Equipment and process for preparing biomass natural gas through dry-type high-temperature anaerobic fermentation

Abstract

The invention relates to the technical field of biomass energy production, in particular to equipment and a process for preparing biomass natural gas through dry-type high-temperature anaerobic ferment.The equipment comprises a fermentation box body, a gas inlet pipe, a gas outlet pipe, a gas inlet pipe, a gas outlet pipe and a gas outlet pipe, a first frame, a second frame and a third frame are sequentially arranged on the inner wall of the fermentation cavity in a staggered mode in the vertical direction, the material crushing and liquid supplying assembly comprises a material crushing mechanism and a pre-inoculation mixed liquid supplying mechanism, and the material uniformizing and stirring mechanism comprises a material uniformizing mechanism and a stirring frame mechanism. Therefore, the process of preparing the biomass natural gas through dry-type high-temperature anaerobic fermentation is realized, the problems of long retention time and low treatment efficiency are solved, the gas production rate and the production efficiency of the biomass natural gas are improved, and powerful support is provided for popularization and use of clean energy.

Description

Technical Field

[0001] The present invention relates to the technical field of biomass energy production, and in particular to equipment and a process for preparing biomass natural gas by dry high-temperature anaerobic fermentation. Background Art

[0002] With the world's increasing concern about climate change and greenhouse gas emissions, the promotion and use of clean energy has become increasingly important. Biogas, as a renewable energy source, plays an important role in reducing dependence on fossil energy, promoting green and low-carbon energy transformation, and meeting carbon emission reduction needs. Compared with traditional fossil fuels, biogas has broad application prospects in transportation, industry, chemical industry, urban gas and other fields.

[0003] However, there are still many challenges in the current preparation process of biogas. The traditional wet anaerobic fermentation process has problems such as high pretreatment requirements, low load, and difficulty in discharging sludge and liquid. Multi-material anaerobic fermentation, especially dry anaerobic fermentation technology, although it has the advantages of low pretreatment requirements, wide raw material adaptability, small fermentation volume, and low investment, still faces the problems of long residence time and slow processing efficiency when processing solid and semi-solid raw materials. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the purpose of the present invention is to propose an apparatus and process for preparing biomass natural gas by dry high-temperature anaerobic fermentation. The present invention realizes the process of preparing biomass natural gas by dry high-temperature anaerobic fermentation, solves the problems of long residence time and slow processing efficiency, improves the gas production rate and production efficiency of biogas, and provides strong support for the promotion and use of clean energy.

[0006] To achieve the above-mentioned purpose, the present invention proposes a device for preparing biomass natural gas by dry high-temperature anaerobic fermentation, comprising: Fermentation box: It is arranged on the ground, and a fermentation chamber and an exhaust chamber are respectively arranged inside it and are connected to each other. The inner wall of the fermentation chamber is staggered with a first frame, a second frame and a third frame in the vertical direction. The feeding end heights of the first frame, the second frame and the third frame are higher than the discharge end height. The discharge ends of the first frame, the second frame and the third frame are respectively provided with a material paddle rack on the inner sides. The discharge ends of the first frame, the second frame and the third frame are respectively provided with a first guide plate, a second guide plate and an auger-type solid-liquid separation mechanism on the outer sides. The space between the bottom of the third frame and the bottom wall of the fermentation chamber forms a liquid storage chamber. The auger-type solid-liquid separation mechanism and the liquid storage chamber are respectively connected to the discharge pipe and the liquid discharge main pipe arranged on the lower end surface of the fermentation box, and the exhaust chamber is connected to the exhaust pipe symmetrically arranged on the top of the fermentation box; Crushed material and liquid supply assembly: including a crushing mechanism and a pre-inoculation mixing and liquid supply mechanism, the crushing mechanism is arranged on the surface of the fermentation box and is located outside the feed inlet of the fermentation chamber, the pre-inoculation mixing and liquid supply mechanism is arranged on the surface of the fermentation box and is connected to the crushing mechanism; The material mixing and stirring mechanism includes a material mixing mechanism and a stirring frame mechanism. The material mixing mechanism is arranged on the inner wall of the fermentation chamber and is located on the top side of the first frame. The stirring frame mechanism is respectively arranged on the inner walls of the first frame, the second frame and the third frame. The material mixing mechanism is respectively connected to the crushing mechanism and the stirring frame mechanism.

[0007] In addition, the device for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to the application may also have the following additional technical features: Specifically, a mesh frame is fixedly connected to the inner wall of the fermentation chamber, and the mesh frame is located between the second frame and the third frame. The fermentation chamber is connected to the interior of the exhaust chamber through the mesh frame. The discharge end surfaces of the first frame, the second frame and the third frame are all provided with notches.

[0008] The transmission gears are connected to the first gear and the second gear are connected to the transmission gear of the present invention; the transmission gears are connected to the first gear and the second gear are connected to the transmission gear of the present invention; the transmission gears are connected to the first gear and the second gear are connected to the transmission gear of the present invention; the transmission gears are connected to the first gear and the second gear are connected to the transmission gear of the present invention; the transmission gears are connected to the first gear and the second gear are connected to the transmission gear of the present invention; The first conical material box is fixedly connected to the inner wall of the crusher frame and is located on the bottom side of the crushing roller. The inner wall of the first conical material box is rotatably connected to the first discharge roller. The surface of the first conical material box is symmetrically rotatably connected to the discharge drive gear and is connected to the first discharge roller through a first one-way transmission.

[0009] Specifically, the first conical material box, the first frame, the second frame and the third frame are all double-layer hollow structures, and the first conical material box, the first frame, the second frame and the third frame are all made of metal. The first conical material box also includes a desulfurization hot air circulation pipe, and the desulfurization hot air circulation pipe is fixedly connected to the surface of the fermentation box body. One end of the desulfurization hot air circulation pipe is tightly connected to the desulfurization hot air utilization main pipe, ensuring the effective introduction of hot air, and the other end thereof is cleverly connected to the third frame, the second frame, the first frame and the first conical material box in turn. After completing this series of connections, the pipe continues to extend, penetrates the outer wall of the crusher frame, and seamlessly connects with the desulfurization exhaust gas heat energy utilization main pipe, thereby constructing a complete and efficient desulfurization hot air circulation system.

[0010] Specifically, the pre-inoculation mixing liquid supply mechanism includes a tubular metering auger, a spray rack and a transmission bevel gear. The tubular metering auger is evenly and fixedly connected to the surface of the fermentation box body. The liquid inlet pipe of the tubular metering auger passes through the interior of the liquid storage chamber and is connected to the interior of the liquid storage chamber. The discharge pipe of the tubular metering auger passes through the interior of the fermentation chamber and is located on the top side of the first frame. The spray rack is evenly and fixedly connected to the inner wall of the fermentation chamber and is connected to one end of the discharge pipe of the tubular metering auger passing through the interior of the fermentation chamber. The transmission bevel gear is rotatably connected to the top of the tubular metering auger and meshes with the second bevel gear. One end of the central axis of the transmission bevel gear is connected to one end of the auger shaft inside the tubular metering auger.

[0011] Specifically, the material leveling mechanism includes a driving motor, a reciprocating screw, a guide rod, a translation L-shaped slide, a tooth seat, a second conical material frame, an adjusting gear, a first tooth rod and a second tooth rod. The reciprocating screw is rotatably connected to the inner wall of the fermentation chamber and is located between the first frame and the spray frame. The guide rod is symmetrically fixedly connected to the inner wall of the fermentation chamber and is located on the outside of the reciprocating screw. The translation L-shaped slide is threadedly connected to the outer surface of the reciprocating screw and sleeved on the outside of the guide rod. The tooth seat is fixedly connected to the bottom of one end of the translation L-shaped slide and is connected to the stirring frame mechanism. The second conical material frame is fixedly connected to the bottom of the translation L-shaped slide and corresponds to the position of the first conical material box. The feeding port of the second conical material frame The gear train is connected to the second gear of the first gear and the gear is meshed with each other to form a circle which is parallel to the gear of the first gear.

[0012] Specifically, the stirring frame mechanism includes a first stirring frame, a second stirring frame and a third stirring frame, the first stirring frame, the second stirring frame and the third stirring frame are respectively and evenly connected to the inner walls of the first frame, the second frame and the third frame, a driving groove is provided on the surface of the first frame, and a first driving gear is respectively provided on the inner wall of the driving groove corresponding to the position of the first stirring frame and the material stripping frame, one end of the central axis of the first driving gear is respectively connected to the first stirring frame and the material stripping frame, the tooth seat is located in the driving groove and meshed with the first driving gear, the surface of the fermentation box body is rotatably connected to the second driving gear at the position corresponding to the first driving gear, and is connected to the first driving gear, the surface of the fermentation box body is rotatably connected to the second stirring frame and the material stripping frame position corresponding to the third driving gear, and one end of the central axis of the third driving gear is fixedly connected to the fourth driving gear, the third driving gear is connected to the second driving gear through a first synchronous toothed belt, and the surface of the fermentation box body is rotatably connected to the third stirring frame and the material stripping frame position corresponding to the fifth driving gear, and the fifth driving gear is connected to the fourth driving gear through a second synchronous toothed belt.

[0013] Specifically, the stirring frame mechanism also includes an auxiliary stirring mechanism, and the auxiliary stirring mechanism includes a shell, a U-shaped groove, a horizontal cutting frame, an oblique cutting frame, a synchronous gear ring, an upper transmission shaft, a synchronous gear, a horizontal transmission frame, a transmission bevel gear, a side main bevel gear, an oblique main bevel gear, a side auxiliary bevel gear and an oblique auxiliary bevel gear, and the shell is respectively and evenly fixedly connected to the inner walls of the first frame, the second frame and the third frame, and the U-shaped groove is opened at the top of the shell, and the first stirring frame, the second stirring frame and the third stirring frame are respectively rotatably connected to the inner wall of the U-shaped groove, and one end of the first stirring frame, the second stirring frame and the third stirring frame respectively pass through the outside of the shell and are connected to one end of the first driving gear, the third driving gear and the fifth driving gear, the horizontal cutting frame and the oblique cutting frame are respectively and evenly rotated and connected to the top of the shell along the material flow direction, and are located on the outside of the first stirring frame, the second stirring frame and the third stirring frame, and the synchronous gear ring is respectively fixedly connected to the first stirring frame, the second stirring frame and the third stirring frame The agitator frame is located on one end surface of the casing, the upper transmission shaft is rotatably connected to the inner wall of the casing, the horizontal transmission frame is evenly rotatably connected to the inner wall of the casing, and is located on one side of the bottom of the upper transmission shaft, and a synchronous gear is provided at the one end surface of the upper transmission shaft corresponding to the position of the synchronous gear ring, and meshes with each other. The surface of the upper transmission shaft is respectively provided with a transmission bevel gear at the position of the horizontal transmission frame surface, and meshes with each other. The side main bevel gear and the oblique main bevel gear are respectively rotatably connected to the inner wall of the casing, and correspond to the positions of the horizontal cutting frame and the oblique cutting frame. One end of the side main bevel gear is meshed with the side auxiliary bevel gear provided on one end surface of the horizontal transmission frame, and the other end of the side main bevel gear passes through the top of the casing and is fixedly connected to the inner wall of the horizontal cutting frame, one end of the oblique main bevel gear is meshed with the oblique auxiliary bevel gear provided on the other end surface of the horizontal transmission frame, and the other end of the oblique main bevel gear passes through the top of the casing and is fixedly connected to the inner wall of the oblique cutting frame.

[0014] Specifically, the horizontal cutting frame has the same structure as the inclined cutting frame. The horizontal cutting frame includes a rotating drum and two groups of semicircular cutting plates. The rotating drum is rotatably connected to the top of the shell and is fixedly connected to one end of the side main bevel gear that passes through the top of the shell. The semicircular cutting plates are integrally formed in reverse order up and down on the surface of the rotating drum.

[0015] A process for preparing biomass natural gas by dry high-temperature anaerobic fermentation, applied to the above-mentioned equipment for preparing biomass natural gas by dry high-temperature anaerobic fermentation, comprises the following steps: S1: Material pretreatment: The material is cut and crushed by a crushing mechanism, and the operation of the crushing mechanism synchronously drives the operation of the pre-inoculation mixing and liquid supply mechanism, which extracts the biogas slurry in the liquid storage chamber and evenly sprays it in the first frame; S2: Uniformly spreading and stirring and mixing: The material inside the crushing mechanism is quantitatively transported into the fermentation chamber by the material leveling mechanism and evenly spread on the first frame. After spreading, the material is stirred by the stirring frame mechanism, and the material inside the frame is appropriately dispensed by the material dispensing frame, so that the material inside the frame can flow by itself under the action of gravity; S3: High temperature fermentation: connect the desulfurization hot gas circulation pipeline with the desulfurization hot gas utilization main pipeline to guide the hot gas into the third frame, the second frame, the first frame and the first conical material box.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned through practice of the present invention.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes the process of preparing biogas by dry high-temperature anaerobic fermentation, solves the problems of long residence time and slow processing efficiency, improves the gas production rate and production efficiency of biogas, and provides strong support for the promotion and use of clean energy; 2. The present invention is provided with a first frame, a second frame, a third frame, a material-diverting rack, a first guide plate, a second guide plate, and an auger-type solid-liquid separation mechanism. Among them, the feed ends of the first frame, the second frame, and the third frame are arranged to be higher than the discharge ends. This ingenious design allows the material entering these frames to flow naturally to the discharge end by its own gravity, thereby realizing automatic directional transfer of the material. In addition, through the intermittent operation of the material-diverting rack, the material can be accurately transported at a preset rate per unit time. This mechanism not only ensures the sufficiency and effectiveness of the fermentation process, but also realizes the efficient movement of the material, greatly improving the overall efficiency and practicality of use. 3. The present invention is provided with a crushing liquid supply component, which is composed of a crushing mechanism and a pre-inoculation mixing liquid supply mechanism. The crushing mechanism is used to cut and crush the classified materials, adjust the size of the materials, increase the surface area, which is conducive to the attachment and decomposition of microorganisms and can improve the fermentation efficiency. The pre-inoculation mixing liquid supply mechanism and the crushing mechanism operate synchronously, automatically extracting the biogas slurry in the liquid storage chamber and evenly spraying it on the materials. The extraction amount of biogas slurry and the crushing amount of the materials are set according to a set ratio to control the humidity of the materials within an appropriate range. By controlling the humidity, the fermentation efficiency can be improved. In addition, by adding the fermented biogas slurry to the fresh materials, the fermentation efficiency can be quickly improved. The fermentation process can be started quickly, and the fermentation cycle can be shortened. In addition, the temperature of the biogas slurry itself is usually more suitable for fermentation than the added liquid, such as water or other solutions. By adding biogas slurry, the fermentation process can be ensured to proceed within the appropriate temperature range, thereby improving the fermentation efficiency. In addition, compared with solid fermentation materials, biogas slurry has fluidity and can more easily penetrate into the material and form a uniform mixture with the material. This uniform contact and mixing helps to evenly distribute the microorganisms in the material, thereby improving the fermentation efficiency. Biogas slurry also has a significant advantage in occupying space, which allows more materials to be accommodated in a limited fermentation space, thereby improving production efficiency. The present invention provides a material mixing mechanism, which consists of a material mixing mechanism and a stirring frame mechanism. The material mixing mechanism is responsible for accurately conveying the material inside the crushing mechanism into the fermentation chamber in a quantitative manner, and laying it evenly and flatly on the first frame. This design ensures that the material can be quickly and evenly mixed in the subsequent stirring process, thereby significantly improving the fermentation efficiency. Then, the stirring frame mechanism efficiently stirs the laid material, further accelerating the fermentation process. At the same time, in order to optimize the fluidity of the material in the frame, the material diverter frame equipped with the present invention can timely divert an appropriate amount of material inside the frame, and use gravity to promote the natural flow of the material. The coordinated work of the material diverter frame and the stirring frame mechanism not only enhances the stirring effect, but also ensures comprehensive and uniform mixing of the material in the fermentation chamber, further improving the overall stirring quality. The material mixing mechanism of the present invention realizes efficient and precise control of material processing through a series of optimized designs, and provides strong support for the automation and intelligent development of the fermentation industry. 5. The present invention also provides an auxiliary stirring mechanism on the stirring frame mechanism. The design of the auxiliary stirring mechanism reflects the careful consideration of the material handling process. It aims to ensure the uniform distribution of materials through early horizontal cutting to avoid agglomeration affecting the subsequent stirring efficiency. At the same time, after the stirring is completed, further cutting and guiding are performed to optimize the flow direction of the materials, thereby achieving better use effect. 6. The present invention is equipped with a desulfurization hot gas circulation pipeline, which cleverly recovers the hot gas generated during the desulfurization process and reintroduces it into the fermentation box through the circulation pipeline. This design not only reduces energy waste, but also realizes precise control of the internal temperature of the fermentation box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the equipment and process structure for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to the present invention; Figure 2 This is a schematic diagram of the fermentation box structure in the equipment and process for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to the present invention; Figure 3 This is a schematic diagram of the first frame structure of an apparatus and process for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to the present invention; Figure 4 This is a schematic diagram of the structure of the crushed material liquid supply component in the equipment and process for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to the present invention; Figure 5 This is a schematic diagram of the structure of the crushing mechanism in the equipment and process for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to the present invention; Figure 6 This is a schematic diagram of the structure of a material mixing mechanism in an apparatus and process for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to the present invention; Figure 7 This is a schematic diagram of the structure of an auxiliary stirring mechanism in an apparatus and process for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to the present invention; Figure 8 This is a schematic diagram of the upper transmission shaft structure in the equipment and process for preparing biomass natural gas through dry high-temperature anaerobic fermentation according to the present invention.

[0019] As shown in the figure: 1. Fermentation chamber; 11. Fermentation chamber; 12. Exhaust chamber; 13. First frame; 14. Second frame; 15. Third frame; 16. Notch; 17. Material shifter; 18. First guide plate; 19. Second guide plate; 110. Auger-type solid-liquid separation mechanism; 111. Liquid storage chamber; 112. Discharge pipe; 113. Liquid discharge main pipe; 114. Exhaust pipe; 115. Screen frame; 2. Crushed material liquid supply assembly; 21. Crushed material mechanism; 22. Pre-inoculation mixed liquid supply mechanism; 3. Material mixing mechanism; 31. Material mixing mechanism; 32. Mixing frame mechanism; 211, crusher frame; 212, crushing roller; 213, transmission gear; 214, dual-shaft motor; 215, first bevel gear; 216, synchronous transmission rod; 217, second bevel gear; 218, first conical material box; 219, discharge drive gear; 100, motor mounting frame; 200. Desulfurization hot gas circulation pipeline; 221. Tubular metering auger; 222. Spray rack; 223. Transmission main bevel gear; 310, driving motor; 311, reciprocating screw; 312, guide rod; 313, translational L-shaped carriage; 314, tooth holder; 315, second conical material frame; 316, adjustment gear; 317, first gear rod; 318, second gear rod; 321, first stirring frame; 322, second stirring frame; 323, third stirring frame; 324, driving trough; 325, first driving gear; 326, second driving gear; 327, third driving gear; 328, fourth driving gear; 329, first synchronous toothed belt; 330, fifth driving gear; 331, second synchronous toothed belt; 300, auxiliary stirring mechanism; 301, housing; 302, U-shaped groove; 303, horizontal cutting frame; 304, oblique cutting frame; 305, synchronous ring gear; 306, upper transmission shaft; 307, synchronous gear; 308, horizontal transmission frame; 309, transmission auxiliary bevel gear; 3010, side main bevel gear; 3011, oblique main bevel gear; 3012, side auxiliary bevel gear; 3013, oblique auxiliary bevel gear; 3031, rotating drum; 3032, semicircular cutting plate. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention and are not to be construed as limiting the present invention. On the contrary, the embodiments of the present invention include all variations, modifications, and equivalents that fall within the spirit and scope of the appended claims.

[0021] The following describes an apparatus and process for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to an embodiment of the present invention with reference to the accompanying drawings.

[0022] like Figures 1-8 As shown, an apparatus for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to an embodiment of the present invention comprises: The fermentation box body 1 is arranged on the ground, and a fermentation chamber 11 and an exhaust chamber 12 are respectively provided therein, and are connected to each other. The inner wall of the fermentation chamber 11 is staggered with a first frame 13, a second frame 14 and a third frame 15 in sequence along the vertical direction. The feeding end height of the first frame 13, the second frame 14 and the third frame 15 is higher than the discharge end height. The inner sides of the discharge ends of the first frame 13, the second frame 14 and the third frame 15 are respectively provided with a material paddle rack 17, and the outer sides of the discharge ends of the first frame 13, the second frame 14 and the third frame 15 are respectively provided with a first guide plate 18, a second guide plate 19 and an auger-type solid-liquid separation mechanism 110. The space between the bottom of the third frame 15 and the inner bottom wall of the fermentation chamber 11 forms a liquid storage chamber 111. The auger-type solid-liquid separation mechanism 110 and the liquid storage chamber 111 are respectively connected to a discharge pipe 112 and a liquid discharge main pipe 113 provided on the lower end surface of the fermentation box body 1. The exhaust chamber 12 is connected to an exhaust pipe 114 symmetrically provided on the top of the fermentation box body 1; The crushing liquid supply component 2 includes a crushing mechanism 21 and a pre-inoculation mixing liquid supply mechanism 22. The crushing mechanism 21 is arranged on the surface of the fermentation box 1 and is located outside the feed port of the fermentation chamber 11. The pre-inoculation mixing liquid supply mechanism 22 is arranged on the surface of the fermentation box 1 and is connected to the crushing mechanism 21. The material mixing and stirring mechanism 3 includes a material mixing mechanism 31 and a stirring frame mechanism 32. The material mixing mechanism 31 is arranged on the inner wall of the fermentation chamber 11 and is located on the top side of the first frame 13. The stirring frame mechanism 32 is respectively arranged on the inner walls of the first frame 13, the second frame 14 and the third frame 15. The material mixing mechanism 31 is respectively connected to the crushing mechanism 21 and the stirring frame mechanism 32.

[0023] It should be noted that the auger-type solid-liquid separation mechanism 110 has its own motor.

[0024] It should also be noted that the exhaust pipe 114 is connected to an external gas collection device.

[0025] It can be understood that the bottoms of the first frame 13 , the second frame 14 and the third frame 15 are arranged horizontally, and the height of the feeding end of the top of the first frame 13 , the second frame 14 and the third frame 15 is higher than the height of the discharging end.

[0026] Specifically, the present invention realizes the process of preparing biomass natural gas by dry high-temperature anaerobic fermentation, solves the problems of long residence time and slow processing efficiency, improves the gas production rate and production efficiency of biogas, and provides strong support for the promotion and use of clean energy. The present invention sets a first frame 13, a second frame 14, a third frame 15, a material rack 17, a first guide plate 18, a second guide plate 19 and an auger-type solid-liquid separation mechanism 110, wherein the feeding end of the first frame 13, the second frame 14 and the third frame 15 is set to be higher than the discharging end, which An ingenious design enables the materials entering these frames to flow naturally to the discharge end by their own gravity, realizing the automatic directional transfer of the materials. In addition, through the intermittent operation of the material-dispensing rack 17, the materials can be accurately transported at a preset rate per unit time. This mechanism not only ensures the sufficiency and effectiveness of the fermentation process, but also realizes the efficient movement of materials, greatly improving the overall use efficiency and practicality. The present invention provides a crushed material liquid supply component 2, which consists of a crushing mechanism 21 and a pre-inoculated mixed liquid supply mechanism 22, wherein the crushing mechanism 21 is used to The classified materials are cut and crushed to adjust the size of the materials and increase the surface area, which is conducive to the attachment and decomposition of microorganisms and can improve the fermentation efficiency. The pre-inoculation mixing liquid supply mechanism 22 and the crushing mechanism 21 operate synchronously, automatically extracting the biogas slurry in the liquid storage chamber 111 and evenly spraying it on the materials. The amount of biogas slurry extracted and the amount of material crushed are set according to a set ratio to control the humidity of the materials within an appropriate range. By controlling the humidity, the fermentation efficiency can be improved. In addition, by adding fermented biogas slurry to fresh materials, the fermentation process can be quickly started and the fermentation cycle can be shortened. In addition, the temperature of the biogas slurry itself is generally more suitable for fermentation than the added liquid, such as water or other solutions. By adding biogas slurry, the fermentation process can be ensured to proceed within the appropriate temperature range, thereby improving the fermentation efficiency. In addition, compared with solid fermentation products, biogas slurry has fluidity and can more easily penetrate into the materials to form a uniform mixture with the materials. This uniform contact and mixing helps to evenly distribute the microorganisms in the materials, thereby improving the fermentation efficiency. Biogas slurry also has a significant advantage in occupying space, which allows more materials to be accommodated in a limited fermentation space, thereby improving production efficiency.The present invention is provided with a material mixing mechanism 3, which consists of a material mixing mechanism 31 and a stirring frame mechanism 32. The material mixing mechanism 31 is responsible for accurately conveying the material inside the crushing mechanism 21 into the fermentation chamber 11 in a quantitative manner, and laying it evenly and flatly on the first frame 13. This design ensures that the material can be quickly and evenly mixed in the subsequent stirring process, thereby significantly improving the fermentation efficiency. Then, the stirring frame mechanism 32 efficiently stirs the laid material, further accelerating the fermentation process. At the same time, in order to optimize the fluidity of the material in the frame, the present invention is also equipped with a material diverter rack 17, which can timely divert the material inside the frame in an appropriate amount, and use gravity to promote the natural flow of the material. The coordinated work of the material diverter rack 17 and the stirring frame mechanism 32 not only enhances the stirring effect, but also ensures the comprehensive and even mixing of the material in the fermentation chamber 11, further improving The overall mixing quality is improved. The material-leveling and stirring mechanism 3 of the present invention achieves efficient and precise control of material processing through a series of optimized designs, providing strong support for the automated and intelligent development of the fermentation industry. The present invention also provides an auxiliary stirring mechanism 300 on the stirring frame mechanism 32. The design of the auxiliary stirring mechanism 300 reflects careful consideration of the material handling process. It aims to ensure uniform distribution of materials through early horizontal cutting to prevent agglomeration from affecting subsequent mixing efficiency. At the same time, after mixing is completed, further cutting and guiding are performed to optimize the flow direction of the materials, thereby achieving better performance. The present invention also provides a desulfurization hot gas circulation pipeline 200, which cleverly recovers the hot gas generated during the desulfurization process and reintroduces it into the fermentation chamber 1 through a circulation pipeline. This design not only reduces energy waste but also achieves precise control of the internal temperature of the fermentation chamber 1.

[0027] During use, the classified materials are cut and crushed by the crushing mechanism 21, and the operation of the crushing mechanism 21 synchronously drives the pre-inoculation mixing liquid supply mechanism 22 to operate. The pre-inoculation mixing liquid supply mechanism 22 operates to extract the biogas slurry inside the liquid storage chamber 111 and evenly spray it inside the first frame 13. Then, the material inside the crushing mechanism 21 is quantitatively transported to the fermentation chamber 11 through the material leveling mechanism 31, and evenly laid on the first frame 13. After laying, it is stirred by the stirring frame mechanism 32, and the material inside the frame is appropriately dialed out by the material dialing frame 17, so that the material inside the frame can flow by itself under the action of gravity. Then, the desulfurization hot gas circulation pipe 200 is connected to the desulfurization hot gas utilization main pipe, so that the hot gas is introduced into the third frame 15, the second frame 14, the first frame 13 and the first conical material box 218.

[0028] In one embodiment of the present invention, Figure 3As shown, a mesh frame 115 is fixedly connected to the inner wall of the fermentation chamber 11. The mesh frame 115 is located between the second frame 14 and the third frame 15. The fermentation chamber 11 is connected to the interior of the exhaust chamber 12 through the mesh frame 115. The discharge end surfaces of the first frame 13 , the second frame 14 and the third frame 15 are all provided with a notch 16 .

[0029] Specifically, a mesh frame 115 is provided to facilitate the fermentation gas inside the fermentation chamber 11 to enter the exhaust chamber 12, and then be discharged from the exhaust chamber 12 to the external gas collection equipment through the exhaust pipe 114 for collection. A notch 16 is provided to facilitate the material to be pushed out of the frame under the movement of the material pusher rack 17.

[0030] In one embodiment of the present invention, Figure 4-Figure 5 As shown, the crushing mechanism 21 includes a crushing frame 211, a crushing roller 212, a transmission gear 213, a dual-axis motor 214, a first bevel gear 215, a synchronous transmission rod 216, a second bevel gear 217, a first conical material box 218 and a discharge drive gear 219. The crushing frame 211 is fixedly connected to the surface of the fermentation box 1 and is located outside the feed port of the fermentation chamber 11. The crushing rollers 212 are symmetrically rotated in opposite directions and are connected to the inner wall of the crushing frame 211. The transmission gears 213 are symmetrically rotated and connected to the surface of the crushing frame 211 and mesh with each other. The central axes of the two sets of transmission gears 213 are respectively fixedly connected to the central axes of the two sets of crushing rollers 212. The two sets The outside of the transmission gear 213 is fixedly connected to the motor mounting frame 100, the dual-axis motor 214 is fixedly connected to the inner wall of the motor mounting frame 100, the first bevel gear 215 is rotatably connected to the surface of the motor mounting frame 100, and is connected to one group of output ends of the dual-axis motor 214, the other group of output ends of the dual-axis motor 214 is fixedly connected to the surface of one group of transmission gears 213, the synchronous transmission rod 216 is rotatably connected to the surface of the fermentation box 1, the second bevel gear 217 is evenly fixedly connected to the surface of the synchronous transmission rod 216, and is connected to the pre-inoculation mixing liquid supply mechanism 22, wherein a group of second bevel gears 217 are meshed with the first bevel gear 215; The first conical material box 218 is fixedly connected to the inner wall of the crusher frame 211 and is located on the bottom side of the crushing roller 212. The inner wall of the first conical material box 218 is rotatably connected to the first discharge roller. The surface of the first conical material box 218 is symmetrically rotatably connected to the discharge drive gear 219, and is connected to the first discharge roller through a first one-way transmission.

[0031] Specifically, the structure and connection relationship of the crushing mechanism 21 are further explained. When in use, the dual-axis motor 214 operates according to the instruction. The dual-axis motor 214 drives one set of transmission gears 213 and the first bevel gear 215 to rotate synchronously. The rotation of the transmission gear 213 drives the other set of transmission gears 213 to rotate synchronously. The rotation of the two sets of transmission gears 213 drives the two sets of crushing rollers 212 to rotate in the opposite direction to crush the material. The crushed material falls into the first conical material box 218 for collection. Since the first conical material box 218 is transported with desulfurized hot gas, the material can be collected in advance. The material is heated to facilitate subsequent fermentation and improve fermentation efficiency. The first discharge roller on the inner wall of the first conical material box 218 can be driven to rotate by reverse rotation of the discharge drive gear 219 to realize the discharge operation. The rotation of the first bevel gear 215 also synchronously drives the second bevel gear 217 and the synchronous transmission rod 216 to rotate. The rotation of the second bevel gear 217 synchronously drives the main transmission bevel gear 223 to rotate. The main transmission bevel gear 223 rotates at a set rate, thereby ensuring that the amount of liquid delivered by the tubular metering auger 221 is adapted to the amount of crushing. By spraying a set amount of liquid, the material humidity can be increased, which is convenient for subsequent material fermentation.

[0032] In one embodiment of the present invention, Figure 1 and Figure 3 As shown, the first conical material box 218, the first frame 13, the second frame 14 and the third frame 15 are all double-layer hollow structures. The first conical material box 218, the first frame 13, the second frame 14 and the third frame 15 are all made of metal. The first conical material box 218 also includes a desulfurization hot air circulation pipe 200, which is fixedly connected to the surface of the fermentation box body 1. One end of the desulfurization hot air circulation pipe 200 is tightly connected to the desulfurization hot air utilization main pipe, ensuring the effective introduction of hot air, and the other end thereof is cleverly connected to the third frame 15, the second frame 14, the first frame 13 and the first conical material box 218 in turn. After completing this series of connections, the pipe continues to extend, penetrates the outer wall of the crusher frame 211, and seamlessly connects with the desulfurization exhaust gas heat energy utilization main pipe, thereby constructing a complete and efficient desulfurization hot air circulation system.

[0033] Specifically, the double-layer hollow structure facilitates the transportation of desulfurized hot air, and the metal material facilitates heat conduction, which can quickly increase the internal temperature of the fermentation box 1 and accelerate the fermentation efficiency. The temperature of the hot air after desulfurization is around 50°, which is just suitable for high-temperature fermentation. There is no need to cool it down, which realizes the reuse of heat energy and effectively saves resources. The transportation order is according to the third frame 15, the second frame 14, the first frame 13 and the first conical material box 218, which is in line with the actual fermentation progress and has a good use effect.

[0034] In one embodiment of the present invention, Figure 4As shown, the pre-inoculation mixing liquid supply mechanism 22 includes a tubular metering auger 221, a spray rack 222 and a transmission main bevel gear 223. The tubular metering auger 221 is evenly fixedly connected to the surface of the fermentation box body 1. The liquid inlet pipe of the tubular metering auger 221 passes through the interior of the liquid storage chamber 111 and is connected to the interior of the liquid storage chamber 111. The discharge pipe of the tubular metering auger 221 passes through the interior of the fermentation chamber 11 and is located on one side of the top of the first frame 13. The spray rack 222 is evenly fixedly connected to the inner wall of the fermentation chamber 11 and is connected to one end of the discharge pipe of the tubular metering auger 221 passing through the interior of the fermentation chamber 11. The transmission main bevel gear 223 is rotatably connected to the top of the tubular metering auger 221 and meshes with the second bevel gear 217. One end of the central axis of the transmission main bevel gear 223 is connected to one end of the auger shaft inside the tubular metering auger 221.

[0035] It should be noted that the liquid inlet pipe and the liquid discharge pipe of the tubular metering auger 221 are both arranged obliquely. The liquid inlet pipe is arranged obliquely upward so that the liquid can easily enter the bottom of the tubular metering auger 221, and the liquid discharge pipe is arranged obliquely downward to facilitate liquid discharge.

[0036] Specifically, the structure and connection relationship of the pre-inoculation mixing liquid supply mechanism 22 are further explained. When in use, the second bevel gear 217 rotates synchronously with the fixed transmission main bevel gear 223, and the rotation of the transmission main bevel gear 223 synchronously drives the auger to rotate. The rotation of the auger transports the liquid at the bottom of the tubular metering auger 221 to the top, and discharges it into the spray rack 222 through the drain pipe, and is evenly sprayed into the first frame 13 through the spray rack 222.

[0037] In one embodiment of the present invention, Figure 6When the mixing rack 31 is in the working state, the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack 31 is in the working state, and the mixing rack The feed port of the conical material frame 315 and the discharge port of the first conical material box 218 are at the same horizontal plane. The inner wall of the second conical material frame 315 is rotatably connected to the second discharge roller. The surface of the second conical material frame 315 is symmetrically rotatably connected to the adjusting gear 316 and is connected to the second discharge roller through a second one-way transmission. The first gear rod 317 is symmetrically fixedly connected to the inner wall of the fermentation chamber 11 and is located on the bottom side of the adjusting gear 316. The adjusting gear 316 is meshed with the teeth on the surface of the first gear rod 317. The second gear rod 318 is symmetrically fixedly connected to the surface of the second conical material frame 315 and corresponds to the position of the discharge drive gear 219. One end of the second gear rod 318 passes through the interior of the feed and crushing frame 211 and is meshed with the discharge drive gear 219. The drive motor 310 is fixedly connected to the surface of the fermentation box body 1 and is connected to one end of the reciprocating screw rod 311.

[0038] It should be noted that the size of the feed opening of the second conical material frame 315 is larger than the size of the discharge opening of the first conical material box 218 .

[0039] After the gear 314 is in the working state, the gear 314 can be turned to the working state, and the gear 314 can be turned to the working state after the gear 314 is turned to the working state, thereby the gear 314 can be turned to the working state after the gear 314 is turned to the working state. In the engaged state, since the first one-way transmission is provided, the first discharge roller in this state will not rotate to discharge material. When the second conical material frame 315 starts to reset, the rotation of the discharge drive gear 219 will drive the first discharge roller to rotate through the first one-way transmission and start discharging. When the second gear rod 318 is separated from the discharge drive gear 219, the first discharge roller is in a closed state and stops discharging. During the reset process of the second conical material frame 315, since the second one-way transmission is provided and the transmission can only be realized when the second conical material frame 315 is reset, the adjustment gear 316 synchronously drives the second discharge roller to rotate, and the second discharge roller rotates intermittently to discharge material, so that the material is more evenly laid inside the first frame 13, which is convenient for subsequent stirring operations and can further improve the stirring effect.

[0040] In one embodiment of the present invention, Figure 1 and Figure 3As shown, the stirring frame mechanism 32 includes a first stirring frame 321, a second stirring frame 322 and a third stirring frame 323. The first stirring frame 321, the second stirring frame 322 and the third stirring frame 323 are respectively and evenly connected to the inner walls of the first frame 13, the second frame 14 and the third frame 15. A driving groove 324 is provided on the surface of the first frame 13. A first driving gear 325 is respectively provided at the inner wall of the driving groove 324 corresponding to the position of the first stirring frame 321 and the material digging frame 17. One end of the central axis of the first driving gear 325 is respectively connected to the first stirring frame 321 and the material digging frame 17. The tooth seat 314 is located in the driving groove 324 and is meshed with the first driving gear 325. The second driving gear 326 is rotatably connected to the position corresponding to the first driving gear 325, and is connected to the first driving gear 325. The third driving gear 327 is rotatably connected to the positions corresponding to the second stirring rack 322 and the material rack 17 on the surface of the fermentation box 1, and the fourth driving gear 328 is fixedly connected to one end of the central axis of the third driving gear 327. The third driving gear 327 is connected to the second driving gear 326 through a first synchronous toothed belt 329. The fifth driving gear 330 is rotatably connected to the positions corresponding to the third stirring rack 323 and the material rack 17 on the surface of the fermentation box 1, and the fifth driving gear 330 is connected to the fourth driving gear 328 through a second synchronous toothed belt 331.

[0041] Specifically, the structure and connection relationship of the stirring rack mechanism 32 are further explained. When in use, the tooth seat 314 contacts and meshes with the first driving gear 325 during the movement, and synchronously drives the first driving gear 325 to rotate. The rotation of the first driving gear 325 synchronously drives the first stirring rack 321, the material digging rack 17 corresponding to the position of the first stirring rack 321, and the second driving gear 326 to rotate. The first stirring rack 321 rotates to stir the material inside the first frame 13, and the fermentation efficiency is improved by stirring. The rotation of the material digging rack 17 diverts an appropriate amount of material out of the first frame 13, leaving space for subsequent materials, and also facilitates the inside of the first frame 13. The material changes its position according to gravity flow, and the stirring effect is further improved by cooperating with the first stirring frame 321. The expelled material falls on the starting end position of the second frame 14 under the action of gravity and after being guided by the first guide plate 18. The second driving gear 326 rotates and drives the third driving gear 327 to rotate synchronously through the first synchronous toothed belt 329. The rotation of the third driving gear 327 synchronously drives the second stirring frame 322, the material digging frame 17 corresponding to the position of the second stirring frame 322, and the fourth driving gear 328 to rotate. The second stirring frame 322 rotates to stir the material inside the second frame 14, and the fermentation efficiency is improved by stirring. The rotation of the material digging frame 17 will transfer an appropriate amount of The material is pushed out of the second frame 14 to leave space for the subsequent material, and it is also convenient for the material inside the second frame 14 to change its position according to gravity flow. By cooperating with the second stirring frame 322, the stirring effect is further improved. The pushed-out material falls on the starting end position of the third frame 15 under the action of gravity and after being guided by the second guide plate 19. The fourth driving gear 328 rotates and drives the fifth driving gear 330 to rotate synchronously through the second synchronous toothed belt 331. The rotation of the fifth driving gear 330 synchronously drives the third stirring frame 323 and the material-pickup frame 17 corresponding to the position of the third stirring frame 323 to rotate. The third stirring frame 323 rotates to stir the material inside the third frame 15 Stirring improves the fermentation efficiency by stirring. The rotation of the material-shifting rack 17 shifts an appropriate amount of material out of the third frame 15, leaving space for subsequent materials. It also facilitates the material inside the third frame 15 to change position according to gravity flow. By cooperating with the third stirring rack 323, the stirring effect is further improved. The shifted material falls into the interior of the auger-type solid-liquid separation mechanism 110 under the action of gravity, and the solid therein is transported to the discharge pipe 112 by the auger, and then transported to the next process by the discharge pipe 112. The liquid therein falls into the liquid storage chamber 111 through the filter hole at the bottom of the auger-type solid-liquid separation mechanism 110 for collection. When there is too much liquid, it can be discharged through the drainage main pipe 113.

[0042] In one embodiment of the present invention, Figure 7-Figure 8As shown, the stirring frame mechanism 32 also includes an auxiliary stirring mechanism 300, which includes a shell 301, a U-shaped groove 302, a horizontal cutting frame 303, an inclined cutting frame 304, a synchronous ring gear 305, an upper transmission shaft 306, a synchronous gear 307, a horizontal transmission frame 308, a transmission sub-bevel gear 309, a side main bevel gear 3010, an inclined main bevel gear 3011, a side auxiliary bevel gear 3012 and an inclined auxiliary bevel gear 3013. The shell 301 is evenly fixedly connected to the inner walls of the first frame 13, the second frame 14 and the third frame 15 respectively. The U-shaped groove 302 is opened at the top of the shell 301. The first stirring The mixing frame 321, the second mixing frame 322 and the third mixing frame 323 are respectively rotatably connected to the inner wall of the U-shaped groove 302, and one end of the first mixing frame 321, the second mixing frame 322 and the third mixing frame 323 respectively pass through the outside of the shell 301 and are connected to the first driving gear 325, the third driving gear 327 and the fifth driving gear 330. The horizontal cutting frame 303 and the oblique cutting frame 304 are respectively evenly rotated along the material flow direction and connected to the top of the shell 301, and are located outside the first mixing frame 321, the second mixing frame 322 and the third mixing frame 323. The synchronous gear ring 305 is fixedly connected to the first mixing frame 321, the second mixing frame 322 and the third mixing frame 323. The frame 321, the second stirring frame 322 and the third stirring frame 323 are located on one end surface of the interior of the shell 301, the upper transmission shaft 306 is rotatably connected to the inner wall of the shell 301, the horizontal transmission frame 308 is evenly rotatably connected to the inner wall of the shell 301, and is located on one side of the bottom of the upper transmission shaft 306, and a synchronous gear 307 is provided at the position corresponding to the position of the synchronous gear ring 305 on the surface of one end of the upper transmission shaft 306, and they are meshed with each other. The surface of the upper transmission shaft 306 and the surface of the horizontal transmission frame 308 are respectively provided with transmission sub-bevel gears 309, which are meshed with each other. The side main bevel gear 3010 and the oblique main bevel gear 3011 They are respectively rotatably connected to the inner wall of the shell 301 and correspond to the positions of the horizontal cutting frame 303 and the oblique cutting frame 304. One end of the side main bevel gear 3010 is engaged with the side auxiliary bevel gear 3012 set on the surface of one end of the horizontal transmission frame 308. The other end of the side main bevel gear 3010 passes through the top of the shell 301 and is fixedly connected to the inner wall of the horizontal cutting frame 303. One end of the oblique main bevel gear 3011 is engaged with the oblique auxiliary bevel gear 3013 set on the surface of the other end of the horizontal transmission frame 308. The other end of the oblique main bevel gear 3011 passes through the top of the shell 301 and is fixedly connected to the inner wall of the oblique cutting frame 304.

[0043] Specifically, the structure and connection relationship of the auxiliary stirring mechanism 300 are further explained. The design of the auxiliary stirring mechanism 300 does reflect careful consideration of the material handling process. It aims to ensure uniform distribution of materials through early horizontal cutting to avoid agglomeration affecting subsequent stirring efficiency. At the same time, after the stirring is completed, further cutting and guiding are performed to optimize the flow direction of the material.

[0044] When in use, the first stirring frame 321, the second stirring frame 322 and the third stirring frame 323 rotate synchronously to drive the synchronous ring gear 305 to rotate, the synchronous ring gear 305 rotates synchronously to drive the synchronous gear 307 and the upper transmission shaft 306 to rotate, the upper transmission shaft 306 rotates to synchronously drive the horizontal transmission frame 308, the side auxiliary bevel gear 3012 and the oblique auxiliary bevel gear 3013 to rotate through the transmission sub-bevel gear 309, the side auxiliary bevel gear 3012 and the oblique auxiliary bevel gear 3013 rotate synchronously to drive the side main bevel gear 3010 and the oblique main bevel gear 3011 to rotate, and the side The main bevel gear 3010 and the oblique main bevel gear 3011 rotate synchronously to drive the horizontal cutting frame 303 and the oblique cutting frame 304 to rotate. When the logistics moves, it first passes through the position of the horizontal cutting frame 303, is horizontally sheared by the horizontal cutting frame 303, and then moves to the position of the stirring frame, is stirred by the stirring frame, and is transported to the position of the oblique cutting frame 304 for secondary cutting after the stirring is completed. Since the oblique cutting frame 304 is set obliquely, the oblique design not only realizes oblique cutting, but also can guide the material to make it move in the set direction, and the use effect is good.

[0045] In one embodiment of the present invention, Figure 7-Figure 8 As shown, the horizontal cutting frame 303 has the same structure as the oblique cutting frame 304. The horizontal cutting frame 303 includes a rotating drum 3031 and two sets of semicircular cutting plates 3032. The rotating drum 3031 is rotatably connected to the top of the shell 301 and is fixedly connected to one end of the side main bevel gear 3010 that passes through the top of the shell 301. The semicircular cutting plates 3032 are integrally formed in reverse order up and down and are set on the surface of the rotating drum 3031.

[0046] Specifically, the structure and connection relationship of the horizontal cutting frame 303 and the inclined cutting frame 304 are further explained. The horizontal cutting frame 303 realizes the horizontal cutting function of the material through its unique rotating drum 3031 and semicircular cutting plate 3032 design. This design not only improves the uniformity and stirring efficiency of the material, but also helps to optimize the flow direction of the material. At the same time, due to the wear-resistant material and the up and down reverse setting of the semicircular cutting plate 3032, the horizontal cutting frame 303 can maintain good cutting effect and stability during long-term use. When in use, the side main bevel gear 3010 rotates synchronously to drive the rotating drum 3031 to rotate, and the rotating drum 3031 rotates synchronously to drive the two sets of semicircular cutting plates 3032 to rotate. Since the two sets of semicircular cutting plates 3032 are set up in reverse, they can achieve cutting while also playing a certain material guiding role, and the use effect is good.

[0047] A process for preparing biomass natural gas by dry high-temperature anaerobic fermentation, which is applied to the above-mentioned equipment for preparing biomass natural gas by dry high-temperature anaerobic fermentation, comprises the following steps: S1: Material pretreatment: The material is cut and crushed by the crushing mechanism 21. The operation of the crushing mechanism 21 synchronously drives the operation of the pre-inoculation mixing and liquid supply mechanism 22. The pre-inoculation mixing and liquid supply mechanism 22 extracts the biogas slurry in the liquid storage chamber 111 and evenly sprays it in the first frame 13; S2: Uniformly spread the material and stir and mix it: The material inside the crushing mechanism 21 is quantitatively transported to the fermentation chamber 11 by the material leveling mechanism 31 and evenly spread on the first frame 13. After spreading, the material is stirred by the stirring frame mechanism 32, and the material inside the frame is appropriately spread out by the material spreading frame 17, so that the material inside the frame can flow by gravity. S3: High-temperature fermentation: Connect the desulfurization hot gas circulation pipeline 200 to the desulfurization hot gas utilization main pipeline, so that the hot gas is introduced into the third frame 15, the second frame 14, the first frame 13 and the first conical material box 218.

[0048] In summary, the present invention provides an apparatus and process for preparing biomass natural gas by dry high-temperature anaerobic fermentation. The present invention realizes the process of preparing biomass natural gas by dry high-temperature anaerobic fermentation, solves the problems of long residence time and slow processing efficiency, improves the gas production rate and production efficiency of biogas, and provides strong support for the promotion and use of clean energy.

[0049] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0050] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0051] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A device for preparing biomass natural gas by dry high-temperature anaerobic fermentation, characterized in that: include: A fermentation box (1) is arranged on the ground, and has a fermentation chamber (11) and an exhaust chamber (12) arranged therein, which are connected to each other. A first frame (13), a second frame (14) and a third frame (15) are arranged on the inner wall of the fermentation chamber (11) in a staggered manner in the vertical direction. The height of the feeding end of the first frame (13), the second frame (14) and the third frame (15) is higher than the height of the discharging end. A material shifting rack (17) is arranged on the inner side of the discharging end of the first frame (13), the second frame (14) and the third frame (15). A first guide plate (18), a second guide plate (19) and an auger-type solid-liquid separation mechanism (110) are respectively arranged on the outer sides of the discharge ends of the third frame (14) and the fermentation chamber (15); a liquid storage chamber (111) is formed in the space between the bottom of the third frame (15) and the inner bottom wall of the fermentation chamber (11); the auger-type solid-liquid separation mechanism (110) and the liquid storage chamber (111) are respectively connected to a discharge pipe (112) and a liquid discharge main pipe (113) arranged on the lower end surface of the fermentation chamber (1); and the exhaust chamber (12) is connected to an exhaust pipe (114) symmetrically arranged on the top of the fermentation chamber (1); A material crushing and liquid supply assembly (2): comprising a material crushing mechanism (21) and a pre-inoculation mixing and liquid supply mechanism (22), wherein the material crushing mechanism (21) is arranged on the surface of the fermentation box (1) and is located outside the feed inlet of the fermentation chamber (11), and the pre-inoculation mixing and liquid supply mechanism (22) is arranged on the surface of the fermentation box (1) and is connected to the material crushing mechanism (21); The material mixing and stirring mechanism (3) comprises a material mixing mechanism (31) and a stirring frame mechanism (32), wherein the material mixing mechanism (31) is arranged on the inner wall of the fermentation chamber (11) and is located on one side of the top of the first frame (13), and the stirring frame mechanism (32) is respectively arranged on the inner walls of the first frame (13), the second frame (14) and the third frame (15), and the material mixing mechanism (31) is respectively connected to the material crushing mechanism (21) and the stirring frame mechanism (32).

2. The equipment for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to claim 1, characterized in that: A mesh frame (115) is fixedly connected to the inner wall of the fermentation chamber (11), the mesh frame (115) is located between the second frame (14) and the third frame (15), and the fermentation chamber (11) is connected to the interior of the exhaust chamber (12) through the mesh frame (115); The discharge end surfaces of the first frame (13), the second frame (14) and the third frame (15) are all provided with a notch portion (16).

3. The equipment for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to claim 1, characterized in that: The crushing mechanism (21) comprises a crushing frame (211), crushing rollers (212), a transmission gear (213), a double-shaft motor (214), a first bevel gear (215), a synchronous transmission rod (216), a second bevel gear (217), a first conical material box (218) and a discharge drive gear (219); the crushing frame (211) is fixedly connected to the surface of the fermentation box (1) and is located outside the feed inlet of the fermentation chamber (11); the crushing rollers (212) are symmetrically connected to the inner wall of the crushing frame (211) for rotation in opposite directions; the transmission gears (213) are symmetrically connected to the surface of the crushing frame (211) for rotation and mesh with each other; the central axes of the two groups of transmission gears (213) are respectively fixedly connected to the central axes of the two groups of crushing rollers (212); the two groups of The outer side of the transmission gear (213) is fixedly connected to a motor mounting frame (100), the dual-axis motor (214) is fixedly connected to the inner wall of the motor mounting frame (100), the first bevel gear (215) is rotatably connected to the surface of the motor mounting frame (100) and is connected to one group of output ends of the dual-axis motor (214), the other group of output ends of the dual-axis motor (214) is fixedly connected to the surface of one group of transmission gears (213), the synchronous transmission rod (216) is rotatably connected to the surface of the fermentation box (1), the second bevel gear (217) is evenly fixedly connected to the surface of the synchronous transmission rod (216), and is connected to the pre-inoculation mixing liquid supply mechanism (22), and one group of the second bevel gears (217) is meshed with the first bevel gear (215); The first conical material box (218) is fixedly connected to the inner wall of the crushing machine frame (211) and is located on one side of the bottom of the crushing roller (212); the inner wall of the first conical material box (218) is rotatably connected to the first discharge roller; the surface of the first conical material box (218) is symmetrically rotatably connected to the discharge drive gear (219) and is connected to the first discharge roller via a first one-way transmission.

4. The equipment for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to claim 3, characterized in that: The first conical material box (218), the first frame (13), the second frame (14) and the third frame (15) are all double-layer hollow structures. The first conical material box (218), the first frame (13), the second frame (14) and the third frame (15) are all made of metal. The first conical material box (218) also includes a desulfurization hot air circulation pipeline (200). The desulfurization hot air circulation pipeline (200) is fixedly connected to the surface of the fermentation box (1). One end of the desulfurization hot air circulation pipeline (200) is closely connected to the desulfurization hot air utilization main pipeline to ensure the effective introduction of hot air. The other end of the desulfurization hot air circulation pipeline (200) is cleverly connected to the third frame (15), the second frame (14), the first frame (13) and the first conical material box (218) in sequence. After completing this series of connections, the pipeline continues to extend, penetrates the outer wall of the crusher frame (211), and is seamlessly connected to the desulfurization waste gas heat energy utilization main pipeline, thereby constructing a complete and efficient desulfurization hot air circulation system.

5. The equipment for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to claim 3, characterized in that: The pre-inoculation mixing liquid supply mechanism (22) comprises a tubular metering auger (221), a spray frame (222) and a transmission main bevel gear (223); the tubular metering auger (221) is evenly fixedly connected to the surface of the fermentation box (1); the liquid inlet pipe of the tubular metering auger (221) penetrates into the liquid storage chamber (111) and is connected to the inside of the liquid storage chamber (111); the liquid discharge pipe of the tubular metering auger (221) penetrates into the fermentation chamber (11) and is located in the first frame. On one side of the top of the frame (13), the spray frame (222) is evenly fixedly connected to the inner wall of the fermentation chamber (11) and is connected to one end of a drainage pipe of the tubular metering auger (221) that penetrates into the fermentation chamber (11). The transmission main bevel gear (223) is rotatably connected to the top of the tubular metering auger (221) and meshes with the second bevel gear (217). One end of the central axis of the transmission main bevel gear (223) is connected to one end of the auger shaft inside the tubular metering auger (221).

6. The equipment for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to claim 3, characterized in that: The material leveling mechanism (31) comprises a driving motor (310), a reciprocating screw rod (311), a guide rod (312), a translational L-shaped slide (313), a tooth seat (314), a second conical material frame (315), an adjusting gear (316), a first gear rod (317) and a second gear rod (318); the reciprocating screw rod (311) is rotatably connected to the inner wall of the fermentation chamber (11) and is located between the first frame (13) and the spray frame (222); the guide rod (312) is symmetrically fixedly connected to the inner wall of the fermentation chamber (11). The inner wall of the fermentation chamber (11) is located outside the reciprocating screw rod (311), the translation L-shaped slide (313) is threadedly connected to the outer surface of the reciprocating screw rod (311) and is sleeved on the outside of the guide rod (312), the tooth seat (314) is fixedly connected to the bottom of one end of the translation L-shaped slide (313) and is connected to the stirring frame mechanism (32), the second conical material frame (315) is fixedly connected to the bottom of the translation L-shaped slide (313) and is located at the same position as the first conical material box (218). Correspondingly, the feed port of the second conical material frame (315) and the discharge port of the first conical material box (218) are located at the same horizontal plane, the inner wall of the second conical material frame (315) is rotatably connected to a second discharge roller, the surface of the second conical material frame (315) is symmetrically rotatably connected to an adjustment gear (316), and is connected to the second discharge roller via a second one-way transmission, the first gear rod (317) is symmetrically fixedly connected to the inner wall of the fermentation chamber (11), and is located on one side of the bottom of the adjustment gear (316), and the adjustment gear (316) is symmetrically fixed to the inner wall of the fermentation chamber (11). The gear (316) is meshedly connected with the teeth on the surface of the first gear rod (317); the second gear rod (318) is symmetrically fixedly connected to the surface of the second conical material frame (315) and corresponds to the position of the discharge drive gear (219); one end of the second gear rod (318) passes through the inside of the feed crusher frame (211) and is meshedly connected with the discharge drive gear (219); the drive motor (310) is fixedly connected to the surface of the fermentation box (1) and is connected to one end of the reciprocating screw rod (311).

7. The equipment for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to claim 6, characterized in that: The stirring rack mechanism (32) comprises a first stirring rack (321), a second stirring rack (322) and a third stirring rack (323); the first stirring rack (321), the second stirring rack (322) and the third stirring rack (323) are respectively connected to the inner walls of the first frame (13), the second frame (14) and the third frame (15) in a uniformly rotatable manner; a driving groove (324) is provided on the surface of the first frame (13); first driving gears (325) are respectively provided at positions of the inner walls of the driving grooves (324) corresponding to the positions of the first stirring rack (321) and the material shifting rack (17); one end of the central axis of the first driving gear (325) is respectively connected to the first stirring rack (321) and the material shifting rack (17); the tooth seat (314) is located in the driving groove (324) and is meshedly connected to the first driving gear (325); the fermentation box ( 1) A second driving gear (326) is rotatably connected to a position corresponding to the first driving gear (325) on the surface of the fermentation box (1), and is connected to the first driving gear (325); a third driving gear (327) is rotatably connected to a position corresponding to the second stirring rack (322) and the material shifting rack (17) on the surface of the fermentation box (1), and a fourth driving gear (328) is fixedly connected to one end of the central axis of the third driving gear (327); the third driving gear (327) is connected to the second driving gear (326) via a first synchronous toothed belt (329); a fifth driving gear (330) is rotatably connected to a position corresponding to the third stirring rack (323) and the material shifting rack (17) on the surface of the fermentation box (1), and the fifth driving gear (330) is connected to the fourth driving gear (328) via a second synchronous toothed belt (331).

8. The equipment for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to claim 7, characterized in that: The stirring frame mechanism (32) further comprises an auxiliary stirring mechanism (300), wherein the auxiliary stirring mechanism (300) comprises a housing (301), a U-shaped groove (302), a horizontal cutting frame (303), an inclined cutting frame (304), a synchronous gear ring (305), an upper transmission shaft (306), a synchronous gear (307), a horizontal transmission frame (308), a transmission secondary bevel gear (309), a side main bevel gear (3010), an inclined main bevel gear (3011), a side auxiliary bevel gear (3012) and an inclined auxiliary bevel gear (3013), wherein the housing (301) is evenly fixedly connected to the inner walls of the first frame (13), the second frame (14) and the third frame (15), respectively, and the U-shaped groove (302) is provided in the housing (30 1) top, the first stirring frame (321), the second stirring frame (322) and the third stirring frame (323) are respectively rotatably connected to the inner wall of the U-shaped groove (302), one end of the first stirring frame (321), the second stirring frame (322) and the third stirring frame (323) respectively penetrate the outside of the shell (301) and are connected to one end of the first driving gear (325), the third driving gear (327) and the fifth driving gear (330), the horizontal cutting frame (303) and the inclined cutting frame (304) are respectively evenly rotatably connected to the top of the shell (301) along the material flow direction, and are located outside the first stirring frame (321), the second stirring frame (322) and the third stirring frame (323), the synchronous gear ring (3 05) are respectively fixedly connected to the first stirring frame (321), the second stirring frame (322) and the third stirring frame (323) at one end surface located inside the shell (301), the upper transmission shaft (306) is rotatably connected to the inner wall of the shell (301), the horizontal transmission frame (308) is evenly rotatably connected to the inner wall of the shell (301) and is located on one side of the bottom of the upper transmission shaft (306), a synchronous gear (307) is provided at a position corresponding to the position of the synchronous gear ring (305) on one end surface of the upper transmission shaft (306), and the synchronous gears (307) are meshed with each other, and transmission auxiliary bevel gears (309) are respectively provided at positions corresponding to the positions of the upper transmission shaft (306) and the surface of the horizontal transmission frame (308), and the transmission auxiliary bevel gears (309) are meshed with each other, and the side main bevel gears (3010) and the inclined main bevel gear (3011) are rotatably connected to the inner wall of the housing (301) respectively, and correspond to the positions of the horizontal cutting frame (303) and the inclined cutting frame (304); one end of the side main bevel gear (3010) is meshed with the side auxiliary bevel gear (3012) arranged on the surface of one end of the horizontal transmission frame (308); the other end of the side main bevel gear (3010) passes through the top of the housing (301) and is fixedly connected to the inner wall of the horizontal cutting frame (303); one end of the inclined main bevel gear (3011) is meshed with the inclined auxiliary bevel gear (3013) arranged on the surface of the other end of the horizontal transmission frame (308); the other end of the inclined main bevel gear (3011) passes through the top of the housing (301).and is fixedly connected to the inner wall of the inclined cutting frame (304).

9. The equipment for preparing biomass natural gas by dry high-temperature anaerobic fermentation according to claim 8, characterized in that: The horizontal cutting frame (303) has the same structure as the inclined cutting frame (304). The horizontal cutting frame (303) comprises a rotating drum (3031) and two groups of semicircular cutting plates (3032). The rotating drum (3031) is rotatably connected to the top of the housing (301) and is fixedly connected to one end of the side main bevel gear (3010) that passes through the top of the housing (301). The semicircular cutting plates (3032) are integrally formed in reverse order up and down and are arranged on the surface of the rotating drum (3031).

10. A process for preparing biomass natural gas by dry high-temperature anaerobic fermentation, applied to the equipment for preparing biomass natural gas by dry high-temperature anaerobic fermentation as claimed in claims 1-9, characterized in that: The following steps are involved: S1: Material pretreatment: The material is cut and crushed by a crushing mechanism (21), the crushing mechanism (21) is operated to synchronously drive the pre-inoculation mixing liquid supply mechanism (22) to operate, and the pre-inoculation mixing liquid supply mechanism (22) is operated to extract the biogas slurry in the liquid storage chamber (111) and evenly spray it in the first frame (13); S2: evenly spreading the material and stirring and mixing: the material in the material crushing mechanism (21) is quantitatively transported to the fermentation chamber (1) by the material mixing mechanism (31), and evenly spread on the first frame (13), and after spreading, it is stirred by the stirring frame mechanism (32), and the material in the frame is appropriately pushed out by the material pushing frame (17), so that the material in the frame can flow by itself under the action of gravity; S3: High temperature fermentation: The desulfurization hot gas circulation pipeline (200) is connected to the desulfurization hot gas utilization main pipeline, so that the hot gas is introduced into the third frame (15), the second frame (14), the first frame (13) and the first conical material box (218).

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