Horizontal heat-charcoal co-production furnace based on agricultural and forestry wastes

Abstract

The present application relates to the technical field of agricultural and forestry waste treatment, and provides a horizontal heat-carbon cogeneration furnace based on agricultural and forestry waste, which comprises a furnace body and multiple groups of conveying chain plates arranged in the furnace body, the multiple groups of conveying chain plates are arranged at intervals along the length direction of the furnace body, the output end of a previous group of conveying chain plates is located above the input end of a next group of conveying chain plates, the conveying chain plate comprises a transmission shaft rotatably arranged in the furnace body, the transmission shaft is a hollow shaft, and the outer wall of the transmission shaft is provided with a first air supply port, and the end of the transmission shaft is connected with an air supply pipe through a rotary joint, the first air supply port is used for supplying air required for material combustion into the furnace body, and pyrolysis gas generated by material combustion can be conveyed to a heat-using equipment to provide heat energy externally after being pressurized by an external fan. Through the above technical scheme, the technical problem that the carbonization equipment in the related art cannot accurately supply oxygen to the position of the material, and the oxygen entering the furnace body cannot participate in combustion in the first time, thereby affecting the pyrolysis effect, is solved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of agroforestry waste treatment, and in particular, to a horizontal heat-carbon co-production furnace based on agroforestry waste. BACKGROUND

[0002] With the large-scale development of agriculture and forestry, the amount of agroforestry waste is increasing, and a large amount of waste such as straw and wood chips is emerging. The traditional treatment method is mainly direct incineration. Direct incineration of agroforestry waste not only pollutes the environment, but also wastes resources.

[0003] Using carbonization equipment to treat agroforestry waste is a gradually widely used way. The working principle of the carbonization equipment is to heat the agroforestry waste under the condition of isolation or limitation of oxygen supply. In this process, the material goes through the drying stage, pyrolysis stage and carbonization stage. After the final carbonization reaction is completed, wait for the furnace body to cool down, and then open the discharge port to take out the carbon product, and properly handle the tar and gas generated during the treatment process.

[0004] The traditional carbonization equipment cannot accurately supply oxygen to the place where the material in the furnace body is located, so that the oxygen entering the furnace body cannot participate in combustion at the first time, and the oxygen not at the place where the material is located cannot be fully utilized, which ultimately affects the pyrolysis effect, reduces the carbonization efficiency and product quality, and limits the further development and application of agroforestry waste carbonization treatment technology. In addition, the traditional carbonization equipment lacks measures for reasonable collection and utilization of pyrolysis wood gas, cannot realize external heat energy output, and exists heat energy resource waste.

[0005] Therefore, it is an urgent problem to be solved in the field of agroforestry waste treatment to develop an agroforestry waste carbonization equipment that can accurately supply oxygen and fully utilize oxygen. SUMMARY

[0006] In order to overcome the above defects, the embodiments of the present application provide a horizontal heat-carbon co-production furnace based on agroforestry waste, which solves the technical problem that the carbonization equipment in the related art cannot accurately supply oxygen to the place where the material is located, and the oxygen entering the furnace body cannot participate in combustion at the first time, thereby affecting the pyrolysis effect.

[0007] According to one aspect, at least one embodiment of the present application provides a horizontal heat-charcoal co-production furnace based on agricultural and forestry wastes, comprising a furnace body and a plurality of conveying chain plates arranged in the furnace body, the top and bottom of the furnace body are respectively provided with a feeding port and a discharging port, a plurality of conveying chain plates are arranged along the length direction of the furnace body, the output end of a previous conveying chain plate is located above the input end of a subsequent conveying chain plate, the conveying chain plate comprises a transmission shaft rotatably arranged in the furnace body, the transmission shaft is a hollow shaft and the outer wall of the transmission shaft is provided with a first air supply port, and a gas supply pipe is connected to the end of the transmission shaft through a rotary joint, and the first air supply port is used to supply air required for material combustion in the furnace body.

[0008] For example, the horizontal heat-charcoal co-production furnace based on agricultural and forestry wastes provided by at least one embodiment of the present application further comprises:

[0009] Further comprising a negative pressure heat collection channel, the negative pressure heat collection channel is arranged through the top wall of the furnace body, one end of the negative pressure heat collection channel is located in the furnace body away from the feeding port, and the other end is used to connect a heat utilization unit.

[0010] For example, the horizontal heat-charcoal co-production furnace based on agricultural and forestry wastes provided by at least one embodiment of the present application further comprises:

[0011] A material scattering roller is rotatably arranged in the furnace body, the material scattering roller is located above the conveying chain plate, the outer periphery of the material scattering roller is provided with a plurality of material scattering teeth arranged in a spiral manner, the material scattering teeth are symmetrically arranged in two groups along the middle part of the material scattering roller, the rotation directions of the two groups of material scattering teeth are opposite, and the material scattering teeth can be inserted into a material pile and apply a force to the material pile to scatter the material to both sides of the conveying chain plate or gather the material to the central axis of the conveying chain plate under the driving of the material scattering roller.

[0012] For example, the horizontal heat-charcoal co-production furnace based on agricultural and forestry wastes provided by at least one embodiment of the present application further comprises:

[0013] A plurality of material scattering rollers are arranged along the length direction of the furnace body, and the front and rear adjacent two material scattering rollers are respectively used to apply a force to the material pile to scatter the material to both sides of the conveying chain plate and gather the material to the central axis of the conveying chain plate.

[0014] For example, the horizontal heat-charcoal co-production furnace based on agricultural and forestry wastes provided by at least one embodiment of the present application further comprises:

[0015] The material scattering roller comprises a plurality of roller body modules which are sequentially detachably assembled along the axial direction.

[0016] For example, the horizontal heat-charcoal co-production furnace based on agricultural and forestry wastes provided by at least one embodiment of the present application further comprises:

[0017] The bulk roller is hollow inside and is used to be connected with the air supply unit, and the surface of the bulk roller is provided with a second air supply port used for supplying air required for combustion to the material pile.

[0018] For example, the horizontal heat-carbon co-production furnace based on agricultural and forestry wastes provided by at least one embodiment of the present application further comprises:

[0019] The surface of the bulk roller is provided with a plurality of mounting holes, the bulk teeth are slidingly arranged in the mounting holes, springs are connected between the bulk teeth and the inner wall of the bulk roller, the springs are used to provide a force for the bulk teeth to approach the shaft center of the bulk roller, a supporting inner cylinder is slidingly arranged in the bulk roller in the axial direction, the end of the supporting inner cylinder is provided with a guide conical surface, and the supporting inner cylinder can support the bulk teeth outwardly so that the bulk teeth can project out of the mounting holes.

[0020] For example, the horizontal heat-carbon co-production furnace based on agricultural and forestry wastes provided by at least one embodiment of the present application further comprises:

[0021] The furnace body is provided with a material guide plate, the material guide plate is located below the material inlet and extends downwardly and obliquely to the side close to the conveying chain plate, and is used to guide the material in the material inlet to fall on the conveying chain plate.

[0022] For example, the horizontal heat-carbon co-production furnace based on agricultural and forestry wastes provided by at least one embodiment of the present application further comprises:

[0023] The furnace body is provided with a downwardly extending baffle, the baffle is located above the conveying chain plate, and is used to limit the height of the material pile.

[0024] For example, the horizontal heat-carbon co-production furnace based on agricultural and forestry wastes provided by at least one embodiment of the present application further comprises:

[0025] The adjacent roller body modules are connected through flanges.

[0026] The embodiment of the present application has the following beneficial effects:

[0027] In the present invention, when carbonizing, the feed port at the top of the furnace body is first opened to allow agricultural and forestry waste to be fed into the furnace. Once the feed is complete, the feed port is closed, creating a relatively enclosed space within the furnace body. At this point, an ignition element (such as an electric igniter or gas igniter) extending through the furnace body ignites the material within. Air enters the drive shaft through an air supply pipe and a rotary joint, ultimately exiting through a first air supply port on the outer wall of the drive shaft. Because the first air supply port is located on the drive shaft of the conveyor chain, the exhausted air can pass through the gaps in the upper conveyor chain and be discharged directly upward to the material, achieving precise oxygen supply. Once oxygen enters the furnace body, it can participate in combustion, ensuring full utilization of oxygen. The rotation of the drive shaft evenly distributes the oxygen, ensuring uniform heating of the material during combustion and a sufficient pyrolysis reaction. Within this closed, oxygen-deficient environment, the material undergoes anaerobically combustion without an open flame, sequentially undergoing the drying, pyrolysis, and carbonization stages.

[0028] During the combustion process, conveyor chains, driven by the drive shaft, slowly rotate, transporting the material from one end of the furnace to the other. Because the output of the previous set of conveyor chains is located above the input of the next set, the material naturally falls onto the next set of conveyor chains as it moves to the output end. This process causes the material to flip and become looser, ensuring a more uniform and complete combustion and pyrolysis reaction. Once the carbonization reaction is complete, the furnace cools to a desired temperature, then the discharge port at the bottom of the furnace is opened to discharge the charcoal product. The pyrolysis gases generated by the combustion are pressurized by an external fan and fed into the heat unit, producing charcoal while simultaneously exporting heat energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0030] Figure 1 This is a schematic structural diagram of a horizontal heat-carbon cogeneration furnace based on agricultural and forestry wastes in one embodiment of the present invention;

[0031] Figure 2 for Figure 1 A schematic structural diagram of a horizontal heat-carbon cogeneration furnace based on agricultural and forestry wastes from another angle in an embodiment;

[0032] Figure 3 for Figure 1 Schematic diagram of the internal structure of the furnace body in the embodiment;

[0033] Figure 4 for Figure 1 A schematic structural diagram of a bulk roller in an embodiment of the present invention;

[0034] Figure 5 for Figure 1 Schematic diagram of the internal structure of the roller module in the embodiment;

[0035] Figure 6 for Figure 1 Schematic diagram of the structure of the supporting inner cylinder in the embodiment of FIG.

[0036] In the figure: 1. Furnace body, 2. Conveyor chain plate, 101. Feed port, 102. Discharge port, 3. Drive shaft, 301. First air supply port, 4. Rotary joint, 5. Air supply pipe, 6. Negative pressure heat collection channel, 7. Bulk roller, 8. Bulk teeth, 701. Roller module, 702. Second air supply port, 703. Mounting hole, 9. Spring, 10. Support inner cylinder, 1001. Guide cone, 11. Guide plate, 12. Baffle. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0038] To simplify the drawings, only portions relevant to the invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0039] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0040] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0041] In the description of the present embodiment, the terms "upper", "lower", "left", "right", and other orientation or position relationships shown in the drawings are based on the orientation or position relationships shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0042] In addition, in the description of the present application, the terms "first", "second", and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0043] As shown in Figures 1-6 As shown in FIG. 1, a horizontal heat-carbon co-production furnace based on agricultural and forestry waste in an embodiment of the present application includes a furnace body 1 and a plurality of groups of conveying chain plates 2. The top of one end and the bottom of the other end of the furnace body 1 are respectively and one-to-one provided with a feeding port 101 and a discharging port 102, and the feeding port 101 and the discharging port 102 are both provided with openable and closable gate plates. The feeding port 101 is used to convey agricultural and forestry waste into the furnace body 1, and the discharging port 102 is used to discharge carbon products after the carbonization reaction is completed.

[0044] The plurality of groups of conveying chain plates 2 are arranged in the furnace body 1 along the length direction of the furnace body 1. Each group of conveying chain plates 2 includes a chain wheel, a chain, and a chain plate mounted on the chain. A transmission shaft 3 penetrates the side wall of the furnace body 1 and is rotatably arranged on the furnace body 1 through a bearing seat, is driven to rotate by a motor mounted outside the furnace body 1, and the chain wheel is mounted on the transmission shaft 3. The transmission shaft 3 is a hollow shaft, and the outer wall is uniformly distributed with first gas supply ports 301. The output end of the previous group of conveying chain plates 2 is located above the input end of the next group of conveying chain plates 2 (defining the direction close to the discharging port 102 as the rear direction, and the direction away from the discharging port 102 as the front direction), forming a stepped layout, so that the material is turned over and loosened during the conveying process. The end of the transmission shaft 3 is connected to a gas supply pipe 5 through a rotary joint 4, and the air can be conveyed into the transmission shaft 3 without affecting the rotation of the transmission shaft 3 through the rotary joint 4. One end of the gas supply pipe 5 is connected to the rotary joint 4, and the other end is connected to an air supply unit, such as an air compressor or a fan.

[0045] During carbonization, the feed port 101 at the top of the furnace body 1 is first opened to allow agricultural and forestry waste to be fed into the furnace body 1. Once the feed is complete, the feed port 101 is closed, creating a relatively closed space within the furnace body 1. An ignition element (such as an electric or gas igniter) inserted into the furnace body 1 ignites the material within. Air enters the drive shaft 3 through the air supply pipe 5 and the rotary joint 4, ultimately exiting through the first air supply port 301 on the outer wall of the drive shaft 3. Because the first air supply port 301 is located on the drive shaft 3 between the conveyor chains 2, the exhausted air can pass through the gaps in the upper conveyor chains 2 and be discharged directly upward to the material, ensuring precise oxygen supply. Once oxygen enters the furnace body 1, it can participate in combustion, ensuring full utilization of oxygen. The rotation of the drive shaft 3 evenly distributes the oxygen, ensuring uniform heating of the material during combustion and a thorough pyrolysis reaction. Within this closed, oxygen-deficient environment, the material undergoes anaerobic combustion without an open flame, sequentially undergoing the drying, pyrolysis, and carbonization stages.

[0046] During the combustion process, the conveyor chains 2, driven by the drive shaft 3, slowly rotate, transporting the material from one end of the furnace body 1 to the other. Because the output end of the previous set of conveyor chains 2 is located above the input end of the next set of conveyor chains 2, as the material moves along the conveyor chains 2 to the output end, it naturally falls onto the next set of conveyor chains 2. During this falling process, the material flips and becomes looser, ensuring a more uniform and complete combustion and pyrolysis reaction. After the carbonization reaction is complete, the furnace body 1 cools to a suitable temperature, then the discharge port 102 at the bottom of the furnace body 1 is opened to discharge the charcoal product.

[0047] In some examples, such as Figures 1-3 As shown, the negative pressure heat collection channel 6 is arranged in the furnace body 1. One end of the negative pressure heat collection channel 6 is located in the furnace body 1 away from the feed port 101, and the other end extends out of the furnace body 1 for connecting to a heat-using unit, such as a common boiler and other equipment, to achieve effective reuse of heat energy.

[0048] During the anaerobic combustion of agricultural and forestry waste in the furnace without open flames, a large amount of combustible gas containing heat energy will be generated. The combustible gas generated by the pyrolysis of biomass materials contains components such as carbon monoxide, hydrogen, and methane, which are flammable gases. In this embodiment, the combustible gas can be pressurized and transported to heat-consuming equipment such as boilers, drying furnaces, and thermal oil furnaces through the negative pressure heat collection pipe 6 and the fan arranged on the top of the furnace body 1, so that the equipment can output heat energy to the outside and realize the cogeneration of heat and coal.

[0049] The inlet end of the negative pressure heat collection channel 6 is located at one end of the furnace body 1 away from the material inlet 101, where the material has been sufficiently combusted, and the generated hot energy gas has a high temperature. The negative pressure generated by the fan can suck these high-temperature hot energy gas into the negative pressure heat collection channel 6, and finally transport it to a heat-using unit such as a boiler, thereby realizing the secondary utilization of heat energy and the coordinated production of heat and carbon, and improving resource utilization.

[0050] In some examples, as shown in Figures 3-5 To spread the material in the furnace body 1 and obtain more sufficient combustion and pyrolysis reaction, a plurality of spreader rollers 7 are arranged along the length direction of the furnace body 1. The spreader rollers 7 are rotatably arranged above the conveying chain plates 2, so that the spreader rollers 7 can cover the conveying path of the material on the conveying chain plates 2.

[0051] The circumferential surface of the spreader roller 7 is provided with spreader teeth 8 in a spiral direction. The spreader teeth 8 are symmetrically arranged in two groups along the middle part of the spreader roller 7, and the rotation directions of the two groups of spreader teeth 8 are opposite. This design enables the spreader roller 7 to exert a transverse force on the material pile when rotating, so that the material pile is spread to both sides or gathered in the middle. In order to ensure that the spreader teeth 8 have sufficient pushing effect on the material pile, the linear speed of the spreader roller 7 rotation is greater than the linear speed of the conveying chain plate 2 conveying.

[0052] The two spreader rollers 7 adjacent to each other in the furnace body 1 exert forces on the material pile to spread to both sides and gather in the middle, respectively. For example, the rotation direction of the spreader teeth 8 on the front spreader roller 7 is designed to spread the material to both sides, and the rotation direction of the spreader teeth 8 on the rear spreader roller 7 is designed to gather the material in the middle. This alternative arrangement enables the material to be continuously spread and gathered during the conveying process, thereby promoting the sufficient combustion and pyrolysis reaction of the material.

[0053] When the material is conveyed in the furnace along with the conveying chain plates 2, the spreader roller 7 rotates at a linear speed higher than the conveying speed of the conveying chain plates 2 under the drive of the motor. Since the spreader teeth 8 are distributed in a spiral direction on the circumferential surface of the spreader roller 7, and the rotation directions of the two groups of spreader teeth 8 are opposite, the spreader teeth 8 will gradually insert into the material pile. With the rotation of the spreader roller 7, the spiral spreader teeth 8 will exert a transverse force on the material pile. According to the different rotation directions of the spreader teeth 8, the material pile will be spread to both sides or gathered in the middle. The two spreader rollers 7 adjacent to each other realize the alternative spreading and gathering operation of the material pile through different rotation directions of the spreader teeth 8. The front spreader roller 7 spreads the material pile to both sides, while the rear spreader roller 7 gathers the spread material in the middle, changing the distribution state of the material, so that the material can more fully perform the combustion and pyrolysis reaction in the subsequent conveying process.

[0054] In some examples, as shown in Figure 4As shown, the bulk material roller 7 is composed of a plurality of roller body modules 701 which are sequentially detachably assembled along the axial direction. The bulk material roller 7 is hollow inside, and has a structure similar to the transmission shaft 3 of the conveying chain plate 2. The bulk material roller 7 is connected to the air supply unit to convey air required for combustion. The end of the bulk material roller 7 can also be connected to the air supply unit through the rotary joint 4. The surface of the bulk material roller 7 is uniformly provided with second air supply ports 702. The surface of the bulk material roller 7 is provided with a plurality of mounting holes 703, and the bulk material teeth 8 are slidingly arranged in the mounting holes 703. A spring 9 is connected between the inner wall of the bulk material roller 7 and the bulk material teeth 8, and the spring 9 provides a force for the bulk material teeth 8 to retract into the mounting hole 703. A supporting inner cylinder 10 is slidingly arranged in the bulk material roller 7 along the axial direction, and the end of the supporting inner cylinder 10 has a guide conical surface 1001.

[0055] The bulk material roller 7 is composed of a plurality of roller body modules 701 which are sequentially detachably assembled along the axial direction. When the bulk material teeth 8 in a certain area are damaged, the entire bulk material roller 7 does not need to be replaced, and only the single roller body module 701 with damaged bulk material teeth 8 needs to be disassembled and replaced, thereby reducing maintenance cost and difficulty. In operation, air enters the bulk material roller 7 from the air supply unit, and the air is directly sprayed onto the material pile through the second air supply ports 702, thereby achieving precise air supply to the material pile, conveying oxygen to the area where the material is concentrated, and facilitating full combustion and pyrolysis of the material. When the supporting inner cylinder 10 is inserted into the bulk material roller 7, the guide conical surface 1001 of the supporting inner cylinder 10 first contacts the bulk material teeth 8, and finally the circumferential surface of the supporting inner cylinder 10 outwardly spreads the bulk material teeth 8, so that the bulk material teeth 8 protrude out of the mounting hole 703 and can be normally inserted into the material pile. As the use time increases, the bulk material teeth 8 may be adhered to the material. At this time, the supporting inner cylinder 10 can be pulled out, and the elastic force of the spring 9 makes the bulk material teeth 8 retract into the mounting hole 703. In the retraction process, the inner wall of the mounting hole 703 will scratch the surface of the bulk material teeth 8, thereby scraping off the adhered material, and achieving automatic cleaning of the bulk material teeth 8.

[0056] In some examples, as shown in FIG. 1, the bulk material roller 7 is arranged in the furnace body 1, and the bulk material teeth 8 are arranged on the outer surface of the bulk material roller 7. The bulk material teeth 8 are arranged in the form of a plurality of rows along the circumferential direction of the bulk material roller 7, and the bulk material teeth 8 in each row are arranged in the form of a plurality of columns along the axial direction of the bulk material roller 7. The bulk material teeth 8 in each column are arranged in the form of a plurality of rows along the circumferential direction of the bulk material roller 7. Figure 3 As shown in FIG. 1, in the furnace body 1, a guide plate 11 is arranged between the material inlet 101 and the conveying chain plate 2, and the guide plate 11 has a certain angle with the horizontal plane. When the agricultural and forestry waste enters the furnace body 1 from the material inlet 101, due to the angle between the guide plate 11 and the horizontal plane, the material slides along the guide plate 11 under the action of its own gravity, so that the material is guided onto the conveying chain plate 2, and the material is prevented from being accumulated or scattered near the material inlet 101.

[0057] A baffle 12 is arranged above the conveying chain plate 2. In the process of moving the material along with the conveying chain plate 2, the baffle 12 plays a role in limiting the height of the material pile, so that the material is kept within a suitable height range under the limitation of the baffle 12, which is helpful for the material to better contact with the bulk material teeth 8 and oxygen, and promotes the full performance of the combustion and pyrolysis reaction.

[0058] The adjacent roller body modules 701 are connected by flanges. The end of the roller body module 701 is provided with a flange plate, and a plurality of bolt holes are uniformly distributed on the flange plate. The connection of two roller body modules 701 is realized by screwing nuts on the bolts passing through the bolt holes. When it is necessary to replace a certain roller body module 701, the damaged roller body module 701 can be disassembled from the bulk roller 7 by unscrewing the bolts. The connection mode is simple and reliable, and is convenient for maintenance personnel to perform maintenance work.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A horizontal heat-coal cogeneration furnace based on agricultural and forestry waste, characterized in that: The invention comprises a furnace body (1) and a plurality of conveying chain plates (2) arranged in the furnace body (1), wherein the top and bottom of the furnace body (1) are respectively provided with a feed port (101) and a discharge port (102), and the plurality of conveying chain plates (2) are arranged at intervals along the length direction of the furnace body (1), and the output end of the conveying chain plates (2) of the first group is located above the input end of the conveying chain plates (2) of the second group, and the conveying chain plates (2) include a transmission shaft (3) rotatably arranged in the furnace body (1), the transmission shaft (3) is a hollow shaft, and the outer wall of the transmission shaft (3) has a first air supply port (301), and the end of the transmission shaft (3) is connected to an air supply pipe (5) through a rotary joint (4), and the first air supply port (301) is used to supply air required for material combustion into the furnace body (1); A bulking roller (7) is rotatably provided in the furnace body (1), the bulking roller (7) is located above the conveying chain plate (2), and a spirally arranged bulking tooth (8) is provided on the outer periphery of the bulking roller (7), and two groups of the bulking teeth (8) are symmetrically provided along the middle of the bulking roller (7), and the two groups of the bulking teeth (8) have opposite rotation directions. The bulking teeth (8) can be inserted into the material pile under the drive of the bulking roller (7) and exert a force on the material pile to spread toward both sides of the conveying chain plate (2) or to gather toward the central axis of the conveying chain plate (2); A plurality of the bulking rollers (7) are arranged at intervals along the length direction of the furnace body (1), and two adjacent bulking rollers (7) are used to apply forces to the material pile to disperse toward both sides of the conveying chain plate (2) and to gather toward the central axis of the conveying chain plate (2).

2. The horizontal heat-coal cogeneration furnace based on agricultural and forestry waste according to claim 1, characterized in that: It also includes a negative pressure heat collection channel (6), which is arranged to pass through the top wall of the furnace body (1), one end of the negative pressure heat collection channel (6) is located in the furnace body (1) away from the feed port (101), and the other end is used to connect to a heat unit.

3. The horizontal heat-coal cogeneration furnace based on agricultural and forestry waste according to claim 1, characterized in that: The bulk material roller (7) comprises a plurality of roller modules (701) that are detachably assembled in sequence along the axial direction.

4. The horizontal heat-coal cogeneration furnace based on agricultural and forestry waste according to claim 1, characterized in that: The bulking roller (7) is hollow inside and is used to be connected to an air supply unit. The surface of the bulking roller (7) is provided with a second air supply port (702), and the second air supply port (702) is used to transport air required for combustion to the material pile.

5. The horizontal heat-coal cogeneration furnace based on agricultural and forestry waste according to claim 4, characterized in that: The surface of the bulk material roller (7) has a plurality of mounting holes (703), the bulk material teeth (8) are slidably arranged in the mounting holes (703), a spring (9) is connected between the bulk material teeth (8) and the inner wall of the bulk material roller (7), the spring (9) is used to provide a force for the bulk material teeth (8) to approach the axis of the bulk material roller (7), a supporting inner cylinder (10) is axially slidably arranged in the bulk material roller (7), the end of the supporting inner cylinder (10) has a guiding cone surface (1001), and the supporting inner cylinder (10) can support the bulk material teeth (8) outward so that the bulk material teeth (8) protrude from the mounting holes (703).

6. The horizontal heat-coal cogeneration furnace based on agricultural and forestry waste according to claim 1, characterized in that: A material guide plate (11) is provided in the furnace body (1), and the material guide plate (11) is located below the material inlet (101) and extends obliquely downward toward a side close to the conveying chain plate (2), and is used to guide the material in the material inlet (101) to fall onto the conveying chain plate (2).

7. The horizontal heat-coal cogeneration furnace based on agricultural and forestry waste according to claim 1, characterized in that: A downwardly extending baffle (12) is provided in the furnace body (1); the baffle (12) is located above the conveying chain plate (2) and is used to limit the height of the material pile.

8. The horizontal heat-coal cogeneration furnace based on agricultural and forestry waste according to claim 3, characterized in that: Adjacent roller modules (701) are connected by means of flanges.

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