Biomass high-temperature aerobic composting integrated production device

Abstract

This invention discloses an integrated high-temperature aerobic composting production device for biomass, relating to the field of composting fertilizer processing technology. It includes: a feeding hopper; a composting mechanism; an aging mechanism comprising multiple independent aging chambers, each with an independent inlet, outlet, and aeration system; and a conveying system between the various mechanisms, comprising multiple shaftless auger conveyors for closed-loop material transport between the feeding hopper, composting mechanism, and aging mechanism. The multiple aging chambers of the aging mechanism are divided into two groups, connected by a bidirectional shaftless auger conveyor for cyclic feeding of material between the two groups. By integrating the feeding hopper, composting mechanism, and aging mechanism via shaftless auger conveyors, a compact, closed, continuous processing system is constructed.

Description

Technical Field

[0001] This invention relates to the field of composting fertilizer processing technology, and in particular to an integrated production device for high-temperature aerobic composting of biomass. Background Technology

[0002] Aerobic fermentation is the core process for treating biomass waste such as straw. However, traditional organic fertilizer production methods have significant shortcomings in terms of equipment and process integration. Firstly, the equipment functions are fragmented, with low levels of integration and automation. In existing technologies, units such as feeding, composting, aging, and discharging are often scattered as independent equipment or simply connected, forming a "small, scattered, and chaotic" pattern. This model not only occupies a large area but also leads to low material transfer efficiency and high labor costs due to poor system integration. Furthermore, the open transfer process easily causes heat loss and dust dispersion. Secondly, a more common and serious problem is that most of the decomposed materials are transported to open-air sites for static stockpiling and aging. This extensive ground stockpiling method occupies a large amount of land resources, and due to the lack of effective waste gas collection and treatment measures, it will continuously release malodorous gases such as ammonia and hydrogen sulfide, as well as greenhouse gases, into the environment, causing serious air pollution. At the same time, the improper disposal of leachate also poses a risk of soil and groundwater pollution. This makes it difficult for traditional production models to meet modern environmental protection requirements and restricts the green and sustainable development of the industry.

[0003] Furthermore, due to the scattered equipment, the energy generated during decomposition and aging cannot be effectively used to preheat the fermentation air or maintain the aging temperature, resulting in serious waste of system heat energy and high operating energy consumption. Secondly, in the material conveying process, traditional belt conveyors are prone to "material leakage and backflow" when conveying at an incline, and the open operation throughout the process leads to serious dust dispersion. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of serious pollution and waste of heat energy caused by the dispersed equipment and ground aging in traditional organic fertilizer production, and to propose an integrated high-temperature aerobic composting production device for biomass.

[0005] To achieve the above objectives, the present invention employs the following technology: an integrated high-temperature aerobic composting production device for biomass, comprising: Feed hopper; Mature organization; The aging mechanism includes multiple independent aging chambers, each with its own inlet, outlet and aeration system; And a conveying system set between the various mechanisms, including multiple shaftless auger conveyors, used to realize the closed conveying of materials between the feeding hopper, the composting mechanism and the aging mechanism; The aging mechanism has multiple aging chambers divided into two groups, which are connected by a shaftless auger conveyor that can transport materials in both directions, so as to realize the cyclic feeding of materials between the two groups of aging chambers. The composting mechanism includes a hollow stirring shaft, and the outer surface of the stirring shaft is provided with vent holes to achieve simultaneous stirring and aeration.

[0006] Preferably, the two sets of aging chambers are divided into columns A and B, each column contains three aging chambers, each aging chamber has a volume of tons, and the daily processing capacity of the maturation mechanism is 18 tons, which matches the capacity of a single aging chamber.

[0007] Preferably, the composting mechanism further includes a frame, in which a composting chamber and a driving component are fixedly installed, and the output end of the driving component is fixedly connected to a stirring shaft.

[0008] Preferably, the shaftless auger conveyor includes a guide pipe, a motor fixed to the end of the guide pipe, and a shaftless auger disposed inside the guide pipe and driven by the motor; Each aging chamber in the fermentation and aging mechanism is equipped with a control valve at its inlet and outlet. The control valve includes a fixed flange and a cover plate driven by a cylinder and slidably sealed to the fixed flange.

[0009] Preferably, it also includes a waste heat recovery tower, which is connected to the composting mechanism and / or aging mechanism through an air inlet pipe for recovering waste heat generated during fermentation; the waste gas emission pipe of the waste heat recovery tower is connected to the air inlet of the water washing spray tower.

[0010] Preferably, the waste heat recovery tower is equipped with a condensate recovery tank and heat exchange tubes distributed around it for recovering moisture and heat from the waste gas; the bottom of the condensate recovery tank is connected to the composting mechanism through a recovery section for replenishing the condensate containing bacteria into the composting mechanism.

[0011] Preferably, the recovery section includes a drain pipe, a first solenoid valve, a water storage tank, and a condensate recovery pipe; the waste heat recovery tower is also equipped with a second solenoid valve and a variable diameter branch pipe, the inner diameter of which decreases from the air inlet pipe toward the condensate recovery pipe, and is used to spray condensate into the composting mechanism using the Venturi effect.

[0012] Preferably, the waste heat recovery tower has an independent heat exchange chamber inside, which is sealed by a bottom plate and a bucket-shaped top plate, and a condensate recovery hopper is provided at the top; The tower body is fixed with heat exchange gas recovery pipe and air supply section on both sides, and the connection points of heat exchange gas recovery pipe and air supply section to the tower body are distributed vertically; the air supply section includes a pump and an air filter element, which is used to send pressurized and filtered external air into the lower part of the heat exchange chamber; the other end of the heat exchange gas recovery pipe is connected to the curing mechanism, which is used to send the air heated by the heat exchange chamber back. The heat exchange tube is composed of a hollow tube and an external heat exchange plate. Its bottom penetrates the bottom plate and its top penetrates the top plate and is higher than the upper surface of the top plate.

[0013] Preferably, a heat-conducting pipe is fixed through the middle of the condensate recovery tank, the bottom of the heat-conducting pipe passes through the bottom plate and is sealed, and the bottom of the heat-conducting pipe is flush with the bottom of the bottom plate. An exhaust branch pipe is fixed to the outer surface of the heat pipe. The exhaust branch pipe is sealed and connected to the condensate recovery tank. The heat pipe is connected to the heat exchange chamber through the exhaust branch pipe.

[0014] A method for producing organic fertilizer includes the following steps: After mixing the straw with the composting agent, it is sent to the composting mechanism for intermittent stirring and aeration composting. The decomposed material is fed into multiple aging chambers of the aging mechanism in a preset order via a shaftless auger conveyor. Once one set of aging bins is full, the conveying direction of the bidirectional shaftless auger conveyor is switched to transfer the material into another set of aging bins. The aging silos that have completed their aging cycle are discharged independently, and the empty aging silos are refilled with new materials, forming a continuous production cycle.

[0015] In summary, due to the adoption of the above-mentioned technology in the integrated high-temperature aerobic composting production device for biomass, the beneficial effects of this invention are: By integrating the feeding hopper, composting mechanism, and aging mechanism into a single design using a shaftless auger conveyor, a compact and closed continuous processing system is constructed. This changes the traditional "small, scattered, and disorderly" layout of high-temperature aerobic composting equipment, significantly reducing the equipment's footprint and achieving fully automated control from feeding to discharging. This effectively reduces the intensity of manual operation and the environmental risks during material transfer, laying the foundation for large-scale and standardized production. By setting the aging mechanism as multiple independent aging chambers and adopting a circulating feeding strategy with two columns, A and B, connected by bidirectional shaftless augers, an advanced production mode of "batch feeding, independent aging, and circulating discharge" is achieved. This allows the maturation mechanism to operate continuously without interruption, and the materials produced can flow in an orderly manner in the aging mechanism to complete the full cycle of aging. When one column of aging chambers is running at full capacity, it can be immediately switched to another column of aging chambers for feeding, making it easier to integrate and control. The waste heat recovery tower recovers and reuses the heat generated by the decomposition and aging mechanisms, and the recovered waste gas is discharged into the water washing spray tower for waste gas treatment, which is more environmentally friendly. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure according to the present invention is shown; Figure 2 A partial cross-sectional view of the structure according to the present invention is shown; Figure 3 A cross-sectional schematic diagram of the shaftless auger conveyor according to the present invention is shown; Figure 4 A partial structural schematic diagram of the composting mechanism according to the present invention is shown; Figure 5 A partial cross-sectional view of the waste heat recovery tower according to the present invention is shown; Figure 6 A schematic cross-sectional view of the waste heat recovery tower according to the present invention is shown. Figure 7 A schematic diagram of the overall structure of the control valve according to the present invention is shown.

[0017] Legend: 10. Feed hopper; 20. Fermentation mechanism; 21. Frame; 22. Fermentation chamber; 23. Drive unit; 24. Agitator shaft; 30. Aging mechanism; 40. Shaftless auger conveyor; 41. Feed guide pipe; 42. Motor; 43. Shaftless auger; 50. Waste heat recovery tower; 51. Tower body; 52. Inlet pipe; 521. Reducing branch pipe; 53. Exhaust gas discharge pipe; 54. Heat exchange gas recovery pipe; 55. Base plate; 56. Heat exchange tube; 57. Top plate; 58. Condensate recovery tank; 581. Heat transfer pipe; 582. Exhaust branch pipe; 583. Drain pipe; 584. Water storage tank; 585. First solenoid valve; 59. Second solenoid valve; 510. Condensate recovery pipe; 511. Condensate recovery hopper; 60. Water washing spray tower; 70. Control valve; 71. Fixed flange; 72. Cover plate; 73. Cylinder. Detailed Implementation

[0018] The following will describe, with reference to the accompanying drawings of the embodiments of the present invention, a biomass high-temperature aerobic composting integrated production device. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1, as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7As shown, the present invention provides: an integrated high-temperature aerobic composting production device for biomass, comprising a feeding hopper 10, a composting mechanism 20, an aging mechanism 30, and a shaftless auger conveyor 40; The feeding hopper 10, the composting mechanism 20, and the aging mechanism 30 are sequentially connected by a shaftless auger conveyor 40 to achieve material transfer. Specifically, the shaftless auger conveyor 40 includes a guide pipe 41, a motor 42, and a shaftless auger 43, which is composed of a spiral blade. Both ends are connected to the motor 42 or the guide pipe 41 via flange connecting shafts to avoid material entanglement. The motor 42 is fixed to the end of the guide pipe 41, and its output end is located inside the guide pipe 41 and fixedly connected to the shaftless auger 43, driving it to rotate to push the material. For example, the material is added into the feeding hopper 10 and sent to the composting mechanism 20 for composting by the shaftless auger conveyor 40. After composting, it is sent to the aging mechanism 30 for aging by the shaftless auger conveyor 40 at its bottom. It is worth mentioning that the specific number and position of the shaftless auger conveyors 40 are arranged on the feeding hopper 10, the composting mechanism 20, and the aging mechanism 30 by those skilled in the art according to the actual situation of material feeding and discharging, and are not specifically limited here.

[0020] The composting mechanism 20 includes a frame 21, in which a composting chamber 22 and a drive unit 23 are fixed. The drive unit 23 is preferably a servo motor or hydraulic motor with a reducer to output power. A stirring shaft 24 is fixed at its output end. The stirring shaft 24 is located inside the composting chamber 22, and its two ends are rotated and sealed to the chamber wall of the composting chamber 22 through bearings. Crucially, the interior of the stirring shaft 24 is a hollow structure, and its outer surface is evenly provided with several exhaust holes, so that hot air can diffuse from the exhaust holes on the surface of the stirring shaft 24 into the material, realizing the integration of stirring and aeration.

[0021] Furthermore, the aging mechanism 30 consists of six independent aging chambers, each equipped with an aeration system. The six aging chambers are divided into two columns, labeled as column A and column B. The first two aging chambers in column A and column B share a single shaftless auger conveyor 40 capable of bidirectional transport. Each column has three such conveyors. The design volume of each aging chamber is 18 tons, accommodating the total material output of the composting mechanism 20 for one day (3 batches), achieving a perfect connection between the production capacity of the preceding and following processes. The bottom of each column of aging chambers is connected by a shaftless auger conveyor 40, meaning that each column of aging chambers shares a single shaftless auger conveyor 40 for material discharge. Furthermore, to accurately control the feeding and discharging, each composting chamber 22 of the composting mechanism 20 and each aging chamber of the aging mechanism 30 is equipped with a feed inlet and a discharge outlet, and a control valve 70 is installed at these outlets. The control valve 70 includes a fixed flange 71, a cover plate 72, and a cylinder 73. The fixed flange 71 is fixedly connected to the chamber body, i.e., the composting chamber 22 or the aging chamber. The cover plate 72 and the fixed flange 71 are connected in a sliding seal through a slide rail. The cylinder 73 is fixed on the fixed flange 71, and its piston rod is fixed to the cover plate 72. The extension and retraction of the cylinder 73 drives the opening and closing of the cover plate 72, thereby realizing the opening and closing of the material channel. The purpose is to ensure the sealing of the composting chamber 22 or the aging chamber when there is no need for feeding or discharging.

[0022] Example 2, as Figures 1-7 As shown, the present invention provides an integrated high-temperature aerobic composting production device for biomass, which further includes an independent waste heat recovery tower 50 and a water washing spray tower 60. The waste heat recovery tower 50 includes a tower body 51, with a waste gas emission pipe 53 fixed at the top and an air inlet pipe 52 fixed at the bottom. The air inlet pipe 52 is connected to the exhaust ports of the composting mechanism 20 and the aging mechanism 30 through a pipeline network, so that the hot waste gas generated by the two mechanisms during operation can be collected and introduced into the tower body 51, and gradually drift from the bottom of the tower body 51 to the waste gas emission pipe 53 at the top of the tower body 51 for discharge. In this process, the heat of the hot waste gas itself is recovered. The waste gas emission pipe 53 is connected to the air inlet of the water washing spray tower 60. The low-temperature waste gas after waste heat recovery finally enters the water washing spray tower 60 for deep purification before being discharged. The purification method is such as water washing or chemical neutralization. The specific purification method is determined by those skilled in the art according to the actual situation and is not specifically limited here.

[0023] The tower body 51 forms a closed heat exchange space, inside which a condensate recovery tank 58 is fixed. Around the circumference of the condensate recovery tank 58, several vertical heat exchange tubes 56 are distributed and fixed. Each heat exchange tube 56 consists of a hollow conduit and metal heat exchange fins spirally wound around the outside of the conduit to increase the heat exchange area. A bottom plate 55 is sealed and fixed at the bottom of the heat exchange tubes 56, and its outer periphery is sealed to the inner wall of the tower body 51. At the top of the condensate recovery tank 58, a top plate 57 is provided. This top plate 57 is funnel-shaped and converges downwards towards the center, with an opening in its center for the top of the condensate recovery tank 58 to pass through. Its outer periphery is also sealed to the inner wall of the tower body 51. Thus, the bottom plate 55, the top plate 57, and the tower body 51 together constitute an independent heat exchange chamber surrounding the condensate recovery tank 58. Specifically, a condensate recovery hopper 511 is fixed at the top of the tower body 51. The recovery hopper is also shaped like a bucket and converges downwards towards the middle. The middle part is open. For example, after the hot exhaust gas enters the tower body 51, it flows to the condensate recovery hopper 511 through the duct. During this process, the heat is conducted to the spiral heat exchange plate and itself, so that the hot exhaust gas is cooled and condenses in contact with the condensate recovery hopper 511 or the top of the tower body 51. The condensate flows down along the bucket wall of the condensate recovery hopper 511 or the tower body 51 and converges in the middle and flows into the condensate recovery tank 58. It should be noted that the bottom of the duct penetrates the bottom plate 55 and is flush with the lower surface of the bottom plate 55, so as to facilitate the entry of exhaust gas from the bottom to the top into the duct. The top of the duct penetrates the top plate 57 and is higher than the upper surface of the top plate 57, in order to prevent condensate on the top plate 57 from flowing into the duct.

[0024] The purpose is to use the air inlet pipe to introduce the high-temperature waste gas generated by the composting mechanism 20 and the aging mechanism 30 into the heat exchange chamber inside. After the external air is pressurized and filtered by the air replenishment section, it enters the heat exchange chamber and exchanges heat with the waste gas through the heat exchange pipe 56. The heated fresh air is then transported back to the aeration system of the composting mechanism 20 and the aging mechanism 30 through the heat exchange gas recovery pipe 54, forming a closed energy circulation loop. This directly converts the waste heat into the heat energy required by the process, effectively maintaining the fermentation temperature and reducing the dependence on external heating sources. After the exhaust gas is cooled in the heat exchange chamber, the water vapor it carries is condensed on structures such as the condensate recovery hopper 511 and the top plate 57, and collected in the condensate recovery tank 58. The collected condensate is then sprayed back into the composting mechanism 20 by the recovery unit. This not only recovers the process water, but also sends the escaped bacteria and soluble nutrients contained in the condensate back to the main process, realizing the dual recycling of bacteria and water resources, and reducing the generation of high-concentration organic wastewater from the source.

[0025] Furthermore, heat exchange gas recovery pipes 54 and air replenishment sections are fixed on both sides of the tower body 51, and the connection points of the heat exchange gas recovery pipes 54 and air replenishment sections with the tower body 51 are distributed vertically. The other end of the heat exchange gas recovery pipe 54 is connected to the composting mechanism 20. The air replenishment section includes a pump and an air filter. The pump-pressurized air is filtered by the air filter and then sent into the heat exchange chamber for heat exchange. After heat exchange, it is sent into the composting mechanism 20 and the aging mechanism 30 through the heat exchange gas recovery pipe 54. External ambient air is sent into the heat exchange chamber through the air replenishment section. That is, the external ambient air is filtered by the air filter and pressurized by the pump before being sent from the tower body 51. Air enters the heat exchange chamber through the lower opening on one side. Air flows from bottom to top in the heat exchange chamber and indirectly exchanges heat with the high-temperature exhaust gas flowing through the heat exchange tube 56. The heated air (i.e., heat exchange gas) flows out from the upper opening on one side of the tower body 51 and is transported back to the composting mechanism 20 through the heat exchange gas recovery pipe 54. It is connected to the hollow stirring shaft 24. Finally, the hot air is evenly released into the material in the composting chamber 22 through the exhaust hole on the stirring shaft 24, providing the required temperature and oxygen for the aerobic fermentation of microorganisms and realizing the recycling of heat. It should be noted that the composting chamber 22 in this embodiment has a double-layer structure. The inner chamber is used for composting materials, and the outer chamber is equipped with thermocouples to maintain the temperature inside the chamber. By recovering waste heat, the usage time of the thermocouples is reduced, thus saving energy.

[0026] Furthermore, as the hot exhaust gas flows through the heat exchange tube 56, its heat is transferred to the upward-flowing cold air outside the tube through the tube wall, causing its own temperature to drop sharply. Water vapor in the exhaust gas condenses on the upper surface of the top plate 57, the lower surface of the condensate recovery hopper 511, or the inner wall of the top of the tower body 51. The hopper-shaped design of the top plate 57 allows the condensate to be smoothly collected into the condensate recovery tank 58 below. Crucially, because the condensate recovery tank 58 is surrounded by the heat exchange tube 56 filled with hot exhaust gas, the condensate inside the tank can be continuously heated and maintained within a temperature range suitable for microbial survival. This ensures that the temperature of the condensate inside the condensate recovery tank 58 is always within the suitable range for microbial activity, avoiding damage to the microorganisms caused by low-temperature storage.

[0027] The bottom of the condensate recovery tank 58 is connected to a recovery section, which includes a drain pipe 583, a first solenoid valve 585, a water storage tank 584, and a condensate recovery pipe 510. The upper end of the drain pipe 583 is connected to the bottom of the condensate recovery tank 58, and the lower end is connected to the first solenoid valve 585 and the water storage tank 584 in sequence. The condensate recovery pipe 510 is led out from the bottom of the water storage tank 584 and extends through the wall of the composting mechanism 20. By opening the first solenoid valve 585 at a fixed time or liquid level, the collected and active condensate can be temporarily stored in the water storage tank 584 for reuse.

[0028] To achieve stable and reliable condensate backflow, this embodiment installs a second solenoid valve 59 on the inlet pipe 52. When condensate needs to be replenished, the control system can temporarily close the second solenoid valve 59, cutting off the entry of hot exhaust gas into the tower body 51. At this time, the hot exhaust gas is still being generated due to decay or aging. Meanwhile, a variable diameter branch pipe 521 is fixed on the inlet pipe 52, above the second solenoid valve 59. The inner diameter of this variable diameter branch pipe 521 is designed so that the end connected to the inlet pipe 52 leads to the end connected to the condensate. One end of the water recovery pipe 510 narrows. When the pressure inside the air inlet pipe 52 increases, the airflow is forced to generate a significant Venturi effect (negative pressure) at the throat (narrowest part) of the variable diameter branch pipe 521. This negative pressure, together with the static pressure of the water storage tank 584, forms a combined force, drawing the condensate in the water storage tank 584 out through the condensate recovery pipe 510 and mixing it with the high-speed airflow in the variable diameter branch pipe 521 to form a gas-liquid two-phase flow. This flow is then powerfully replenished into the composting chamber 22, achieving quantitative and controllable replenishment of condensate.

[0029] It is worth mentioning that in some embodiments, the end of the variable diameter branch pipe 521 can also be connected to the heat exchange gas recovery pipe 54, and the second solenoid valve 59 is also installed on the heat exchange gas recovery pipe 54 to control the opening and closing of the heat exchange gas recovery pipe 54. Air is blown into the heat exchange chamber by the air supply section, which causes the pressure in the heat exchange chamber to rise. After being pressurized, the air enters the variable diameter branch pipe 521 to provide power for replenishing condensate.

[0030] Furthermore, to better provide heat to the condensate recovery tank 58, a heat-conducting pipe 581 is fixedly installed through the middle of the condensate recovery tank 58. The bottom of the heat-conducting pipe 581 passes through the bottom plate 55 and is sealed, and the bottom of the heat-conducting pipe 581 is flush with the bottom of the bottom plate 55. An exhaust branch pipe 582 is fixed to the outer surface of the heat-conducting pipe 581. The exhaust branch pipe 582 passes through the condensate recovery tank 58 and is sealed. The heat-conducting pipe 581 is connected to the heat exchange chamber through the exhaust branch pipe 582. The purpose is that some hot waste gas can flow into the exhaust branch pipe 582 through the heat-conducting pipe 581 and then be discharged into the heat exchange chamber through the exhaust branch pipe 582, so that both the inner and outer walls of the condensate recovery tank 58 can absorb heat, further improving the heat preservation effect.

[0031] Example 3, based on Example 1, specifically describes the method of producing organic fertilizer with integrated equipment. The method includes: mixing crushed straw with a high-efficiency composting agent, adding 100 grams of composting agent per ton of straw to ensure uniform distribution of the agent, providing the optimal microbial population foundation for subsequent rapid start-up and efficient fermentation. The mixed material is fed into the composting mechanism 20 through the feeding hopper 10. The intermittent aeration and stirring mode is adopted, that is, stirring and aeration are turned on simultaneously for 15 minutes every 1 hour of operation. Under this condition, the single composting and fermentation time is set to 4 hours. The equipment can run 3 batches continuously per day, and the total daily processing volume is 18 tons of mixture. After the composting is completed, the material enters the aging mechanism 30 for aging. First, the material is fed to column A. When column A is completely full, the shaftless auger conveyor 40 with bidirectional conveying is switched to transport the material to column B.

[0032] Specifically, the aging system operates as follows: On the first day, all three batches of material produced by the composting unit 20 were fed into the first aging chamber in column A via the shaftless auger conveyor 40, which is capable of bidirectional conveying. At this time, the feed inlets of the other five aging chambers were closed. The next day, switch control valve 70, and the second aging chamber in column A will start feeding. This cycle continues for 6 days, filling the aging chambers in columns A and B in sequence. The material undergoes further stabilization treatment in the aging chamber for 6 days. During this period, the aging unit operates at a frequency of 5 minutes of aeration per hour to provide trace amounts of oxygen for the subsequent fermentation of the material and remove excess moisture, thereby effectively improving the physicochemical properties and nutrient balance of the final organic fertilizer product.

[0033] The purpose is that when the material is put into the aging chamber at the end of column B on the sixth day, the material put into the first aging chamber of column A on the first day completes the 6-day aging cycle. At this time, the control valve 70 at the bottom of the first aging chamber of column A is opened, and the first aging chamber of column A can be emptied. On the seventh day, a new batch of aging material from the maturation mechanism 20 will be received again. This cycle logic ensures the continuous production of the equipment and avoids downtime.

[0034] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the present invention's technology and inventive concept, should be covered within the scope of protection of the present invention.

Claims

1. A biomass high-temperature aerobic composting integrated production device, characterized in that, include: Feed hopper (10); Maturation mechanism (20); The aging mechanism (30) includes multiple independent aging chambers, each of which has an independent inlet, outlet and aeration system; The conveying system is set between the various mechanisms, including multiple shaftless auger conveyors (40) for realizing the closed conveying of materials between the feeding hopper (10), the composting mechanism (20) and the aging mechanism (30); The aging mechanism (30) has multiple aging chambers divided into two groups, and the two groups of aging chambers are connected by a shaftless auger conveyor (40) that can transport materials in both directions, so as to realize the cyclic feeding of materials between the two groups of aging chambers; The composting mechanism (20) includes a composting chamber (22) and a hollow stirring shaft (24). The outer surface of the stirring shaft (24) is provided with exhaust holes to enable simultaneous stirring and aeration. It also includes a waste heat recovery tower (50) and a tower body (51), wherein the waste heat recovery tower (50) is connected to the composting mechanism (20) and / or aging mechanism (30) through an air inlet pipe (52) for recovering waste heat generated during fermentation; the waste gas discharge pipe (53) of the waste heat recovery tower (50) is connected to the air inlet of the water washing spray tower (60); The waste heat recovery tower (50) is equipped with a condensate recovery tank (58) and heat exchange tubes (56) distributed around it, for recovering moisture and heat in the waste gas; the bottom of the condensate recovery tank (58) is connected to the composting mechanism (20) through a recovery section, for replenishing the condensate containing bacteria into the composting mechanism (20). The recovery section includes a drain pipe (583), a first solenoid valve (585), a water storage tank (584), and a condensate recovery pipe (510); the waste heat recovery tower (50) is also equipped with a second solenoid valve (59) and a variable diameter branch pipe (521). The inner diameter of the variable diameter branch pipe (521) decreases from the air inlet pipe (52) towards the condensate recovery pipe (510), and is used to spray condensate into the composting mechanism (20) using the Venturi effect. The waste heat recovery tower (50) has an independent heat exchange chamber inside, which is sealed by a bottom plate (55) and a bucket-shaped top plate (57), and a condensate recovery hopper (511) is provided on the top. The tower body (51) is fixed with heat exchange gas recovery pipe (54) and air replenishment part on both sides respectively, and the connection points of heat exchange gas recovery pipe (54) and air replenishment part to tower body (51) are distributed vertically; the air replenishment part includes a pump and an air filter element, which is used to send pressurized and filtered external air into the lower part of the heat exchange chamber; the other end of the heat exchange gas recovery pipe (54) is connected to the curing mechanism (20), which is used to send the air heated by the heat exchange chamber back; A heat-conducting pipe (581) is fixed through the middle of the condensate recovery tank (58), and the bottom of the heat-conducting pipe (581) is sealed through the bottom plate (55), and the bottom of the heat-conducting pipe (581) is flush with the bottom of the bottom plate (55). An exhaust branch pipe (582) is fixed on the outer surface of the heat pipe (581). The exhaust branch pipe (582) is sealed to the condensate recovery tank (58). The heat pipe (581) is connected to the heat exchange chamber through the exhaust branch pipe (582).

2. The integrated high-temperature aerobic composting production device for biomass according to claim 1, characterized in that, The two aging chambers are divided into columns A and B, each containing three aging chambers. Each aging chamber has a volume of 18 tons, and the daily processing capacity of the maturation mechanism (20) is 18 tons, which matches the capacity of a single aging chamber.

3. The integrated high-temperature aerobic composting production device for biomass according to claim 1, characterized in that, The composting mechanism (20) also includes a frame (21), in which a composting chamber (22) and a drive unit (23) are fixedly installed. The output end of the drive unit (23) is fixedly connected to the stirring shaft (24).

4. The integrated high-temperature aerobic composting production device for biomass according to claim 1, characterized in that, The shaftless auger conveyor (40) includes a guide pipe (41), a motor (42) fixed to the end of the guide pipe (41), and a shaftless auger (43) installed inside the guide pipe (41) and driven by the motor (42). The inlet and outlet of each aging chamber in the fermentation chamber (22) and aging mechanism (30) are equipped with control valves (70). The control valves (70) include a fixed flange (71) and a cover plate (72) driven by a cylinder (73) and slidably sealed to the fixed flange (71).

5. The integrated high-temperature aerobic composting production device for biomass according to claim 1, characterized in that, The heat exchange tube (56) is composed of a hollow tube and an external heat exchange plate. Its bottom penetrates the bottom plate (55), and its top penetrates the top plate (57) and is higher than the upper surface of the top plate (57).

6. A method for producing organic fertilizer, using the integrated high-temperature aerobic composting and maturation biomass production device as described in any one of claims 1-5, characterized in that, Includes the following steps: After mixing the straw with the composting agent, it is sent to the composting device (20) for intermittent stirring and aeration composting; The decomposed material is fed into multiple aging chambers of the aging mechanism (30) in a preset order via a shaftless auger conveyor (40) for aging. When one set of aging bins is full, the conveying direction of the bidirectional shaftless auger conveyor (40) is switched to put the material into another set of aging bins. The aging silos that have completed their aging cycle are discharged independently, and the empty aging silos are refilled with new materials, forming a continuous production cycle.

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