A processing device and method for bio-based ethylene glycol production

Abstract

The present invention relates to the field of biological fermentation technology, and discloses a processing device and method for preparing ethylene glycol from a bio-based material, comprising a tank body, an adjusting tube plugged into the top of the tank body, a shaft rod slidably plugged into the adjusting tube, a crushing knife and a limit block installed on the outside of the shaft rod, the crushing knife is arranged in the tank body, the limit block is arranged on the inside of the adjusting tube, a limit groove used in conjunction with the limit block is provided on the inner wall of the adjusting tube, a first set of rods is arranged on the upper side of the tank body, the upper end of the shaft rod is slidably plugged into the inside of the first set of rods, and a motor for driving the first set of rods is installed on the outside of the first set of rods. Through the coordinated use of the limit block and the limit groove, the shaft rod drives the crushing knife to rotate and rise and fall at the same time, the straw in the tank body is quickly crushed, water is injected into the tank body to soak, the straw is saccharified, yeast is added into the tank body, the tank body is sealed and the air in the tank body is extracted to form an anaerobic environment, so that the straw is fermented to produce ethylene glycol, thereby improving the production efficiency of ethylene glycol.

Description

Technical Field

[0001] The present invention relates to the field of biofermentation technology, and in particular to a processing device and method for bio-based ethylene glycol production. Background Art

[0002] Bio-based ethylene glycol is a type of ethylene glycol produced from renewable biomass raw materials (such as plants). Compared with traditional petroleum-based ethylene glycol, it has a lower carbon footprint and is more environmentally friendly.

[0003] The production of bio-based ethylene glycol mainly includes the following key steps: 1. Raw material pretreatment: pretreat biomass raw materials such as corn straw and sugarcane bagasse to remove impurities and convert them into a form suitable for further processing, usually including crushing, screening, soaking in water and chemical treatment to improve the saccharification efficiency of the raw materials; 2. Saccharification: add the pretreated raw materials to the saccharification reactor, and convert the cellulose and hemicellulose complex carbohydrates in the raw materials into fermentable monosaccharides such as glucose and galactose by adding catalysts such as cellulase and β-glucosidase; 3. Fermentation: transfer the saccharified liquid to the fermentation tank, add suitable modified yeast or Fermentation microorganisms such as bacteria convert monosaccharides into ethylene glycol through the fermentation process. The optimization of the fermentation process involves controlling the temperature, pH value and fermentation time to increase the yield and selectivity of ethylene glycol; 4. Separation and purification: The ethylene glycol contained in the fermentation broth needs to be extracted and concentrated by distillation, membrane separation or ion exchange to obtain high-purity ethylene glycol; 5. Refining: The extracted ethylene glycol is further refined to remove residual impurities and moisture. Distillation, adsorption and other methods are usually used to achieve the high purity requirements of ethylene glycol. These steps can be implemented in modern processing equipment, usually including automated control systems to improve production efficiency and stability.

[0004] At present, the existing technology usually adopts the method of fermenting corn straw to produce ethylene glycol. Generally, the screened straw needs to be crushed and soaked, then enzyme saccharification is added, and finally yeast is added for fermentation. However, crushing, saccharification and fermentation are usually carried out in different equipment, and the straw product needs to be transferred many times. The steps are cumbersome and time-consuming and labor-intensive, which easily affects the processing efficiency of ethylene glycol. Therefore, it does not meet the existing needs. In this regard, we propose a processing device and method for bio-based ethylene glycol. Summary of the invention

[0005] The present invention provides a processing device and method for bio-based ethylene glycol production, which has the beneficial effect of simplifying the processing steps, thereby improving the production efficiency of ethylene glycol, and solves the problem that the prior art mentioned in the above background technology usually adopts the method of fermenting corn straw to produce ethylene glycol, generally needs to crush and soak the screened straw, then add enzyme saccharification, and finally add yeast fermentation, but the crushing, saccharification and fermentation are usually carried out in different equipment, and the straw product needs to be transferred multiple times, the steps are cumbersome and time-consuming and labor-intensive, which easily affects the problem of ethylene glycol processing efficiency.

[0006] The present invention provides the following technical solution: a processing device for bio-based ethylene glycol, comprising a tank body and a feed hopper arranged on the upper side of the tank body, an adjusting tube inserted on the top of the tank body, an axle rod slidably inserted in the adjusting tube, a crushing knife and a limit block are installed on the outside of the axle rod, the crushing knife is arranged inside the tank body, the limit block is arranged on the inside of the adjusting tube, a limit groove used in conjunction with the limit block is opened on the inner wall of the adjusting tube, the limit block is slidably inserted in the limit groove, a first sleeve rod is arranged on the upper side of the tank body, the upper end of the sleeve rod is slidably inserted in the inside of the first sleeve rod, a motor for driving the first sleeve rod is installed on the outside of the first sleeve rod, and the output shaft of the motor is drivingly connected to the first sleeve rod.

[0007] As an optional solution of a bio-based ethylene glycol processing device according to the present invention, the limiting groove is configured to be V-shaped, and the head and tail ends of the limiting groove are connected.

[0008] As an optional solution of a bio-based ethylene glycol processing device described in the present invention, a slider is installed at the end of the shaft rod, the number of the sliders is set to be several, a groove body used in conjunction with the slider is opened on the inner side of the first sleeve rod, the slider is slidably inserted in the groove body on the inner side of the first sleeve rod, a support frame is installed on the outer side of the tank body, the motor is connected to the support frame so that the motor is fixed on the upper side of the tank body, and a heater is arranged on the inner side of the tank body.

[0009] As an optional solution of the processing device for bio-based ethylene glycol production described in the present invention, a second sleeve rod is rotatably inserted at the bottom of the tank body, the lower end of the shaft rod is slidably inserted into the inner side of the second sleeve rod, a turntable is sleeved on the outer side of the second sleeve rod, and a limiting component is arranged between the turntable and the second sleeve rod, and the limiting component includes an outer ring connected to the turntable, an inner ring connected to the second sleeve rod, a ratchet rotatably installed on the side of the inner ring, an elastic sheet installed on the side of the inner ring and in contact with the ratchet, and a tooth groove opened on the inner wall of the outer ring and used in conjunction with the ratchet.

[0010] As an optional solution of a bio-based ethylene glycol processing device according to the present invention, wherein: a liquid cylinder is installed at the bottom of the tank body, a first piston is slidably arranged inside the liquid cylinder, a piston rod is installed in the middle of the first piston, a track groove used in conjunction with the piston rod is opened on the upper side of the turntable, the track groove is set as an annular groove, and the center of the track groove is close to one side of the liquid cylinder, and the end of the piston rod is slidably inserted in the track groove;

[0011] A first one-way valve is plugged into the side of the liquid cylinder, and a first liquid pipe is connected to the end of the first one-way valve. The first liquid pipe is communicated with an external water source, and the external water source enters the liquid cylinder through the first liquid pipe and the first one-way valve. A second one-way valve is also plugged into the side of the liquid cylinder, and a second liquid pipe is connected to the end of the second one-way valve. The end of the second liquid pipe is plugged into the side of the tank body, and the water in the liquid cylinder enters the tank body through the second one-way valve and the second liquid pipe.

[0012] As an optional solution of the processing device for bio-based ethylene glycol production described in the present invention, a first gear is sleeved on the outer side of the first sleeve rod, a second gear is arranged on the outer side of the first gear, and the second gear is intermittently meshed with the first gear.

[0013] As an optional solution of a processing device for bio-based ethylene glycol production described in the present invention, a moving block is slidably inserted into the inner side of the tank body, a bolt is threadedly connected to the side of the moving block, a thread groove for use with the bolt is opened on the side of the tank body, and the number of the thread grooves is set to two. The bolt is threadedly connected in the thread groove away from the first gear, a rotating shaft is rotatably inserted into the side of the moving block, and a second gear is installed at the end of the rotating shaft. At this time, the second gear is away from the first gear and is disengaged from the first gear.

[0014] As an optional solution of a bio-based ethylene glycol processing device described in the present invention, a connecting rod is installed on the outside of the tank body, a cylinder is installed on the end of the connecting rod, a second piston is slidably arranged on the inside of the cylinder, a connecting rod is rotatably connected between the second piston and the second gear, the connecting rod includes a first straight rod rotatably installed on the outside of the second gear, and a second straight rod rotatably installed in the middle of the second piston, and the end of the first straight rod is rotatably connected to the end of the second straight rod.

[0015] As an optional solution of the processing device for bio-based ethylene glycol production described in the present invention, wherein: a third one-way valve is inserted into the side of the cylinder, and the end of the third one-way valve is connected to a first air pipe, and the gas in the cylinder is discharged through the third one-way valve and the first air pipe; a fourth one-way valve is also inserted into the side of the cylinder, and the end of the fourth one-way valve is connected to a second air pipe, and the end of the second air pipe is inserted into the side of the tank body, and the gas in the tank body enters the cylinder through the second air pipe and the fourth one-way valve.

[0016] The present invention also provides a bio-based method for preparing ethylene glycol, comprising the following specific steps:

[0017] S1. Crushing the straw: the screened straw is put into the tank body through the feed hopper, the motor drives the crushing knife to rotate in the tank body through the shaft, and the limiting block and the limiting groove are used in cooperation, so that the crushing knife rotates and moves up and down, thereby crushing the straw in the tank body;

[0018] S2. Saccharification of straw: external water source enters the liquid cylinder through the first liquid pipe, and then enters the tank body through the second liquid pipe, soaks the crushed straw therein, and at the same time, the straw and water are mixed evenly by the crushing knife, and the enzyme required for saccharification is added through the feed hopper, thereby saccharifying the straw;

[0019] S3. Fermentation of straw: adding modified yeast required for fermentation into the tank body, sealing the tank body, and then exhausting the air in the tank body through the cylinder to form an anaerobic environment in the tank body, and controlling the temperature during the fermentation process through the heater, so that the straw fermentation produces ethylene glycol.

[0020] The present invention has the following beneficial effects:

[0021] 1. The bio-based ethylene glycol processing device and method, wherein the screened straw is fed into the tank body through the feed hopper, and the motor drives the first set of rods to rotate, so that the first set of rods drives the shaft rod and the crushing knife to rotate in the tank body. Moreover, when the shaft rod rotates, the limit block slides in the limit groove, and when the limit block slides in the descending section of the limit groove, the shaft rod drives the crushing knife to rotate and descend at the same time, and then the limit block slides in the ascending section of the limit groove, and the shaft rod drives the crushing knife to rotate and ascend again, so that the crushing knife rotates and moves up and down at the same time, thereby quickly crushing the straw in the tank body;

[0022] Subsequently, an appropriate amount of water is injected into the tank body to soak the crushed straw therein, and at the same time, the straw and water are evenly mixed by a rotating crushing knife so that the straw and water are fully contacted and soaked, and the enzyme required for saccharification is added through the feed hopper to saccharify the straw; finally, the modified yeast required for fermentation is added into the tank body, the tank body is sealed, and the air in the tank body is extracted to form an anaerobic environment in the tank body, and the fermentation temperature is controlled by a heater so that the straw is fermented to produce ethylene glycol, thereby improving the production efficiency of ethylene glycol.

[0023] 2. The processing device and method for preparing ethylene glycol from bio-based materials: when the shaft drives the crushing knife to rotate in the forward direction, the straw in the tank body is crushed, and at the same time, the ratchet rotates along the direction of the tooth groove, so that the second set of rods and the turntable rotate relative to each other, so that the turntable remains stationary; when the crushed straw needs to be soaked, the shaft and the second set of rods are controlled by the motor to rotate in the opposite direction, so that the second set of rods drives the inner ring and the ratchet to rotate in the opposite direction of the tooth groove, so that the ratchet is engaged in the tooth groove and drives the turntable to rotate together, and the first piston is driven to push and pull back and forth in the liquid cylinder through the cooperation of the piston rod and the track groove, so that the external water source is sucked into the liquid cylinder through the first liquid pipe and the first one-way valve, and then the water in the liquid cylinder is injected into the tank body through the second one-way valve and the second liquid pipe, so as to facilitate the soaking and saccharification of the straw in the tank body;

[0024] After the straw saccharification is completed, the second gear is moved to engage with the first gear. Similarly, the first set of rods is driven by the motor to rotate forward again. Through the engagement of the first gear and the second gear, the connecting rod drives the second piston to reciprocate in the cylinder. The gas in the tank is drawn into the cylinder through the second air pipe and the fourth one-way valve, and then discharged through the third one-way valve and the first air pipe, so as to facilitate the extraction of air in the tank to create an anaerobic environment, thereby improving the fermentation efficiency of yeast on the straw, thereby further improving the production efficiency of ethylene glycol.

[0025] 3. In the processing device and method for producing ethylene glycol from bio-based materials, when it is not necessary to extract the air in the tank, the bolt is threadedly connected in a thread groove away from the first gear. When it is necessary to extract the air in the tank, the moving block is pushed toward the first gear so that the second gear meshes with the first gear, and the bolt is threadedly connected in a thread groove close to the first gear, so as to facilitate the control of the separation and meshing of the first gear and the second gear, thereby facilitating the extraction of air in the tank to create an anaerobic environment when fermentation begins. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0027] Figure 2 It is a schematic diagram of the cutaway structure of the present invention.

[0028] Figure 3 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0029] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the present invention.

[0030] Figure 5 It is a schematic diagram of the internal explosion structure of the present invention.

[0031] Figure 6 For the present invention Figure 5 Enlarged structural diagram at B in the middle.

[0032] Figure 7 It is a schematic diagram of the unfolded structure of the regulating tube of the present invention.

[0033] Figure 8 It is a schematic diagram of the cutaway structure of the limiting component of the present invention.

[0034] In the figure: 100, tank body; 110, feed hopper; 120, adjustment tube; 130, shaft; 140, crushing knife; 150, limit block; 160, limit groove; 170, first set of rods; 171, slider; 180, motor; 181, support frame; 190, heater; 200, second set of rods; 201, turntable; 202, limiting assembly; 2021, outer ring; 2022, inner ring; 2023, ratchet; 2024, elastic sheet; 2025, tooth groove; 210, cylinder; 211, first piston; 212, piston rod; 213, track groove; 214, first one-way valve; 215, first liquid pipe; 216, second one-way valve; 217, second liquid pipe; 220, first gear; 221, moving block; 222, bolt; 223, thread groove; 224, rotating shaft; 225, second gear; 230, connecting rod; 231, cylinder; 232, second piston; 233, connecting rod; 2331, first straight rod; 2332, second straight rod; 240, third one-way valve; 241, first air pipe; 242, fourth one-way valve; 243, second air pipe. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example 1: This example aims to solve the problem that the conventional method of producing ethylene glycol by fermenting corn stalks usually requires crushing and soaking the screened stalks, then adding enzymes for saccharification, and finally adding yeast for fermentation. However, crushing, saccharification and fermentation are usually carried out in different equipment, and the stalk products need to be transferred multiple times. The steps are cumbersome and time-consuming, which easily affects the processing efficiency of ethylene glycol. Please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 A processing device for bio-based ethylene glycol production includes a tank body 100 and a feed hopper 110 fixedly arranged on the upper side of the tank body 100. The feed hopper 110 is also hinged with a hopper cover for sealing the feed hopper 110. An adjusting tube 120 is interference-inserted on the top of the tank body 100. A shaft rod 130 is slidably inserted in the adjusting tube 120, and the insertion part of the shaft rod 130 and the adjusting tube 120 remains sealed.

[0037] A crushing knife 140 and a limit block 150 are fixedly installed on the outside of the shaft rod 130. The crushing knife 140 can be used to crush the screened straw, and can also be used to mix the straw and water evenly. The crushing knife 140 is arranged inside the tank body 100, and the limit block 150 is arranged on the inner side of the adjusting tube 120. The inner wall of the adjusting tube 120 is provided with a limit groove 160 used in conjunction with the limit block 150. The limit block 150 is slidably inserted in the limit groove 160. The limit groove 160 is set in a V shape, and the head and tail ends of the limit groove 160 are connected, so that the limit block 150 can slide in a cycle in the limit groove 160.

[0038] A first rod 170 is provided on the upper side of the tank body 100, and the upper end of the shaft rod 130 is slidably inserted into the inner side of the first rod 170, and a slider 171 is fixedly installed at the end of the shaft rod 130. The number of sliders 171 is set to be several, and they are evenly arranged in the circumferential direction on the outer side of the shaft rod 130. A groove body used in conjunction with the slider 171 is opened on the inner side of the first rod 170, and the slider 171 is slidably inserted in the groove body on the inner side of the first rod 170, so that the shaft rod 130 slides in the first rod 170 and rotates with the rotation of the first rod 170. A motor 180 for driving the first rod 170 is fixedly installed on the top of the first rod 170, and the output shaft of the motor 180 is fixedly connected to the first rod 170.

[0039] A support frame 181 is fixedly installed on the outside of the tank body 100, and the motor 180 is fixedly connected to the support frame 181, so that the motor 180 is fixed on the upper side of the tank body 100. A heater 190 is arranged on the inside of the tank body 100 to control the temperature during the fermentation process. A temperature sensor and a pH meter are arranged in the tank body 100 to detect the temperature and pH during fermentation in real time, so as to maintain the temperature and pH within the most suitable range for fermentation. A discharge pipe and a discharge valve are arranged at the bottom of the tank body 100 to take the fermented materials out of the tank body 100.

[0040] In this embodiment: the screened straw is put into the tank body 100 through the feed hopper 110, and the motor 180 drives the first set of rods 170 to rotate, so that the first set of rods 170 drives the shaft rod 130 and the crushing knife 140 to rotate in the tank body 100. Moreover, when the shaft rod 130 rotates, the limit block 150 slides in the limit groove 160. When the limit block 150 slides in the descending section of the limit groove 160, the shaft rod 130 drives the crushing knife 140 to rotate and descend at the same time, and then the limit block 150 slides in the ascending section of the limit groove 160, and the shaft rod 130 drives the crushing knife 140 to rotate and then rises, so that the crushing knife 140 rotates and moves up and down, thereby quickly crushing the straw in the tank body 100;

[0041] Subsequently, a proper amount of water is injected into the tank body 100 to soak the crushed straw therein, and at the same time, the straw and water are stirred evenly by the rotating crushing knife 140 so that the straw is fully contacted and soaked with water, and the enzyme required for saccharification is added through the feed hopper 110 to saccharify the straw; finally, the modified yeast required for fermentation is added into the tank body 100, the tank body 100 is sealed, and the air in the tank body 100 is extracted so that an anaerobic environment is formed in the tank body 100, and the fermentation temperature is controlled by the heater 190 so that the straw is fermented to produce ethylene glycol, thereby improving the production efficiency of ethylene glycol and solving the problem that the prior art usually adopts the method of fermenting corn straw to produce ethylene glycol, which generally requires the screened straw to be crushed and soaked, then enzyme saccharification is added, and finally yeast is added for fermentation. However, the crushing, saccharification and fermentation are usually carried out in different equipment, and the straw product needs to be transferred multiple times. The steps are cumbersome and time-consuming and labor-intensive, which easily affects the processing efficiency of ethylene glycol.

[0042] Embodiment 2: This embodiment is intended to solve the problem that it is inconvenient to inject water into the tank body 100 for soaking, and it is inconvenient to extract the air in the tank body 100 to create an anaerobic environment, which easily affects the fermentation of the straw and thus easily affects the efficiency of ethylene glycol production. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 8A second rod 200 is rotatably inserted at the bottom of the tank body 100 through a sealed bearing, and the lower end of the shaft rod 130 is slidably inserted into the inner side of the second rod 200. A turntable 201 is sleeved on the outer side of the second rod 200, and a limiting component 202 is arranged between the turntable 201 and the second rod 200. The limiting component 202 includes an outer ring 2021 fixedly connected to the turntable 201, an inner ring 2022 fixedly connected to the second rod 200, a ratchet 2023 rotatably mounted on the side of the inner ring 2022, an elastic sheet 2024 fixedly mounted on the side of the inner ring 2022 and in conflict with the ratchet 2023, and a tooth groove 2025 opened on the inner wall of the outer ring 2021 and used in conjunction with the ratchet 2023, and the ratchet 2023 is clamped in the tooth groove 2025.

[0043] A liquid cylinder 210 is fixedly installed at the bottom of the tank body 100, a first piston 211 is slidably arranged inside the liquid cylinder 210, a piston rod 212 is fixedly installed in the middle of the first piston 211, a track groove 213 used in conjunction with the end of the piston rod 212 is opened on the upper side of the turntable 201, the track groove 213 is set as an annular groove, and the center of the track groove 213 is close to one side of the liquid cylinder 210, and the end of the piston rod 212 is slidably inserted in the track groove 213;

[0044] A first one-way valve 214 is fixedly connected to the side of the liquid cylinder 210, and a first liquid pipe 215 is connected to the end of the first one-way valve 214. The first liquid pipe 215 is communicated with an external water source, and the external water source enters the liquid cylinder 210 through the first liquid pipe 215 and the first one-way valve 214. A second one-way valve 216 is also fixedly connected to the side of the liquid cylinder 210, and a second liquid pipe 217 is connected to the end of the second one-way valve 216. The end of the second liquid pipe 217 is fixedly connected to the side of the tank body 100, and the water in the liquid cylinder 210 enters the tank body 100 through the second one-way valve 216 and the second liquid pipe 217.

[0045] A first gear 220 is fixedly sleeved on the outside of the first sleeve rod 170, a second gear 225 is rotatably arranged on the outside of the first gear 220, the second gear 225 is intermittently meshed with the first gear 220, a connecting rod 230 is fixedly installed on the outside of the tank body 100, a cylinder 231 is fixedly installed on the end of the connecting rod 230, a second piston 232 is slidably arranged on the inside of the cylinder 231, a connecting rod 233 is rotatably connected between the second piston 232 and the second gear 225, the connecting rod 233 includes a first straight rod 2331 rotatably installed on the outside of the second gear 225 by rivets, and a second straight rod 2332 rotatably installed in the middle of the second piston 232, and the end of the first straight rod 2331 is rotatably connected to the end of the second straight rod 2332.

[0046] A fourth one-way valve 242 is fixedly connected to the side of the cylinder 231, and the end of the fourth one-way valve 242 is connected to the second air pipe 243, and the end of the second air pipe 243 is fixedly connected to the side of the tank body 100. The gas in the tank body 100 enters the cylinder 231 through the second air pipe 243 and the fourth one-way valve 242. A third one-way valve 240 is also fixedly connected to the side of the cylinder 231, and the end of the third one-way valve 240 is connected to the first air pipe 241. The gas in the cylinder 231 is discharged through the third one-way valve 240 and the first air pipe 241.

[0047] In this embodiment, when the shaft 130 drives the crushing knife 140 to rotate forward, the straw in the tank body 100 is crushed, and at the same time, the ratchet 2023 rotates along the direction of the tooth groove 2025, so that the second set of rods 200 and the rotating disk 201 rotate relative to each other, so that the rotating disk 201 remains stationary; when the crushed straw needs to be soaked, the shaft 130 and the second set of rods 200 are controlled by the motor 180 to rotate in the opposite direction, so that the second set of rods 200 drives the inner ring 2022 and the ratchet 2023 to rotate against the tooth groove 2025. 025, so that the ratchet 2023 is engaged in the tooth groove 2025 and drives the rotating disk 201 to rotate together, and the piston rod 212 and the track groove 213 are used in cooperation to drive the first piston 211 to push and pull back and forth in the liquid cylinder 210, so that the external water source is sucked into the liquid cylinder 210 through the first liquid pipe 215 and the first one-way valve 214, and then the water in the liquid cylinder 210 is injected into the tank body 100 through the second one-way valve 216 and the second liquid pipe 217, so as to facilitate the soaking and saccharification of the straw in the tank body 100;

[0048] After the straw saccharification is completed, the second gear 225 is moved to engage with the first gear 220. Similarly, the first set of rods 170 is driven to rotate forwardly by the motor 180 again. Through the engagement of the first gear 220 and the second gear 225, the connecting rod 233 drives the second piston 232 to reciprocate in the cylinder 231. The gas in the tank body 100 is drawn into the cylinder 231 through the second air pipe 243 and the fourth one-way valve 242, and then discharged through the third one-way valve 240 and the first air pipe 241, so as to facilitate the extraction of air in the tank body 100 to create an anaerobic environment, thereby improving the fermentation efficiency of yeast on the straw, thereby further improving the production efficiency of ethylene glycol.

[0049] It should be noted that during the fermentation process, a large amount of gas will be generated in the tank body 100, which will increase the air pressure in the tank body 100. The excess gas in the tank body 100 can be discharged in sequence through the second air pipe 243, the fourth one-way valve 242, the cylinder 231, the third one-way valve 240 and the first air pipe 241. Because yeast is an anaerobic bacterium, it is more active in an anaerobic environment and is more conducive to the fermentation of saccharified straw. During the fermentation process of the straw, microorganisms decompose sugars to produce carbon dioxide, methane and other gases. These gases are by-products of microbial metabolic activities. Especially under anaerobic conditions, the amount of methane produced will be relatively large. The gas produced by straw fermentation usually needs to be discharged from the fermenter to prevent gas accumulation in the fermenter, resulting in excessive pressure or other safety problems. The exhaust system can help control the accumulation of gas during the fermentation process, ensure the smooth progress of the fermentation process, and reduce potential hazards to equipment and the environment.

[0050] Embodiment 3: This embodiment is intended to facilitate solving the problem that it is inconvenient to control the separation and engagement of the first gear 220 and the second gear 225, and thus it is inconvenient to control when to extract the air in the tank body 100. This embodiment is an improvement made on the basis of Embodiment 2. For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A moving block 221 is slidably inserted into the inner side of the tank body 100, and a bolt 222 is threadedly connected to the side of the moving block 221. A threaded groove 223 used in conjunction with the bolt 222 is opened on the side of the tank body 100, and the number of the threaded grooves 223 is set to two. The bolt 222 is threadedly connected in the threaded groove 223 away from the first gear 220. A rotating shaft 224 is rotatably inserted into the upper side of the moving block 221 through a bearing, and a second gear 225 is fixedly installed on the end of the rotating shaft 224. At this time, the second gear 225 is away from the first gear 220 and is disengaged from the first gear 220.

[0051] In this embodiment: when it is not necessary to extract the air in the tank body 100, the bolt 222 is threadedly connected in the thread groove 223 away from the first gear 220. When it is necessary to extract the air in the tank body 100, the moving block 221 is pushed in the direction of the first gear 220, so that the second gear 225 is meshed with the first gear, and the bolt 222 is threadedly connected in the thread groove 223 close to the first gear 220, so as to facilitate the control of the separation and meshing of the first gear 220 and the second gear 225, thereby facilitating the extraction of air in the tank body 100 to create an anaerobic environment when fermentation begins.

[0052] Embodiment 4, a bio-based method for producing ethylene glycol, comprising the following specific steps:

[0053] S1. Crushing of straw: The screened straw is put into the tank body 100 through the feed hopper 110, and the motor 180 drives the crushing knife 140 to rotate in the tank body 100 through the shaft 130. At the same time, through the cooperation of the limit block 150 and the limit groove 160, the crushing knife 140 rotates and moves up and down, thereby crushing the straw in the tank body 100;

[0054] S2. Saccharification of straw: water from the outside enters the liquid cylinder 210 through the first liquid pipe 215, and then enters the tank body 100 through the second liquid pipe 217, and soaks the crushed straw therein, and at the same time, the straw and water are mixed evenly by the crushing knife 140, and the enzyme required for saccharification is added through the feed hopper 110, thereby saccharifying the straw;

[0055] S3. Fermentation of straw: Add the modified yeast required for fermentation into the tank body 100, seal the tank body 100, and then discharge the air in the tank body 100 through the cylinder 231 to form an anaerobic environment in the tank body 100, and control the temperature during the fermentation process through the heater 190, so that the straw ferments to produce ethylene glycol.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A processing device for producing ethylene glycol from biomass, comprising a tank body (100) and a feed hopper (110) arranged on the upper side of the tank body (100), characterized in that: An adjusting tube (120) is inserted at the top of the tank body (100), a shaft (130) is slidably inserted in the adjusting tube (120), a crushing knife (140) and a limit block (150) are installed on the outside of the shaft (130), the crushing knife (140) is arranged inside the tank body (100), the limit block (150) is arranged on the inside of the adjusting tube (120), a limit groove (160) for use with the limit block (150) is opened on the inner wall of the adjusting tube (120), the limit block (150) is slidably inserted in the limit groove (160), a first sleeve rod (170) is arranged on the upper side of the tank body (100), and the upper end of the shaft rod (130) is slidably inserted in the first sleeve rod (170) ), a motor (180) for driving the first sleeve rod (170) is installed on the outer side of the first sleeve rod (170), and the output shaft of the motor (180) is drivingly connected to the first sleeve rod (170); a second sleeve rod (200) is rotatably inserted at the bottom of the tank body (100), and the lower end of the shaft rod (130) is slidably inserted into the inner side of the second sleeve rod (200); a rotating disk (201) is sleeved on the outer side of the second sleeve rod (200), and a limiting component (202) is arranged between the rotating disk (201) and the second sleeve rod (200), and the limiting component (202) includes an outer ring (2021) connected to the rotating disk (201), an inner ring (2022) connected to the second sleeve rod (200), and a plurality of inner rings (2023) connected to the second sleeve rod (200). ), a ratchet (2023) rotatably mounted on the side of the inner ring (2022), an elastic sheet (2024) mounted on the side of the inner ring (2022) and in contact with the ratchet (2023), and a tooth groove (2025) provided on the inner wall of the outer ring (2021) and used in conjunction with the ratchet (2023); a liquid cylinder (210) is installed at the bottom of the tank body (100); a first piston (211) is slidably arranged inside the liquid cylinder (210); a piston rod (212) is installed in the middle of the first piston (211); a track groove (213) used in conjunction with the piston rod (212) is provided on the upper side of the turntable (201); the track groove (213) is set as an annular groove, and the track groove (213) is set as an annular groove. The center of the groove (213) is close to one side of the liquid cylinder (210), and the end of the piston rod (212) is slidably inserted into the track groove (213). A first one-way valve (214) is inserted into the side of the liquid cylinder (210), and the end of the first one-way valve (214) is connected to a first liquid pipe (215). The first liquid pipe (215) is connected to an external water source, and the external water source enters the liquid cylinder (210) through the first liquid pipe (215) and the first one-way valve (214). A second one-way valve (216) is also inserted into the side of the liquid cylinder (210), and the end of the second one-way valve (216) is connected to a second liquid pipe (217). The end of the second liquid pipe (217) is inserted into the side of the tank body (100).The water in the liquid cylinder (210) enters the tank body (100) through the second one-way valve (216) and the second liquid pipe (217).

2. The bio-based ethylene glycol processing device according to claim 1, characterized in that: The limiting groove (160) is arranged in a V-shape, and the head and tail ends of the limiting groove (160) are connected.

3. The bio-based ethylene glycol processing device according to claim 1, characterized in that: A slider (171) is installed at the end of the shaft rod (130), and the number of the sliders (171) is set to be several. A groove body used in conjunction with the slider (171) is opened on the inner side of the first sleeve rod (170), and the slider (171) is slidably inserted in the groove body on the inner side of the first sleeve rod (170). A support frame (181) is installed on the outer side of the tank body (100), and the motor (180) is connected to the support frame (181) so that the motor (180) is fixed on the upper side of the tank body (100). A heater (190) is arranged on the inner side of the tank body (100).

4. The bio-based ethylene glycol processing device according to claim 3, characterized in that: A first gear (220) is sleeved on the outside of the first sleeve rod (170), a second gear (225) is arranged on the outside of the first gear (220), and the second gear (225) is intermittently meshed with the first gear (220).

5. The bio-based ethylene glycol processing device according to claim 4, characterized in that: A moving block (221) is slidably inserted into the inner side of the tank body (100), and a bolt (222) is threadedly connected to the side of the moving block (221). A threaded groove (223) used in conjunction with the bolt (222) is opened on the side of the tank body (100), and the number of the threaded grooves (223) is set to two. The bolt (222) is threadedly connected in the threaded groove (223) away from the first gear (220). A rotating shaft (224) is rotatably inserted into the side of the moving block (221), and a second gear (225) is installed at the end of the rotating shaft (224). At this time, the second gear (225) is away from the first gear (220) and is disengaged from the first gear (220).

6. The bio-based ethylene glycol processing device according to claim 4, characterized in that: A connecting rod (230) is installed on the outside of the tank body (100), and a cylinder (231) is installed on the end of the connecting rod (230). A second piston (232) is slidably arranged on the inside of the cylinder (231). A connecting rod (233) is rotatably connected between the second piston (232) and the second gear (225). The connecting rod (233) includes a first straight rod (2331) rotatably installed on the outside of the second gear (225), and a second straight rod (2332) rotatably installed in the middle of the second piston (232). The end of the first straight rod (2331) is rotatably connected to the end of the second straight rod (2332).

7. A bio-based ethylene glycol processing device according to claim 6, characterized in that: A third one-way valve (240) is plugged into the side of the cylinder (231), and the end of the third one-way valve (240) is connected to the first air pipe (241). The gas in the cylinder (231) is discharged through the third one-way valve (240) and the first air pipe (241). A fourth one-way valve (242) is also plugged into the side of the cylinder (231), and the end of the fourth one-way valve (242) is connected to the second air pipe (243). The end of the second air pipe (243) is plugged into the side of the tank body (100), and the gas in the tank body (100) enters the cylinder (231) through the second air pipe (243) and the fourth one-way valve (242).

8. A bio-based ethylene glycol processing method, using the bio-based ethylene glycol processing device according to claim 6, characterized in that: The specific steps include: S1. Crushing the straw: the screened straw is put into the tank body (100) through the feed hopper (110), and the motor (180) drives the crushing knife (140) to rotate in the tank body (100) through the shaft (130). At the same time, the limiting block (150) and the limiting groove (160) are used in coordination, so that the crushing knife (140) rotates and moves up and down, thereby crushing the straw in the tank body (100); S2. Saccharification of straw: water from the outside enters the liquid cylinder (210) through the first liquid pipe (215), and then enters the tank body (100) through the second liquid pipe (217), and soaks the crushed straw therein. At the same time, the straw and water are mixed evenly through the crushing knife (140), and the enzyme required for saccharification is added through the feed hopper (110), thereby saccharifying the straw; S3. Fermentation of straw: adding modified yeast required for fermentation into the tank body (100), sealing the tank body (100), and then exhausting the air in the tank body (100) through the cylinder (231) to form an anaerobic environment in the tank body (100), and controlling the temperature during the fermentation process through the heater (190), so that the straw fermentation produces ethylene glycol.

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