Biodiesel rectification equipment

Abstract

The utility model relates to the technical field of biodiesel processing, in particular to biodiesel rectification equipment which comprises a distillation tower, a bearing base is fixedly mounted at the bottom end of the distillation tower, a pretreatment heating assembly is arranged inside and outside the distillation tower, and the pretreatment heating assembly comprises a transmission shaft rotationally mounted inside the distillation tower; a plurality of groups of turbulent flow assemblies are arranged on the outer wall of the transmission shaft at equal intervals, each turbulent flow assembly comprises an assembly shaft fixedly installed on the outer wall of the transmission shaft, the outer wall of each assembly shaft is rotationally sleeved with a shaft sleeve, and a turbulent flow guide plate is fixedly installed on the outer wall of each shaft sleeve. According to the utility model, the rotating turbulent flow guide plate can be used for carrying out turbulent flow treatment on steam in the circulation channel and the gap between the adjacent tower plates, so that the flow path of the steam becomes more complicated through turbulent flow, the retention time of the steam in the tower is prolonged, and the sufficient transfer of heat is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of biodiesel processing, in particular to a biodiesel distillation device. Background Art

[0002] Biodiesel is a green and environmentally friendly energy source, but its production requires meticulous separation to improve its purity and stability. Distillation, as a common separation method, is widely used in biodiesel separation. Distillation separates substances based on their boiling points. By controlling temperature within a vertical distillation column, the different components are sublimated, condensed, and collected sequentially according to their boiling points. This effectively removes impurities from biodiesel and improves the quality of the final product.

[0003] During biodiesel distillation, the raw materials are fed into a distillation column or tower for purification. The distillation tower is typically equipped with trays to increase the contact area between the gas and liquid phases, improving separation efficiency. During the distillation process, the components are sequentially distilled from the top of the tower by controlling the temperature gradient based on their boiling points. Generally, the light components are distilled first, while the heavy components remain at the bottom of the tower.

[0004] In the existing technical solution, the contact area between the gas and liquid phases is increased by setting up tower plates. However, the single tower plate structure has the problem that the steam and the liquid in the tower cannot be fully mixed. If the mixing is insufficient, it will directly lead to a decrease in distillation efficiency; the components in the steam cannot be effectively transferred to the liquid, or the components in the liquid cannot be effectively carried away by the steam, which will make the distillation process slow and incomplete. Summary of the Invention

[0005] The purpose of the utility model is to provide a biodiesel distillation equipment, which can perform turbulent flow treatment on the steam in the flow channel and the gap between adjacent tower plates through a rotating turbulent guide plate. Through the turbulence, the flow path of the steam becomes more complicated, the residence time of the steam in the tower is increased, which is conducive to the full transfer of heat. The turbulence helps to break the laminar flow state of the steam and form turbulence, thereby promoting the mixing of the steam and the liquid in the tower. The improvement of the mixing uniformity helps to accelerate the mass transfer rate, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a biodiesel distillation device, comprising a distillation tower, a supporting base fixedly mounted at the bottom end of the distillation tower, a pretreatment heating assembly provided both inside and outside the distillation tower, the pretreatment heating assembly comprising a transmission shaft rotatably mounted inside the distillation tower;

[0007] A spoiler assembly is provided on the outer wall of the transmission shaft, and multiple groups of the spoiler assemblies are equidistantly arranged. The spoiler assembly includes an assembly shaft fixedly mounted on the outer wall of the transmission shaft, a shaft sleeve is rotatably provided on the outer wall of the assembly shaft, and a spoiler guide plate is fixedly mounted on the outer wall of the shaft sleeve. There are six spoiler guide plates distributed in a circular array, and the thickness of the shaft sleeve decreases from the inside to the outside.

[0008] Preferably, the pretreatment heating assembly further comprises a servo motor fixedly mounted on the bottom end surface of the supporting base, the output end of the servo motor passes through the supporting base and is fixedly connected to a transmission shaft, and the interior of the transmission shaft is a hollow structure.

[0009] Preferably, a dispersion guide rod is fixedly installed on the top of the transmission shaft, and there are two dispersion guide rods symmetrically distributed, and the interior of the dispersion guide rod is a hollow structure.

[0010] Preferably, the dispersion guide rod and the transmission shaft are connected to each other, and a spraying through hole is provided on the bottom end surface of the dispersion guide rod, and a plurality of the spraying through holes are arranged at equal intervals.

[0011] Preferably, a conveying sleeve is provided on the bottom rotating sleeve of the outer wall of the transmission shaft, a raw material conveying pipe is fixedly installed on the outer wall of the conveying sleeve, a connecting hole is opened on the outer wall of the transmission shaft corresponding to the conveying sleeve, and the raw material conveying pipe is connected to the inside of the transmission shaft through the conveying sleeve and the connecting hole.

[0012] Preferably, a ring-shaped tower plate is fixed on the inner wall of the distillation tower, the tower plates and the spoiler components are alternately spaced, and the thickness of the tower plates increases from the inside to the outside.

[0013] Preferably, the bottom of the outer wall of the distillation tower is fixedly connected to a heavy oil discharge valve pipe, and a heating rod is embedded on the inner wall of the bottom end of the distillation tower.

[0014] Preferably, a flow channel is formed between the transmission shaft and the tower plate, and the top of the distillation tower is fixedly connected to a steam discharge pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model can perform turbulent flow treatment on the steam in the flow channel and the gap between adjacent tower plates through the rotating turbulent guide plate. Through the turbulence, the flow path of the steam becomes more complicated, the residence time of the steam in the tower is increased, which is conducive to the full transfer of heat. The turbulence helps to break the laminar flow state of the steam and form turbulence, thereby promoting the mixing of the steam and the liquid in the tower. The improvement of the mixing uniformity helps to accelerate the mass transfer rate, that is, the diffusion rate of the components in the steam into the liquid; and through the turbulence, the components in the steam can diffuse into the liquid more quickly, thereby realizing the separation and purification of the components.

[0017] 2. The utility model uses the heat generated by the heating rod and the steam generated by the heating to preheat the biodiesel transmitted in the transmission shaft. The preheating treatment can make the mixture in the biodiesel more easily decomposed into various components, thereby improving the difference or separation degree between different fractions in the distillation tower. Therefore, during the distillation process, the various components can be separated more effectively, thereby improving the quality and yield of the fractions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the distillation tower of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the transmission shaft connection of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the spoiler component of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the connection part of the delivery sleeve of the present invention.

[0024] Description of reference numerals:

[0025] 1. Distillation tower; 2. Support base; 3. Pretreatment heating assembly; 301. Servo motor; 302. Drive shaft; 303. Dispersion guide rod; 304. Spraying hole; 305. Raw material conveying pipe; 306. Conveying sleeve; 307. Connecting hole; 4. Heavy oil discharge valve pipe; 5. Turbine assembly; 501. Assembly shaft; 502. Bushing; 503. Turbine guide plate; 6. Tower plate; 7. Circulation channel; 8. Heating rod; 9. Steam discharge pipe. DETAILED DESCRIPTION

[0026] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0027] The utility model provides a technical solution:

[0028] See also Figures 1 to 3 and Figure 5 A biodiesel distillation device includes a distillation tower 1, a supporting base 2 is fixedly installed at the bottom end of the distillation tower 1, and a pretreatment heating component 3 is provided inside and outside the distillation tower 1. The pretreatment heating component 3 includes a transmission shaft 302 rotatably installed inside the distillation tower 1; the pretreatment heating component 3 also includes a servo motor 301 fixedly installed on the bottom end surface of the supporting base 2, the output end of the servo motor 301 passes through the supporting base 2 and is fixedly connected to the transmission shaft 302, and the interior of the transmission shaft 302 is a hollow structure; a dispersion guide rod 303 is fixedly installed on the top of the transmission shaft 302, and two dispersion guide rods 303 are symmetrically distributed. The interior of the dispersion guide rod 303 is a hollow structure. The dispersion guide rod 303 is connected to the transmission shaft 302, and a spraying hole 304 is provided on the bottom end surface of the dispersion guide rod 303, and a plurality of spraying holes 304 are arranged at equal intervals; a conveying sleeve 306 is rotatably sleeved on the bottom of the outer wall of the transmission shaft 302, and a raw material conveying pipe 305 is fixedly installed on the outer wall of the conveying sleeve 306; a connecting hole 307 is provided on the outer wall of the transmission shaft 302 at a position corresponding to the conveying sleeve 306, and the raw material conveying pipe 305 is connected to the inside of the transmission shaft 302 through the conveying sleeve 306 and the connecting hole 307; a heavy oil discharge valve pipe 4 is fixedly connected to the bottom of the outer wall of the distillation tower 1, and a heating rod 8 is embedded in the inner wall of the bottom end of the distillation tower 1.

[0029] By adopting the above technical solution, when in use, the raw material delivery pipe 305 is connected to the external pipeline, and the biodiesel to be distilled can be delivered to the raw material delivery pipe 305 through the external pipeline. The liquid raw material can be delivered to the delivery sleeve 306 through the communication between the raw material delivery pipe 305 and the delivery sleeve 306. The delivery sleeve 306 is connected with the inside of the transmission shaft 302 through the communication hole 307. In this way, the liquid raw material can be delivered to the transmission shaft 302. The transmission shaft 302 is connected with the hollow dispersion guide rod 303, and can spray and discharge the biodiesel to be distilled through the spray through hole 304. At the same time, during the delivery of the liquid raw material, the heating rod 8 is energized, so that the heating rod 8 can heat the bottom end of the interior of the distillation tower 1. The heating of the liquid raw material at the bottom end of the interior of the distillation tower 1 by the heating rod 8 can achieve the different components in the biodiesel. According to the difference in their boiling points, they gradually evaporate, thereby achieving effective separation. Heating can accelerate the movement of molecules, making it easier for components with lower boiling points to evaporate, while components with higher boiling points remain in the liquid, thereby achieving the purpose of separation. At the same time, the heat generated by the heating rod 8 and the steam generated by heating can preheat the biodiesel transmitted in the drive shaft 302. The preheating treatment can make the mixture in the biodiesel easier to decompose into various components, thereby improving the difference or separation degree between different fractions in the distillation tower, so that in the distillation process, the various components can be separated more effectively, thereby improving the quality and yield of the fractions; the preheating treatment can make the feed temperature higher, thereby reducing the temperature difference that needs to be overcome between the top and bottom of the tower, and can also make the feed temperature more uniform, so that the mixture can enter more smoothly before entering the distillation tower.

[0030] Specifically, such as Figures 2 to 5 As shown, a spoiler assembly 5 is provided on the outer wall of the transmission shaft 302, and multiple groups of spoiler assemblies 5 are equidistantly arranged. The spoiler assembly 5 includes an assembly shaft 501 fixedly mounted on the outer wall of the transmission shaft 302, and a shaft sleeve 502 is rotatably sleeved on the outer wall of the assembly shaft 501. A spoiler guide plate 503 is fixedly mounted on the outer wall of the shaft sleeve 502. There are six spoiler guide plates 503 distributed in an annular array, and the thickness of the shaft sleeve 502 decreases from the inside to the outside; a tower plate 6 with an annular structure is fixed on the inner wall of the distillation tower 1, and the tower plates 6 and the spoiler assemblies 5 are alternately spaced. The thickness of the tower plates 6 increases from the inside to the outside. A flow channel 7 is formed between the transmission shaft 302 and the tower plate 6, and a steam discharge pipe 9 is fixedly connected to the top of the distillation tower 1.

[0031] By adopting the above technical solution, when in use, the servo motor 301 is started, and the servo motor 301 can drive the transmission shaft 302 to rotate. The rotation of the transmission shaft 302 can drive the dispersion guide rod 303 on the top outer wall to rotate, so that the biodiesel to be distilled can be sprayed on the tower plate 6 through the spraying hole 304 at the bottom end of the dispersion guide rod 303. The tower plate 6 with an annular structure is designed to be high on the outside and low on the inside, so that the liquid raw material sprayed on the tower plate 6 can flow toward the center of the tower plate 6, so that the liquid raw material can drip onto the rotating spoiler component 5 through the steam circulation channel 7. When the liquid raw material drips onto the spoiler guide plate 503, the spoiler guide plate 503 will rotate on the assembly shaft 501 through the shaft sleeve 502 under the impact of the liquid, so that the rotating spoiler guide plate 503 can Turbulence treatment of steam can make the flow path of steam more complicated, increase the residence time of steam in the tower, and be beneficial to the full transfer of heat. Turbulence helps to break the laminar flow state of steam and form turbulence, thereby promoting the mixing of steam and liquid in the tower. The improvement of mixing uniformity helps to accelerate the mass transfer rate, that is, the diffusion rate of components in steam to liquid; and turbulence can increase the interface area between steam and liquid in the tower, thereby increasing the mass transfer rate; and through turbulence, components in steam can diffuse into liquid more quickly, realizing separation and purification of components; at the same time, turbulence helps to reduce dead zones or stagnant zones in the tower, avoiding steam accumulation in these areas causing local overheating or condensation. By optimizing the flow state of steam, turbulence can maintain a uniform distribution of temperature and pressure in the tower, thereby improving operational stability. Driven by the rotation of the transmission shaft 302, the spoiler assembly 5 will rotate with the transmission shaft 302, so that the liquid raw material dripping on the spoiler assembly 5 can flow to the outermost side of the tower plate 6 through centrifugal force and the structural design of the spoiler guide plate 503 and the shaft sleeve 502 with high inside and low outside, so that the liquid raw material can be fully distributed on the end face of the tower plate 6. After the liquid raw material is fully distributed on the end face of the tower plate 6, the contact area between the gas and liquid phases can be increased, thereby improving the mass transfer efficiency; in the distillation process, mass transfer between the gas and liquid phases is the key to achieving separation; when the liquid raw material is evenly distributed, more gas molecules can collide and exchange with liquid molecules, making the separation process more efficient; the steam flowing to the top of the distillation tower 1 through the circulation channel 7 can be discharged through the steam exhaust pipe 9.

[0032] Working principle: The supporting base 2 provided in the present device can provide support for the stable operation of the device. When performing distillation, the raw material delivery pipe 305 is connected to the external pipeline, and the biodiesel to be distilled can be delivered to the raw material delivery pipe 305 through the external pipeline. The liquid raw material can be delivered to the delivery sleeve 306 through the communication between the raw material delivery pipe 305 and the delivery sleeve 306. The delivery sleeve 306 is connected with the interior of the transmission shaft 302 through the communication hole 307, so that the liquid raw material can be delivered to the transmission shaft 302. The transmission shaft 302 is connected with the hollow dispersion guide rod 303 and can spray and discharge the biodiesel to be distilled through the spray through hole 304. At the same time, during the delivery of the liquid raw material, the heating rod 8 is energized so that the heating rod 8 can heat the bottom end of the interior of the distillation tower 1. The servo motor 301 is started, and the servo motor 301 can drive the transmission shaft 302 to rotate. The rotation of the transmission shaft 302 can drive the dispersion guide rod 303 on the top outer wall to rotate, so that the dispersion guide rod 303 on the top outer wall can rotate. The spray hole 304 at the bottom end of the rod 303 sprays the biodiesel to be distilled onto the tower plate 6. The tower plate 6 with an annular structure is designed to be high on the outside and low on the inside, so that the liquid raw material sprayed on the tower plate 6 can flow toward the center of the tower plate 6, so that the liquid raw material can drip onto the rotating spoiler component 5 through the steam flow channel 7. When the liquid raw material drips onto the spoiler guide plate 503, the spoiler guide plate 503 will rotate on the assembly shaft 501 through the shaft sleeve 502 under the impact of the liquid, so that the rotating spoiler guide plate 503 can The steam in the circulation channel 7 and the gap between the adjacent tower plates 6 is subjected to turbulence treatment. Driven by the rotation of the transmission shaft 302, the turbulence assembly 5 will rotate together with the transmission shaft 302. In this way, the liquid raw material dripping on the turbulence assembly 5 can flow to the outermost side of the tower plate 6 due to centrifugal force and the structural design of the turbulence guide plate 503 and the shaft sleeve 502 with high inner side and low outer side, so that the liquid raw material can be fully distributed on the end surface of the tower plate 6. Finally, the steam flowing to the top of the distillation tower 1 through the circulation channel 7 can be discharged through the steam discharge pipe 9.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A biodiesel distillation device, comprising a distillation tower (1), characterized in that: A supporting base (2) is fixedly mounted at the bottom end of the distillation tower (1), and a pretreatment heating assembly (3) is provided on the inside and outside of the distillation tower (1). The pretreatment heating assembly (3) includes a transmission shaft (302) rotatably mounted inside the distillation tower (1); A spoiler assembly (5) is provided on the outer wall of the transmission shaft (302), and a plurality of spoiler assemblies (5) are arranged at equal intervals. The spoiler assembly (5) comprises an assembly shaft (501) fixedly mounted on the outer wall of the transmission shaft (302), a shaft sleeve (502) being rotatably sleeved on the outer wall of the assembly shaft (501), and a spoiler guide plate (503) being fixedly mounted on the outer wall of the shaft sleeve (502), and six spoiler guide plates (503) are distributed in an annular array, and the thickness of the shaft sleeve (502) decreases from the inside to the outside.

2. A biodiesel distillation device according to claim 1, characterized in that: The pretreatment heating assembly (3) further comprises a servo motor (301) fixedly mounted on the bottom end surface of the supporting base (2); the output end of the servo motor (301) passes through the supporting base (2) and is fixedly connected to a transmission shaft (302); the interior of the transmission shaft (302) is a hollow structure.

3. A biodiesel distillation device according to claim 2, characterized in that: A dispersion guide rod (303) is fixedly mounted on the top of the transmission shaft (302). Two dispersion guide rods (303) are symmetrically distributed, and the interior of the dispersion guide rods (303) is a hollow structure.

4. A biodiesel distillation device according to claim 3, characterized in that: The dispersion guide rod (303) and the transmission shaft (302) are communicated with each other. A spraying through hole (304) is provided on the bottom end surface of the dispersion guide rod (303). A plurality of the spraying through holes (304) are arranged at equal intervals.

5. A biodiesel distillation device according to claim 4, characterized in that: A conveying sleeve (306) is rotatably sleeved on the bottom of the outer wall of the transmission shaft (302); a raw material conveying pipe (305) is fixedly mounted on the outer wall of the conveying sleeve (306); a communicating hole (307) is opened on the outer wall of the transmission shaft (302) at a position corresponding to the conveying sleeve (306); the raw material conveying pipe (305) is communicated with the interior of the transmission shaft (302) through the conveying sleeve (306) and the communicating hole (307).

6. The biodiesel distillation equipment according to claim 1, characterized in that: A ring-shaped tray (6) is fixed on the inner wall of the distillation tower (1), the tray (6) and the flow-turbulating assembly (5) are alternately spaced, and the thickness of the tray (6) increases from the inside to the outside.

7. The biodiesel distillation equipment according to claim 1, characterized in that: The bottom of the outer wall of the distillation tower (1) is fixedly connected to a heavy oil discharge valve pipe (4), and a heating rod (8) is embedded on the inner wall of the bottom end of the distillation tower (1).

8. The biodiesel distillation equipment according to claim 1, characterized in that: A flow channel (7) is formed between the transmission shaft (302) and the tower plate (6), and a steam discharge pipe (9) is fixedly connected to the top of the distillation tower (1).

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