An integrated bioethanol preparation device

Abstract

This invention discloses an integrated bioethanol preparation device, relating to the field of ethanol preparation technology. It includes an enzymatic hydrolysis chamber, with a sleeve shaft rotatably connected to its rear side. A rotating shaft is rotatably connected inside the sleeve shaft. Stirring frames are fixedly connected to the inner ends of both the rotating shaft and the sleeve shaft. Multiple pusher plates are evenly distributed on the stirring frames. A gear ring is fixedly connected to the outer end of the sleeve shaft, with internal teeth on its inner surface. A first gear is fixedly connected to the outer end of the rotating shaft, and a fixing frame is fixedly connected to the rotating shaft outside the first gear. This invention, through the coordinated arrangement of two stirring frames and a microwave generator, avoids material accumulation during biomass pretreatment in ethanol production. It allows for more thorough degradation of lignin and effective dissociation of cellulose and hemicellulose by microwaves, improving enzymatic hydrolysis efficiency and ethanol conversion rate.

Description

Technical Field

[0001] This invention relates to the field of ethanol preparation technology, and more specifically to an integrated equipment for the preparation of bioethanol. Background Technology

[0002] In the bioethanol production process, biomass pretreatment is the core step that determines the ethanol conversion rate. Its purpose is to break down the dense structure of lignocellulose, dissociate lignin from cellulose and hemicellulose, and create conditions for subsequent enzymatic hydrolysis and fermentation reactions. Microwave pretreatment technology, due to its potential advantages such as rapid heating, strong penetration, and no need for high temperature and pressure, has been widely used in the pretreatment research of lignocellulose biomass. However, existing microwave pretreatment technologies and corresponding equipment used in bioethanol production still have many prominent defects and are fundamentally different from the microwave pretreatment technology of this invention, as detailed below: Most existing microwave pretreatment technologies in bioethanol production use a single microwave irradiation mode, which does not work synergistically with other pretreatment methods. They can only rely on the thermal effect of microwaves to initially destroy the surface structure of lignocellulose, and cannot achieve sufficient degradation of lignin and effective dissociation of cellulose and hemicellulose. This results in low efficiency of subsequent enzymatic hydrolysis and makes it difficult to improve the ethanol conversion rate.

[0003] Therefore, it is necessary to propose an integrated bioethanol preparation device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to address the problem that using a single microwave irradiation mode, without synergistic effects with other pretreatment methods, can only rely on the thermal effect of microwaves to initially destroy the surface structure of lignocellulose, failing to achieve sufficient degradation of lignin and effective dissociation of cellulose and hemicellulose, resulting in low efficiency of subsequent enzymatic hydrolysis. This invention provides an integrated bioethanol preparation device.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution: An integrated bioethanol preparation device includes an enzymatic hydrolysis chamber. A sleeve shaft is rotatably connected to the rear side of the enzymatic hydrolysis chamber. A rotating shaft is rotatably connected inside the sleeve shaft. A stirring frame is fixedly connected to the inner ends of both the rotating shaft and the sleeve shaft. Multiple pusher plates are evenly distributed on the stirring frame. A gear ring is fixedly connected to the outer end of the sleeve shaft. An internal toothed portion is provided on the inner circular surface of the gear ring. A first gear is fixedly connected to the outer end of the rotating shaft. A fixing frame is fixedly connected to the rotating shaft outside the first gear. A one-way bearing is fixedly connected to the inner side of the fixing frame through a shaft portion. A second gear that meshes with the internal toothed portion and the first gear is fixedly connected to the one-way bearing. A mounting plate is fixedly connected to the rear side of the enzymatic hydrolysis chamber. A first motor is fixedly connected to the mounting plate. The output shaft of the first motor is fixedly connected to the rotating shaft. A microwave generator is embedded in one side of the inner wall of the enzymatic hydrolysis chamber. A brush is fixedly connected to the side of the stirring frame near the microwave generator.

[0006] Preferably, a first hydraulic cylinder is fixedly connected to one side of the mounting plate, and a slide rail is fixedly connected to the other side of the mounting plate. A push plate is slidably arranged inside the slide rail. The telescopic rod of the first hydraulic cylinder is fixedly connected to the push plate. A limit rod is fixedly connected to the bottom of the push plate. The front end of the limit rod is movably sleeved on the front end of the slide rail. An installation groove is opened at the top of the push plate. A telescopic tongue is fixedly connected to the front end of the installation groove. A compression spring is fixedly connected between the inner end of the telescopic tongue and the inner wall of the installation groove.

[0007] Preferably, a temporary storage chamber is fixedly connected to the other side of the enzymatic hydrolysis chamber. The bottom of the temporary storage chamber is connected to the interior of the enzymatic hydrolysis chamber. A pulverizing chamber is provided at the top of the temporary storage chamber. Two pulverizing rollers are rotatably connected inside the pulverizing chamber. A third gear that meshes with each other is fixedly connected to one end of each pulverizing roller. A second motor is fixedly connected to one side of the pulverizing chamber. The output shaft of the second motor is fixedly connected to the output shaft of one of the pulverizing rollers.

[0008] Preferably, a discharge port is fixedly connected to one side of the top of the temporary storage bin, a screen is inclinedly arranged inside the discharge port, and a baffle is fixedly connected to the screen.

[0009] Preferably, a first gate is movably inserted into the bottom of the temporary storage compartment, and a second hydraulic cylinder is fixedly connected to both sides of the temporary storage compartment, with the piston tube of the second hydraulic cylinder fixedly connected to both sides of the first gate.

[0010] Preferably, a second gate is movably inserted into the bottom of the enzymatic hydrolysis chamber, and a third hydraulic cylinder is fixedly connected to both sides of the second gate at the bottom of the enzymatic hydrolysis chamber, with the piston rod of the third hydraulic cylinder fixedly connected to both sides of the second gate.

[0011] Preferably, the pusher plates located on different mixing racks are tilted to opposite sides, forming a figure-eight shape.

[0012] Preferably, the baffles are arranged crosswise on both sides of the screen, with the ends that are close to each other tilting downwards.

[0013] Preferably, the side of the telescopic tongue that contacts the fixing frame is an arc surface.

[0014] The beneficial effects of this invention are as follows: 1. This invention, through the combined arrangement of two stirring racks and a microwave generator, avoids material accumulation during the biomass pretreatment process in ethanol production. This allows the microwaves to more thoroughly degrade lignin and effectively dissociate cellulose and hemicellulose, thereby improving enzymatic hydrolysis efficiency and ethanol conversion rate. Attached Figure Description

[0015] Figure 1 This is an isometric view of the present invention; Figure 2 This is a front cross-sectional view of the enzymatic hydrolysis chamber structure of the present invention; Figure 3 This is a rear view schematic diagram of the enzymatic hydrolysis chamber structure of the present invention; Figure 4 This is a complete schematic diagram of the stirring rack structure of the present invention; Figure 5 This is a rear view schematic diagram of the enzymatic hydrolysis chamber structure of the present invention; Figure 6 This is an enlarged schematic diagram of the structure at point A in this invention; Figure 7 This is an enlarged schematic diagram of the structure of the first hydraulic cylinder of the present invention; Figure 8 This is an enlarged schematic diagram of the temporary storage bin structure of the present invention.

[0016] Reference numerals: 1. Enzymatic hydrolysis chamber; 3. Second hydraulic cylinder; 4. First gate; 5. Discharge port; 6. Second motor; 7. Grinding chamber; 8. Grinding roller; 9. Microwave generator; 11. Third hydraulic cylinder; 12. Second gate; 13. Rotating shaft; 14. Stirring frame; 15. Pusher plate; 16. First hydraulic cylinder; 17. Gear ring; 18. First motor; 19. Mounting plate; 20. Third gear; 21. Temporary storage chamber; 22. Baffle; 23. Screen; 24. Brush; 25. Second gear; 26. Fixing frame; 27. Grinding chamber; 28. First gear; 29. ​​Internal gear; 30. Slide rail; 31. Push plate; 32. Telescopic tongue; 33. Mounting groove; 34. Compression spring; 35. Sleeve shaft; 36. Limiting rod. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0018] Please refer to Figures 1-8. An integrated bioethanol preparation device includes an enzymatic hydrolysis chamber 1. A sleeve shaft 35 is rotatably connected to the rear side of the enzymatic hydrolysis chamber 1. A rotating shaft 13 is rotatably connected inside the sleeve shaft 35. A stirring frame 14 is fixedly connected to the inner ends of both the rotating shaft 13 and the sleeve shaft 35. Multiple pusher plates 15 are evenly distributed on the stirring frame 14. A gear ring 17 is fixedly connected to the outer end of the sleeve shaft 35. An internal tooth 29 is provided on the inner circular surface of the gear ring 17. A first gear 28 is fixedly connected to the outer end of the rotating shaft 13. The rotating shaft 13 is located on the outer side of the first gear 28. A fixing frame 26 is fixedly connected to the side. A one-way bearing 27 is fixedly connected to the inner side of the fixing frame 26 via a shaft. A second gear 25 that meshes with the internal gear 29 and the first gear 28 is fixedly connected to the one-way bearing 27. A mounting plate 19 is fixedly connected to the rear side of the enzymatic hydrolysis chamber 1. A first motor 18 is fixedly connected to the mounting plate 19. The output shaft of the first motor 18 is fixedly connected to the rotating shaft 13. A microwave generator 9 is embedded in one side of the inner wall of the enzymatic hydrolysis chamber 1. A brush 24 is fixedly connected to the side of the stirring rack 14 near the microwave generator 9.

[0019] A first hydraulic cylinder 16 is fixedly connected to one side of the mounting plate 19, and a slide rail 30 is fixedly connected to the other side of the mounting plate 19. A push plate 31 is slidably disposed within the slide rail 30. The telescopic rod of the first hydraulic cylinder 16 is fixedly connected to the push plate 31. A limit rod 36 is fixedly connected to the bottom of the push plate 31. The front end of the limit rod 36 is movably sleeved on the front end of the slide rail 30. A mounting groove 33 is formed at the top of the push plate 31. A telescopic tongue 32 is fixedly connected to the front end of the mounting groove 33. The inner end of the telescopic tongue 32 is connected to the mounting groove 33. A compression spring 34 is fixedly connected to the inner wall. When the fixed frame 26 is fixed, the first hydraulic cylinder 16 is extended forward, so that the push plate 31 is at a position that interferes with the movement trajectory of the fixed frame 26. After the fixed frame 26 contacts the telescopic tongue 32, the telescopic tongue 32 retracts into the mounting groove 33 and squeezes the compression spring 34. After the fixed frame 26 contacts the limit rod 36, the compression spring 34 pops out, the first motor 18 stops rotating, and the fixed frame 26 can be fixed. The stopping of the first motor 18 is controlled by the Hall sensor.

[0020] A temporary storage chamber 21 is fixedly connected to the other side of the enzymatic hydrolysis chamber 1. The bottom of the temporary storage chamber 21 is connected to the interior of the enzymatic hydrolysis chamber 1. A pulverizing chamber 7 is set on the top of the temporary storage chamber 21. Two pulverizing rollers 8 are rotatably connected inside the pulverizing chamber 7. A third gear 20 that meshes with each other is fixedly connected to one end of the pulverizing rollers 8. A second motor 6 is fixedly connected to one side of the pulverizing chamber 7. The output shaft of the second motor 6 is fixedly connected to the output shaft of one of the pulverizing rollers 8. When the material is fed into the temporary storage chamber 21, the second motor 6 drives the pulverizing rollers 8 to rotate and pulverize the material. The pulverized material falls onto the screen 23. Material that meets the requirements can enter the temporary storage chamber 21 for storage. Material that does not meet the requirements falls off the screen 23. After the enzymatic hydrolysis chamber 1 finishes working, the second gate 12 opens and discharges the temporarily stored material into the enzymatic hydrolysis chamber 1.

[0021] A discharge port 5 is fixedly connected to one side of the top of the temporary storage bin 21. A screen 23 is inclinedly installed inside the discharge port 5, and a baffle 22 is fixedly connected to the screen 23.

[0022] The bottom of the temporary storage compartment 21 is movably connected to a first gate plate 4, and the two sides of the temporary storage compartment 21 are fixedly connected to a second hydraulic cylinder 3. The piston tube of the second hydraulic cylinder 3 is fixedly connected to both sides of the first gate plate 4.

[0023] A second gate 12 is movably inserted into the bottom of the enzymatic hydrolysis chamber 1. A third hydraulic cylinder 11 is fixedly connected to both sides of the second gate 12 at the bottom of the enzymatic hydrolysis chamber 1. The piston rod of the third hydraulic cylinder 11 is fixedly connected to both sides of the second gate 12.

[0024] The pusher plates 15 located on different mixing racks 14 are tilted to opposite sides, forming an eight-shaped arrangement. This eight-shaped arrangement facilitates the sliding of materials and prevents them from accumulating on top. At the same time, when cleaning materials, the materials can be gathered towards the center for easy discharge.

[0025] The baffles 22 are arranged crosswise on both sides of the screen 23, with the ends that are close to each other tilting downwards, so that the falling path of the material is S-shaped, increasing the contact area between the material and the screen, and making the screening more effective.

[0026] The side of the telescopic tongue 32 that comes into contact with the fixing frame 26 is an arc surface.

[0027] Working principle: After the material is crushed, it enters the enzymatic hydrolysis chamber 1. The first motor 18 is activated, driving the rotating shaft 13 to rotate. At this time, the fixed frame 26 is in a fixed state. The first gear 28 of the rotating shaft 13 rotates, driving the second gear 25 to rotate. Under the action of the second gear 25, the gear ring 17 rotates in the opposite direction, driving the two stirring frames 14 to rotate in the opposite direction. Through the pusher setting, the material can be lifted in different directions and then fall, making the stirring more uniform and avoiding local overheating. Multiple sets of evenly distributed microwave generators 9 are embedded in the side wall of the microwave pretreatment cavity. Each set of microwave generators 9 can be started and stopped independently to achieve uniform distribution of microwave energy in the cavity. The first motor 18 is driven by a stepper motor, and the speed can be adjusted from 5-15 r / min. The cavity is also equipped with an infrared sensor. External temperature and humidity sensors collect environmental parameters within the chamber in real time and transmit them to the central control module. The chamber sidewall is equipped with an atomizing humidification device, which maintains the humidity within the chamber at 40-50% through closed-loop regulation by the central control module. The microwave power adjustment range is 500-800W, the processing temperature is 60-70℃, and the processing time is 15-25min. This achieves the loosening of biomass fiber bundles and partial degradation of lignin, destroying the cellulose-hemicellulose-lignin binding structure. After processing, the fixing frame 26 is loosened. Due to the left and right movement of the one-way bearing 27, the second gear 25 cannot rotate. At this time, the two stirring frames 14 rotate in the same direction, opening the second gate 12 at the bottom. Under the action of the inwardly tilting pusher plate 15, the material in the enzymatic hydrolysis chamber 1 is gathered towards the center and finally discharged from the enzymatic hydrolysis chamber 1.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated bioethanol preparation device, characterized in that: The device includes an enzymatic hydrolysis chamber (1), a sleeve shaft (35) is rotatably connected to the rear side of the enzymatic hydrolysis chamber (1), a rotating shaft (13) is rotatably connected inside the sleeve shaft (35), a stirring frame (14) is fixedly connected to the inner ends of both the rotating shaft (13) and the sleeve shaft (35), a plurality of pusher plates (15) are evenly distributed on the stirring frame (14), a gear ring (17) is fixedly connected to the outer end of the sleeve shaft (35), an internal tooth part (29) is provided on the inner circular surface of the gear ring (17), a first gear (28) is fixedly connected to the outer end of the rotating shaft (13), and a fixing frame is fixedly connected to the rotating shaft (13) outside the first gear (28). 26), a one-way bearing (27) is fixedly connected to the inner side of the fixed frame (26) via a shaft. A second gear (25) that meshes with the internal gear (29) and the first gear (28) is fixedly connected to the one-way bearing (27). A mounting plate (19) is fixedly connected to the rear side of the enzymatic hydrolysis chamber (1). A first motor (18) is fixedly connected to the mounting plate (19). The output shaft of the first motor (18) is fixedly connected to the rotating shaft (13). A microwave generator (9) is embedded in one side of the inner wall of the enzymatic hydrolysis chamber (1). A brush (24) is fixedly connected to the side of the stirring rack (14) near the microwave generator (9).

2. The integrated bioethanol preparation equipment according to claim 1, characterized in that: A first hydraulic cylinder (16) is fixedly connected to one side of the mounting plate (19), and a slide rail (30) is fixedly connected to the other side of the mounting plate (19). A push plate (31) is slidably arranged in the slide rail (30). The telescopic rod of the first hydraulic cylinder (16) is fixedly connected to the push plate (31). A limit rod (36) is fixedly connected to the bottom of the push plate (31). The front end of the limit rod (36) is movably sleeved on the front end of the slide rail (30). An installation groove (33) is opened at the top of the push plate (31). A telescopic tongue (32) is fixedly connected to the front end of the installation groove (33). A compression spring (34) is fixedly connected between the inner end of the telescopic tongue (32) and the inner wall of the installation groove (33).

3. The integrated bioethanol preparation equipment according to claim 1, characterized in that: A temporary storage chamber (21) is fixedly connected to the other side of the enzymatic hydrolysis chamber (1). The bottom of the temporary storage chamber (21) is connected to the interior of the enzymatic hydrolysis chamber (1). A pulverizing chamber (7) is provided on the top of the temporary storage chamber (21). Two pulverizing rollers (8) are rotatably connected inside the pulverizing chamber (7). A third gear (20) that meshes with each other is fixedly connected to one end of the pulverizing roller (8). A second motor (6) is fixedly connected to one side of the pulverizing chamber (7). The output shaft of the second motor (6) is fixedly connected to the output shaft of one of the pulverizing rollers (8).

4. The integrated bioethanol preparation equipment according to claim 1, characterized in that: The top side of the temporary storage bin (21) is fixedly connected to a discharge port (5), and a screen (23) is inclinedly arranged inside the discharge port (5). A baffle (22) is fixedly connected to the screen (23).

5. The integrated bioethanol preparation equipment according to claim 1, characterized in that: The bottom of the temporary storage compartment (21) is movably connected to a first gate plate (4), and the two sides of the temporary storage compartment (21) are fixedly connected to a second hydraulic cylinder (3). The piston tube of the second hydraulic cylinder (3) is fixedly connected to both sides of the first gate plate (4).

6. The integrated bioethanol preparation equipment according to claim 1, characterized in that: The bottom of the enzymatic hydrolysis chamber (1) is movably connected to a second gate (12), and the bottom of the enzymatic hydrolysis chamber (1) is fixedly connected to the two sides of the second gate (12). The piston rod of the third hydraulic cylinder (11) is fixedly connected to the two sides of the second gate (12).

7. The integrated bioethanol preparation equipment according to claim 1, characterized in that: The pusher plates (15) located on different mixing racks (14) are tilted to opposite sides, forming a figure-eight shape.

8. The integrated bioethanol preparation equipment according to claim 1, characterized in that: The baffles (22) are arranged crosswise on both sides of the screen (23), with the ends that are close to each other tilting downwards.

9. The integrated bioethanol preparation equipment according to claim 1, characterized in that: The side of the telescopic tongue (32) that comes into contact with the fixing frame (26) is an arc surface.

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