Continuous feeding sludge carbonization device

Abstract

The utility model discloses a continuous feeding sludge carbonization device, which comprises a heating furnace, a heated furnace, an outer gear ring, a motor and a gear, the heated furnace comprises a heated furnace body, a front furnace door, a rear furnace door, a mounting partition plate, a heated differential furnace tube and a feeding furnace tube, one end of the feeding furnace tube is rotatably connected with a spiral feeder, and the other end of the feeding furnace tube is connected with a transition stock bin. Right guide arc-shaped sheets are uniformly distributed in the feeding furnace tube; one end of the heated differential furnace tube extends into the transition bin, the other end of the heated differential furnace tube is connected with a discharging bin, and left guide arc-shaped sheets are uniformly distributed in the heated differential furnace tube; according to the utility model, the feeding furnace tube and the heated differential furnace tube realize pug transportation in the rotating process by utilizing the material guide arc-shaped sheets on the inner walls of the feeding furnace tube and the heated differential furnace tube, so that the pug can be heated and carbonized in the heating furnace and can be automatically fed and transported, the continuous working time of the sludge carbonization device is prolonged, and the sludge carbonization efficiency is improved. And continuous heating carbonization can be realized without quenching the furnace, so that the carbonization efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sludge treatment, and in particular relates to a sludge carbonization device with continuous feeding. Background Art

[0002] As people's living standards continue to improve, the requirements for environmental quality are also increasing. In cities and towns, centralized sludge treatment has to be considered. Centralized sludge treatment generally adopts a single treatment technology, which requires the sludge properties to be uniform and stable, so as to ensure the stability and continuity of the operation of the treatment equipment. However, due to the differences in influent water quality and treatment processes of sewage treatment plants in different regions, the properties of sludge produced by sewage treatment are different, such as Figure 1 The figure shows a sludge treatment process flow chart. The sludge raw material is transported from the sludge pool to the sludge dryer through a screw conveyor. The dryer is heated by natural gas in the early stage, and the temperature is generally about 1000°C, so that the sludge moisture content drops to about 30%. The dried sludge is then sent to the carbonization furnace for treatment. The sludge is dried in the front section of the carbonization furnace. When a certain temperature is reached, the sludge is pyrolyzed into biochar and pyrolysis gas, and the pyrolysis gas is transported to the drying combustion chamber. The flue gas generated after full combustion in the drying combustion chamber passes through the flue gas treatment system. Due to the different moisture content and dry basis volatile matter and dry basis fixed carbon content detected by different sewage treatment plants, it is often necessary to adjust the operating parameters of the treatment equipment according to the sludge of different sources and properties during treatment, resulting in unnecessary waste of resources and time. The applicant has solved this technical problem in another patent and applied for a patent at the same time. After the sludge raw material is homogenized, the sludge moisture content is close to about 80%, and it needs to be dried.

[0003] Chinese patent application number: 2022234386895 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 in the heating furnace, a heating chamber for heating the heat receiving furnace is provided in the heating furnace, a heat receiving chamber for accommodating the sludge to be carbonized is provided in the heat receiving furnace, a gear ring is installed on the heating furnace, a motor is installed on the heating furnace, a gear is installed on the output shaft of the motor, the gear and the gear ring are meshed with each other, and the application has the effect of improving the uniformity of heating of the sludge in the carbonization furnace, and the sludge in the heating furnace is carbonized by the method of rotating the large gear ring and the heating furnace as a whole, which mainly adopts the method of bottom heating and furnace wall heat conduction to carbonize. 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. In addition, during the implementation process, each carbonization time is 3-4 hours. After 3-4 hours of carbonization, it needs to be cooled, the carbonized sludge is taken out, and then the sludge is filled in for the next carbonization. Among them, a sludge carbonization machine only works at high temperature for 6-8 hours in 24 hours a day, and the carbonization efficiency is low. In addition, it is necessary to reserve multiple operators for filling and taking materials, which is costly. Therefore, it is necessary to design a new continuous feeding sludge carbonization device to further improve its carbonization efficiency. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a continuous feeding sludge carbonization device, which continuously feeds sludge carbonization device. The heating furnace is provided with a heated differential furnace tube, a feeding furnace tube, a transition silo and a discharging silo, and the feeding furnace tube and the heated differential furnace tube are used to guide the material on the inner wall of the feeding furnace tube and the heated differential furnace tube. The feeding furnace tube and the heated differential furnace tube are used to transport the sludge during rotation, so that the sludge can be heated and carbonized in the heating furnace at the same time, and the sludge can be automatically loaded and transported, thereby increasing the continuous working time of the sludge carbonization device, so that it can be continuously heated and carbonized without turning off the furnace, thereby improving the carbonization efficiency.

[0005] In order to achieve the above-mentioned purpose, the utility model discloses a sludge carbonization device with continuous feeding, comprising a heating furnace and a heating furnace, wherein the heating furnace is rotatably installed in the heating furnace, a heating chamber for heating the heating furnace is provided in the heating furnace, an outer gear ring is installed on the peripheral wall of the heating furnace extending out of the heating furnace, a motor is installed on the heating furnace, a gear is installed on the output shaft of the motor, the gear and the outer gear ring are meshed with each other, the heating furnace comprises a heating furnace body rotatably installed in the heating furnace, a front furnace door, a rear furnace door, a pair of mounting partitions arranged in parallel in the heating furnace body and close to both ends, heated differential furnace tubes uniformly distributed in the heating furnace body and rotating on the mounting partitions, and a feeding furnace tube arranged at the center of the heating furnace body and fixed on the mounting partitions,

[0006] One end of the feeding furnace pipe extends out of the front furnace door of the heating furnace and is rotatably connected to a screw feeder, and the other end of the feeding furnace pipe is connected to a transition bin. The feeding furnace pipe is evenly distributed with right guide arc pieces for transferring mud to the transition bin when it rotates;

[0007] One end of the heated differential furnace tube extends into the transition bin, and the other end is connected to the discharge bin. The heated differential furnace tube is evenly distributed with left guide arc pieces for transferring mud to the discharge bin when it rotates;

[0008] One end of the heated differential furnace tube is provided with a connecting shaft, and the other end of the connecting shaft extends out of the heated furnace body and is provided with a differential gear. The heating furnace is provided with an inner gear ring meshing with all the differential gears.

[0009] Furthermore, the screw feeder is arranged on the heating furnace, a feed port is arranged at one end of the feeding furnace tube, and a discharge port is arranged at the other end, the end of the feeding furnace tube close to the feed port is rotatably connected in the screw feeder, the discharge port of the screw feeder extends into the feed port, and a conical silo is connected to the top of the screw feeder.

[0010] Furthermore, a material taking cover is mounted on the heated furnace body near the material discharging bin, a material taking pipe connected to the material taking cover is arranged at the bottom of the material taking cover, and material discharging holes connecting the material discharging bin and the material taking cover are evenly distributed on the heated furnace body.

[0011] Furthermore, a sealing plate is provided in the heated furnace body near the right end, and through holes for the connecting shaft to pass through are evenly distributed on the sealing plate. The transition bin is surrounded by the heated furnace body, the mounting partition near the right side and the sealing plate, and the discharge bin is surrounded by the heated furnace body, the mounting partition near the left side and the front furnace door.

[0012] Furthermore, the rear furnace door at the right end of the heated furnace body is configured as a detachable structure, and the rear furnace door is evenly provided with through holes I through which the connecting shaft passes.

[0013] Furthermore, the area of ​​the heated furnace body between the mounting partitions is configured as a heated chamber, and a heating groove connecting the heated chamber and the heating chamber is configured on the side wall of the heated furnace body near the heated differential furnace tube.

[0014] Furthermore, an air intake pipe is installed at the lower part of the heating furnace, the air intake pipe is connected to the heating chamber, and an air intake fan is rotatably installed in the air intake pipe.

[0015] Furthermore, a heating port connected to the lower part of the heating chamber is provided on the lower outer wall of the heating furnace, and a heating chamber door is provided at the heating port.

[0016] Furthermore, one end of the heated furnace body close to the inner gear ring is connected to a pressure relief pipe connected to a transition silo, and the other end of the pressure relief pipe away from the heated furnace body is rotatably mounted with an exhaust pipe.

[0017] The beneficial effects of the utility model are:

[0018] The utility model discloses a sludge carbonization device with continuous feeding. The heating furnace is provided with a heated differential furnace tube, a feeding furnace tube, a transition silo and a discharging silo. The feeding furnace tube and the heated differential furnace tube are provided with guiding arc pieces on the inner walls thereof so that the feeding furnace tube and the heated differential furnace tube can realize sludge transportation during rotation. Thus, the sludge can be heated and carbonized in the heating furnace and the sludge can be automatically fed and transported. The continuous working time of the sludge carbonization device is increased, and the sludge can be continuously heated and carbonized without turning off the furnace, thereby improving the carbonization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The process flow diagram for sludge treatment;

[0020] Figure 2 It is a structural schematic diagram of an existing continuous feeding sludge carbonization device;

[0021] Figure 3 for Figure 2 A lateral partial cross-sectional view of

[0022] Figure 4 It is a cross-sectional view of the center direction of the heating furnace of a sludge carbonization device with continuous feeding according to the utility model;

[0023] Figure 5 It is a cross-sectional view of the central direction of the heating furnace in a continuous feeding sludge carbonization device of the utility model;

[0024] Figure 6 It is a side cross-sectional view of a heating furnace in a sludge carbonization device with continuous feeding according to the utility model;

[0025] Figure 7 It is a transverse cross-sectional view of a heating furnace in a sludge carbonization device with continuous feeding according to the utility model.

[0026] Reference numerals: 1. heating furnace, 2. heating furnace, 3. air inlet pipe, 4. front furnace door, 5. heating chamber, 6. heating chamber door, 7. exhaust pipe, 8. motor, 9. Outer gear ring; 10. Pressure relief pipe; 11. Heating bin; 12. Heating furnace body; 13. Heating differential furnace tube; 14. Mounting partition; 15. Connecting shaft; 16. Differential gear; 17. Inner gear ring; 18. Heating gap; 19. Material guide arc piece; 20. Feeding furnace tube; 21. Conical silo; 22. Screw feeder; 23. Motor; 24. Feed inlet; 25. Right material guide arc piece; 26. Discharge outlet; 27. Transition silo; 28. Left material guide arc plate; 29. ​​Discharge bin; 30. Material taking cover; 31. Material taking pipe; 32. Rear furnace door; 33. Feed chute; 34. Discharge chute; 35. Sealing plate. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.

[0028] like Figure 4-7 The utility model shows a schematic diagram of the structure of a continuous feeding sludge carbonization device of the utility model; the utility model discloses a continuous feeding sludge carbonization device, comprising a heating furnace 1 and a heating furnace 2, the heating furnace 2 is rotatably installed in the heating furnace 1, a heating chamber 5 for heating the heating furnace 2 is provided in the heating furnace 1, an outer gear ring 9 is installed on the peripheral wall of the heating furnace 2 extending out of the heating furnace, a motor 8 is installed on the heating furnace 1, a gear is installed on the output shaft of the motor 8, the gear and the outer gear ring 9 are meshed with each other, the heating furnace 2 comprises a heating furnace body 12 rotatably installed in the heating furnace 1, a front furnace door 4, a rear furnace door 32, a pair of mounting partitions 14 arranged in parallel in the heating furnace body 12 and close to both ends, a heating differential furnace tube 13 uniformly distributed on the heating furnace body 12 and rotating on the mounting partition 14, and a feeding furnace tube 20 arranged at the center of the heating furnace body and fixed on the mounting partition,

[0029] One end of the feeding furnace pipe 20 extends out of the front furnace door of the heating furnace and is rotatably connected to a screw feeder 22. The other end of the feeding furnace pipe is connected to a transition bin 27. The feeding furnace pipe 20 is evenly distributed with right guide arc pieces 25 for transferring mud to the transition bin when it rotates.

[0030] One end of the heated differential furnace tube 13 extends into the transition bin 27, and the other end is connected to the discharge bin 29. The heated differential furnace tube 13 is evenly distributed with left guide arc pieces 28 for transferring the mud material into the discharge bin when it rotates.

[0031] A connecting shaft 15 is provided at one end of the heated differential furnace tube 13 , and a differential gear 16 is provided at the other end of the connecting shaft 15 extending out of the heated furnace body 12 . An inner gear ring 17 meshing with all the differential gears 16 is provided on the heating furnace 1 .

[0032] In this embodiment, the heating furnace 2 is provided with a heated differential furnace tube 13, a feeding furnace tube 20, a transition silo 27 and a discharge silo 29, and the feeding furnace tube and the heated differential furnace tube are used to guide the curved pieces 19 on the inner walls of the feeding furnace tube and the heated differential furnace tube so that the feeding furnace tube and the heated differential furnace tube can realize mud transportation during rotation, so that the mud can be automatically loaded and transported while being heated and carbonized in the heating furnace, thereby increasing the continuous working time of the sludge carbonization device, allowing the device to continuously heat and carbonize without shutting down the furnace, thereby improving the carbonization efficiency.

[0033] During operation of this embodiment, the heating furnace 2 is formed into a closed heating space by installing the partition 14 and the heating furnace 1. In the heating space, all the heated differential furnace tubes can be heated. The heating temperature is best at the bottom near the heating chamber 5, which can reach 600°C. The smoke can enter the heating space along the heating gap, so that the temperature at the top of the heating space can be 200-300°C. In this high-temperature environment, the heating furnace 2 circulates slowly by itself. In order to avoid the heating position of the heated differential furnace tube being fixed every time it passes the bottom, a differential tube can be used. By utilizing the differential tube structure, the heating position of the heated differential furnace tube is different every time it passes the bottom, thereby achieving the purpose of uniform heating of all the heated differential furnace tubes 13 of the heating furnace 2 and achieving the purpose of rapid carbonization.

[0034] In the present embodiment, during the carbonization process, the motor drives the gear to drive the outer gear ring 9 to rotate, so that the heated furnace 2 rotates in the heating furnace 1. During the rotation of the heating furnace 1, the heated differential furnace tube deflects along the center of the heated furnace 2. At the same time, the differential gear 16 and the inner gear ring 17 are meshed. 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. When the heated differential furnace tube deflects along the center of the heated furnace 2, it also needs to perform differential deflection itself, so that the heated differential furnace tube is heated more evenly and the carbonization effect is better.

[0035] In this embodiment, the sludge with a moisture content of 30% is fed into the feeding furnace tube 20 by means of a screw feeder 22. The feeding furnace tube 20 rotates together with the heating furnace under the rotation of the outer gear ring 9. During the rotation of the feeding furnace tube 20, the right guide arc piece acts as a right spiral blade to guide the sludge to the transition bin 27. During the right guiding process, the sludge is gradually dehydrated. The dehydrated sludge enters the heated differential furnace tube 13 along the transition bin 27. When rotating in the heated differential furnace tube 13, the left guide arc piece acts as a left spiral blade to guide the sludge to the discharge bin 29. During the left guiding process, the sludge is gradually carbonized, and the carbonized sludge is collected and discharged along the discharge bin 29.

[0036] In a preferred embodiment, a screw feeder 22 is arranged on the heating furnace, a feed port 24 is arranged at one end of the feeding furnace tube, and a discharge port 26 is arranged at the other end, the end of the feeding furnace tube 20 close to the feed port is rotatably connected in the screw feeder 22, the discharge port of the screw feeder 22 extends into the feed port, and a conical silo 21 is connected to the top of the screw feeder 22. In this embodiment, the sludge of the structure is fed through the conical silo 21, and the sludge enters the screw feeder 22 along the bottom of the conical silo 21. The screw feeder 22 feeds the sludge to the feed port of the feeding furnace tube 20 for feeding, wherein during the feeding process, the conical silo 21 and the screw feeder 22 are in a fixed state, and the feeding furnace tube 20 and the heating furnace are in a rotating state.

[0037] In a preferred embodiment, a material collection hood 30 is mounted on the heated furnace body 12 near the discharge bin, a material collection pipe 31 connected to the material collection hood is arranged at the bottom of the material collection hood, and discharge holes connecting the discharge bin and the material collection hood are evenly distributed on the heated furnace body 12. In this embodiment, the heated furnace body 12 is rotatably connected to the material collection hood 30. During the discharge process, the material collection hood 30 is in a fixed state and the heated furnace body 1 is in a rotating state.

[0038] In a preferred embodiment, a sealing plate is provided near the right end of the heated furnace body 12, and through holes for the connecting shaft to pass through are evenly distributed on the sealing plate. The transition bin 27 is surrounded by the heated furnace body, the mounting partition near the right side and the sealing plate, and the discharge bin is surrounded by the heated furnace body 12, the mounting partition near the left side and the front furnace door 4. The structure of this embodiment is convenient for installation, wherein the sealing plate 35, the mounting partition, the heated differential furnace tube 13 and the feeding furnace tube 20 can be installed in place offline, and then rotated as a whole to be installed in the heating furnace 1.

[0039] In a preferred embodiment, the rear furnace door 32 at the right end of the heated furnace body 12 is configured as a detachable structure, and the rear furnace door 32 is evenly provided with through holes I through which the connecting shaft 15 passes. This structure is convenient for maintenance. By adopting a detachable structure for the rear furnace door 32 and the sealing plate 35, it is convenient to open the transition bin 27 for maintenance at a later time.

[0040] In a preferred embodiment, the area between the installation partitions of the heated furnace body 12 is set as a heating chamber, and a heating groove connecting the heating chamber and the heating chamber is set on the side wall of the heated furnace body near the heated differential furnace tube. In this embodiment, the middle part of the heated furnace body 12 is in a hollow structure, which can directly heat the bottom heated differential furnace tube 13. The high-temperature flue gas generated during the heating process enters the heating cavity I through the heating gap between the heating groove and the adjacent bottom heated differential furnace tube 13, and heats all the heated differential furnace tubes 13 and the feeding furnace tube 20 in the heated closed space, thereby improving the carbonization efficiency.

[0041] In a preferred embodiment, an air intake pipe 3 is installed at the lower part of the heating furnace 2, and the air intake pipe 3 is connected to the heating chamber 5. An air intake fan is rotatably installed in the air intake pipe 3. This structure facilitates the air intake fan to transport combustion-supporting gas into the heating chamber 5, thereby improving combustion efficiency.

[0042] In a preferred embodiment, a heating port connected to the lower part of the heating chamber is provided on the lower outer wall of the heating furnace 2, and a heating chamber door 6 is provided at the heating port. This structure facilitates adding burning charcoal and wood through the heating chamber door 6, so that the heating furnace can continue to heat.

[0043] In a preferred embodiment, one end of the heated furnace body 12 close to the inner gear ring is connected to a pressure relief pipe 10 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 mounted with an exhaust pipe 7.

[0044] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than 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 in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A sludge carbonization device with continuous feeding, comprising a heating furnace and a heating furnace, wherein the heating furnace is rotatably installed in the heating furnace, a heating chamber for heating the heating furnace is provided in the heating furnace, an outer gear ring is installed on the peripheral wall of the heating furnace extending out of the heating furnace, a motor is installed on the heating furnace, a gear is installed on the output shaft of the motor, the gear and the outer gear ring are meshed with each other, and the characteristics are as follows: The heating furnace comprises a heating furnace body rotatably mounted in the heating furnace, a front furnace door, a rear furnace door, a pair of mounting partitions arranged in parallel in the heating furnace body and close to both ends, heating differential furnace tubes uniformly distributed on the heating furnace body and rotating on the mounting partitions, and a feeding furnace tube arranged at the center of the heating furnace body and fixed on the mounting partitions. One end of the feeding furnace pipe extends out of the front furnace door of the heating furnace and is rotatably connected to a screw feeder, and the other end of the feeding furnace pipe is connected to a transition bin. The feeding furnace pipe is evenly distributed with right guide arc pieces for transferring mud to the transition bin when it rotates; One end of the heated differential furnace tube extends into the transition bin, and the other end is connected to the discharge bin. The heated differential furnace tube is evenly distributed with left guide arc pieces for transferring mud to the discharge bin when it rotates; One end of the heated differential furnace tube is provided with a connecting shaft, and the other end of the connecting shaft extends out of the heated furnace body and is provided with a differential gear. The heating furnace is provided with an inner gear ring meshing with all the differential gears.

2. A continuous feeding sludge carbonization device as claimed in claim 1, characterized in that: The screw feeder is arranged on the heating furnace, one end of the feeding furnace tube is provided with a feed port, and the other end is provided with a discharge port, the end of the feeding furnace tube close to the feed port is rotatably connected in the screw feeder, the discharge port of the screw feeder extends into the feed port, and the top of the screw feeder is connected with a conical silo.

3. A continuous feeding sludge carbonization device as claimed in claim 1, characterized in that: A material taking cover is mounted on the heated furnace body near the material discharging bin, a material taking pipe connected to the material taking cover is arranged at the bottom of the material taking cover, and material discharging holes connected to the material discharging bin and the material taking cover are evenly distributed on the heated furnace body.

4. A continuous feeding sludge carbonization device as claimed in any one of claims 1 to 3, characterized in that: A sealing plate is provided in the heated furnace body near the right end, and through holes for the connecting shaft to pass through are evenly distributed on the sealing plate. The transition bin is surrounded by the heated furnace body, the mounting partition near the right side and the sealing plate, and the discharge bin is surrounded by the heated furnace body, the mounting partition near the left side and the front furnace door.

5. A continuous feeding sludge carbonization device as claimed in claim 4, characterized in that: The rear furnace door at the right end of the heated furnace body is configured as a detachable structure, and the rear furnace door is evenly provided with through holes I through which the connecting shaft passes.

6. A continuous feeding sludge carbonization device as claimed in claim 1, characterized in that: The area of ​​the heated furnace body between the mounting partitions is set as a heated chamber, and a heating groove connecting the heated chamber and the heating chamber is set on the side wall of the heated furnace body near the heated differential furnace tube.

7. A continuous feeding sludge carbonization device as claimed in claim 1, characterized in that: An air intake pipe is installed at the lower part of the heating furnace, the air intake pipe is connected to the heating chamber, and an air intake fan is rotatably installed in the air intake pipe.

8. A continuous feeding sludge carbonization device as claimed in claim 1, characterized in that: A heating port communicating with the lower part of the heating bin is provided on the lower outer wall of the heating furnace, and a heating bin door is provided at the heating port.

9. A continuous feeding sludge carbonization device as claimed in claim 4, characterized in that: One end of the heated furnace body close to the inner gear ring is connected to a pressure relief pipe connected to a transition silo, and the other end of the pressure relief pipe away from the heated furnace body is rotatably mounted with an exhaust pipe.

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