat receiving furnace body and located near both ends inside the heating furnace, and heat receiving differential furnace tubes evenly distributed on the heat receiving furnace body and rotating on the pair of mounting partitions. A heat receiving chamber for accommodating the sludge to be carbonized is provided inside the heat receiving differential furnace tube. The external gear ring is fitted onto the heat receiving furnace body. A connecting shaft is provided at one end of each heat receiving differential furnace tube. A differential gear is provided at the other end of the connecting shaft extending out of the end of the heat receiving furnace body. An internal gear ring that meshes with all differential gears is provided on the heating furnace.

[0007] Furthermore, the internal gear ring and the external gear ring are located at the same end of the heating furnace.

[0008] Furthermore, the other end of the heated furnace body away from the internal gear ring is provided with a door to seal the heating chamber of the differential furnace tube.

[0009] Furthermore, the heated differential furnace tube is evenly distributed with heat-conducting cutting blades that are welded to the tube wall and used for cutting carbonized sludge.

[0010] Furthermore, a heating furnace tube is provided in the middle of the heating differential furnace tube in the middle of the heating furnace. The heating furnace tube is fixed to the mounting partition near both ends. A heating chamber I for accommodating the sludge to be carbonized is provided inside the heating furnace tube.

[0011] Furthermore, the heating chamber is located at the bottom of the heating furnace, and the bottommost heating differential furnace tube is located inside the upper part of the heating chamber.

[0012] Furthermore, an air inlet pipe is installed at the lower part of the heating furnace, the air inlet pipe is connected to the heating chamber, and an air inlet fan is rotatably installed inside the air inlet pipe.

[0013] Furthermore, the lower outer wall of the heating furnace is provided with a heating port that communicates with the lower part of the heating chamber, and a heating chamber door is provided at the heating port.

[0014] Furthermore, the end of the heated furnace body near the internal gear ring is connected to a pressure relief pipe that is connected to the heated differential furnace tube and the heated furnace tube, and the other end of the pressure relief pipe away from the heated furnace body is rotatably equipped with an exhaust pipe.

[0015] The beneficial effects of this utility model are as follows:

[0016] This novel sludge carbonization device features a heating furnace within a heating furnace. The heating furnace is composed of multiple differential heating furnace tubes evenly distributed, with heating gaps between adjacent tubes. This ensures that the walls of all the differential heating furnace tubes are heated by the high-temperature flue gas. The heating furnace rotates within the heating furnace, and the differential heating furnace tubes rotate at different speeds relative to the furnace. This results in different heating positions each time a tube passes the lowest point for direct heating, achieving uniform heating of the entire differential heating furnace tube and improving carbonization efficiency. Attached Figure Description

[0017] Figure 1 Table of test results for sludge raw materials awaiting drying in sludge treatment;

[0018] Figure 2 This is a process flow diagram for sludge treatment;

[0019] Figure 3 A schematic diagram of the structure of an existing novel sludge carbonization device;

[0020] Figure 4 for Figure 3 A partial lateral sectional view;

[0021] Figure 5 This is a schematic diagram of the structure of the novel sludge carbonization device of this utility model;

[0022] Figure 6 This is a side sectional view of the heating furnace in the novel sludge carbonization device of this utility model;

[0023] Figure 7 This is a side sectional view of another embodiment of the heating furnace in the novel sludge carbonization device of this utility model;

[0024] Figure 8 This is a cross-sectional view of the heating furnace in the novel sludge carbonization device of this utility model.

[0025] Reference numerals: 1. Heating furnace; 2. Heated furnace; 3. Inlet pipe; 4. Door; 5. Heating chamber; 6. Heating chamber door; 7. Exhaust pipe; 8. Motor; 9. External gear ring; 10. Pressure relief pipe; 11. Heated chamber; 12. Heated furnace body; 13. Heated differential furnace tube; 14. Mounting partition; 15. Connecting shaft; 16. Differential gear; 17. Internal gear ring; 18. Heated gap; 19. Heat-conducting cutting blade; 20. Heated furnace tube. Detailed Implementation

[0026] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] like Figure 5-8 The diagram shown is a structural schematic of the novel sludge carbonization device of this utility model. This utility model discloses a novel sludge carbonization device, including a heating furnace 1 and a heating furnace 2. The heating furnace 2 is rotatably installed inside the heating furnace 1. A heating chamber 5 for heating the heating furnace is provided inside the heating furnace 1. An external gear ring 9 is installed on the peripheral wall of the heating furnace 2 extending from the heating furnace 1. A motor 8 is installed on the heating furnace 1, and a gear is installed on the output shaft of the motor 8. The gear and the external gear ring 9 mesh with each other. The heating furnace 2 includes a heating furnace body 12 rotatably installed inside the heating furnace, and a pair of... The furnace body is provided with mounting partitions 14 arranged in parallel on the furnace body and located near both ends inside the furnace. The furnace body is also provided with heating differential furnace tubes 13 that are evenly distributed on the furnace body and rotate on a pair of mounting partitions. The heating differential furnace tubes 13 have heating chambers 11 for accommodating sludge to be carbonized. The outer gear ring 9 is fitted on the furnace body 12. One end of each heating differential furnace tube 13 is provided with a connecting shaft 15. The other end of the connecting shaft 15 extends out of the end of the furnace body and is provided with a differential gear 16. The furnace 1 is provided with an inner gear ring 17 that meshes with all the differential gears 16.

[0028] In this embodiment, the structure includes a heating furnace 2 inside the heating furnace. The heating furnace 2 is composed of multiple heating differential furnace tubes 13 evenly distributed, with heating gaps between adjacent heating differential furnace tubes 13. This allows the walls of all heating differential furnace tubes 13 to be heated in high-temperature smoke. The heating furnace rotates and heats inside the heating furnace, while the heating differential furnace tubes rotate at different speeds relative to the heating furnace. This ensures that the heating position is different each time the heating differential furnace tube passes through the lowest point for direct heating, achieving uniform heating of the entire heating differential furnace tube and improving carbonization efficiency.

[0029] In this embodiment, during operation, the heating furnace 2 is finally enclosed into a heating space by using the partition 14 and the heating furnace 1. Within the heating space, the heating differential furnace tubes can all be heated, with the best heating temperature at the bottom near the heating chamber 5, reaching 600°C. Smoke can enter the heating space along the heating gaps, allowing the temperature at the top of the heating space to reach 200-300°C. Under this high-temperature environment, the heating furnace 2 slowly circulates itself. To prevent the heating part of the heating differential furnace tube from remaining unchanged each time it passes the bottom, a differential tube can be used. By utilizing the differential structure, the heating part of the heating differential furnace tube is not the same each time it passes the bottom, thereby achieving the purpose of uniform heating and rapid carbonization.

[0030] In this embodiment, during the carbonization process, the motor drives the gear to rotate the outer gear ring 9, causing the heating furnace 2 to rotate inside the heating furnace 1. During the rotation of the heating furnace 1, the heating differential furnace tube deflects along the center of the heating furnace 2. At the same time, the differential gear 16 and the inner gear ring 17 mesh. The transmission ratio of the differential gear 16 and the inner gear ring 17 is different from the transmission ratio of the gear driving the outer gear ring 9. This causes the heating differential furnace tube to deflect along the center of the heating furnace 2 while also deflecting at a differential speed. This makes the heating differential furnace tube more uniformly heated and the carbonization effect better.

[0031] In a preferred embodiment, the internal gear ring 17 and the external gear ring 9 are located at the same end of the heating furnace 1. This structure facilitates installation and arrangement. The internal gear ring 17 is located on the outer ring of the external gear ring 9. During installation, the heating furnace 1 is first installed on the frame, then the external gear ring 9 is fixed on the heating furnace 1, and then the internal gear ring 17 is installed on the frame, making the transmission structure compact and easy to install.

[0032] In a preferred embodiment, the other end of the heated furnace body 12 away from the internal gear ring is provided with a door 4 that seals the heating chamber of the differential furnace tube. In this embodiment, the structure facilitates feeding, maintenance and installation through the door 4.

[0033] In a preferred embodiment, the heated differential furnace tube 13 is evenly distributed with heat-conducting cutting blades 19 that are welded to the tube wall and used to cut carbonized sludge. In this embodiment, the sludge carbonization effect is improved by cutting the sludge inside the heated differential furnace tube 13 with the heat-conducting cutting blades 19 and increasing the heating area.

[0034] In a preferred embodiment, a heating furnace tube 20 is provided in the middle of the heating furnace 2, located in the middle of the heating differential furnace tube 13. The heating furnace tube 20 is fixed to the mounting partition 14 near both ends. A heating chamber I is provided inside the heating furnace tube 20 to accommodate the sludge to be carbonized. In this embodiment, the heating differential furnace tube 13 extends through the mounting partition 14 at both ends to extend into the heating chamber I, which facilitates feeding and discharging. The mounting partition 14, the heating furnace 2, and the heating furnace form a closed heating space in the heating chamber I. The high-temperature flue gas from combustion fills the entire closed heating space to heat all the heating differential furnace tubes 13, thereby improving the carbonization efficiency.

[0035] In a preferred embodiment, the heating chamber 5 is located at the lower part of the heating furnace 2, and the bottom heating differential furnace tube 13 is located in the upper part of the heating chamber 5. In this embodiment, this structure allows the bottom heating differential furnace tube 13 to be directly heated. The high-temperature flue gas generated during the heating process enters the heating chamber I from the gap between adjacent bottom heating differential furnace tubes 13 to heat all heating differential furnace tubes 13 in the heating enclosed space, thereby improving the carbonization efficiency.

[0036] In a preferred embodiment, an air inlet pipe 3 is installed at the lower part of the heating furnace 2. The air inlet pipe 3 is connected to the heating chamber 5. An air intake fan is rotatably installed inside the air inlet pipe 3. This structure facilitates the air intake fan to deliver combustion-supporting gas into the heating chamber 5, thereby improving combustion efficiency.

[0037] In a preferred embodiment, the lower outer wall of the heating furnace 2 is provided with a heating port that communicates with the lower part of the heating chamber, and a heating chamber door 6 is provided at the heating port. This structure facilitates the addition of burning charcoal and wood through the heating chamber door 6, enabling the heating furnace to continue heating.

[0038] In a preferred embodiment, the end of the heated furnace body 12 near the internal gear ring is connected to a pressure relief pipe 10 that is connected to the heated differential furnace tube and the heated furnace tube, and the other end of the pressure relief pipe away from the heated furnace body 12 is rotatably equipped with an exhaust pipe 7.

[0039] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A novel sludge carbonization device, comprising a heating furnace and a heat receiving furnace, wherein the heat receiving furnace is rotatably installed inside the heating furnace, a heating chamber for heating the heat receiving furnace is provided inside the heating furnace, an external gear ring is installed on the peripheral wall of the heat receiving furnace extending from the heating furnace, a motor is installed on the heating furnace, a gear is installed on the output shaft of the motor, and the gear and the external gear ring mesh with each other, characterized in that: The heating furnace includes a heating furnace body rotatably installed inside the heating furnace, a pair of mounting partitions arranged parallel to each other on the heating furnace body and located near both ends inside the heating furnace, and heating differential furnace tubes evenly distributed on the heating furnace body and rotatably mounted on the pair of mounting partitions. The heating differential furnace tubes have heating chambers for accommodating sludge to be carbonized. The external gear ring is fitted onto the heating furnace body. Each heating differential furnace tube has a connecting shaft at one end, and a differential gear is provided at the other end of the connecting shaft extending out of the end of the heating furnace body. The heating furnace is provided with an internal gear ring that meshes with all the differential gears.

2. The novel sludge carbonization device as described in claim 1, characterized in that: The internal gear ring and the external gear ring are located at the same end of the heating furnace.

3. The novel sludge carbonization device as described in claim 1, characterized in that: The heating furnace body is provided with a door at the other end away from the internal gear ring to seal the heating chamber of the differential furnace tube.

4. The novel sludge carbonization device according to any one of claims 1 to 3, characterized in that: The heated differential furnace tube is evenly distributed with heat-conducting cutting blades that are welded to the tube wall and used for cutting carbonized sludge.

5. The novel sludge carbonization device as described in claim 2, characterized in that: The heating furnace is located in the middle of the heating differential furnace tube, and the heating furnace tube is fixed to the mounting partition near both ends. The heating furnace tube is provided with a heating chamber I for accommodating the sludge to be carbonized.

6. The novel sludge carbonization device as described in claim 1, characterized in that: The heating chamber is located at the bottom of the heating furnace, and the bottommost heating differential furnace tube is located inside the upper part of the heating chamber.

7. The novel sludge carbonization device as described in claim 6, characterized in that: An air inlet pipe is installed at the bottom of the heating furnace, and the air inlet pipe is connected to the heating chamber. An air inlet fan is rotatably installed inside the air inlet pipe.

8. The novel sludge carbonization device as described in claim 7, characterized in that: The lower outer wall of the heating furnace is provided with a heating port that communicates with the lower part of the heating chamber, and a heating chamber door is provided at the heating port.

9. The novel sludge carbonization device as described in claim 5, characterized in that: The end of the heated furnace body near the internal gear ring is connected to a pressure relief pipe that is connected to the heated differential furnace tube and the heated furnace tube. The other end of the pressure relief pipe away from the heated furnace body is rotatably equipped with an exhaust pipe.

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