Energy-saving soybean oil pressing system

Abstract

The utility model discloses an energy -conserving soybean oil -pressing system relates to equipment energy -conserving technical field. The system includes bulking machine and conditioning tower, and bulking machine has exhaust port and air inlet, exhaust port communicates with exhaust duct, and exhaust duct is equipped with first heat exchange unit, still includes first watercourse, and first watercourse communicates with first heat exchange unit, and first watercourse has flowing liquid in, is used for absorbing the heat of first heat exchange unit, and is equipped with first water pump on first watercourse. Exhaust duct is equipped with tail gas adsorption unit, or the other end of exhaust duct communicates with air inlet, forms closed -type circulation. Ultimately effectively improved the energy utilization of soybean oil -pressing system, reduces or eliminates waste gas emission.

Description

Technical Field

[0001] This utility model relates to the field of energy-saving equipment technology, specifically to an energy-saving soybean oil pressing system. Background Technology

[0002] The soybean oil extraction process mainly includes four core stages: pretreatment, puffing, leaching / pressing, and refining. It involves key equipment such as puffers, conditioning towers, and cooling systems (e.g., air conditioning systems or dedicated coolers). Pretreatment involves washing, sieving, and crushing the soybean material to remove impurities and increase surface area. The conditioning tower uses steam / humidified air and hot air to regulate the moisture and temperature of the soybeans, disrupting cell structure and facilitating peeling and subsequent leaching. The puffer extrudes and puffs the conditioned soybean powder, disrupting oil cells, increasing porosity, and improving leaching efficiency. The puffed soybeans are at a high temperature and need to be rapidly cooled to room temperature to prevent oil oxidation and avoid clumping that could affect leaching / pressing.

[0003] In existing technologies, some manufacturers install air inlets and exhaust pipes on the extruder to cool the conditioned soybean material using fresh air (ambient air). However, because the conditioned soybean material mixes with high-temperature steam / humid air, the exhaust gas still has a high temperature after cooling and contains a large amount of water vapor, odors from the soybean material, and gases and impurities such as VCOs. On the one hand, energy loss is high and utilization rate is low. On the other hand, the emitted waste gas causes environmental pollution.

[0004] Therefore, there is an urgent need to provide an energy-saving soybean oil extraction system to solve the above-mentioned technical problems. Summary of the Invention

[0005] In response to the problems in related technologies, this utility model proposes an energy-saving soybean oil pressing system that can improve energy utilization and reduce or even eliminate the emission of polluting gases.

[0006] This utility model is implemented as follows:

[0007] An energy-saving soybean oil extraction system includes an extruder and a conditioning tower. A channel is provided between the top of the conditioning tower and the extruder for conveying soybean material carrying steam. An exhaust port is provided at the high position of the extruder, and an air inlet is provided at the low position of the extruder. Here, "high position" and "low position" refer to the former being higher than the latter.

[0008] The air inlet is connected to the air intake pipe; the exhaust outlet is connected to the exhaust pipe; the exhaust pipe is equipped with a first heat exchange unit and an exhaust gas adsorption unit, and the exhaust gas adsorption unit is located downstream of the first heat exchange unit; here, downstream is downstream based on the gas emission direction.

[0009] The air intake pipe is provided with a first air supply unit; or the exhaust pipe is provided with a second air supply unit; or the first air supply unit and the second air supply unit are provided simultaneously; the first air supply unit is used to draw air from the outside into the air intake pipe; the second air supply unit is used to draw air from inside the extruder into the exhaust pipe; the second air supply unit is located upstream of the exhaust gas adsorption unit;

[0010] It also includes a first water channel, which is connected to the first heat exchange unit; the first water channel contains flowing liquid for absorbing heat from the first heat exchange unit; and a first water pump is installed on the first water channel.

[0011] Furthermore, the first heat exchange unit uses a gas-water heat exchanger, which is a device for exchanging heat between gas and liquid.

[0012] In this scheme, a liquid (generally water) is used as the heat transfer medium to exchange heat with the gas in the exhaust pipe. In actual production, the emitted gas has a heat level of around 70°C, still offering significant potential for utilization. After heat exchange, the heat from the exhaust can be used to generate steam / humid air in the conditioning tower, or to directly heat the soybean material in the conditioning tower, achieving further energy utilization. After heat exchange in the first heat exchange unit, the exhaust temperature can be reduced to approximately 50°C.

[0013] The first water pump is used to circulate the liquid in the first waterway.

[0014] The exhaust gas adsorption unit is used to adsorb impurities in exhaust gas, such as dust, mainly soybean protein powder particles, and VOCs. Specifically, the exhaust gas adsorption unit can be an activated carbon fixed bed adsorption tower.

[0015] This utility model also provides an energy-saving soybean oil extraction system, including an extruder and a conditioning tower. A channel is provided between the top of the conditioning tower and the extruder for conveying soybean material carrying steam. An exhaust port is provided at the high position of the extruder, and an air inlet is provided at the low position of the extruder.

[0016] An exhaust pipe is connected between the air inlet and the exhaust outlet;

[0017] The exhaust pipe is equipped with a second air supply unit and a first heat exchange unit, and the first heat exchange unit is located downstream of the second air inlet unit; the second air supply unit is used to draw air from inside the extruder into the exhaust pipe;

[0018] The exhaust pipe may or may not be equipped with a first air supply unit, and the first air supply unit is located near the air inlet.

[0019] It also includes a first water channel, which is connected to the first heat exchange unit; the first water channel contains flowing liquid for absorbing heat from the first heat exchange unit.

[0020] The first and second heat exchange units absorb the heat from the exhaust gas in the exhaust pipe and apply it to the conditioning tower. After the exhaust gas in the exhaust pipe has absorbed all the heat, its temperature drops and it returns to the extruder.

[0021] As a further optimization of the above scheme, the conditioning tower has a conditioning chamber; the conditioning chamber is provided with a second heat exchange unit; the second heat exchange unit is connected to the first water channel.

[0022] The second heat exchange unit can exchange heat (heat) the air in the conditioning chamber, that is, heat the soybean material in the conditioning chamber.

[0023] As a further optimization of the above scheme, the conditioning tower has a conditioning chamber and a steam chamber; the steam chamber is used to generate steam or humid air; the steam chamber is connected to the conditioning chamber; the steam chamber is connected to the first water channel; the liquid is water; the conditioning tower is also provided with a heating unit for heating the steam chamber.

[0024] The first heat exchange unit can preheat the water in the steam chamber, reducing the energy required by the heating unit.

[0025] As a further optimization of the above scheme, both the first heat exchange unit and the second heat exchange unit adopt finned tube heat exchangers; the finned heat exchanger includes heat exchange tubes, and multiple heat exchange fins are provided along the outer periphery of the heat exchange tubes.

[0026] The heat exchange pipe is connected to the first water channel; the heat exchange fins of the first heat exchange unit are exposed inside the exhaust pipe; the heat exchange fins of the second heat exchange unit are exposed inside the conditioning chamber.

[0027] As a further optimization of the above solution, the exhaust pipe is provided with a detachable or fixed dust filter unit; the dust filter unit is located between the second air supply unit and the first heat exchange unit.

[0028] The dust filtration unit is used to adsorb and filter dust and impurities carried in the exhaust gas. Furthermore, the dust filtration unit employs a cartridge dust collector.

[0029] As a further optimization of the above solution, a condensation unit is provided on the exhaust pipe; the condensation unit is located downstream of the first heat exchange unit;

[0030] It also includes a drainage pipe, which includes an inlet and an outlet; the drainage pipe is connected to the exhaust pipe, the inlet is located between the condensation unit and the air inlet, and is located at the lowest point of the exhaust pipe; the horizontal position of the inlet is higher than the horizontal position of the outlet.

[0031] The condensation unit further cools the exhaust gas, causing the moisture in the exhaust to condense. Simultaneously, some odor-causing substances in the exhaust also adhere to the condensate and are discharged through the drain pipe. After condensation, the exhaust gas can be cooled to approximately 20°C.

[0032] As a further optimization of the above scheme, the condensation unit includes a third heat exchange unit and a refrigeration unit; the third heat exchange unit is located on the exhaust pipe; a second water channel is provided between the third heat exchange unit and the refrigeration unit; a second water pump is provided on the second water channel.

[0033] The second water pump is used for the flow of liquid in the second water channel; the liquid in the second water channel serves as a heat transfer medium and is cooled by the refrigeration unit.

[0034] As a further optimization of the above scheme, the third heat exchange unit adopts a finned tube heat exchanger; the finned heat exchanger includes a heat exchange tube, and multiple heat exchange fins are provided along the outer periphery of the heat exchange tube.

[0035] The heat exchange pipe is connected to the second water channel; the heat exchange fins of the third heat exchange unit are exposed inside the exhaust pipe.

[0036] As a further optimization of the above scheme, both the first air supply unit and the second air supply unit are fans.

[0037] The beneficial effects are as follows:

[0038] This utility model provides an energy-saving soybean oil pressing system. For the exhaust pipe connected to the extruder, the first heat exchange unit absorbs the heat of the exhaust gas from the exhaust pipe and applies the heat to other areas, such as the conditioning tower, to achieve further utilization of the heat and reduce energy waste. At the same time, a tail gas adsorption unit is set on the exhaust pipe, or the exhaust pipe is connected to the air inlet to achieve closed-loop circulation, which can effectively reduce or eliminate exhaust gas emissions. Attached Figure Description

[0039] Figure 1 This is a connection diagram of the extruder provided in Embodiment 1 of this utility model;

[0040] Figure 2 This is a schematic diagram of the connection of the conditioning tower provided in Embodiment 1 of this utility model;

[0041] Figure 3 A schematic diagram of the connection between the heat exchange pipe and the heat exchange fins provided in Embodiment 1 of this utility model;

[0042] Figure 4 This is a connection diagram of the extruder provided in Embodiment 2 of this utility model;

[0043] Figure label:

[0044] 1. Extruder; 1-1. Air inlet; 1-2. Exhaust outlet; 1-3. Exhaust pipe; 1-4. Air inlet pipe;

[0045] 2. Conditioning tower; 2-1. Conditioning chamber; 2-2. Steam chamber; 2-3. Heating unit;

[0046] 3. Soybean materials;

[0047] 4. First heat exchange unit;

[0048] 5. Exhaust gas adsorption unit;

[0049] 6. First air supply unit;

[0050] 7. First waterway; 71. First water pump;

[0051] 8. Second air supply unit;

[0052] 9. Dust filtration unit;

[0053] 10. Third heat exchange unit;

[0054] 11. Drainage pipe; 11-1. Water inlet; 11-2. Water outlet;

[0055] 12. Refrigeration unit;

[0056] 13. Second waterway; 13-1. Second water pump;

[0057] 14. Immersion space;

[0058] 15. Heat exchange pipes; 15-1. Heat exchange fins. Detailed Implementation

[0059] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0060] Example 1

[0061] like Figures 1 to 3 As shown, this embodiment provides an energy-saving soybean oil extraction system, including an extruder 1 and a conditioning tower 2. A channel is provided between the top of the conditioning tower 2 and the extruder 1 for conveying soybean material 3 carrying steam. An exhaust port 1-2 is provided at the high position of the extruder 1. An air inlet 1-1 is provided at the low position of the extruder 1. Here, "high position" and "low position" refer to the former being higher than the latter.

[0062] The air inlet 1-1 is connected to the air inlet pipe 1-4; the exhaust outlet 1-2 is connected to the exhaust pipe 1-3; the exhaust pipe 1-3 is equipped with a first heat exchange unit 4 and a tail gas adsorption unit 5, and the tail gas adsorption unit 5 is located downstream of the first heat exchange unit 4; here, downstream refers to the direction of gas emission. The tail gas adsorption unit 5 adopts an activated carbon fixed bed adsorption tower.

[0063] The air intake duct 1-4 is equipped with a first air supply unit 6, which is a fan; the first air supply unit 6 is used to draw air from the outside into the air intake duct 1-4.

[0064] It also includes a first water channel 7, which is connected to the first heat exchange unit 4; the first water channel 7 contains flowing liquid for absorbing the heat of the first heat exchange unit 4; and a first water pump 71 is provided on the first water channel 7.

[0065] In this embodiment, the conditioning tower 2 has a conditioning chamber 2-1 and a steam chamber 2-2; the steam chamber 2-2 is used to generate steam; the steam chamber 2-2 is connected to the conditioning chamber 2-1; the steam chamber 2-2 is connected to the first water channel 7; the liquid is water; the conditioning tower 2 is also provided with a heating unit 2-3 for heating the steam chamber 2-2. The first heat exchange unit 4 can preheat the water in the steam chamber 2-2, reducing the energy required by the heating unit 2-3.

[0066] In this embodiment, the first heat exchange unit 4 adopts a finned pipe heat exchanger; the finned heat exchanger includes a heat exchange pipe 15, and a plurality of heat exchange fins 15-1 are provided along the outer periphery of the heat exchange pipe 15.

[0067] The heat exchange pipe 15 is connected to the first water channel 7; the heat exchange fins 15-1 of the first heat exchange unit 4 are exposed inside the exhaust pipe 1-3.

[0068] The lower end of the extruder 1 is connected to the leaching space 14, and the extruded soybean material 3 is directly transported into the leaching space 14 for the leaching step.

[0069] Example 2

[0070] This implementation example Figure 4 As shown, features not explained in this embodiment are explained using the method described in Embodiment 1, and will not be repeated here. The difference between this embodiment and Embodiment 1 is:

[0071] The two ends of the exhaust pipe 1-3 are connected to the air inlet 1-1 and the exhaust outlet 1-2, respectively; the exhaust flow direction in the exhaust pipe 1-3 is from the exhaust outlet 1-2 to the air inlet 1-1. The exhaust pipe 1-3 is equipped with a first air supply unit 6 (specifically a fan), a dust filtration unit 9 (specifically a cartridge dust collector), a first heat exchange unit 4, a third heat exchange unit 10, and a drain pipe 11 in sequence. The water inlet 11-1 of the drain pipe 11 is located at the lowest point of the exhaust pipe 1-3; the horizontal position of the water inlet 11-1 of the drain pipe 11 is higher than that of the water outlet 11-2.

[0072] It also includes a refrigeration unit 12 and a second water channel 13. The third heat exchange unit 10 adopts a finned tube heat exchanger; the finned heat exchanger includes a heat exchange tube 15, and multiple heat exchange fins 15-1 are provided along the outer periphery of the heat exchange tube 15; the heat exchange tube 15 is connected to the second water channel 13; the heat exchange fins 15-1 of the third heat exchange unit 10 are exposed inside the exhaust tube 1-3. The second water channel 13 is connected to the refrigeration unit 12. A second water pump 13-1 is provided on the second water channel 13. The second water pump 13-1 is used for the liquid flow in the second water channel 13; the liquid in the second water channel 13 serves as a heat transfer medium and is cooled by the refrigeration unit 12.

[0073] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. An energy-saving soybean oil extraction system, comprising an extruder and a conditioning tower, wherein a channel is provided between the top of the conditioning tower and the extruder for conveying steam-carrying soybean material; characterized in that: The extruder is provided with an exhaust port at its high position and an air inlet at its low position. The air inlet is connected to the air inlet pipe; the exhaust outlet is connected to the exhaust pipe; the exhaust pipe is provided with a first heat exchange unit and an exhaust gas adsorption unit, and the exhaust gas adsorption unit is located downstream of the first heat exchange unit. The air intake pipe is provided with a first air supply unit; or the exhaust pipe is provided with a second air supply unit; or the first air supply unit and the second air supply unit are provided simultaneously; the first air supply unit is used to draw air from the outside into the air intake pipe; the second air supply unit is used to draw air from inside the extruder into the exhaust pipe; the second air supply unit is located upstream of the exhaust gas adsorption unit; It also includes a first water channel, which is connected to the first heat exchange unit; the first water channel contains flowing liquid for absorbing heat from the first heat exchange unit; and a first water pump is installed on the first water channel.

2. An energy-saving soybean oil extraction system, comprising an extruder and a conditioning tower, wherein a channel is provided between the top of the conditioning tower and the extruder for conveying steam-carrying soybean material; characterized in that: The extruder is provided with an exhaust port at its high position and an air inlet at its low position. An exhaust pipe is connected between the air inlet and the exhaust outlet; The exhaust pipe is equipped with a second air supply unit and a first heat exchange unit, and the first heat exchange unit is located downstream of the second air inlet unit; the second air supply unit is used to draw air from inside the extruder into the exhaust pipe; The exhaust pipe may or may not be equipped with a first air supply unit, and the first air supply unit is located near the air inlet. It also includes a first water channel, which is connected to the first heat exchange unit; the first water channel contains flowing liquid for absorbing heat from the first heat exchange unit.

3. An energy-saving soybean oil extraction system according to claim 1 or 2, wherein the conditioning tower has a conditioning chamber; characterized in that: The conditioning chamber is equipped with a second heat exchange unit; the second heat exchange unit is connected to the first water channel.

4. An energy-saving soybean oil extraction system according to claim 1 or 2, wherein the conditioning tower has a conditioning chamber and a steam chamber; the steam chamber is used to generate steam or humidified air; the steam chamber is connected to the conditioning chamber; characterized in that: The steam chamber is connected to the first water channel; the liquid is water; the conditioning tower is also equipped with a heating unit for heating the steam chamber.

5. The energy-saving soybean oil pressing system according to claim 3, characterized in that: Both the first heat exchange unit and the second heat exchange unit adopt finned tube heat exchangers; the finned heat exchanger includes heat exchange tubes, and multiple heat exchange fins are provided along the outer periphery of the heat exchange tubes; The heat exchange pipe is connected to the first water channel; the heat exchange fins of the first heat exchange unit are exposed inside the exhaust pipe; the heat exchange fins of the second heat exchange unit are exposed inside the conditioning chamber.

6. The energy-saving soybean oil pressing system according to claim 2, characterized in that: The exhaust duct is equipped with a detachable or fixed dust filter unit; the dust filter unit is located between the second air supply unit and the first heat exchange unit.

7. The energy-saving soybean oil pressing system according to claim 2, characterized in that: A condensation unit is provided on the exhaust pipe; the condensation unit is located downstream of the first heat exchange unit; It also includes a drainage pipe, which includes an inlet and an outlet; the drainage pipe is connected to the exhaust pipe, the inlet is located between the condensation unit and the air inlet, and is located at the lowest point of the exhaust pipe; the horizontal position of the inlet is higher than the horizontal position of the outlet.

8. The energy-saving soybean oil pressing system according to claim 7, characterized in that: The condensation unit includes a third heat exchange unit and a refrigeration unit; the third heat exchange unit is located on the exhaust pipe; a second water channel is provided between the third heat exchange unit and the refrigeration unit; a second water pump is provided on the second water channel.

9. The energy-saving soybean oil pressing system according to claim 8, characterized in that: The third heat exchange unit adopts a finned tube heat exchanger; the finned heat exchanger includes a heat exchange tube, and multiple heat exchange fins are provided along the outer periphery of the heat exchange tube. The heat exchange pipe is connected to the second water channel; the heat exchange fins of the third heat exchange unit are exposed inside the exhaust pipe.

10. An energy-saving soybean oil pressing system according to claim 1 or 2, characterized in that: Both the first air supply unit and the second air supply unit are fans.

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