Biological pre-depolymerization system of lignocellulosic waste

Abstract

The utility model belongs to the field of biological fermentation technology, concretely relates to a kind of lignocellulose class waste biological pre-depolymerization system, comprising: pretreatment bin, is provided with stirring mechanism in it;Spray mechanism is set in the pretreatment bin;Square bin is selectively communicated with the discharge opening of the pretreatment bin by quick connector;Recycling mechanism, including screening conveying mechanism, liquid collector and hydraulic pump, screening conveying mechanism is set in the bottom of the pretreatment bin, liquid collector is located below the screening conveying mechanism, and hydraulic pump is used to communicate the liquid collector with the spray mechanism;And, temperature control mechanism, including setting in the heat preservation layer of the square bin and the heating device that the square bin is heated.

Description

Technical Field

[0001] This utility model belongs to the field of bio-fermentation technology, specifically relating to a bio-pre-depolymerization system for lignocellulosic waste. Background Technology

[0002] The efficient resource utilization of organic waste (such as crop straw) is of great significance for environmental protection and sustainable development. Achieving its harmlessness, stabilization, and resource recovery through aerobic fermentation is one of the mainstream treatment pathways, and efficient pretreatment is a crucial step in ensuring the effectiveness of subsequent fermentation. However, existing organic waste pre-depolymerization systems still face numerous technical bottlenecks in achieving effective pretreatment—especially in creating ideal conditions for subsequent deep hydrolysis and acidification—severely restricting their treatment efficiency, economic viability, and large-scale application.

[0003] Firstly, in terms of material mixing and conditioning, existing technologies struggle to achieve uniform mixing of liquids and loose solid waste (such as straw). Commonly used single-stage spraying and fixed-angle nozzles fail to create a uniform humidity field within the material, leading to localized over-wetting or under-wetting, and making it impossible to stably control the material's moisture content within the activity range (e.g., 85%-90%) required for subsequent hydrolysis and acidification by microorganisms. Simultaneously, mixing devices are often not optimized for the physical characteristics of straw-like materials, easily creating mixing dead zones or excessively damaging the material structure. This not only affects uniformity but also hinders the formation of a suitable pore structure to promote fermentation.

[0004] Secondly, existing systems are severely inadequate in controlling temperature during the creation and maintenance of the fermentation environment. Pretreated materials require a stable temperature during fermentation to activate and maintain the activity of hydrolytic and acidifying bacteria. However, existing fermentation chambers generally lack effective insulation design and energy-efficient active heating methods, resulting in rapid heat loss and large temperature fluctuations. This not only prolongs the hydrolysis and acidification cycle, leading to low processing efficiency, but also significantly increases operating costs due to reliance on energy-intensive heating methods.

[0005] Furthermore, existing technologies have significant shortcomings in resource utilization and process control. The free liquid generated during the pretreatment stage often contains leaching components and microorganisms that promote hydrolysis and acidification, but most existing systems lack effective collection and recycling mechanisms for such liquids, resulting in resource waste and increased load on subsequent water treatment. Simultaneously, the entire pretreatment and fermentation process lacks closed-loop control based on key parameters (such as humidity and temperature), making it impossible to dynamically adjust the process according to the material state, leading to unstable treatment results.

[0006] Furthermore, existing pre-depolymerization systems suffer from poor overall architectural flexibility, often employing a fixed-capacity single-compartment design that cannot flexibly adapt to fluctuations in processing scale, creating capacity bottlenecks when continuous processing or large-scale applications are required. The integration between functional units within the system is poor, resulting in low space utilization. Moreover, key components exhibit deficiencies in corrosion resistance, residue prevention, and maintainability, impacting the long-term reliability and economic efficiency of the equipment.

[0007] Therefore, in view of the problems of uneven mixing, unstable temperature, high energy consumption and poor applicability of the existing pre-depolymerization system, it is necessary to optimize and improve the organic waste pretreatment scheme so as to create stable, controllable and efficient pretreatment conditions for subsequent efficient hydrolysis and acidification, and ultimately improve the fermentation efficiency and fermentation quality of the fermentation equipment. Utility Model Content

[0008] The purpose of this invention is to provide a biological prepolymerization system for lignocellulosic waste, in order to solve the problems of uneven mixing, unstable temperature, high energy consumption and poor applicability of existing prepolymerization systems.

[0009] To achieve the above objectives, this utility model provides a biological pre-depolymerization system for lignocellulosic waste, comprising: The pretreatment chamber is equipped with a stirring mechanism. A spraying mechanism is installed inside the pretreatment chamber; The square silo can be selectively connected to the discharge port of the pretreatment silo via a quick connector; The recycling mechanism includes a screening and conveying mechanism, a liquid collector, and a hydraulic pump. The screening and conveying mechanism is located at the bottom of the pretreatment chamber, the liquid collector is located below the screening and conveying mechanism, and the hydraulic pump is used to connect the liquid collector to the spraying mechanism; and... The temperature control mechanism includes an insulation layer disposed in the container and a heating device for heating the container.

[0010] Alternatively, the screening and conveying mechanism is inclined at the bottom of the pretreatment chamber, with an angle of 5°-15° to the horizontal plane.

[0011] Alternatively, the screening and conveying mechanism is a metal chain conveyor, wherein gaps are formed between the links of the metal chain to allow liquid to flow into the liquid collector.

[0012] Optionally, a traveling vehicle is provided at the bottom of the container.

[0013] Alternatively, the traveling vehicle may be mounted on a track.

[0014] Alternatively, the container may further include a molecular membrane covering its top opening and a molecular membrane receiving / receiving device for receiving / receiving the molecular membrane.

[0015] Alternatively, the top of the container may also be covered with a rigid outer shell, one end of which is rotatably connected to the container body, and the other end is connected to the container body via a lifting mechanism.

[0016] Optionally, the spraying mechanism includes an upper spray pipe and a lower spray pipe spaced apart along the height direction of the pretreatment chamber; the nozzles of the upper spray pipe are inclined downwards, and the nozzles of the lower spray pipe are inclined upwards.

[0017] Alternatively, the temperature control mechanism may further include a solar collector installed on the top of the container, which is connected to the heating device via a fluid pipeline.

[0018] Alternatively, the system may also include a foldable conveyor that connects to the discharge port of the silo via an articulated mechanism.

[0019] The above technical solution achieves material homogenization through the synergy of the stirring and spraying mechanisms, providing an ideal physical basis for hydrolysis and acidification. A stable temperature environment is provided for fermentation through a temperature control mechanism, ensuring the high speed and full progress of the biochemical reaction. This shortens the pretreatment cycle and improves the consistency of product quality. A recycling mechanism consisting of a screening and conveying mechanism, a liquid collector, and a hydraulic pump enables internal recycling of the liquid. This significantly reduces the external consumption of fresh water and reagents (if added), lowering operating costs and reducing the generation and discharge of high-concentration organic waste liquid at the source, thus being environmentally friendly. The modular container can be switched with the pretreatment container via quick-connect couplings, allowing the pretreatment and fermentation processes to be decoupled and run in parallel. While one container is fermenting, the pretreatment container can continue to feed other containers, thus overcoming the capacity bottleneck of fixed equipment and enabling the system to flexibly adapt to fluctuating processing demands, maximizing overall equipment utilization and processing capacity. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional structural schematic diagram of the biological pre-depolymerization system for lignocellulosic waste provided by this utility model; Figure 2This is a top view schematic diagram of the biological prepolymerization system for lignocellulosic waste provided by this utility model.

[0022] In the above attached figures: 1-Pretreatment chamber, 2-Stirring mechanism, 3-Spraying mechanism, 4-Square silo, 51-Screening and conveying mechanism, 52-Liquid collector, 6-Traveling vehicle, 7-Railway, 81-Humidity detector, 82-Temperature detector, 83-Pressure detector, 9-Rigid outer shell. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that while the description of these embodiments is intended to aid in understanding the present invention, it does not constitute a limitation thereof. The specific structural and functional details disclosed herein are only for describing exemplary embodiments of the present invention. However, the present invention may be embodied in many alternative forms and should not be construed as being limited to the embodiments described herein.

[0024] According to a first aspect of this disclosure, a bio-pre-depolymerization system for lignocellulosic waste is provided for a pre-treatment step in fermentation equipment. Wherein, Figure 1 and Figure 2 This paper presents a specific implementation case of the bio-prepolymerization system for lignocellulosic waste.

[0025] See Figure 1 and Figure 2 As shown, the lignocellulosic waste bio-prepolymerization system includes: a pretreatment chamber 1, which is equipped with a stirring mechanism 2; a spraying mechanism 3, which is installed inside the pretreatment chamber 1; a square silo 4, which can be selectively connected to the discharge port of the pretreatment chamber 1 via a quick connector; a recycling mechanism, including a screening and conveying mechanism 51, a liquid collector 52, and a hydraulic pump, wherein the screening and conveying mechanism 51 is located at the bottom of the pretreatment chamber 1, the liquid collector 52 is located below the screening and conveying mechanism 51, and the hydraulic pump is used to connect the liquid collector 52 to the spraying mechanism 3; and a temperature control mechanism, including an insulation layer installed in the square silo 4 and a heating device for heating the square silo 4.

[0026] The working process of the bio-prepolymerization system for lignocellulosic waste is as follows: 1. Homogenization Stage: Organic waste such as straw enters the pretreatment chamber 1, where the mixing mechanism 2 mechanically mixes it to improve the homogeneity of the material. Simultaneously, the spraying mechanism 3 sprays conditioning liquid / bacterial solution onto the material. The core function of this stage is to achieve thorough and uniform mixing of the material and liquid, ensuring that the straw fibers receive the necessary, evenly distributed moisture and pre-degrading bacteria for hydrolysis, creating consistent initial physical conditions for subsequent microbial activity.

[0027] 2. Humidity Control and Liquid Circulation Stage: The conditioned material falls to the screening and conveying mechanism 51 at the bottom of the pretreatment chamber 1. This mechanism separates excess free liquid while conveying the solid material. The separated liquid is captured by the liquid collector 52 and then pumped back to the spraying mechanism 3 by a hydraulic pump, forming a liquid recovery and circulation system. Its core function is to precisely control and stabilize the final moisture content of the material. By removing and recycling excess liquid, the anaerobic environment caused by excessive material moisture is effectively avoided, ensuring that the humidity is maintained within the range most suitable for the activity of hydrolytic and acidifying bacteria, greatly optimizing the biochemical reaction environment.

[0028] 3. Constant Temperature Fermentation Stage: After conditioning and moisture control, the material is transported to silo 4 via a quick-connect coupling. Subsequently, the temperature control mechanism activates: the insulation layer minimizes heat loss, while the heating device provides an active heat source, ensuring that the temperature inside silo 4 rises rapidly and is maintained stably at a suitable level. This stable, warm environment offers dual benefits: it accelerates the hydrolysis rate of straw components and creates optimal conditions for the rapid proliferation and metabolism of thermophilic acidifying microorganisms, thereby efficiently converting hydrolysis products into target organic acids.

[0029] Through the above technical solutions, the synergy between the stirring mechanism 2 and the spraying mechanism 3 achieves material homogenization, providing an ideal physical basis for hydrolysis and acidification. The temperature control mechanism provides a stable temperature environment for fermentation, ensuring the high speed and full progress of the biochemical reaction. This shortens the pretreatment cycle and improves the consistency of product quality. The recycling mechanism, consisting of the screening and conveying mechanism 51, the liquid collector 52, and the hydraulic pump, enables internal recycling of the liquid. This significantly reduces the external consumption of fresh water and reagents (if added), lowers operating costs, and reduces the generation and discharge of high-concentration organic waste liquid at the source, thus being environmentally friendly. The modular container 4 can be switched with the pretreatment container 1 via quick connectors, allowing the pretreatment and fermentation processes to be decoupled and carried out in parallel. While one container 4 is fermenting, the pretreatment container 1 can continue to feed other containers 4, thus breaking through the capacity bottleneck of fixed equipment and enabling the system to flexibly adapt to fluctuating processing demands, maximizing overall equipment utilization and processing capacity.

[0030] It should be noted that directional terms such as "inner" and "outer" refer to "inner" and "outer" relative to the outline of the component. "Inner" refers to the direction towards the inside of the component, and "outer" refers to the direction away from it. Furthermore, terms such as "first" and "second" are used to distinguish one element from another and do not indicate sequence or importance. Moreover, in the following descriptions with accompanying drawings, the same reference numerals in different drawings represent the same element. The phrase "and / or" in the text refers to A and / or B, indicating that there are three possible scenarios: only A, only B, and both A and B. The phrase " / and" in the text refers to A and B, indicating that there are two possible scenarios: only A and both A and B.

[0031] In one embodiment of this disclosure, the screening and conveying mechanism 51 is inclined at the bottom of the pretreatment chamber 1, with an angle of 5°-15° to the horizontal plane. This inclination angle allows for reasonable control of the material's movement speed during transport by the screening and conveying mechanism 51, while also preventing the material layer from sliding out too quickly due to a steep slope. This extends the effective residence time of the material on the screening surface, creating more favorable conditions for free liquid to fully infiltrate and separate through the gaps in the screening mechanism, thereby improving the efficiency and thoroughness of solid-liquid separation. The free liquid separated from the material automatically flows to the lower side under gravity, and the inclined screen surface provides a directional flow path for this liquid, effectively guiding it to quickly detach from the main material and flow into the liquid collector 52 below. This avoids the possibility of liquid accumulating, stagnating, or being re-entrained by the material on the horizontal screen surface, structurally ensuring the reliable operation of the recycling mechanism.

[0032] In this disclosure, the screening and conveying mechanism 51 is a metal chain conveyor, with gaps formed between the links of the metal chain to allow liquid to flow into the liquid collector 52. The metal chain possesses excellent mechanical strength and wear resistance, capable of withstanding hard impurities that may be mixed in the pre-treated organic waste and continuous conveying loads. Its durability is far superior to traditional screens or porous plates, effectively preventing premature failure due to corrosion or wear and ensuring the long-term stability of the system. Simultaneously, the gaps formed between the chain links are essentially a non-fixed, dynamic filtration channel. During conveying, the continuous relative movement between the material and the chain effectively prevents fibrous material adhesion or solid particles from clogging the filter pores, providing a certain degree of self-cleaning capability and maintaining the long-term unobstructed flow of the liquid separation channel.

[0033] Solid materials are reliably carried by the chain links and transported to the discharge port, while free liquid rapidly leaks through the gaps to the liquid collector 52. This continuous and uninterrupted process not only greatly improves separation efficiency but also reduces the risk of solid materials being repeatedly soaked in liquid, providing materials with more stable moisture content for subsequent fermentation stages. The entire recycling mechanism thus operates efficiently and reliably, structurally ensuring resource recycling and a pollution-free process.

[0034] It should be noted that the metal chain conveyor is an existing technology transmission device. Those skilled in the art can select a metal chain conveyor of appropriate specifications based on actual needs.

[0035] In one embodiment, a traveling vehicle 6 is installed at the bottom of the container 4. The traveling vehicle 6 gives the container 4 independent mobility, transforming it from a fixed storage container into a flexible logistics unit, enabling the container 4 to be efficiently and accurately transferred between the discharge port of the pretreatment chamber 1 and the subsequent fermentation station. After a container 4 is loaded at the pretreatment station, it can be immediately transported away by the traveling vehicle 6, and the next empty container 4 can be moved to the docking station. This achieves continuous pretreatment, completely eliminating the equipment waiting time caused by the serial operation in the loading, fermentation, and discharge stages of traditional fixed fermentation chambers, and improving the utilization rate of the main pretreatment equipment and the overall processing efficiency of the system.

[0036] The 4-cell container can be flexibly arranged in the optimal fermentation location according to site conditions and process requirements, and can even achieve dense storage. From a system operation perspective, this design supports modular expansion. The total processing capacity of the system can be easily increased simply by increasing the number of 4-cell containers without modifying the main pre-processing equipment. This makes investment and capacity planning more flexible and enhances the adaptability of the pre-depolymerization system to different application scenarios and processing scales.

[0037] Furthermore, the traveling cart 6 is mounted on the track 7, enabling it to automatically and precisely travel along a predetermined path each time it switches workstations, ultimately stopping stably at a designated position perfectly aligned with the discharge port of the pretreatment bin 1. This ensures that the quick connectors can connect quickly and reliably, shortening auxiliary time and improving the smoothness and automation level of process transitions. Simultaneously, it standardizes the flow of bin 4 between the pretreatment and fermentation areas, avoiding chaos and collision risks, and also facilitates the queuing, scheduling, and centralized management of multiple bins 4.

[0038] In one embodiment provided in this disclosure, the container 4 further includes a molecular membrane covering its top opening and a molecular membrane receiving / delivering device for receiving and delivering the molecular membrane. The unique microporous structure of the molecular membrane allows gases such as carbon dioxide generated during fermentation to escape freely, while supporting the appropriate infiltration of external oxygen. This provides the necessary gas exchange conditions for the aerobic fermentation activities of the materials inside the container, effectively preventing the formation of an anaerobic environment. At the same time, the membrane material has excellent waterproof properties, reliably blocking the intrusion of external rainwater and other environmental moisture, preventing the materials from becoming damp and moldy. It also works synergistically with the insulation layer to reduce the loss of heat generated during fermentation, jointly maintaining the stability of the temperature inside the container.

[0039] Furthermore, combined with the molecular membrane deployment and retraction device, operators can proactively and flexibly control the covering and uncovering of the membrane according to different stages of the fermentation process and external weather conditions. For example, the entire membrane can be unfolded during the fermentation start-up period to maintain heat and moisture; during the peak high-temperature period, it can be partially rolled up to enhance heat dissipation. This dynamically adjustable coverage management achieves precise and intelligent control of the fermentation microenvironment, which not only optimizes the fermentation process but also ensures processing quality and efficiency, and improves the system's adaptability and operational reliability to different climatic conditions.

[0040] Furthermore, the top of the container 4 is also covered with a rigid outer shell 9, one end of which is rotatably connected to the container body, and the other end is connected to the container body through a lifting mechanism.

[0041] The rigid outer shell 9 acts as a robust physical barrier, working in conjunction with the underlying molecular membrane to provide dual protection. This effectively resists unexpected impacts from falling objects and extreme weather, protecting the fragile molecular membrane from mechanical damage and thus enhancing the long-term reliability and durability of the fermentation system in complex industrial environments. Simultaneously, this openable top cover structure facilitates direct inspection and maintenance of the interior of the container 4 and the molecular membrane handling device.

[0042] The lifting mechanism allows for flexible and stable adjustment of the opening angle of the rigid outer shell 9 as needed. When rapid cooling or enhanced ventilation is required, the shell can be raised to create a heat dissipation channel; when auxiliary microbial agents need to be added or maintenance is required, ample access points are provided. This active opening and closing control, combined with the microporous permeability of the molecular membrane, achieves more precise and powerful comprehensive control over the fermentation environment within the chamber, enhancing the overall system's process adaptability and operational flexibility.

[0043] In one embodiment, the spraying mechanism 3 includes an upper spray pipe and a lower spray pipe spaced apart along the height direction of the pretreatment chamber 1; the nozzles of the upper spray pipe are inclined downwards, and the nozzles of the lower spray pipe are inclined upwards.

[0044] Specifically, the nozzles of the upper spray pipe are angled downwards, allowing the liquid to effectively cover and penetrate the upper and middle layers of the material, providing initial wetting to newly added, relatively dry materials. The angle also prevents excessive concentration of liquid in the center of the silo or direct splashing onto the silo walls. Simultaneously, the nozzles of the lower spray pipe are angled upwards, providing targeted humidification and agitation to areas prone to sedimentation at the bottom of the silo, effectively eliminating dead zones. Furthermore, the upward-spraying liquid meets the material curtain being lifted and falling by the agitator, increasing the liquid-solid contact area and mixing intensity. This effectively prevents the sprayed liquid from being rapidly transported away by the bottom conveyor mechanism without being mixed.

[0045] The upper and lower spray pipes, through their specific spray directions, form a three-dimensional, intersecting liquid distribution field within the chamber. This layout ensures that the space from the top to the bottom of the chamber is effectively covered, achieving uniform humidification of the material from all directions without dead angles. This fundamentally solves the problem of localized over-wetting or over-drying caused by uneven mixing, laying a solid foundation for the rapid start-up and stable operation of the subsequent aerobic fermentation process.

[0046] In one embodiment, the temperature control mechanism also includes a solar collector disposed on the top of the container 4, which is connected to the heating device via a fluid pipeline.

[0047] The solar collector directly converts solar radiation into heat energy and delivers it to the heating device in container 4 via a fluid medium, thus providing a continuous and cost-free heat supply for the aerobic fermentation process of the materials. This reduces reliance on external energy sources such as traditional electricity or fossil fuels, and decreases the system's long-term energy consumption and carbon emissions. Furthermore, the introduction of solar energy provides a stable basic heat source for fermentation startup and maintenance. Especially under conditions of sufficient sunlight, it alleviates the workload of the main heating device, helping to maintain a more stable temperature within the container and extending the service life of the main heating equipment.

[0048] The solar-assisted heating structure works in conjunction with the insulation layer of the container 4 to create a high-efficiency, low-cost temperature control system. This allows the entire system to ensure that the material quickly reaches and is maintained within the optimal fermentation temperature range at a low operating cost, thereby effectively guaranteeing the stability of fermentation efficiency and processing results. From the perspective of energy utilization, this enhances the technological advancement and economy of the entire pre-depolymerization system.

[0049] In one embodiment, the system also includes a foldable conveyor that connects to the discharge port of the container 4 via an articulated mechanism.

[0050] In operation, the foldable conveyor unfolds and connects to the next processing stage, forming a continuous and efficient discharge channel. When not in operation or during equipment relocation, it can be folded up, reducing its own space occupation. In this way, the entire pre-depolymerization system can adapt to a more compact site layout, and it is also convenient to schedule and share among multiple fermentation silos, improving the equipment's versatility and site utilization.

[0051] Furthermore, compared to fixed conveying equipment, this foldable design provides adaptability to the height of the discharge station. Its extension length and discharge angle can be flexibly adjusted via a hinge mechanism, allowing for rapid matching of the optimal discharge path based on the specific location of different silos 4 and the height of the downstream receiving equipment. This not only eliminates the hassle of repeatedly moving heavy conveying equipment, significantly reducing the labor intensity of operators, but also shortens the material turnaround time after fermentation, thereby effectively improving the operational continuity and overall processing efficiency of the entire pre-depolymerization system from fermentation to discharge.

[0052] It should be noted that the conveyor is configured as a conveying device in the existing technology.

[0053] In this disclosure, the conveyor is rotatably connected to the container 4 via an articulated structure, thereby enabling folding and unfolding, which has good flexibility and practicality.

[0054] In this disclosure, the stirring mechanism 2 is a horizontal spiral agitator, with multiple through holes of 5-8 mm in diameter on its spiral blades. When the spiral blades push the material, fibrous waste such as straw is forced through these 5-8 mm diameter holes, where it is combed and broken up, thereby dispersing the original clump structure and promoting uniform dispersion of the material. The through holes provide additional channels for the sprayed liquid to penetrate the material layer, allowing the liquid to permeate from the front to the rear of the blades, achieving multi-dimensional and three-dimensional distribution within the material pile. This is beneficial for improving the uniformity of liquid-solid mixing and stabilizing the moisture content of the material within a suitable fermentation range.

[0055] In this disclosure, the lignocellulosic waste bio-prepolymerization system also includes a controller, which is communicatively connected to a humidity detector 81, a temperature detector 82, a pressure detector 83, a hydraulic pump, and a heating device. The humidity detector 81 is located inside the pretreatment chamber 1 to detect the current humidity information of the pretreatment chamber 1. The temperature detector 82 is located in the square chamber 4 to detect the current temperature information inside the square chamber 4. The pressure detector 83 is located below the pretreatment chamber 1 to measure the current weight information of the pretreatment chamber 1. The controller controls the stirring mechanism 2, the spraying mechanism 3, the hydraulic pump, and the heating device to perform corresponding actions based on the current weight information, current humidity information, and current temperature information.

[0056] When organic waste is fed into the pretreatment chamber 1, the pressure detector 83 located at the bottom of the chamber measures the current weight information in real time and transmits it to the controller. Based on this, the controller automatically determines the feeding status and processing load, and intelligently starts the stirring mechanism 2 and the spraying mechanism 3. At the same time, it can initially set the matching operating parameters based on the weight information, realizing on-demand energy supply and precise input.

[0057] During the mixing process, a humidity detector 81 installed in the pretreatment chamber 1 continuously monitors the current humidity information of the material. The controller compares this data with the preset optimal moisture content range in real time and dynamically adjusts the spray volume of the spraying mechanism 3. If the humidity is lower than the set value, the spraying is increased; if it is too high, the spraying is reduced or stopped. Simultaneously, the hydraulic pump can be controlled to accelerate the recovery of free liquid at the bottom, thereby ensuring that the material humidity is stable within the optimal range, laying the foundation for subsequent hydrolysis and acidification.

[0058] During the fermentation stage, a temperature detector 82 installed inside the container 4 feeds back the current temperature information to the controller. The controller compares this temperature with the fermentation process requirements to precisely control the start and stop of the heating device, ensuring that the container 4 quickly reaches and maintains the most efficient fermentation temperature range, thus avoiding energy waste.

[0059] By monitoring weight, humidity, and temperature in real time, the controller precisely controls the spray volume based on real-time humidity data, avoiding waste of liquid and reagents; it matches equipment operating intensity to the weight of the storage chamber, achieving on-demand energy supply; and it precisely controls temperature based on fermentation temperature, preventing excess heat. Thus, management and control based on real-time data, combined with liquid recycling, maximizes the utilization of various materials and resources. This allows the pre-depolymerization system to dynamically respond to changes in material state (such as uneven initial humidity) and environmental conditions (such as fluctuations in ambient temperature), automatically adjusting and compensating. Furthermore, by modifying the controller's settings, it can flexibly adapt to handle different types or processes of organic waste.

[0060] In this disclosure, the heating device and the solar collector are both prior art, and those skilled in the art can obtain them by making conventional improvements to commercially available products based on the technical concept of this disclosure.

[0061] Finally, it should be noted that this utility model is not limited to the above-described optional embodiments, and anyone can derive other various forms of products under the guidance of this utility model. The above specific embodiments should not be construed as limiting the scope of protection of this utility model, which should be determined by the claims, and the description can be used to interpret the claims.

Claims

1. A biological pre-depolymerization system for lignocellulosic waste, characterized in that, include: The pretreatment chamber is equipped with a stirring mechanism. A spraying mechanism is installed inside the pretreatment chamber; The square silo can be selectively connected to the discharge port of the pretreatment silo via a quick connector; The recycling mechanism includes a screening and conveying mechanism, a liquid collector, and a hydraulic pump. The screening and conveying mechanism is located at the bottom of the pretreatment chamber, the liquid collector is located below the screening and conveying mechanism, and the hydraulic pump is used to connect the liquid collector to the spraying mechanism. The temperature control mechanism includes an insulation layer disposed in the container and a heating device for heating the container.

2. The biological pre-depolymerization system for lignocellulosic waste according to claim 1, characterized in that, The screening and conveying mechanism is inclined at the bottom of the pretreatment chamber, with an angle of 5°-15° with the horizontal plane.

3. The biological pre-depolymerization system for lignocellulosic waste according to claim 1, characterized in that, The screening and conveying mechanism is a metal chain conveyor, in which gaps are formed between the links of the metal chain to allow liquid to flow into the liquid collector.

4. The biological pre-depolymerization system for lignocellulosic waste according to claim 1, characterized in that, A mobile vehicle is installed at the bottom of the container.

5. The lignocellulosic waste bio-prepolymerization system according to claim 4, characterized in that, The traveling vehicle is mounted on a track.

6. The biological pre-depolymerization system for lignocellulosic waste according to claim 1, characterized in that, The container also includes a molecular membrane covering its top opening and a molecular membrane receiving and releasing device for receiving and releasing the molecular membrane.

7. The biological pre-depolymerization system for lignocellulosic waste according to claim 6, characterized in that, The top of the container is also covered with a rigid outer shell, one end of which is rotatably connected to the container body, and the other end is connected to the container body through a lifting mechanism.

8. The biological pre-depolymerization system for lignocellulosic waste according to claim 1, characterized in that, The spraying mechanism includes an upper spray pipe and a lower spray pipe spaced apart along the height direction of the pretreatment chamber; the nozzles of the upper spray pipe are inclined downwards, and the nozzles of the lower spray pipe are inclined upwards.

9. The biological pre-depolymerization system for lignocellulosic waste according to claim 1, characterized in that, The temperature control mechanism also includes a solar collector installed on the top of the container, which is connected to the heating device via a fluid pipeline.

10. The bio-prepolymerization system for lignocellulosic waste according to claim 1, characterized in that, The system also includes a foldable conveyor that connects to the discharge port of the silo via a hinge mechanism.

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