Biodiesel distillation condensation recovery device

Abstract

The utility model discloses a biodiesel distillation condensation recovery device, concretely relates to biodiesel recovery field, including installation base, and the installation base is fixedly connected with distillation shell, and the distillation shell is opened with liquid inlet and liquid outlet, and the top of distillation shell is fixedly connected with the top cover, and the bottom of distillation shell is fixedly connected with the bottom cover, and the installation base is installed with rotating assembly, and the output of rotating assembly is connected with centrifugal impeller, and centrifugal impeller rotatory connection is in the bottom cover, and rotating assembly is used for driving centrifugal impeller rotation, and the inside fixed connection of distillation shell has a plurality of heating rod that circles distributes. The utility model discloses through rotating assembly drive centrifugal impeller high -speed rotation in the inside of distillation shell, makes the static liquid pool that originally gathered in the bottom of container change for the flowing liquid membrane of large -area spread, cooperates the multiple heating rod of circle even distribution, has realized the sufficient contact and quick heat exchange between material and heat source, has guaranteed product purity and quality, and has realized the optimization of energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of biodiesel recycling technology, and more specifically, to a biodiesel distillation, condensation, and recycling device. Background Technology

[0002] The biodiesel distillation condensation recovery unit is a key piece of equipment used in the biodiesel production process. It is mainly used to recover and purify volatile substances such as methanol produced in the reaction. Through condensation technology, methanol vapor is separated from the reaction system, purified, and then put back into production, thereby realizing the recycling of raw materials, reducing production costs, and reducing environmental pollution.

[0003] Traditional biodiesel distillation and condensation recovery units often use statically arranged heating elements, which cannot adequately heat and distill high-viscosity biodiesel feedstocks. This results in extremely uneven heating of the material during distillation, with some areas becoming excessively hot due to heat accumulation, while other areas may not reach the ideal evaporation temperature. The overheated local environment can cause unnecessary thermal decomposition or polymerization reactions of biodiesel molecules, leading not only to a decrease in the yield of the target product but also to a darker color and deterioration in quality. Furthermore, continuous local overheating can catalyze the formation of hard carbonized coke on the surface of the heating elements. These stubborn coke layers act like a heat-insulating coating on the heating surface, severely hindering the effective transfer of heat and forcing the equipment to consume more energy to maintain the distillation temperature, resulting in a significant increase in energy consumption.

[0004] In summary, to improve the efficiency of biodiesel distillation, it is necessary to address the problems of uneven heating of materials, low mass and heat transfer efficiency, local overheating, and significant increase in energy consumption caused by the use of static heating or simple stirring in traditional equipment. The goal is to enable full contact and rapid heat exchange between biodiesel and the heat source. Utility Model Content

[0005] The biodiesel distillation condensation recovery device provided by this utility model aims to solve the following problems: traditional devices mostly use static heating or simple stirring methods, resulting in uneven heating of materials, low mass and heat transfer efficiency, easy local overheating, and a significant increase in energy consumption.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a biodiesel distillation condensation recovery device, including a mounting base, a distillation shell fixedly connected to the mounting base, an inlet and an outlet on the distillation shell, a top cover fixedly connected to the top of the distillation shell, a bottom cover fixedly connected to the bottom of the distillation shell, a rotating assembly mounted on the mounting base, a centrifugal impeller connected to the output end of the rotating assembly, the centrifugal impeller being rotatably connected to the bottom cover, the rotating assembly being used to drive the centrifugal impeller to rotate, and a plurality of heating rods arranged in a circular pattern fixedly connected inside the distillation shell.

[0007] In a preferred embodiment, an upper fixing ring and a lower fixing ring are fixedly connected inside the distillation shell. The upper fixing ring has a plurality of circumferentially distributed spherical protrusions, and the lower fixing ring has a plurality of circumferentially distributed sliding grooves. A sealing slide is slidably connected in the sliding groove, and a compression spring is fixedly connected between the sealing slide and the sliding groove. The heating rod is movably connected between the spherical protrusions and the sealing slide.

[0008] In a preferred embodiment, the rotating assembly includes a stepper motor fixedly connected to the mounting base, a first synchronous pulley fixedly connected to the output end of the stepper motor via a shaft, a belt with one end sleeved on the first synchronous pulley, and a second synchronous pulley sleeved on the other end of the belt. The second synchronous pulley is fixedly connected to the centrifugal impeller, and the stepper motor is used to drive the first synchronous pulley to rotate.

[0009] In a preferred embodiment, a cleaning component is installed on the distillation shell, and the output end of the cleaning component is connected to a multi-layer cleaning sleeve. The multi-layer cleaning sleeve and the heating rod are slidably connected, and the cleaning component is used to drive the multi-layer cleaning sleeve to move along the heating rod.

[0010] In a preferred embodiment, the cleaning assembly includes a limiting guide rail fixedly connected to the distillation shell, an electric push rod fixedly connected to the limiting guide rail, and a connecting rod fixedly connected to the output end of the electric push rod. The connecting rod is fixedly connected to the multi-layer cleaning sleeve, and the connecting rod is slidably connected to the limiting guide rail. The electric push rod is used to drive the connecting rod to move along the limiting guide rail.

[0011] In a preferred embodiment, a reaction liquid tank is fixedly connected to the mounting base, and a liquid delivery pipe is fixedly connected between the reaction liquid tank and the distillation shell.

[0012] In a preferred embodiment, a control valve is fixedly connected to the infusion pipeline, and the control valve controls the flow rate of the liquid in the infusion pipeline through an external PLC control system.

[0013] In a preferred embodiment, a condenser is fixedly connected to the reaction tank, an evaporation pipe is fixedly connected between the condenser and the distillation shell, and a reflux pipe is fixedly connected between the condenser and the reaction tank.

[0014] The beneficial effects of this utility model are as follows: 1. This utility model uses a stepper motor to drive the centrifugal impeller to rotate at high speed inside the distillation shell through a stable transmission via a synchronous pulley and belt. This transforms the static liquid pool that was originally gathered at the bottom of the container into a large-area flowing liquid film, thereby increasing the evaporation surface area by several orders of magnitude. Combined with multiple heating rods evenly distributed around the circumference, it achieves full contact and rapid heat exchange between the material and the heat source, avoiding the decomposition, polymerization, or coking of biodiesel caused by local overheating. Thus, while comprehensively improving evaporation efficiency, it ensures product purity and quality and optimizes energy consumption.

[0015] 2. This utility model uses a cleaning component to drive a multi-layer cleaning sleeve to make a stable up-and-down reciprocating motion along the surface of the heating rod, scraping away the coking and polymers attached to the surface of the heating rod, and timely and effectively removing the scale that affects the heat transfer efficiency, so that the surface of the heating rod is kept clean. This ensures that the heating system is always in the optimal heat transfer condition, effectively maintaining the stability of the distillation efficiency and avoiding the problem of continuous increase in energy consumption caused by coking accumulation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0017] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the distillation shell structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the centrifugal impeller structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the multi-layer cleaning sleeve structure of this utility model.

[0021] Figure 6 This is a schematic diagram of the condenser structure of this utility model.

[0022] Figure 7 This is a schematic diagram of another embodiment of the heating rod of this utility model.

[0023] The attached diagram is labeled as follows: 1. Mounting base; 2. Distillation shell; 201. Liquid inlet; 202. Liquid outlet; 3. Top cover; 4. Bottom cover; 501. Stepper motor; 502. First synchronous pulley; 503. Belt; 504. Second synchronous pulley; 6. Centrifugal impeller; 7. Heating rod; 8. Reaction tank; 9. Liquid delivery pipeline; 10. Control valve; 11. Condenser; 12. Evaporation pipeline; 13. Reflux pipeline; 1401. Limiting guide rail; 1402. Electric push rod; 1403. Connecting rod; 15. Multi-layer cleaning sleeve; 16. Upper fixing ring; 1601. Spherical protrusion; 17. Lower fixing ring; 1701. Slide groove; 18. Compression spring; 19. Sealing slide. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] Refer to the instruction manual appendix Figures 1 to 7 A biodiesel distillation condensation and recovery device includes a mounting base 1, a distillation shell 2 fixedly connected to the mounting base 1, an inlet 201 and an outlet 202 on the distillation shell 2, a top cover 3 fixedly connected to the top of the distillation shell 2, a bottom cover 4 fixedly connected to the bottom of the distillation shell 2, a rotating assembly mounted on the mounting base 1, a centrifugal impeller 6 connected to the output end of the rotating assembly, the centrifugal impeller 6 being rotatably connected to the bottom cover 4, the rotating assembly being used to drive the centrifugal impeller 6 to rotate, and several heating rods 7 arranged in a circular pattern fixedly connected inside the distillation shell 2.

[0026] It should be noted that the liquid inlet 201 is located at the upper part of the distillation shell 2 and is used to inject the crude biodiesel feedstock to be distilled. The liquid outlet 202 is located at the bottom of the distillation shell 2 and is used to discharge the distilled material. The bottom cover 4 provides a structure for mounting bearings to support the rotation of the centrifugal impeller 6. The centrifugal impeller 6 is driven to rotate by the rotating assembly. Under the action of centrifugal force, the liquid is agitated and the liquid is thrown into a thin liquid film on the inner wall of the distillation shell, which greatly increases the evaporation surface area and thus improves the distillation efficiency. At the same time, the centrifugal force is used to assist in gas-liquid separation, so that the generated steam can rise more quickly and smoothly from the central area and be discharged through the steam outlet.

[0027] Another embodiment based on the centrifugal impeller 6: A series of small holes can be opened on the blades of the centrifugal impeller 6. When the liquid passes through these small holes, tiny eddies and jets are generated, which greatly enhances the mixing inside the liquid layer, making the temperature and composition more uniform. The increased disturbance can destroy the initial bubbles and polymer film formed on the heated surface, effectively preventing the material from coking on the blades and walls.

[0028] Refer to the instruction manual appendix Figure 7 An upper fixing ring 16 and a lower fixing ring 17 are fixedly connected inside the distillation shell 2. The upper fixing ring 16 is provided with a number of spherical protrusions 1601 distributed in a circle. The lower fixing ring 17 is provided with a number of spherical sliding grooves 1701 distributed in a circle. A sealing slide plate 19 is slidably connected in the sliding groove 1701. A compression spring 18 is fixedly connected between the sealing slide plate 19 and the sliding groove 1701. The heating rod 7 is movably connected between the spherical protrusions 1601 and the sealing slide plate 19.

[0029] It should be noted that the above is an optimized structure for the heating rod 7. The upper fixing ring 16, lower fixing ring 17, compression spring 18, and sealing slide 19 are novel structures. The fixed connection between the heating rod 7 and the distillation shell 2 is improved to a detachable connection. When installing the heating rod 7, align the flat bottom end of the heating rod 7 with the sealing slide 19 in the slide groove 1701, apply downward pressure to compress the compression spring 18 to its lower limit position, and then insert the end of the heating rod 7 with the spherical groove into the spherical protrusion 1601. Release the heating rod 7, and the compression spring 18 will push upward, firmly fixing the heating rod 7 between the upper fixing ring 16 and the lower fixing ring 17, thus completing the quick installation of the heating rod 7. Then, power can be supplied to the upper fixing ring 16 and the lower fixing ring 17. When disassembling, simply press the heating rod 7 downward to remove it, which facilitates the quick disassembly and replacement of the heating rod 7 separately and saves maintenance costs.

[0030] Refer to the instruction manual appendix Figure 4 The rotating assembly includes a stepper motor 501 fixedly connected to the mounting base 1, a first synchronous pulley 502 fixedly connected to the output end of the stepper motor 501 via a shaft, a belt 503 with one end sleeved on the first synchronous pulley 502, and a second synchronous pulley 504 sleeved on the other end of the belt 503. The second synchronous pulley 504 is fixedly connected to the centrifugal impeller 6. The stepper motor 501 is used to drive the first synchronous pulley 502 to rotate.

[0031] It should be noted that the stepper motor 501 is mounted on the mounting base 1 and drives the centrifugal impeller 6 to rotate through the first synchronous pulley 502, the second synchronous pulley 504 and the belt 503. There is a sufficiently large friction between the first synchronous pulley 502, the second synchronous pulley 504 and the belt 503 to achieve stable power transmission.

[0032] Refer to the instruction manual appendix Figure 5 A cleaning component is installed on the distillation shell 2. The output end of the cleaning component is connected to a multi-layer cleaning sleeve 15. The multi-layer cleaning sleeve 15 and the heating rod 7 are slidably connected. The cleaning component is used to drive the multi-layer cleaning sleeve 15 to move along the heating rod 7.

[0033] It should be noted that the multi-layer cleaning sleeve 15 is a sleeve assembly consisting of three independent scraping rings connected in series along the axial direction. The inner diameter of each ring matches the outer diameter of the heating rod 7 and leaves a small gap, allowing it to slide up and down along the heating rod 7 to mechanically scrape or brush off coke, polymers, carbon deposits and other impurities that are firmly attached to the surface of the heating rod 7.

[0034] Refer to the instruction manual appendix Figure 5 The cleaning assembly includes a limiting guide rail 1401 fixedly connected to the distillation shell 2, an electric push rod 1402 fixedly connected to the limiting guide rail 1401, and a connecting rod 1403 fixedly connected to the output end of the electric push rod 1402. The connecting rod 1403 is fixedly connected to the multi-layer cleaning sleeve 15, and the connecting rod 1403 is slidably connected to the limiting guide rail 1401. The electric push rod 1402 is used to drive the connecting rod 1403 to move along the limiting guide rail 1401.

[0035] It should be noted that the limiting guide rail 1401 ensures that the connecting rod 1403 (and the multi-layer cleaning sleeve 15 connected thereto) moves strictly in a vertical straight line, preventing any form of deflection, shaking or jamming. When the multi-layer cleaning sleeve 15 rubs unevenly with the heating rod 7, lateral forces will be generated. The limiting guide rail 1401 can effectively bear and offset these forces, transfer the load to the distillation shell 2, and protect the electric push rod 1402 from damage by non-axial forces.

[0036] Refer to the instruction manual appendix Figure 2 and Figure 6 A reaction liquid tank 8 is fixedly connected to the mounting base 1, and a liquid delivery pipe 9 is fixedly connected between the reaction liquid tank 8 and the distillation shell 2.

[0037] It should be noted that the reaction tank 8 is used to store the catalyst required for the reaction. It is equipped with a level gauge to observe and control the liquid level in the tank and to replenish it in a timely manner. The reaction tank 8, the liquid delivery pipe 9 and the distillation shell 2 are connected.

[0038] Refer to the instruction manual appendix Figure 6 A control valve 10 is fixedly connected to the infusion pipeline 9. The control valve 10 controls the flow rate of the liquid in the infusion pipeline 9 through an external PLC control system.

[0039] It should be noted that the control valve 10, through an external PLC control system, precisely controls the flow rate of the catalyst from the reaction tank 8 into the distillation shell 2, ensuring that the catalyst concentration in the reaction area is maintained at an optimal and stable level.

[0040] Refer to the instruction manual appendix Figure 2 and Figure 6A condenser 11 is fixedly connected to the reaction tank 8. An evaporation pipe 12 is fixedly connected between the condenser 11 and the distillation shell 2. A reflux pipe 13 is fixedly connected between the condenser 11 and the reaction tank 8.

[0041] It should be noted that the distillation shell 2, evaporation pipe 12, condenser 11, reflux pipe 13 and reaction liquid tank 8 are connected in sequence. The condenser 11 condenses the water vapor and methanol and other substances carrying the catalyst components in the evaporation shell 2 into liquid, and then transports the condensed catalyst to the reaction liquid tank 8 through the reflux pipe 13 to realize the recycling of the catalyst and significantly reduce the consumption of the catalyst.

[0042] Working principle: The crude biodiesel feedstock to be distilled is injected into the distillation shell 2 through the inlet 201. The catalyst required for the reaction is stored in the reaction tank 8 and transported to the distillation shell 2 through the delivery pipe 9. The flow rate is precisely regulated by the control valve 10 under the control of the PLC system. At the same time, the stepper motor 501 on the mounting base 1 is started, driving the centrifugal impeller 6 to rotate at high speed on the bottom cover 4 through the first synchronous pulley 502, belt 503 and second synchronous pulley 504. Under the action of strong centrifugal force, the liquid is thrown against the shell wall. At this time, the heating rods evenly distributed around the circumference inside the shell... 7. The liquid film is heated efficiently, causing the light components in the crude biodiesel to evaporate rapidly. The vapor rises and is discharged from the evaporation pipe 12 of the top cover 3, entering the condenser 11. After the vapor is condensed into liquid in the condenser 11, it returns to the reaction liquid tank 8 through the return pipe 13, thus completing the recovery and reuse of the catalyst. In order to maintain the long-term efficient operation of the device, the built-in cleaning component will be activated periodically. Under the precise guidance of the limit guide rail 1401, the electric push rod 1402 drives the connecting rod 1403 to move the multi-layer cleaning sleeve 15 up and down along the heating rod 7 to scrape off the coke and dirt on its surface.

[0043] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A biodiesel distillation, condensation, and recovery device, characterized in that: The device includes a mounting base (1), on which a distillation shell (2) is fixedly connected. The distillation shell (2) has an inlet (201) and an outlet (202). A top cover (3) is fixedly connected to the top of the distillation shell (2), and a bottom cover (4) is fixedly connected to the bottom of the distillation shell (2). A rotating assembly is mounted on the mounting base (1). A centrifugal impeller (6) is connected to the output end of the rotating assembly. The centrifugal impeller (6) is rotatably connected to the bottom cover (4). The rotating assembly is used to drive the centrifugal impeller (6) to rotate. Several heating rods (7) arranged in a circular pattern are fixedly connected inside the distillation shell (2).

2. The biodiesel distillation, condensation, and recovery device according to claim 1, characterized in that: An upper fixing ring (16) and a lower fixing ring (17) are fixedly connected inside the distillation shell (2). The upper fixing ring (16) has several spherical protrusions (1601) distributed in a circle. The lower fixing ring (17) has several spherical grooves (1701) distributed in a circle. A sealing slide (19) is slidably connected inside the groove (1701). A compression spring (18) is fixedly connected between the sealing slide (19) and the groove (1701). The heating rod (7) is movably connected between the spherical protrusions (1601) and the sealing slide (19).

3. The biodiesel distillation, condensation, and recovery device according to claim 1, characterized in that: The rotating assembly includes a stepper motor (501) fixedly connected to the mounting base (1), a first synchronous pulley (502) fixedly connected to the output end of the stepper motor (501) via a shaft, a belt (503) with one end sleeved on the first synchronous pulley (502) and a second synchronous pulley (504) sleeved on the other end of the belt (503). The second synchronous pulley (504) is fixedly connected to the centrifugal impeller (6), and the stepper motor (501) is used to drive the first synchronous pulley (502) to rotate.

4. The biodiesel distillation, condensation, and recovery device according to claim 1, characterized in that: A cleaning component is installed on the distillation shell (2). The output end of the cleaning component is connected to a multi-layer cleaning sleeve (15). The multi-layer cleaning sleeve (15) and the heating rod (7) are slidably connected. The cleaning component is used to drive the multi-layer cleaning sleeve (15) to move along the heating rod (7).

5. The biodiesel distillation, condensation, and recovery device according to claim 4, characterized in that: The cleaning assembly includes a limiting guide rail (1401) fixedly connected to the distillation shell (2), an electric push rod (1402) fixedly connected to the limiting guide rail (1401), and a connecting rod (1403) fixedly connected to the output end of the electric push rod (1402). The connecting rod (1403) is fixedly connected to the multi-layer cleaning sleeve (15), and the connecting rod (1403) is slidably connected to the limiting guide rail (1401). The electric push rod (1402) is used to drive the connecting rod (1403) to move along the limiting guide rail (1401).

6. The biodiesel distillation, condensation, and recovery apparatus according to claim 1, characterized in that: A reaction liquid tank (8) is fixedly connected to the mounting base (1), and a liquid delivery pipe (9) is fixedly connected between the reaction liquid tank (8) and the distillation shell (2).

7. The biodiesel distillation, condensation, and recovery apparatus according to claim 6, characterized in that: A control valve (10) is fixedly connected to the infusion pipeline (9). The control valve (10) controls the flow rate of liquid in the infusion pipeline (9) through an external PLC control system.

8. The biodiesel distillation, condensation, and recovery apparatus according to claim 6, characterized in that: A condenser (11) is fixedly connected to the reaction tank (8), an evaporation pipe (12) is fixedly connected between the condenser (11) and the distillation shell (2), and a reflux pipe (13) is fixedly connected between the condenser (11) and the reaction tank (8).

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