A new rapeseed oil leaching solvent trap

Abstract

The utility model relates to solvent water segregator technical field discloses a novel rapeseed oil extraction solvent water segregator, including bottom plate, inner cylinder and outer cylinder, inner cylinder and outer cylinder are coaxial and located bottom plate upper end, and the horizontal overflow port is seted up in the inner cylinder upper end, and the first baffle and second baffle are symmetrically arranged between the inner cylinder and outer cylinder, and the first gap is arranged between the first baffle lower end and bottom plate, and the mixed liquid inlet pipe is penetrated and arranged in the outer cylinder upper end, and the outer cylinder is equipped with waste water outlet pipe, and the first solvent outlet is communicated on the inner cylinder outer wall and penetrates the outer cylinder, and the waste water outlet pipe includes the integral moulding vertical portion and horizontal portion, and the through hole is seted up in the vertical portion upper end, and the height of horizontal overflow port is greater than the height of horizontal portion, and the turbulent disturbance when the mixed liquid is fed is weakened through the first baffle and second baffle, and the stable standing environment is provided for the gravity sedimentation of solvent and water phase, thereby being favorable for the delamination of mixed liquid, avoiding the emulsification phenomenon of solvent and water phase, and improving the recovery rate of solvent.

Description

Technical Field

[0001] This utility model relates to the field of solvent separator technology, specifically to a novel rapeseed oil extraction solvent separator. Background Technology

[0002] In the industrial production of rapeseed oil, leaching has become the mainstream production process due to its advantages such as high oil yield and strong raw material adaptability. Its core lies in using a solvent (mainly n-hexane) to extract the oil from rapeseed raw materials, forming an oil-containing solvent (mixed oil). The solvent and oil are then separated through subsequent evaporation and stripping processes to achieve solvent recycling. In this process, the efficiency of the solvent recovery system directly determines the production energy consumption, solvent loss, and product quality. The solvent separator, as a key device in this system, undertakes the core function of separating water from the solvent and ensuring solvent purity. However, existing solvent separators are prone to turbulent disturbances when the mixed liquid enters the separator, which disrupts the stratification environment and leads to incomplete water separation. To address this issue, we propose a novel rapeseed oil leaching solvent separator to solve the above problems. Utility Model Content

[0003] The present invention aims to provide a novel rapeseed oil solvent separator to solve the problem that existing separators are prone to turbulence and disturbance, resulting in incomplete water separation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A novel rapeseed oil extraction solvent separator includes a base plate, an inner cylinder, and an outer cylinder. The inner cylinder and the outer cylinder are coaxially disposed on the upper part of the base plate, with the inner cylinder located inside the outer cylinder. A horizontal overflow port is provided at the upper end of the inner cylinder. A first partition and a second partition are symmetrically disposed between the inner cylinder and the outer cylinder. A first gap is provided between the lower end of the first partition and the base plate. The lower end of the second partition is connected to the upper end of the base plate. A mixed liquid inlet pipe is provided through the upper end of the outer cylinder. A wastewater outlet pipe is provided on the side of the outer cylinder away from the mixed liquid inlet pipe. A first solvent outlet is connected to the outer wall of the inner cylinder and extends out of the outer cylinder. The wastewater outlet pipe includes an integrally formed vertical part and a horizontal part. The horizontal part extends through the outer cylinder, and the vertical part is located inside the outer cylinder and is parallel to the axis of the outer cylinder. A through hole is provided at the upper end of the vertical part. The height of the horizontal overflow port is greater than the height of the horizontal part.

[0005] The beneficial effects of this scheme are as follows: After the mixed liquid enters the outer cylinder through the mixed liquid inlet pipe, the cooperation of the first and second baffles divides the space between the outer and inner cylinders into a turbulent flow zone and a static flow zone. The mixed liquid inlet pipe is located in the turbulent flow zone, while the wastewater outlet pipe is located in the static flow zone. The turbulent flow zone and the static flow zone are connected by the first gap at the lower end of the first baffle. The first and second baffles weaken the turbulent disturbance during the feeding of the mixed liquid, allowing the mixed liquid to enter the static flow zone through the first gap at the lower end of the first baffle. The static flow zone provides a stable settling environment for the gravity sedimentation of the solvent and the aqueous phase, which is conducive to the stratification of the mixed liquid and avoids the emulsification of the solvent and the aqueous phase, which would lead to an increase in solvent consumption. Since the solvent density is less than that of water, the solvent is located on the upper layer after stratification, and the aqueous phase is located on the lower layer. When the height of the aqueous phase is higher than the horizontal section, the aqueous phase flows out of the outer cylinder through the horizontal section, while the water level of the solvent is higher than that of the inner cylinder and enters the inner cylinder through the horizontal overflow port, thereby completing the separation of the solvent in the mixed liquid.

[0006] Preferably, as an improvement, the height of the outlet at the lower end of the mixing pipe is lower than the height of the horizontal section.

[0007] The beneficial effects are as follows: by setting the outlet of the mixing pipe to be lower than the height of the horizontal part, the mixed liquid discharged from the mixing pipe is directly injected into the aqueous phase area inside the outer cylinder, allowing the mixed liquid to diffuse inside the aqueous phase, thereby avoiding the mixed liquid impacting the solvent surface and reducing the disturbance of the mixed liquid to the upper solvent.

[0008] Preferably, as an improvement, the outer wall of the inner cylinder is connected to a second solvent outlet that extends through the outer cylinder, and the first solvent outlet is located above the second solvent outlet.

[0009] The beneficial effects are as follows: When the solvent separator is working, the purity of the solvent discharged from the inner cylinder is improved by opening the first solvent outlet, thus preventing the aqueous phase from being discharged from the inner cylinder along with the solvent. When it is necessary to empty the inner cylinder, the liquid in the inner cylinder is discharged completely by opening the second solvent outlet.

[0010] Preferably, as an improvement, the height of the through hole is greater than the height of the inner cylinder.

[0011] The beneficial effects are: the through hole is used to balance the air pressure in the wastewater outlet pipe, ensuring the continuous discharge of water phase from the horizontal section; by setting the height of the through hole to be greater than the height of the inner cylinder, the solvent is prevented from entering the wastewater outlet pipe through the through hole and being discharged, thus reducing the solvent recovery rate.

[0012] Preferably, as an improvement, the outer wall of the outer cylinder is provided with a thermometer interface, and a thermometer is installed inside the thermometer interface. The thermometer is used to detect the temperature of the mixture. If the temperature of the mixture is too high, it will reduce the density difference between the solvent and the water phase, weakening the gravity sedimentation effect. If the temperature of the mixture is too low, it will increase the viscosity of the solvent and prolong the separation time of the mixture. When the operator observes through the thermometer that the temperature of the mixture deviates from the optimal separation range, the temperature of the mixture can be adjusted immediately, thereby improving the solvent recovery rate.

[0013] Preferably, as an improvement, the outer wall of the outer cylinder near the inlet pipe of the mixed liquid is provided with a first plane sight mirror and a second plane sight mirror, and the first plane sight mirror is located directly above the second plane sight mirror. The first and second plane sight mirrors facilitate the observation of the working condition of the solvent separator by the staff.

[0014] Preferably, as an improvement, the outer wall of the outer cylinder is provided with a maintenance manhole. The maintenance manhole provides workers with a direct passage into the interior of the outer cylinder, allowing them to complete maintenance work such as scaling cleaning, impurity removal, component inspection and replacement without disassembling the equipment. This significantly shortens maintenance time and reduces labor and equipment handling costs.

[0015] Preferably, as an improvement, a free gas port is provided at the upper end of the outer cylinder. The free gas port is used to maintain the gas pressure inside the solvent separator and avoid excessive pressure causing the water phase to be discharged from the wastewater outlet pipe too quickly, which would reduce the stratification effect of the mixed liquid and reduce the solvent recovery rate.

[0016] Preferably, as an improvement, the outer wall of the outer cylinder is provided with a vent. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the solvent separator according to an embodiment of the present invention; Figure 2 This is a top view of the solvent separator according to an embodiment of the present invention. Detailed Implementation

[0018] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: outer cylinder 1, inner cylinder 2, bottom plate 3, free gas port 4, first partition 5, second partition 6, vent port 7, mixed liquid inlet pipe 8, wastewater outlet pipe 9, vertical part 10, horizontal part 11, through hole 12, first solvent outlet 13, second solvent outlet 14, thermometer interface 15, first head-up mirror 16, second head-up mirror 17, and maintenance manhole 18.

[0019] Example The basic implementation examples are as follows: Figures 1-2 As shown, Figure 1A novel rapeseed oil solvent separator, as shown, includes a base plate 3, an inner cylinder 2, and an outer cylinder 1. The inner cylinder 2 and outer cylinder 1 are coaxially fixedly installed on the upper end of the base plate 3, with the inner cylinder 2 located inside the outer cylinder 1. In this embodiment, the base plate 3 is circular with a diameter of 2900 mm. Both the outer cylinder 1 and the inner cylinder 2 are cylindrical. The outer cylinder 1 has a diameter of 2900 mm and a maximum height of 3150 mm, while the inner cylinder 2 has a diameter of 1800 mm and a height of 2600 mm. A free gas port 4 is fixedly installed at the upper end of the outer cylinder 1. The free gas port 4 is used to maintain the gas pressure inside the solvent separator, preventing excessive pressure from causing the aqueous phase to be discharged too quickly from the wastewater outlet pipe 9, which would reduce the stratification effect of the mixed liquid and decrease the solvent recovery rate. A horizontal overflow port is provided at the upper end of the inner cylinder 2, with a diameter equal to that of the inner cylinder 2. Figure 2 The inner cylinder 2 and the outer cylinder 1 are symmetrically fixedly equipped with a first partition 5 and a second partition 6. The cooperation of the first partition 5 and the second partition 6 divides the space between the outer cylinder 1 and the inner cylinder 2 into a turbulent flow zone and a still flow zone, as shown. Figure 1 A first gap is formed between the lower end of the first partition 5 and the bottom plate 3, with a height of 500mm. The lower end of the second partition 6 is connected to the upper end of the bottom plate 3. Alternatively, a second gap can be formed between the lower end of the second partition 6 and the upper end of the bottom plate 3, with a height of 50mm. This second gap facilitates the evacuation of the solvent separator by the operator. Figure 1A mixing liquid inlet pipe 8 is fixedly installed through the upper left side of the outer cylinder 1. The mixing liquid inlet pipe 8 is DN150-10. The distance between the outlet of the mixing liquid inlet pipe 8 and the bottom plate 3 is 900mm. A wastewater outlet pipe 9 is fixedly installed on the outer wall of the right side of the outer cylinder 1. The wastewater outlet pipe 9 and the mixing liquid inlet pipe 8 are symmetrically arranged along the line connecting the first partition 5 and the second partition 6. The wastewater outlet pipe 9 is DN65-10. The wastewater outlet pipe 9 includes an integrally formed vertical part 10 and a horizontal part 11. The vertical part 10 is located inside the outer cylinder 1 and is aligned with the axis of the outer cylinder 1. The length of the vertical section 10 is 2800mm, and the distance between the lower end of the vertical section 10 and the bottom plate 3 is 100mm. The horizontal section 11 extends through the outer cylinder 1, and the distance between the horizontal section 11 and the bottom plate 3 is 2100mm. A through hole 12 is provided at the upper end of the vertical section 10, with a diameter of 12mm. The height of the through hole 12 is greater than the height of the inner cylinder 2. The through hole 12 is used to balance the air pressure in the wastewater outlet pipe 9 to ensure that the horizontal section 11 continuously discharges the aqueous phase. By setting the height of the through hole 12 to be greater than the height of the inner cylinder 2, solvent is prevented from entering through the through hole 12. The wastewater is discharged into the wastewater outlet pipe 9, reducing the solvent recovery rate. The height of the horizontal overflow port is greater than the height of the horizontal section 11, and the height of the outlet at the lower end of the mixing pipe 8 is lower than the height of the horizontal section 11. By setting the outlet of the mixing pipe 8 to be lower than the height of the horizontal section 11, the mixed liquid discharged from the mixing pipe is directly injected into the aqueous phase region inside the outer cylinder 1, allowing the mixed liquid to diffuse inside the aqueous phase, thereby avoiding the mixed liquid impacting the solvent surface and reducing the disturbance of the mixed liquid to the upper solvent. The outer wall of the inner cylinder 2 is connected to a first solvent outlet 13 that penetrates the outer cylinder 1. The axis of the first solvent outlet 13 is... The distance between the inner cylinder 2 and the base plate 3 is set to 350mm. The outer wall of the inner cylinder 2 is connected to a second solvent outlet 14 that extends through the outer cylinder 1. The axial distance between the second solvent outlet 14 and the base plate 3 is set to 50mm. The first solvent outlet 13 and the second solvent outlet 14 are of model DN65-10. When the solvent separator is working, the purity of the solvent discharged from the inner cylinder 2 is improved by opening the first solvent outlet 13, thus preventing the water phase in the inner cylinder 2 from being discharged together with the solvent. When it is necessary to empty the inner cylinder 2, the liquid in the inner cylinder 2 is discharged by opening the second solvent outlet 14.

[0020] like Figure 1A thermometer interface 15 is fixedly installed on the outer wall of the outer cylinder 1 shown. The distance between the thermometer interface 15 and the base plate 3 is set to 2000mm. A thermometer is installed inside the thermometer interface 15. The thermometer is used to detect the temperature of the mixture. If the temperature of the mixture is too high, it will reduce the density difference between the solvent and the water phase, weakening the gravity sedimentation effect. If the temperature of the mixture is too low, it will increase the viscosity of the solvent and prolong the separation time of the mixture. When the operator observes through the thermometer that the temperature of the mixture deviates from the optimal separation range, the temperature of the mixture can be adjusted immediately to improve the solvent recovery rate. A first planar viewing device is fixedly installed on the left outer wall of the outer cylinder 1. The first and second planar sight mirrors are provided. The distance between the first planar sight mirror 16 and the base plate 3 is set to 2600mm, and the distance between the second planar sight mirror 17 and the base plate 3 is set to 1100mm. The first and second planar sight mirrors 16 and 17 facilitate the observation of the internal working condition of the solvent separator by the staff. A maintenance manhole 18 is fixedly installed on the outer wall of the outer cylinder 1. The maintenance manhole 18 provides the staff with a direct passage to the inside of the outer cylinder 1, allowing for maintenance work such as scaling cleaning, impurity removal, component inspection and replacement without disassembling the equipment. This significantly shortens maintenance time and reduces labor and equipment handling costs. Figure 2 The angle between the axis of symmetry of the maintenance manhole 18 and the axis of the inlet mixing pipe 8 is set to 45°. The angle between the axes of the first solvent outlet 13 and the second solvent outlet 14 and the second partition 6 is set to 45°. The angle between the thermometer interface 15 and the axis of the first solvent outlet 13 is set to 15°. Figure 1 The outer wall of the outer cylinder 1 shown is fixedly installed with a vent 7. The vent 7 is of model DN65-10. The distance between the axis of the vent 7 and the bottom plate 3 is set to 50mm. The angle between the axis of the vent 7 and the free gas port 4 and the axis of the vertical part 10 is set to 45°.

[0021] The specific implementation process is as follows: When the solvent separator is working, the operator opens the first solvent outlet 13 and closes the second solvent outlet 14. The mixed liquid is then fed into the outer cylinder 1 through the mixed liquid inlet pipe 8. Because the first baffle 5 and the second baffle 6 divide the space between the outer cylinder 1 and the inner cylinder 2 into a turbulent flow zone and a static flow zone, and the mixed liquid inlet pipe 8 is located in the turbulent flow zone while the wastewater outlet pipe 9 is located in the static flow zone, the mixed liquid enters the turbulent flow zone and collides with the first baffle 5 and the second baffle 6, thereby reducing the turbulent disturbance during the feeding of the mixed liquid. Subsequently, the mixed liquid enters the static flow zone through the first gap at the lower end of the first baffle 5. The static flow zone is formed by the gravity of the solvent and water. Sedimentation provides a stable settling environment, which is conducive to the stratification of the mixture and avoids emulsification between the solvent and the aqueous phase, which would lead to an increase in solvent consumption. In this embodiment, the time that the mixture stays between the outer cylinder 1 and the inner cylinder 2 after entering the mixture inlet pipe 8 is 25 minutes. During this period, since the density of the solvent is less than that of water, the solvent after stratification is located on the upper layer and the aqueous phase is located on the lower layer. When the height of the aqueous phase is higher than the horizontal section 11, the aqueous phase flows out of the outer cylinder 1 through the horizontal section 11, while the water level of the solvent is higher than that of the inner cylinder 2 and enters the inner cylinder 2 through the horizontal overflow port, thereby completing the separation of the solvent in the mixture.

[0022] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A novel rapeseed oil extraction solvent separator, characterized in that: The device includes a base plate, an inner cylinder, and an outer cylinder. The inner and outer cylinders are coaxially mounted on the upper part of the base plate, with the inner cylinder located inside the outer cylinder. A horizontal overflow port is provided at the upper end of the inner cylinder. A first partition and a second partition are symmetrically arranged between the inner and outer cylinders. A first gap is provided between the lower end of the first partition and the base plate. The lower end of the second partition is connected to the upper end of the base plate. A mixed liquid inlet pipe is provided through the upper end of the outer cylinder. A wastewater outlet pipe is provided on the side of the outer cylinder away from the mixed liquid inlet pipe. A first solvent outlet is connected to the outer wall of the inner cylinder and extends out of the outer cylinder. The wastewater outlet pipe includes an integrally formed vertical part and a horizontal part. The horizontal part extends through the outer cylinder, and the vertical part is located inside the outer cylinder and is parallel to the axis of the outer cylinder. A through hole is provided at the upper end of the vertical part. The height of the horizontal overflow port is greater than the height of the horizontal part.

2. The novel rapeseed oil extraction solvent separator according to claim 1, characterized in that: The height of the outlet at the lower end of the inlet pipe is lower than the height of the horizontal section.

3. A novel rapeseed oil extraction solvent separator according to claim 2, characterized in that: The outer wall of the inner cylinder is connected to a second solvent outlet that extends through the outer cylinder, and the first solvent outlet is located above the second solvent outlet.

4. A novel rapeseed oil extraction solvent separator according to claim 3, characterized in that: The height of the through hole is greater than the height of the inner cylinder.

5. A novel rapeseed oil extraction solvent separator according to claim 4, characterized in that: The outer cylinder has a thermometer interface on its outer wall, and a thermometer is installed inside the thermometer interface.

6. A novel rapeseed oil extraction solvent separator according to claim 5, characterized in that: The outer wall of the outer cylinder near the inlet pipe of the mixed liquid is provided with a first plane sight mirror and a second plane sight mirror, and the first plane sight mirror is located directly above the second plane sight mirror.

7. A novel rapeseed oil extraction solvent separator according to claim 6, characterized in that: The outer cylinder has a maintenance manhole on its outer wall.

8. A novel rapeseed oil extraction solvent separator according to claim 7, characterized in that: The upper end of the outer cylinder is provided with a free gas port.

9. A novel rapeseed oil extraction solvent separator according to claim 8, characterized in that: The outer cylinder has a vent on its outer wall.

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