A sugarcane mud drying device

Abstract

This invention provides a sugarcane pulp drying device. Sugarcane pulp enters the feed cylinder through the inlet and then falls onto a vibrating screen under gravity. Under the vibration of the vibrating screen, it flows out evenly through the mesh of the screen. The air blown out by the fan forms two airflows. One airflow passes through the carbonization ventilation chamber, absorbs the heat generated by the electric heating wire, and forms a hot flow that flows upward to heat the falling sugarcane pulp and reduce its moisture content. The other airflow flows out through the outlet pipe, carrying away the moisture in the sugarcane pulp. After some sugarcane pulp falls into the carbonization ventilation pipe, it is carbonized under the action of the electric heating wire, releasing heat. Some of it is converted into biochar, and some is burned into ash. Then it falls from the bottom of the carbonization ventilation pipe into the air filling pipe and is sprayed out of the air filling pipe with the airflow. The biochar and ash have a relatively high temperature, which heats the airflow in the air filling pipe, increases the airflow temperature, and also mixes evenly with the sugarcane pulp filter mud falling into the falling chamber.

Description

Technical Field

[0001] This invention relates to the field of drying equipment technology, specifically a sugarcane pulp drying device. Background Technology

[0002] Sugarcane slime is filter mud produced by sugar mills. After sugarcane enters the sugar mill's pressing workshop, it is torn apart, crushed, pressed, and pulverized; the residue is the filter mud. Filter mud is a very high-quality organic matter that can be used as a raw material for fertilizer production, fermented as fish feed, or mixed with farmyard manure for fermentation to become high-quality farmyard manure.

[0003] However, the sugarcane pulp from the pressing process has a moisture content of around 70%, which is too high for composting and will cause inconvenience in transportation and application after composting. However, drying the sugarcane pulp to too low a moisture content is not conducive to composting fermentation. Therefore, it is necessary to control the moisture content of the sugarcane pulp to around 50%.

[0004] Since the composting process has relatively low added value, using boiler steam drying or electric drying would require a large amount of energy, which would greatly increase the cost of composting. Summary of the Invention

[0005] To address the technical problems in the background art, this invention discloses a sugarcane pulp drying device.

[0006] The present invention provides a sugarcane pulp drying device, including a material cylinder with an inlet at the upper end and an outlet at the lower end;

[0007] The inner cavity of the barrel is provided with the following components from top to bottom:

[0008] The vibrating chamber contains a vibrating screen, which causes the sugarcane pulp to flow out through the mesh of the screen.

[0009] The fluidization chamber is equipped with a fluidization cavity, and the flow area of ​​the fluidization cavity decreases from the center to the upper and lower sides.

[0010] The logistics room is equipped with a carbonization ventilation pipe, which forms a carbonization ventilation chamber inside and a falling chamber outside. Part of the sugarcane pulp falls into the falling chamber, and the rest falls into the carbonization ventilation chamber. The carbonization ventilation chamber is equipped with an electric heating wire, which heats the sugarcane pulp in the carbonization ventilation chamber to generate ash and biochar.

[0011] An air filling chamber is equipped with an air filling pipe; the air filling pipe passes through the material cylinder and connects to the air outlet of the blower; the inner end of the air filling pipe faces the outlet of the material flow chamber, mixing sugarcane pulp, ash, and biochar; a side pipe is connected to the air filling pipe, which connects to the bottom of the carbonization ventilation pipe; the airflow rises to the fluidization chamber after being heated by an electric heating wire, and forms a fluidized state; the thrust generated by the airflow at the blower outlet is less than the gravity of the ash and biochar, allowing the ash and biochar to fall from the carbonization ventilation chamber into the air filling pipe;

[0012] The discharge chamber is equipped with an auger to output the mixture of sugarcane pulp, ash, and biochar from the feed cylinder.

[0013] Sugarcane pulp enters the feed cylinder through the inlet and then falls onto the vibrating screen under gravity. The vibration of the screen causes it to flow evenly through the mesh, increasing the contact area between the pulp and the hot air, thus improving the water removal capacity and efficiency. The air blown by the blower forms two airflow paths. One path passes through the carbonization ventilation chamber, absorbing heat generated by the electric heating wire, and then flows upwards to heat the falling sugarcane pulp, reducing its moisture content. Furthermore, the airflow forms a fluidized state in the fluidization chamber, increasing the turbulence of the pulp as it falls, enhancing the contact time with the airflow, and improving the water removal effect. The other path flows out through the outlet pipe, passes through the air chamber, and flows upwards to carry away moisture from the sugarcane pulp. Finally, the airflow exits from the top of the feed cylinder. After some sugarcane pulp falls into the carbonization aeration pipe, it is carbonized and releases heat under the action of electric heating wires. Part of it is converted into biochar, and part is burned into ash. Then it falls from the bottom of the carbonization aeration pipe into the aeration pipe and is sprayed out of the aeration pipe with the airflow. The biochar and ash have a relatively high temperature, which heats the airflow in the aeration pipe, increases the airflow temperature, and can also be evenly mixed with the sugarcane pulp filter mud falling into the falling chamber. Biochar has the following two beneficial effects: 1. Biochar can be used as a compost amendment, with good stability, which can reduce ammonia emissions during composting; 2. The addition of biochar can increase the maturity and fertility of compost products, expand the microbial community structure during composting, improve metabolic function, and increase the abundance of microorganisms.

[0014] The present invention also has the following two beneficial effects: 1. Simple structure and low manufacturing cost; 2. Due to the small air volume of the blower, there is no need to lift and dry the sugarcane pulp, so the energy consumption required by the equipment is low compared with traditional steam drying or electric drying.

[0015] The specific structure of the fluidization chamber is as follows: two sets of symmetrically arranged baffle assemblies are installed inside the fluidization chamber. Each baffle assembly consists of two V-shaped baffles connected vertically. The open ends of the baffles are connected to the inner wall of the fluidization chamber, thus forming an M-shape. The middle part of the baffle assembly forms a V-shape with its openings facing each other, thus forming the fluidization chamber.

[0016] After sugarcane pulp falls from the vibrating screen, some of it accumulates on the upper side of the partition and is difficult to fall off. Based on this, a further improvement is made: the partition is elastic and a vibrator is installed on the back side of its upper part. The vibration of the vibrator causes the sugarcane pulp to detach from the partition and fall off.

[0017] To increase the amount of ash and biochar, enlarging the diameter of the carbonization aeration pipe would waste materials and increase costs. Therefore, a further improvement is made by connecting a connecting plate to the upper end of the carbonization aeration pipe, so that the upper end of the carbonization aeration pipe forms a flared structure to increase the amount of sugarcane mud entering the carbonization aeration pipe.

[0018] Because the auger's inlet cannot cover the outlet of the air chamber, some sugarcane pulp falls outside the auger and is difficult to remove. Therefore, a further improvement is made: a guide plate is connected to the lower end of the carbonization air pipe, its height decreasing from the carbonization air chamber to the falling chamber; a falling channel is formed between the guide plate and the inner wall of the air chamber, located directly above the auger's inlet, and the auger's inlet covers the falling channel. The guide plate also guides the falling sugarcane pulp, ensuring it falls accurately into the auger.

[0019] The guide plate, connected to the carbonization aeration pipe at only one end, is structurally unstable and prone to wobbling, making it difficult for sugarcane pulp to fall accurately into the auger. Therefore, a further improvement is made: the inner end of the aeration pipe is connected to the lower end face of the guide plate. This design allows the aeration pipe to support the guide plate, improving the stability of the installation structure and preventing wobbling. Furthermore, the guide plate also guides the ash and biochar blown out by the aeration pipe, facilitating the mixing of the ash, biochar, and sugarcane pulp.

[0020] Since ash and biochar produce flue gas that pollutes the environment after flowing out of the feed cylinder, a further improvement is made: the guide plate is a perforated plate, ensuring that a layer of sugarcane pulp always accumulates on its upper surface, adsorbing and filtering the flue gas generated from the ash and biochar. This design simplifies the structure and reduces costs compared to a separate adsorption and filtration device.

[0021] Some of the ash and biochar blown out by the air inlet pipe still fall outside the auger. Therefore, a further improvement is made: the discharge chamber is equipped with an inclined limiting plate, the lower end of which is connected to the auger's inlet. With this arrangement, the limiting plate and guide plate form a guiding channel, the outlet of which connects to the auger's inlet.

[0022] To prevent the material inside the barrel from flowing out and polluting the environment, and to allow gas to flow out from the air outlet at the top of the barrel, a further improvement is made: a filter cloth is installed at the air outlet at the top of the barrel. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0026] In the diagram: 1. Material cylinder; 2. Inlet; 3. Outlet; 4. Vibrating chamber; 5. Vibrating screen; 6. Fluidization chamber; 7. Fluidization cavity; 8. Material flow chamber; 9. Carbonization vent pipe; 10. Carbonization vent cavity; 11. Falling chamber; 12. Heating wire; 13. Air filling chamber; 14. Air filling pipe; 15. Fan; 16. Side pipe; 17. Discharge chamber; 18. Screwdriver; 19. Baffle plate; 20. Vibrator; 21. Connecting plate; 22. Guide plate; 23. Falling channel; 24. Limiting plate; 25. Filter cloth. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0028] Example 1:

[0029] like Figure 1 As shown, the present invention discloses a sugarcane pulp drying device, including a material cylinder 1 with an inlet 2 at its upper end, through which sugarcane pulp is fed into the material cylinder 1.

[0030] The inner cavity of the material cylinder 1, located below the inlet 2, is divided into multiple interconnected chambers from top to bottom, specifically:

[0031] The vibrating chamber 4 contains a vibrating screen 5, which is driven by a vibrating motor to vibrate, causing sugarcane pulp to flow out through the mesh of the vibrating screen 5. Specifically, a support ring is installed on the inner wall of the vibrating chamber 4 by welding, and multiple springs are installed on the upper end of the support ring. An installation plate is set on the top of the vibrating screen 5 and installed on the upper end of the springs.

[0032] The fluidization chamber 6 has two sets of symmetrically arranged baffle assemblies installed inside. The baffle assembly consists of two V-shaped baffles 19 connected vertically; the open ends of the baffles 19 are connected to the inner wall of the fluidization chamber 6, thus forming an M-shape; the middle part of the baffle assembly forms a V-shape, with its openings facing each other, thus forming a fluidization cavity 7, whose flow area decreases from the center to the upper and lower sides.

[0033] Logistics Room 8, such as Figure 2As shown, a carbonization ventilation pipe 9 is installed on its inner wall. The interior of the carbonization ventilation pipe 9 forms a carbonization ventilation chamber 10, and the exterior forms a falling chamber 11. After the sugarcane pulp flows out of the fluidization chamber 6, part of it falls into the falling chamber 11, and the rest falls into the carbonization ventilation chamber 10. An electric heating wire 12 is installed in the carbonization ventilation chamber 10. By energizing the wire, the sugarcane pulp in the carbonization ventilation chamber 10 is heated to generate ash and biochar.

[0034] Inflation chamber 13, such as Figure 2 As shown, a horizontally arranged air-filling pipe is installed; the air-filling pipe passes through the material cylinder 1 and is connected to the air outlet of the blower 15; the inner end of the air-filling pipe faces the outlet of the material flow chamber 8, mixing sugarcane pulp, ash, and biochar; a vertically arranged side pipe 16 is connected to the air-filling pipe and is connected to the bottom of the carbonization ventilation pipe 9; the upper end of the side pipe 16 has a funnel-shaped structure, which facilitates the ash and biochar to fall into the air-filling pipe and avoids some residue in the carbonization ventilation pipe 9; the upper end of the side pipe 16 and the airflow rise to the fluidization chamber 7 after being heated by the heating wire 12, and form a fluidized state; the thrust generated by the airflow at the air outlet of the blower 15 is less than the gravity of the ash and biochar, so that the ash and biochar can fall from the carbonization ventilation chamber 10 into the air-filling pipe.

[0035] The discharge chamber 17 is equipped with an output port 3, and an auger 18 is installed at the output port 3. The feed inlet of the auger 18 is inserted into the feed cylinder 1, and the mixture of sugarcane pulp, ash and biochar is output from the feed cylinder 1 to the outside.

[0036] A filter cloth 25 is installed at the air outlet at the upper end of the material cylinder 1, allowing the gas inside the material cylinder 1 to flow out through the filter cloth 25. The filter cloth 25 filters the material inside the material cylinder 1, preventing the material from flowing out of the material cylinder 1 and causing environmental pollution.

[0037] Sugarcane pulp enters the feed cylinder 1 through inlet 2 and then falls onto the vibrating screen 5 under gravity. Under the vibration of the vibrating screen 5, it flows out evenly through the mesh, thus increasing the contact area between the sugarcane pulp and the hot air, improving the water removal capacity and efficiency. The air blown by the blower 15 forms two airflow paths. One path passes through the carbonization ventilation chamber 10, absorbing heat generated by the electric heating wire, forming a hot flow that rises upwards to heat the falling sugarcane pulp, reducing its moisture content. Furthermore, the airflow forms a fluidized state in the fluidization chamber 7, increasing the turbulence of the sugarcane pulp during its fall and enhancing the contact time with the airflow, thus improving the water removal effect. The other path flows out from the air outlet pipe, passes through the air filling chamber 13, and flows upwards to carry away the moisture from the sugarcane pulp. Finally, the airflow exits from the feed cylinder 1... The sugarcane pulp flows out from the top; after some sugarcane pulp falls into the carbonization ventilation pipe 9, it is carbonized and releases heat under the action of the electric heating wire, part of which is generated into biochar and part is burned into ash. Then it falls from the bottom of the carbonization ventilation pipe 9 into the air filling pipe and is sprayed out of the air filling pipe with the airflow in the air filling pipe. The biochar and ash have a relatively high temperature, which will heat the airflow in the air filling pipe and increase the airflow temperature. It can also be evenly mixed with the sugarcane pulp filter mud that falls into the falling chamber 11. Biochar has the following two beneficial effects: 1. Biochar can be used as a compost improver, with good stability, and can reduce ammonia emissions during composting; 2. The addition of biochar can increase the maturity and fertility of compost products, expand the microbial community structure during composting, improve metabolic function, and increase the abundance of microorganisms.

[0038] The present invention also has the following two beneficial effects: 1. Simple structure and low manufacturing cost; 2. Since the air volume of the blower 15 is small, there is no need to lift and dry the sugarcane pulp. Therefore, compared with traditional steam drying or electric drying, the energy consumption required by the equipment is low.

[0039] Example 2:

[0040] Compared with Embodiment 1, the difference is that the partition 19 is made of a spring sheet, which is elastic, and a vibrator 20 is installed on the upper back side. The vibrator 20 is an ultrasonic vibrator, which causes the sugarcane pulp to detach from the partition 19 and fall off through its vibration, thereby preventing some sugarcane pulp from accumulating on the upper side of the partition 19.

[0041] Example 3:

[0042] Compared with Example 1, the difference is that the upper end of the carbonization aeration pipe 9 is connected to a connecting plate 21, so that the upper end of the carbonization aeration pipe 9 forms a flared structure, which is used to increase the amount of sugarcane mud entering the carbonization aeration pipe 9.

[0043] Example 4:

[0044] Compared with Embodiment 1, the difference is that the lower end of the carbonization ventilation pipe 9 is also connected to a guide plate 22, the height of which decreases from the carbonization ventilation chamber 10 to the falling chamber 11; the guide plate 22 and the inner wall of the air chamber 13 form a falling channel 23, which is located directly above the feed inlet of the auger 18, and the feed inlet of the auger 18 covers the falling channel 23. The guide plate 22 is used to guide the sugarcane pulp to fall accurately into the auger 18.

[0045] Example 5:

[0046] Compared to Embodiment 4, the difference is that the inner end of the inflation tube is connected to the lower end face of the guide plate 22. This arrangement allows the inflation tube to support the guide plate 22, improving the stability of the installation structure and preventing wobbling. Furthermore, the guide plate 22 also guides the ash and biochar blown out by the inflation tube, facilitating the mixing of the ash, biochar, and sugarcane pulp.

[0047] Example 6:

[0048] Compared to Embodiment 5, the difference is that the guide plate 22 is a perforated plate. When sugarcane pulp falls onto the upper surface of the guide plate 22, it blocks the mesh and adheres to the guide plate 22, ensuring that a layer of sugarcane pulp always accumulates on the upper surface of the guide plate 22. This adsorbs and filters the flue gas generated from the ash and biochar, preventing harmful flue gas from escaping and polluting the environment. Moreover, compared to setting up a separate adsorption and filtration device, the above structure simplifies the structure and reduces costs.

[0049] Example 7:

[0050] Compared with Embodiment Six, the difference is that the discharge chamber 17 is also provided with an inclined limiting plate 24, the lower end of which is connected to the feed inlet of the auger 18. With this arrangement, the limiting plate 24 and the guide plate 22 form a guiding channel, the outlet of which is connected to the feed inlet of the auger 18, preventing the ash and biochar sprayed from the air pipe 14 from flowing to the outside of the auger 18.

[0051] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A sugarcane pulp drying device, characterized in that: It includes a material cylinder (1), with an input port (2) at the upper end and an output port (3) at the lower end. The inner cavity of the material cylinder (1) is provided with the following components from top to bottom: The vibrating chamber (4) is equipped with a vibrating screen (5), which causes the sugarcane pulp to flow out from the mesh of the vibrating screen (5) through vibration. The fluidization chamber (6) is provided with a fluidization cavity (7), the flow area of ​​which decreases from the center to the upper and lower sides; The logistics room (8) is equipped with a carbonization ventilation pipe (9), which forms a carbonization ventilation chamber (10) inside and a falling chamber (11) outside. Part of the sugarcane pulp falls into the falling chamber (11), and the remaining part falls into the carbonization ventilation chamber (10). The carbonization ventilation chamber (10) is equipped with an electric heating wire (12), which heats the sugarcane pulp in the carbonization ventilation chamber (10) to generate ash and biochar. An air filling chamber (13) is equipped with an air filling pipe (14); the air filling pipe (14) passes through the material cylinder (1) and is connected to the air outlet of the blower (15); the inner end of the air filling pipe (14) is directly opposite the outlet of the material flow chamber (8) to mix sugarcane pulp, ash and biochar; a side pipe (16) is connected to the air filling pipe (14) and is connected to the bottom of the carbonization ventilation pipe (9); the airflow rises to the fluidization chamber (7) after being heated by the heating wire (12) and forms a fluidized state; the thrust generated by the airflow at the air outlet of the blower (15) is less than the weight of the ash and biochar, so that the ash and biochar can fall from the carbonization ventilation chamber (10) into the air filling pipe (14); The discharge chamber (17) is equipped with an auger (18) to discharge a mixture of sugarcane pulp, ash and biochar from the feed cylinder (1).

2. The sugarcane pulp drying apparatus according to claim 1, characterized in that: The fluidization chamber (6) is equipped with two sets of symmetrically arranged partition assemblies. The partition assembly consists of two V-shaped partitions (19) connected vertically. The open end of the partition (19) is connected to the inner wall of the fluidization chamber (6) to form an M-shape. The middle part of the partition assembly forms a V-shape with its openings facing each other, thus forming the fluidization cavity (7).

3. The sugarcane pulp drying apparatus according to claim 2, characterized in that: The partition (19) is elastic, and a vibrator (20) is installed on the back side of its upper part, which causes the sugarcane pulp to detach from the partition (19) and fall off through vibration.

4. The sugarcane pulp drying apparatus according to claim 1, characterized in that: The upper end of the carbonization aeration pipe (9) is connected to a connecting plate (21), which makes the upper end of the carbonization aeration pipe (9) form a flared structure to increase the amount of sugarcane mud entering the carbonization aeration pipe (9).

5. The sugarcane pulp drying apparatus according to claim 1, characterized in that: The lower end of the carbonized vent pipe (9) is also connected to a guide plate (22), the height of which decreases from the carbonized vent chamber (10) to the falling chamber (11); The guide plate (22) and the inner wall of the inflation chamber (13) form a falling channel (23), which is located directly above the feed inlet of the auger (18), and the feed inlet of the auger (18) covers the falling channel (23).

6. The sugarcane pulp drying apparatus according to claim 5, characterized in that: The inner end of the inflation tube (14) is connected to the lower end face of the guide plate (22).

7. A sugarcane pulp drying apparatus according to claim 5, characterized in that: The guide plate (22) is a perforated plate, so that a layer of sugarcane mud is always accumulated on the upper surface of the guide plate (22) to adsorb and filter the flue gas generated on the ash and biochar.

8. A sugarcane pulp drying apparatus according to claim 5, characterized in that: The discharge chamber (17) is also provided with an inclined limiting plate (24), the lower end of which is connected to the feed inlet of the auger (18), thereby forming a guiding channel with the guide plate (22), and its outlet is connected to the feed inlet of the auger (18).

9. A sugarcane pulp drying apparatus according to claim 1, characterized in that: A filter cloth (25) is installed at the air outlet at the upper end of the material cylinder (1).

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