Feeding device for biomass carbonization

Abstract

The feeding device comprises a feeding cylinder, a feeding port is formed in one end of the feeding cylinder, a discharging port is formed in the other end of the feeding cylinder, a feeding assembly is arranged in the feeding cylinder, a heat exchange pipe is arranged at the position, close to the cylinder wall, of the inner side of the feeding cylinder, and the heat exchange pipe is arranged in a spiral mode. One end of the heat exchange pipe is provided with an air inlet pipe communicated with an inner cavity of the heat exchange pipe, and the other end of the heat exchange pipe is provided with an exhaust pipe communicated with the inner cavity of the heat exchange pipe. According to the feeding device for biomass carbonization, waste gas generated after biomass carbonization is used for preheating biomass, waste heat in smoke can be reasonably utilized, energy loss is reduced, the preheating process and the feeding process are integrated, preheating of the biomass can be achieved in the feeding process, additional procedures are not needed, and the feeding device is convenient to operate and high in practicability. By preheating the biomass, the heat required by biomass carbonization is reduced, the carbonization time is shortened, and the biomass carbonization efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass carbonization devices, in particular to a feeding device for biomass carbonization. Background Art

[0002] Biomass carbonization generally refers to the process in which biomass is slowly decomposed under limited oxygen supply or complete oxygen deficiency and heated to remove volatile components to produce solid coke products. At present, when carbonizing biomass, a feeding component is usually required to transport the biomass into the carbonization furnace. After the biomass is transported into the carbonization furnace, it is preheated and then carbonized. In this process, a large amount of heat is required for biomass carbonization, and the biomass carbonization process takes a long time, resulting in low biomass carbonization efficiency. In addition, some of the waste heat after biomass carbonization will be discharged to the outside along with the flue gas, resulting in energy waste, so there are deficiencies in the biomass carbonization process. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a feeding device for biomass carbonization, which preheats the biomass by using the waste gas after biomass carbonization, can reasonably utilize the waste heat in the flue gas, reduce energy loss, and the preheating process and the feeding process are integrally arranged, so that the biomass can be preheated during the feeding process without additional processes. By preheating the biomass, the heat required for biomass carbonization is reduced and the carbonization time is shortened, thereby improving the biomass carbonization efficiency, and the problems in the background art can be effectively solved.

[0004] To achieve the above purpose, the utility model provides the following technical solution: a feeding device for biomass carbonization, including a feeding cylinder, one end of the feeding cylinder is provided with a feeding port, the other end of the feeding cylinder is provided with a discharging port, a feeding component is arranged in the feeding cylinder, a heat exchange pipe is arranged at a position close to the cylinder wall on the inner side of the feeding cylinder, and the heat exchange pipe is spirally arranged. One end of the heat exchange pipe is provided with an air inlet pipe communicated with its inner cavity, the other end of the heat exchange pipe is provided with an exhaust pipe communicated with its inner cavity, and both the air inlet pipe and the exhaust pipe penetrate and extend to the outside of the feeding cylinder.

[0005] As a preferred technical solution of the utility model, both ends of the feeding cylinder are hermetically arranged, and the feeding cylinder is integrally inclined. The feeding port is arranged close to the bottom end of the feeding cylinder, and the discharging port is arranged close to the top end of the feeding cylinder.

[0006] As a preferred technical solution of the utility model, a biomass storage bin is arranged on the side of the feeding cylinder close to the feeding port, and a feeding hopper communicated with its inner cavity is installed on the side of the biomass storage bin. The feeding hopper is fixed on the side of the feeding cylinder and communicated with the feeding port, and a discharging hopper communicated with the discharging port is installed on the side of the feeding cylinder.

[0007] As a preferred technical solution of the present utility model, the feeding assembly includes a screw conveyor assembly installed in the feeding cylinder, and a driving motor for driving the screw conveyor assembly to rotate is installed at the end of the feeding cylinder.

[0008] As a preferred technical solution of the present utility model, a water inlet pipe is provided at the position of the air inlet pipe outside the feeding cylinder, and the water inlet pipe is installed on the side of the air inlet pipe through a first three-way valve and communicated with the inner cavity of the air inlet pipe. A drain pipe is provided at the position of the exhaust pipe outside the feeding cylinder, and the drain pipe is installed on the side of the exhaust pipe through a second three-way valve and communicated with the inner cavity of the exhaust pipe.

[0009] As a preferred technical solution of the present utility model, a valve is installed on the air inlet pipe, and the air inlet pipe is arranged close to the feed inlet.

[0010] As a preferred technical solution of the present utility model, a protective layer is arranged in the feeding cylinder, the heat exchange pipe is located between the protective layer and the feeding cylinder, and the protective layer is made of heat-dissipating material, and the feeding cylinder is made of heat-insulating material.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. For the feeding device for biomass carbonization exemplified by the present utility model, the biomass stored in the biomass storage bin enters the feeding cylinder through the feed hopper and the feed inlet. The driving motor is controlled to work to drive the screw conveyor assembly to rotate, and the screw conveyor assembly conveys the biomass in the feeding cylinder. When the biomass is conveyed to the position of the discharge hopper, it is discharged through the discharge hopper and enters the external carbonization furnace for carbonization, realizing the feeding of biomass.

[0013] 2. For the feeding device for biomass carbonization exemplified by the present utility model, the waste gas and flue gas generated during the biomass carbonization process are conveyed into the heat exchange pipe through the air inlet pipe, and the flue gas flows in the heat exchange pipe to preheat the biomass in the feeding cylinder, realizing the reasonable utilization of the waste heat in the flue gas. At the same time, preheating the biomass reduces the heat required for biomass carbonization, and the preheating can also reduce the biomass carbonization time, facilitating the carbonization treatment of biomass.

[0014] 3. For the feeding device for biomass carbonization exemplified by the present utility model, the first three-way valve is adjusted to connect the water inlet pipe and the air inlet pipe, and at the same time, the second three-way valve is adjusted to connect the drain pipe and the exhaust pipe. Water is injected into the heat exchange pipe through the water inlet pipe, and when the water flows in the heat exchange pipe, it cleans the impurities and foreign matters in the heat exchange pipe, and the cleaned impurities and foreign matters are discharged from the drain pipe along with the water flow, facilitating the cleaning of the heat exchange pipe. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the present utility model;

[0016] Figure 2 Cross-sectional structural schematic diagram of the present utility model;

[0017] Figure 3 is Figure 2 Enlarged structural schematic diagram at position A in

[0018] Figure 4 is Figure 2 Enlarged structural schematic diagram at position B in

[0019] In the figure: 1 feeding cylinder, 2 biomass storage bin, 3 feed hopper, 4 discharge hopper, 5 auger conveying assembly, 6 drive motor, 7 heat exchange tube, 8 protective layer, 9 intake pipe, 10 exhaust pipe, 11 water inlet pipe, 12 first three-way valve, 13 valve, 14 drain pipe, 15 second three-way valve. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution: a feeding device for biomass carbonization, including a feeding cylinder 1. One end of the feeding cylinder 1 is provided with a feeding port, and the other end is provided with a discharge port. A feeding assembly is arranged inside the feeding cylinder 1. Biomass materials are filled into the feeding cylinder 1 through the feeding port. Under the action of the feeding assembly, the biomass materials are conveyed to the discharge port and discharged through the discharge port, realizing the conveying of the biomass materials. A heat exchange tube 7 is arranged at a position close to the cylinder wall inside the feeding cylinder 1, and the heat exchange tube 7 is arranged in a spiral shape. The feeding assembly is located in the middle of the spirally arranged heat exchange tube 7. During the conveying of the materials by the feeding assembly, the heat exchange tube 7 preheats the conveyed biomass. One end of the heat exchange tube 7 is installed with an intake pipe 9 communicating with its inner cavity, and the other end is installed with an exhaust pipe 10 communicating with its inner cavity. Both the intake pipe 9 and the exhaust pipe 10 penetrate and extend to the outside of the feeding cylinder 1, facilitating the discharge of the flue gas generated during the biomass carbonization process into the heat exchange tube 7 and discharging it from the heat exchange tube 7.

[0022] Both ends of the feeding cylinder 1 are hermetically arranged, and the feeding cylinder 1 is integrally inclined. The feeding port is arranged close to the bottom end of the feeding cylinder 1, and the discharge port is arranged close to the top end of the feeding cylinder 1, facilitating the conveying of biomass materials at a lower position to a higher position, so as to add the materials to the carbonization furnace for carbonization treatment.

[0023] A biomass storage bin 2 is arranged on the side of the feeding cylinder 1 near the feeding port, and a feeding hopper 3 communicating with its inner cavity is installed on the side of the biomass storage bin 2. The feeding hopper 3 is fixed on the side of the feeding cylinder 1 and communicates with the feeding port. A discharging hopper 4 communicating with the discharging port is installed on the side of the feeding cylinder 1. The biomass stored in the biomass storage bin 2 enters the feeding cylinder 1 through the feeding hopper 3 and then through the feeding port, which is convenient for the addition of biomass materials. When the biomass in the feeding cylinder 1 is conveyed to the position of the discharging hopper 4 by the feeding component, it is discharged through the discharging hopper 4 and enters an external carbonization furnace for carbonization.

[0024] The feeding component includes a screw conveyor component 5 installed in the feeding cylinder 1. A driving motor 6 for driving the screw conveyor component 5 to rotate is installed at the end of the feeding cylinder 1. By controlling the driving motor 6 to work, the screw conveyor component 5 is driven to rotate, and the biomass in the feeding cylinder 1 is conveyed by the screw conveyor component 5. It should be noted that the driving motor 6 used in the present utility model is a common electronic component in the prior art, and its working mode and circuit structure are both well-known technologies, which will not be elaborated here. And the driving motor 6 is controlled to work by a switch or a controller arranged outside.

[0025] A water inlet pipe 11 is arranged at the position of the air inlet pipe 9 outside the feeding cylinder 1, and the water inlet pipe 11 is installed on the side of the air inlet pipe 9 through a first three-way valve 12 and communicates with the inner cavity of the air inlet pipe 9. A drain pipe 14 is arranged at the position of the exhaust pipe 10 outside the feeding cylinder 1, and the drain pipe 14 is installed on the side of the exhaust pipe 10 through a second three-way valve 15 and communicates with the inner cavity of the exhaust pipe 10. The first three-way valve 12 is adjusted to connect the water inlet pipe 11 and the air inlet pipe 9, and at the same time, the second three-way valve 15 is adjusted to connect the drain pipe 14 and the exhaust pipe 10. Water is injected into the heat exchange pipe 7 through the water inlet pipe 11. When the water flows in the heat exchange pipe 7, impurities and foreign matters in the heat exchange pipe 7 are cleaned, and the cleaned impurities and foreign matters are discharged from the drain pipe 14 along with the water flow, which is convenient for the cleaning of the heat exchange pipe 7.

[0026] A valve 13 is installed on the air inlet pipe 9. The valve 13 is convenient for controlling the flow rate of the flue gas in the heat exchange pipe 7. The air inlet pipe 9 is arranged near the feeding port, so that the flue gas and the water flow upward from bottom to top, which is convenient for controlling their flow rates.

[0027] A protective layer 8 is arranged in the feeding cylinder 1. The heat exchange pipe 7 is located between the protective layer 8 and the feeding cylinder 1. The protective layer 8 is used for protecting the heat exchange pipe 7 to prevent the biomass materials from wearing the heat exchange pipe 7 during the conveying process. The waste heat rich in the flue gas in the heat exchange pipe 7 radiates to the biomass through the protective layer 8 to realize the preheating treatment of the biomass, and the protective layer 8 is made of a heat-dissipating material, which is convenient for heat transfer. The feeding cylinder 1 is made of a heat-insulating material to reduce heat leakage.

[0028] When in use:

[0029] The biomass stored in the biomass storage bin 2 passes through the feed hopper 3 and enters the feeding cylinder 1 through the feed inlet. The driving motor 6 is controlled to work to drive the auger conveying assembly 5 to rotate, and the auger conveying assembly 5 conveys the biomass in the feeding cylinder 1. When the biomass is conveyed to the position of the discharge hopper 4, it is discharged through the discharge hopper 4 and enters the external carbonization furnace for carbonization, realizing the feeding of the biomass;

[0030] The waste gas and flue gas generated during the carbonization of the biomass are conveyed to the heat exchange tube 7 through the inlet pipe 9. The flue gas flows in the heat exchange tube 7 to preheat the biomass in the feeding cylinder 1, realizing the reasonable utilization of the waste heat in the flue gas. And by preheating the biomass, the heat required for biomass carbonization is reduced. At the same time, the preheating can reduce the carbonization time of the biomass, facilitating the carbonization treatment of the biomass;

[0031] The first three-way valve 12 is adjusted to connect the water inlet pipe 11 and the inlet pipe 9. At the same time, the second three-way valve 15 is adjusted to connect the drain pipe 14 and the exhaust pipe 10. Water is injected into the heat exchange tube 7 through the water inlet pipe 11. When the water flow flows in the heat exchange tube 7, the impurities and foreign objects in the heat exchange tube 7 are cleaned, and the cleaned impurities and foreign objects are discharged from the drain pipe 14 along with the water flow, facilitating the cleaning of the heat exchange tube 7.

[0032] The parts not disclosed in the present utility model are all prior arts, and their specific structures, materials and working principles will not be elaborated in detail. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A feeding device for biomass carbonization, comprising a feeding cylinder (1), characterized in that: One end of the feed cylinder (1) is provided with a feed inlet, the other end of the feed cylinder (1) is provided with a discharge outlet, a feeding assembly is arranged inside the feed cylinder (1), a heat exchange tube (7) is arranged at a position close to the cylinder wall on the inner side of the feed cylinder (1), and the heat exchange tube (7) is arranged in a spiral shape. One end of the heat exchange tube (7) is installed with an intake pipe (9) communicated with its inner cavity, the other end of the heat exchange tube (7) is installed with an exhaust pipe (10) communicated with its inner cavity, and both the intake pipe (9) and the exhaust pipe (10) penetrate and extend to the outside of the feed cylinder (1). An inlet water pipe (11) is arranged at the position of the intake pipe (9) outside the feed cylinder (1), and the inlet water pipe (11) is installed on the side of the intake pipe (9) through a first three-way valve (12) and communicated with the inner cavity of the intake pipe (9). A drain pipe (14) is arranged at the position of the exhaust pipe (10) outside the feed cylinder (1), and the drain pipe (14) is installed on the side of the exhaust pipe (10) through a second three-way valve (15) and communicated with the inner cavity of the exhaust pipe (10).

2. The feeding device for biomass carbonization according to claim 1, wherein: Both ends of the feed cylinder (1) are hermetically arranged, and the feed cylinder (1) is integrally inclined. The feed inlet is arranged close to the bottom end of the feed cylinder (1), and the discharge outlet is arranged close to the top end of the feed cylinder (1).

3. The biomass carbonization feeding device according to claim 1, characterized in that: A biomass storage bin (2) is arranged at a position on the side of the feed cylinder (1) close to the feed inlet, and a feed hopper (3) communicated with its inner cavity is installed on the side of the biomass storage bin (2). The feed hopper (3) is fixed on the side of the feed cylinder (1) and communicated with the feed inlet. A discharge hopper (4) communicated with the discharge outlet is installed on the side of the feed cylinder (1).

4. The biomass carbonization feeding device according to claim 1, characterized in that: The feeding assembly includes a screw conveyor assembly (5) installed inside the feed cylinder (1), and a driving motor (6) for driving the screw conveyor assembly (5) to rotate is installed at the end of the feed cylinder (1).

5. The feeding device for biomass carbonization according to claim 1, characterized in that: A valve (13) is installed on the intake pipe (9), and the intake pipe (9) is arranged close to the feed inlet.

6. The feeding device for biomass carbonization according to claim 1, wherein: A protective layer (8) is arranged inside the feed cylinder (1), the heat exchange tube (7) is located between the protective layer (8) and the feed cylinder (1), and the protective layer (8) is made of a heat dissipation material, and the feed cylinder (1) is made of a heat insulation material.

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