Reaction tank for preparing biodiesel through enzyme catalysis

Abstract

The invention relates to a reaction tank for preparing biodiesel through enzyme catalysis, and relates to the technical field of biodiesel preparation. Comprising a main tank body, a first feeding pipe communicated with the interior of the main tank body is arranged at the upper end of the main tank body, a plurality of second feeding pipes communicated with the interior of the main tank body are further arranged on the main tank body, a rotating cylinder is rotationally installed in the main tank body along the axis of the main tank body, and multiple sets of stirring blades are installed on the rotating cylinder at equal intervals along the axis of the rotating cylinder; and a sampling structure for extracting a sample in the main tank body is arranged on the rotary drum. A material supplementing structure for supplementing materials to the main tank body after the sampling structure extracts the samples is also arranged on the main tank body. According to the invention, the following problems in the biodiesel preparation process in the prior art can be solved: a plurality of material taking ports are formed in the rotary drum, so that the material taking ports in the rotary drum can cover different areas in the tank, extraction can be carried out on different positions, and the conversion rate of diesel oil in different areas can be detected. And secondly, a new reactant is added through the material supplementing structure, so that the internal volume of the main tank body is always kept consistent.

Description

Technical Field

[0001] The invention relates to the technical field of biodiesel preparation, in particular to a reaction tank for enzyme-catalyzed biodiesel preparation. Background Art

[0002] Biodiesel is primarily synthesized through a transesterification reaction, combining animal and vegetable oils with alcohols in the presence of a catalyst. Compared to traditional fossil diesel, biodiesel has a lower sulfur content, which reduces emissions of pollutants like sulfur dioxide during combustion, thus reducing atmospheric pollution. Furthermore, its high biodegradability effectively reduces the risk of soil and water pollution. Furthermore, biodiesel can be made from a wide range of raw materials, including various vegetable oils, animal fats, and waste cooking oil. This helps reduce dependence on non-renewable resources like petroleum and ensures a stable energy supply.

[0003] The existing enzyme-catalyzed biodiesel production reactor workflow generally includes the following main steps:

[0004] Add the mixed substrate and lipase to the reaction tank. Start the stirring device in the reaction tank to ensure that the substrate and enzyme are fully mixed and in contact. During the reaction, it is necessary to monitor the progress of the reaction. The progress of the reaction can be understood by regularly sampling and analyzing indicators such as the conversion rate of the reactants and the content of the products. When the reaction reaches the expected conversion rate, the crude biodiesel is post-processed, including water washing and drying, to remove residual alcohol, glycerol, enzymes, and other impurities, thereby improving the purity and quality of the biodiesel. The treated biodiesel can be discharged from the reaction tank through the discharge port for storage or further processing.

[0005] However, there are still some shortcomings in the actual sampling process in the existing technology:

[0006] During sampling, a dedicated sampling port is installed on the reaction vessel, connected to the vessel via a pipe with a valve. To sample, the valve is opened, and gravity or a pressure differential is used to draw the reaction solution into the sampler. The sampler typically has a precise scale, allowing for accurate control of the sample volume. This method is suitable for relatively stable reactions where a precise sampling volume is required.

[0007] However, reactant concentrations and enzyme distribution may vary at different locations within the reaction tank. If the sampling point is fixed at a certain location, it may not accurately represent the entire reaction system, leading to deviations in the analysis results.

[0008] During the biodiesel production process, sampling from the reactor is essential for monitoring reaction progress. However, existing technologies lack an automated refill system. As sampling increases, the continuous reduction in reactants gradually leads to an imbalance in the reactant ratio. Methanol and oil have significantly different densities, and this density difference naturally leads to stratification in the reactor. Furthermore, the liquid level in the reactor drops after each sampling, further amplifying the stratification effect.

[0009] As the liquid level drops, stratification intensifies, and the distribution of lipase and substrate in local areas becomes increasingly uneven, significantly reducing the actual contact area between the lipase and substrate. This not only severely impacts the rate of the enzyme-catalyzed reaction but can also lead to incomplete reactions, reducing biodiesel production and making it difficult to effectively guarantee product quality. This significantly limits the efficient and stable operation of the biodiesel production process.

[0010] Therefore, based on the above-stated viewpoint, it is of great significance to improve and perfect the existing technology, so that materials can be taken at different positions, the situation of the reaction system can be fully observed, and deviations in the analysis results can be prevented. An automatic feeding system can also be configured to adjust the amount of methanol / oil added according to the sampling volume to maintain a constant ratio of reactants. Summary of the Invention

[0011] In order to solve the above problems, the present invention provides a reaction tank for enzyme-catalyzed biodiesel preparation, including a main tank body, a first feed pipe connected to the interior of the main tank body is provided at the upper end of the main tank body, and a plurality of second feed pipes connected to the interior of the main tank body are also provided on the main tank body. A rotating drum is installed in the main tank body along its axis, and a plurality of groups of stirring blades are equidistantly installed on the rotating drum along its axis. The rotating drum is provided with a sampling structure for extracting samples from the interior of the main tank body.

[0012] The sampling structure includes a material taking port. A plurality of material taking ports are equidistantly provided on the rotating drum along its height direction. A telescopic screw passing through the rotating drum and installed on the main tank body is installed inside the rotating drum. A push plate is installed at one end of the telescopic screw located inside the rotating drum.

[0013] The main tank body is also provided with a feeding structure for feeding the main tank body after the sampling structure extracts the sample.

[0014] Preferably, a discharge pipe is provided at the bottom of the drum, which passes through the main tank body and is connected to the inside of the drum. A discharge plate is rotatably provided at the connection between the discharge pipe and the drum, and an extrusion rod that movably cooperates with the discharge plate is installed on the push plate.

[0015] Preferably, the sampling structure further comprises a plurality of control rings rotatably mounted inside the drum and corresponding one to one with the material taking openings, and corresponding holes corresponding to the material taking openings are provided on the control rings.

[0016] The diameters of the feeding port and the corresponding holes gradually decrease from top to bottom.

[0017] Preferably, a control member for driving the control ring to rotate is also provided inside the rotating drum. The control member includes a slide groove opened along the height direction of the rotating drum. A plurality of arc grooves are provided on the inner wall of the control ring. The number of arc grooves is the same as the number of control rings, and the arc grooves correspond to the slide grooves in movement.

[0018] A swivel is rotatably provided on the push plate, a telescopic block is provided on the swivel, the telescopic block is slidably provided in the slide groove, and is movably matched with the arc groove.

[0019] Preferably, the feeding structure includes a prefabricated tank, which is arranged at the upper end of the main tank body, and the bottom of the prefabricated tank is connected to the upper end of the main tank body. The upper end of the prefabricated tank is provided with a plurality of feeding pipes connected to the interior of the prefabricated tank, and the interior of the prefabricated tank is provided with a feeding part that drives the reactants in the feeding pipes into the interior of the prefabricated tank and from the prefabricated tank into the main tank body.

[0020] Preferably, the adding part includes a slide plate which is slidably arranged inside the prefabricated tank along the height direction of the prefabricated tank, a connecting shaft is slidably installed on the prefabricated tank, the connecting shaft passes through the prefabricated tank and is connected to the slide plate, a connecting block is installed at one end of the connecting shaft located inside the prefabricated tank, an annular groove is opened on the slide plate, and the connecting block is slidably arranged in the inner groove of the slide groove.

[0021] The slide plate is provided with a through hole corresponding to the connection point between the main tank body and the prefabricated tank.

[0022] Preferably, a spiral groove is provided on the inner wall of the prefabricated tank, and a control block sliding in the spiral groove is provided on the slide.

[0023] Preferably, a constant temperature plate is installed inside the slide plate.

[0024] Preferably, a driving screw is rotatably provided on the outer side of the prefabricated tank, a connecting rod is threadedly provided on the driving screw, and the connecting rod is connected to the connecting shaft.

[0025] The driving screw is connected to the driving shaft of the telescopic screw.

[0026] Preferably, a baffle is provided at the upper end of the main tank body, a feed port is provided on the baffle, a mounting plate is provided on the rotating drum, a stirring shaft is rotatably connected to the mounting plate, and a plurality of mixing blades are equidistantly provided on the stirring shaft along its axis.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The present invention provides multiple material taking ports on the rotating drum. By providing multiple material taking ports, the material taking ports on the rotating drum can cover different areas in the tank (such as the upper oil phase, the middle emulsified interface, and the bottom glycerin phase), and can extract from different positions to detect the conversion rate of diesel in different areas, thereby preventing deviations in the analysis results.

[0029] 2. The present invention provides a feeding structure on the main tank body. After the sampling structure samples the reactants inside the main tank body, new reactants are added through the feeding structure to ensure that the volume inside the main tank body always remains consistent. When it is detected that there is a lack of water, catalyst or alcohol substances inside the main tank body, new water, catalyst or alcohol substances can be added to maintain a constant ratio of reactants in the main tank body.

[0030] 3. The present invention installs a constant temperature plate inside the slide to perform preliminary temperature raising treatment on the added raw materials before discharging them into the main tank body, thereby preventing the temperature of the added raw materials from being lower than the temperature inside the main tank body and affecting the conversion effect of biodiesel in the main tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the accompanying drawings and examples.

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 It is a schematic structural diagram of the interior of the main tank body of the present invention.

[0034] Figure 3 It is a structural schematic diagram of the feed structure of the present invention.

[0035] Figure 4 It is a schematic structural diagram of the interior of the drum of the present invention.

[0036] Figure 5 It is a schematic diagram of the structure on the side wall of the rotating drum of the present invention.

[0037] Figure 6 It is a structural schematic diagram of the push plate of the present invention.

[0038] Figure 7 It is a structural diagram of the control loop of the present invention.

[0039] Figure 8 It is a schematic diagram of the structure inside the prefabricated tank of the present invention.

[0040] Figure 9 It is a schematic structural diagram of the barrier plate of the present invention.

[0041] In the figure, 1. main tank body; 10. first feed pipe; 11. second feed pipe; 12. rotating drum; 13. stirring blade; 2. sampling structure; 20. feeding port; 21. telescopic screw; 22. push plate; 23. control ring; 24. corresponding hole; 3. feeding structure; 30. prefabricated tank; 31. feeding pipe; 32. feeding part; 320. slide plate; 321. connecting shaft; 322. annular groove; 40. discharge pipe; 41. discharge plate; 42. extrusion rod; 5. control part; 50. slide groove; 51. arc groove; 52. rotating ring; 53. telescopic block; 60. spiral groove; 70. driving screw; 71. connecting rod; 80. barrier plate; 81. feed port; 82. mounting plate; 83. stirring shaft; 84. mixing blade. DETAILED DESCRIPTION

[0042] The following combination Figures 1-9 The embodiments of the present invention are described in detail.

[0043] The embodiments of the present application disclose a reaction tank for enzyme-catalyzed biodiesel preparation. The present invention is mainly used in the process of biodiesel preparation. In terms of technical effect, it can avoid the problem of only being able to take materials at the same position, which leads to deviations in analysis results; further, the present invention can also solve the problem of lack of a feeding system, and the liquid level in the reaction tank drops after each sampling, further amplifying the stratification effect.

[0044] Example 1:

[0045] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, it includes a main tank body 1, and a first feed pipe 10 communicating with the interior thereof is provided at the upper end of the main tank body 1. The pretreated crude oil enters the interior of the main tank body 1 through the first feed pipe 10. The main tank body 1 is also provided with a plurality of second feed pipes 11 communicating with the interior thereof. Water, catalysts, alcohol substances, etc. will enter the interior of the main tank body 1 through the second feed pipes 11 respectively. A rotating drum 12 is installed in the main tank body 1 along its axis, and a plurality of groups of stirring blades 13 are equidistantly installed on the rotating drum 12 along its axis. Through the rotation of the rotating drum 12, various reactants entering the interior of the main tank body 1 are mixed and stirred in the main tank body 1, and the mixing effect and the sufficiency of the reaction inside the main tank body 1 are improved by stirring.

[0046] The rotating drum 12 is provided with a sampling structure 2 for extracting samples from the inside of the main tank body 1. The mixed reactants in the main tank body 1 are extracted and tested through the sampling structure 2. The sampling structure 2 can not only perform sampling when the rotating drum 12 stops rotating, but also perform sampling when the rotating drum 12 is working, without stopping the machine for testing.

[0047] The sampling structure 2 includes a material taking port 20. A plurality of material taking ports 20 are equidistantly provided on the rotating drum 12 along its height direction. By providing a plurality of material taking ports 20, the material taking ports 20 on the rotating drum 12 can cover different areas in the tank (such as the upper oil phase, the middle emulsified interface, and the bottom glycerin phase), thereby being able to detect the conversion rate of diesel in different areas and prevent deviations in the analysis results.

[0048] A telescopic screw 21 is installed inside the rotating drum 12, which passes through the rotating drum 12 and is installed on the main tank body 1. The first section of the telescopic screw 21 is driven to rotate by an external motor, and the subsequent sections are extended or retracted in sequence through threaded engagement or nested transmission. A push plate 22 is installed at one end of the telescopic screw 21 located inside the rotating drum 12. The end of the telescopic screw 21 inside the rotating drum 12 slides inside the rotating drum 12 with the push plate 22. When the push plate 22 rises inside the rotating drum 12, the space in the area below the push plate 22 inside the rotating drum 12 increases, and the internal air pressure decreases. At this time, the air pressure inside the main tank body 1 is greater than the air pressure in the area below the push plate 22 in the rotating drum 12. The air pressure inside the main tank body 1 presses the reactants into the interior of the rotating drum 12 through the material taking port 20.

[0049] The main tank 1 is also equipped with a feeding structure 3 for replenishing the main tank 1 after the sampling structure 2 extracts a sample. After the sampling structure 2 samples the reactants inside the main tank 1, new reactants are added through the feeding structure 3 to ensure that the volume inside the main tank 1 remains consistent. Sensors (not shown) for detecting the absence of water, catalysts, or alcohols are installed inside the main tank (including but not limited to moisture sensors and online conductivity sensors). When a lack of water, catalysts, or alcohols in the main tank 1 is detected, new water, catalysts, or alcohols are added to maintain a constant ratio of reactants in the main tank 1.

[0050] Reference Figure 4 、 Figure 5 and Figure 6 As shown, it is a schematic diagram of the discharge structure for sampling and testing; specifically, a discharge pipe 40 is provided at the bottom of the rotating drum 12, which passes through the main tank body 1 and is connected to the interior of the rotating drum 12. A discharge plate 41 is rotatably provided at the connection between the discharge pipe 40 and the rotating drum 12, and an extrusion rod 42 that movably cooperates with the discharge plate 41 is installed on the push plate 22.

[0051] After the reactants enter the interior of the drum 12 from the feeding port 20, the feeding port 20 is closed. At this time, the push plate 22 descends under the action of the telescopic screw 21. At this time, the reactants fall on the discharge plate 41 at the connection between the bottom of the drum 12 and the discharge pipe 40. When the push plate 22 approaches the bottom of the drum 12, the extrusion rod 42 on the push plate 22 will gradually approach the discharge plate 41, and the extrusion rod 42 presses against the discharge plate 41 to cause the discharge plate 41 to rotate. At this time, the reactants inside the drum 12 will flow out from the gap between the discharge plate 41 and the inner wall of the discharge pipe 40, completing the material collection and facilitating subsequent testing.

[0052] Reference Figure 5 、 Figure 6 and Figure 7 As shown, it is a schematic diagram of the structure for blocking the material taking port 20; specifically, the sampling structure 2 also includes a plurality of control rings 23 rotatably mounted inside the drum 12 and corresponding to the material taking ports 20, and corresponding holes 24 corresponding to the material taking ports 20 are opened on the control rings 23.

[0053] By driving the control ring 23 to rotate, the corresponding hole 24 on the control ring 23 corresponds to the material taking port 20. At this time, the reactants inside the main tank body 1 enter the rotating drum 12 through the corresponding holes 24 and the material taking port 20. When the material taking port 20 needs to be blocked, the control ring 23 is driven to rotate again, and the outer wall of the control ring 23 blocks the material taking port 20.

[0054] By controlling the rotation of the control rings 23 at different heights, the material can be taken out from the material taking ports 20 at different heights. At the same time, only the corresponding hole 24 on a single control ring 23 corresponds to the material taking port 20, ensuring the material suction effect.

[0055] The diameters of the material taking port 20 and the corresponding hole 24 gradually decrease from top to bottom.

[0056] This is because the rising height of the push plate 22 is fixed, resulting in different feeding times of the feeding ports 20 at different heights. The feeding time at the upper port is shorter, so the feeding port 20 is set larger. The feeding time at the lower port is longer, so the feeding port 20 is set smaller. This ensures that the feeding amounts of different feeding ports 20 are the same within different feeding times, which is convenient for material testing. Samples taken at different heights can be compared to determine the reaction conditions inside the main tank body 1.

[0057] Reference Figure 6 and Figure 7 As shown, it is a structural diagram for adjusting the rotation angles of different control rings 23; specifically, a control member 5 for driving the control ring 23 to rotate is further provided inside the rotating drum 12, and the control member 5 includes a slide groove 50 opened along the height direction of the rotating drum 12, and a plurality of arc grooves 51 are provided on the inner wall of the control ring 23. The number of the arc grooves 51 is the same as the number of the control rings 23, and the arc grooves 51 correspond to the slide grooves 50 in a movable manner.

[0058] A swivel 52 is rotatably mounted on the push plate 22, and a telescopic block 53 is mounted on the swivel 52. The telescopic block 53 slides within the chute 50 and flexibly engages with the arcuate groove 51. When the push plate 22 descends, the swivel 52 on the push plate 22 simultaneously descends with the telescopic block 53. The telescopic block 53 slides within the chute 50. Since the swivel 52 is rotatably connected to the push plate 22, when the drum 12 rotates, the telescopic block 53 rotates synchronously with the swivel 52 in conjunction with the chute 50.

[0059] The telescopic block 53 slides within the chute 50 until it approaches the arcuate groove 51. The cooperation between the telescopic block 53 and the arcuate groove 51 allows the telescopic block 53 to descend, driving the control ring 23 to rotate, causing the corresponding hole 24 to align with or offset the material outlet 20. As the telescopic block 53 follows the upward movement of the rotating ring 52 on the push plate 22, it comes into contact with the bottom of the control ring 23, causing the control ring 23 to reverse and retract the telescopic block 53, without affecting the upward movement of the push plate 22.

[0060] Reference Figure 3 and Figure 8 As shown, that is, a schematic diagram of the mechanism for adding reactants into the main tank body 1; specifically, the feeding structure 3 includes a prefabricated tank 30, which is arranged at the upper end of the main tank body 1, and the bottom of the prefabricated tank 30 is connected to the upper end of the main tank body 1, and the upper end of the prefabricated tank 30 is provided with a plurality of feeding pipes 31 connected to the interior of the prefabricated tank 30, and the interior of the prefabricated tank 30 is provided with a feeding member 32 that drives the reactants in the feeding pipes 31 into the interior of the prefabricated tank 30 and into the main tank body 1 from the prefabricated tank 30.

[0061] The inside of the feeding pipe 31 is connected to the water, catalyst and alcohol storage areas respectively according to the production needs of biodiesel, and a one-way valve is installed at the connection between the feeding pipe 31 and the prefabricated tank 30. By controlling the switch of the one-way valve, according to actual needs, when the feeding part 32 is used to transport reactants and other catalysts and other substances into the main tank body 1, the corresponding feeding pipe 31 is opened.

[0062] Reference Figure 3 、 Figure 8 and Figure 9 As shown, it is a structural diagram of mixing the raw materials that are about to enter the prefabricated tank 30; specifically, the feeding member 32 includes a slide plate 320 that is slidably arranged inside the prefabricated tank 30 along the height direction of the prefabricated tank 30, and a connecting shaft 321 is slidably installed on the prefabricated tank 30. The connecting shaft 321 passes through the prefabricated tank 30 and is connected to the slide plate 320. A connecting block is installed at one end of the connecting shaft 321 located in the prefabricated tank 30, and an annular groove 322 is opened on the slide plate 320, and the connecting block is slidably arranged in the slide groove 50.

[0063] The slide plate 320 is provided with a through hole corresponding to the connection point between the main tank body 1 and the prefabricated tank 30, and a one-way valve is installed at the through hole.

[0064] The connecting shaft 321 can move up and down with the slide 320 inside the prefabricated tank 30. When the slide 320 descends, the space above the slide 320 inside the prefabricated tank 30 increases, and the pressure decreases. At this time, the slide 320 descends and can suck the raw materials in the feeding pipe 31 into the prefabricated tank 30. Then the slide 320 rises. At this time, the one-way valve at the connection between the feeding pipe 31 and the prefabricated tank 30 is closed, and the slide 320 rises to squeeze the raw materials. When the area above the slide 320 can no longer accommodate the raw materials, the raw materials will flow out from the through holes on the slide 320.

[0065] When the slide plate 320 descends, the one-way valve at the through hole prevents the spaces above and below the slide plate 320 from being connected.

[0066] Reference Figure 3 and Figure 8 The figure shows a schematic diagram of the structure for controlling the rotation of the slide 320. Specifically, a spiral groove 60 is formed on the inner wall of the precast tank 30, and a control block (not shown) is provided on the slide 320 to slide within the spiral groove 60. When the slide 320 is raised or lowered, the control block cooperates with the spiral groove 60 to drive the slide 320 to rotate. This causes the raw materials entering the precast tank 30 to rotate to a certain extent due to the rotation of the slide 320, thereby achieving a certain mixing effect.

[0067] A constant temperature plate (not shown in the figure) is installed inside the slide 320. Since the reaction process of biodiesel needs to be carried out at a temperature of 30-60 degrees to ensure the completeness of the reaction, and the temperature inside the prefabricated tank 30 is different from the temperature inside the main tank body 1, if the added raw materials are directly discharged into the main tank body 1, it will affect the reaction effect of the biodiesel in the main tank body 1. Therefore, a constant temperature plate is set to perform a preliminary heating treatment on the added raw materials before discharging them into the main tank body 1 to prevent the temperature of the added raw materials from being lower than the temperature inside the main tank body 1 and affecting the reaction effect of the biodiesel in the main tank body 1.

[0068] Reference Figure 8 As shown, it is a schematic diagram of the structure for controlling the lifting and lowering of the connecting shaft 321; specifically, a driving screw 70 is rotatably provided on the outer side of the prefabricated tank 30, and a connecting rod 71 is threadedly provided on the driving screw 70, and the connecting rod 71 is connected to the connecting shaft 321; by rotating the driving screw 70, the connecting rod 71 is lifted and lowered, and then the connecting shaft 321 is lifted and lowered.

[0069] The drive screw 70 is connected to the drive shaft of the telescopic screw 21. The drive screw 70 and the telescopic screw 21 operate synchronously. When the push plate 22 on the telescopic screw 21 operates, the drive screw 70 can drive the slide plate 320 to operate synchronously. The sample extracted from the drum 12 is the same as the raw material extracted by the push plate 22, ensuring that the added sample and the extracted sample are the same in number.

[0070] Reference Figure 2 The diagram shows a mechanism for further mixing the added raw materials. Specifically, a baffle plate 80 is provided at the upper end of the main tank body 1. A feed port 81 is formed through the baffle plate 80. Raw materials within the prefabricated tank 30 fall onto the baffle plate 80 and then through the feed port 81 to the area below the baffle plate 80. The upper surface of the baffle plate 80 is tilted toward the feed port 81, facilitating discharge of the raw materials. A mounting plate 82 is provided on the rotating drum 12. A stirring shaft 83 is rotatably connected to the mounting plate 82. Multiple mixing blades 84 are equidistantly arranged along the axis of the stirring shaft 83.

[0071] When the drum 12 rotates, it will rotate synchronously with the mounting plate 82. At this time, the raw materials entering the main tank body 1 from the prefabricated tank 30 will fall onto the blocking plate 80. When the mounting plate 82 rotates, the mixing blades 84 on the stirring shaft 83 on the mounting plate 82 will stir and mix the incoming raw materials.

[0072] A stirring gear is installed at one end of the stirring shaft 83, and a stirring gear ring meshing with the stirring gear is provided on the top wall of the main tank body 1. When the stirring shaft 83 rotates along the axis of the rotating drum 12 of the mounting plate 82, the stirring gear ring will drive the stirring shaft 83 to rotate in the reverse direction.

[0073] Example 2:

[0074] On the basis of Example 1, in order to further improve the mixing of the supplementary mixture added on the baffle plate 80 and ensure that the mixture can be evenly added to the main tank body 1 when added; a matching part is also proposed to control the rotation of the baffle plate 80, which is beneficial for the feed port 81 on the baffle plate 80 to rotate during feeding, so that the newly added mixture can be gradually added into the main tank body 1.

[0075] Reference Figure 2 and Figure 9 As shown, it is a schematic diagram of the structure for controlling the rotation of the baffle plate 80; specifically, the baffle plate 80 is rotatably arranged inside the main tank body 1, and the baffle plate 80 is connected to the rotating drum 12 through a gear ring transmission assembly.

[0076] As the drum 12 rotates, the baffle plate 80 rotates synchronously with the gear ring drive assembly in the opposite direction. This arrangement is designed to ensure that after the raw materials fall onto the baffle plate 80, they are gradually discharged by rotation, ensuring full contact between the raw materials and reducing the risk of incomplete local reactions.

[0077] During operation: In the first step, the pre-treated crude oil enters the main tank body 1 through the feed pipe, and water, catalyst, alcohol substances, etc. enter the main tank body 1 through the second feed pipe 11 respectively.

[0078] Step 2: The drum 12 rotates to mix and stir the various reactants entering the main tank body 1 in the main tank body 1, thereby improving the mixing effect and the sufficiency of the reaction inside the main tank body 1.

[0079] Step 3: When sampling the reactants inside the main tank body 1, the reactants enter the inside of the rotating drum 12 through the material taking port 20 on the rotating drum 12, and the material taking port 20 is closed. At this time, the push plate 22 in the rotating drum 12 descends under the action of the telescopic screw 21, and the reactants will fall on the discharge plate 41 at the connection between the bottom of the rotating drum 12 and the discharge pipe 40. When the push plate 22 approaches the bottom of the push plate 22, the squeezing rod 42 on the push plate 22 will gradually approach the discharge plate 41, and the squeezing rod 42 presses against the discharge plate 41 to cause the discharge plate 41 to rotate. Then the reactants inside the rotating drum 12 will flow out from the gap between the discharge plate 41 and the inner wall of the discharge pipe 40, and the material collection is completed.

[0080] Step 4: At the same time, the connecting shaft 321 moves up and down with the slide 320 inside the prefabricated tank 30. When the slide 320 descends, the space above the slide 320 inside the prefabricated tank 30 increases, and the pressure decreases. At this time, the slide 320 descends and can suck the raw materials in the feeding tube 31 into the prefabricated tube. Then the slide 320 rises. At this time, the one-way valve at the connection between the feeding tube 31 and the prefabricated tank 30 is closed, and the slide 320 rises to squeeze the raw materials. When the area above the slide 320 can no longer accommodate the raw materials, the raw materials will flow out from the through holes on the slide 320.

[0081] Step 5: When the drum 12 rotates, it will rotate synchronously with the mounting plate 82. At this time, the raw materials entering the main tank body 1 from the prefabricated tank 30 will fall onto the baffle plate 80. When the mounting plate 82 rotates, the mixing blades 84 on the stirring shaft 83 on the mounting plate 82 will stir and mix the incoming raw materials, and the mixed additives will fall below the baffle plate 80 through the feed port 81.

[0082] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive.

[0083] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A reaction tank for enzyme-catalyzed biodiesel production, comprising a main tank body (1), characterized in that: A first feed pipe (10) communicating with the interior of the main tank body (1) is provided at the upper end thereof, and a plurality of second feed pipes (11) communicating with the interior thereof are also provided on the main tank body (1). A rotating drum (12) is rotatably mounted in the main tank body (1) along its axis, and a plurality of groups of stirring blades (13) are equidistantly mounted on the rotating drum (12) along its axis. A sampling structure (2) for extracting samples from the interior of the main tank body (1) is provided on the rotating drum (12); The sampling structure (2) includes a material taking port (20). The rotating drum (12) is provided with a plurality of material taking ports (20) equidistantly spaced along its height direction. A telescopic screw (21) passing through the rotating drum (12) and mounted on the main tank body (1) is installed inside the rotating drum (12). A push plate (22) is installed at one end of the telescopic screw (21) located inside the rotating drum (12). The main tank body (1) is also provided with a feeding structure (3) for feeding the main tank body (1) after the sampling structure (2) extracts the sample.

2. The reaction tank for preparing enzyme-catalyzed biodiesel according to claim 1, characterized in that: A discharge pipe (40) is provided at the bottom of the rotating drum (12), which passes through the main tank body (1) and is in communication with the interior of the rotating drum (12). A discharge plate (41) is rotatably provided at the connection between the discharge pipe (40) and the rotating drum (12), and an extrusion rod (42) movably matched with the discharge plate (41) is installed on the push plate (22).

3. The reaction tank for preparing enzyme-catalyzed biodiesel according to claim 1, characterized in that: The sampling structure (2) further comprises a plurality of control rings (23) rotatably mounted inside the rotating drum (12) and corresponding one to one with the material taking openings (20), and corresponding holes (24) corresponding to the material taking openings (20) are formed on the control rings (23); The diameters of the material taking port (20) and the corresponding hole (24) gradually decrease from top to bottom.

4. The reaction tank for preparing enzyme-catalyzed biodiesel according to claim 1, characterized in that: A control member (5) for driving the control ring (23) to rotate is further provided inside the rotating drum (12). The control member (5) includes a chute (50) provided along the height direction of the rotating drum (12). A plurality of arcuate grooves (51) are provided on the inner wall of the control ring (23). The number of the arcuate grooves (51) is the same as the number of the control ring (23), and the arcuate grooves (51) and the chute (50) are movably corresponding. A rotating ring (52) is rotatably provided on the push plate (22), a telescopic block (53) is provided on the rotating ring (52), and the telescopic block (53) is slidably provided in the slide groove (50) and movably matched with the arc groove (51).

5. The reaction tank for preparing enzyme-catalyzed biodiesel according to claim 1, characterized in that: The feeding structure (3) comprises a prefabricated tank (30), the prefabricated tank (30) being arranged at the upper end of the main tank body (1), the bottom of the prefabricated tank (30) being in communication with the upper end of the main tank body (1), the upper end of the prefabricated tank (30) being provided with a plurality of feeding pipes (31) in communication with the interior of the prefabricated tank (30), and the interior of the prefabricated tank (30) being provided with a feeding member (32) for driving the reactants in the feeding pipes (31) into the interior of the prefabricated tank (30) and then into the main tank body (1) from the prefabricated tank (30).

6. The reaction tank for preparing enzyme-catalyzed biodiesel according to claim 5, characterized in that: The feeding member (32) includes a slide plate (320) which is slidably arranged inside the prefabricated tank (30) along the height direction of the prefabricated tank (30); a connecting shaft (321) is slidably installed on the prefabricated tank (30); the connecting shaft (321) passes through the prefabricated tank (30) and is connected to the slide plate (320); a connecting block is installed at one end of the connecting shaft (321) located inside the prefabricated tank (30); an annular groove (322) is opened on the slide plate (320); and the connecting block is slidably arranged in the inner groove of the slide groove (50); The slide plate (320) is provided with a through hole corresponding to the connection point between the main tank body (1) and the prefabricated tank (30).

7. The reaction tank for preparing enzyme-catalyzed biodiesel according to claim 6, characterized in that: A spiral groove (60) is provided on the inner wall of the prefabricated tank (30), and a control block sliding in the spiral groove (60) is provided on the slide plate (320).

8. The reaction tank for preparing enzyme-catalyzed biodiesel according to claim 6, characterized in that: A constant temperature plate is installed inside the slide plate (320).

9. The reaction tank for preparing enzyme-catalyzed biodiesel according to claim 5, characterized in that: A driving screw (70) is rotatably provided on the outer side of the prefabricated tank (30), a connecting rod (71) is threadedly provided on the driving screw (70), and the connecting rod (71) is connected to the connecting shaft (321); The driving screw (70) is connected to the driving shaft of the telescopic screw (21).

10. The reaction tank for preparing enzyme-catalyzed biodiesel according to claim 1, characterized in that: A baffle plate (80) is provided at the upper end of the main tank body (1), and a feed port (81) is provided on the baffle plate (80) and passes through the baffle plate. A mounting plate (82) is provided on the rotating drum (12), and a stirring shaft (83) is rotatably connected to the mounting plate (82). The stirring shaft (83) is provided with a plurality of mixing blades (84) equidistantly along its axis.

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