TWI415934B - Method and device for extracting soybean oil - Google Patents

Abstract

A method in accordance with the present invention has following steps: preparing a mixture having a soybean material and an organic solution having a dielectric constant less than 1.89, sequentially applying microwave to aliquots of the mixture to obtain a first substance, sequentially applying microwave to aliquots of the first substance to obtain a second substance, obtaining a liquid phase of the substance and obtaining a soybean oil from the liquid phase. The present invention also relates to a device for practicing the method.

Description

Soybean oil extraction method and device thereof

The present invention relates to industrially large-scale extraction methods and apparatus, and more particularly to industrially large-scale extraction methods and apparatus for soybean oil.

Soybean oil is an important source of people's livelihood and industrial materials. In recent years, it has been one of the focuses of industrial R&D based on its application as an alternative energy source.

The existing soybean oil extraction methods include Soxhlet extraction, multi-stage contact extraction, extrusion extraction, supercritical fluid extraction, ultrasonic extraction, water bath heating extraction and batch microwave assisted extraction. Wait.

However, Soxhlet extraction is too time consuming and multistage contact extraction equipment is expensive. As for the extrusion extraction method, the supercritical flow extraction method and the ultrasonic extraction method, there are problems such as low extraction rate or high equipment cost. The aforementioned water bath heating extraction method and batch microwave assisted extraction method are not suitable for a continuous industrial process, although the equipment is low in cost and easy to handle. In other words, the existing soybean oil extraction methods have different disadvantages, respectively, so that it is not possible to provide a soybean oil extraction method which is simple and efficient and suitable for continuous industrial processes for industrial extraction.

In view of the shortcomings of the existing soybean oil extraction method, the object of the present invention is to provide a soybean oil extraction method which is simple and efficient and suitable for continuous industrial processes for industrial extraction in large quantities.

In order to achieve the above object, the technical means adopted by the present invention is that the soybean soybean oil extraction method comprises: preparing a mixed liquid comprising a soybean material and an organic solvent having a dielectric constant of less than 1.89; Applying microwaves to obtain the first material corresponding to the component until the first material corresponding to the total amount of the foregoing mixture is obtained; sequentially applying microwaves to the component of the first material to obtain a second corresponding to the component Sub-material until the second material corresponding to the total amount of the first material is obtained, the component of the first material is equal to the component of the mixture; and the second material is subjected to solid-liquid separation to obtain soybean oil and An extract of the aforementioned organic solvent; separating soybean oil from the aforementioned extract.

From the above, it can be seen that the method of the present invention enables the extraction of soybean oil by microwave in a continuous manner using a low-cost apparatus in a simple manner, thereby improving the disadvantages of the existing extraction method and achieving the object of the present invention.

The invention further relates to a soybean oil extraction device, comprising: a microwave reaction element; a reaction tube, which can be microwaved, disposed in the microwave reaction element, the reaction tube has two ends; a mixed liquid tank connected to the reaction tube One end; a material collection tank connected to the other end of the reaction tube; a feed valve disposed between the reaction tube and the mixed liquid tank; a discharge valve disposed between the reaction tube and the material collection tank; and creeping The pump is connected to the aforementioned mixed liquid tank and the material collecting tank.

The soybean oil extraction device is a method for carrying out the above-mentioned soybean oil extraction method, which belongs to a general invention concept and facilitates the efficient implementation of the aforementioned method.

The invention relates to a soybean oil extraction method, which comprises the following steps a to e.

a. A mixed liquid comprising a soybean material and an organic solvent having a dielectric constant of less than 1.89.

The organic solvent having a dielectric constant of less than 1.89 includes n-hexane, propane, and the like. In the present embodiment, soy flour is used as the aforementioned soybean material, and n-hexane is used as the aforementioned organic solvent. In a possible embodiment, the weight of the aforementioned organic solvent is 6 times that of the aforementioned soybean material.

b. sequentially applying microwaves to the components of the mixture to obtain a first material corresponding to the component until a first material corresponding to the total amount of the mixture is obtained.

The method of the present invention may first apply microwaves to one portion of the aforementioned mixed liquid, and then apply microwaves to the other portion, thereby sequentially applying microwaves to the entire mixed liquid. It is assumed that the foregoing mixed liquid has a total amount, and the total amount can be divided into several components, and the method of the present invention can apply microwaves to one component at a time. The component of the foregoing mixture is subjected to microwave treatment to form a first material corresponding to the component of the aforementioned mixture. After the microwave is applied to the mixed liquid as a whole as described above, the first material corresponding to the total amount of the foregoing mixed liquid can be obtained.

In a feasible embodiment, the total amount of the above mixture is 350 metric, and when the amount of microwave applied at one time is 60 metrics, a feasible component configuration is to mix the aforementioned total amount of 350 metric tons. The liquid was divided into 5 parts of 60 metric components and 1 part of 50 metric components, and the components of 60 mils of the mixed solution were processed in 5 steps, and the mixture of 50 ounces of the mixture was treated once. In particular, a 530 watt microwave can be applied for each of the foregoing components for 3 minutes.

Furthermore, when carrying out the method of the invention, it is usually carried out using a device constructed of tubular elements. The tubular element in the device will contain a portion of the mixture or first material, particularly at the beginning of use, a substantial portion of the mixture will be contained in the tubular member of the device. In addition, when processing the last portion of the mixture, the user may empty the first material contained in the tubular member of the device by rinsing or the like. Therefore, when the method of the present invention is carried out using the foregoing apparatus, the amount of the mixed liquid is not necessarily equal to the first time material corresponding to the component, so that the total amount of the mixed liquid and the first time corresponding to the total amount of the aforementioned mixed liquid The materials are not necessarily equal, but the difference can be grasped by the tubular component volume of the computing device. Therefore, it is also possible to adjust the microwave power or microwave time in accordance with the components of different mixed liquids.

The foregoing apparatus based on the method of the present invention itself results in a condition in which the amount of the mixed liquid is not necessarily equal to the first amount of material corresponding to the component, which is particularly common in industrial processes. Since those having ordinary knowledge in the field to which the present invention pertains can grasp such conditions and the consequent possible errors, it is also possible to make appropriate adjustments by themselves, and the relevant technical contents are not described herein.

Referring to Fig. 1, the method of the present invention firstly performs a feeding process after the start to allow the components of the mixed liquid to be in a microwave-capable state, and then applies microwaves to the components of the mixed liquid to perform a microwave extraction process. After a sufficient amount of microwave is applied to the component of the mixture, a discharge process is performed to collect the first material corresponding to the component of the mixture. If the mixture is still not applied to the microwave, return to the feed stroke so that the other mixture is subjected to a sufficient amount of microwave during the microwave extraction process and the first material is collected during the discharge stroke. Thus, in a sequential manner, a sufficient amount of microwaves can be continuously applied to the mixed liquid as a whole, and the first material corresponding to the total amount of the foregoing mixed liquid is collected.

A feasible embodiment is that the components of the mixed liquid are sequentially placed in a reaction tube which can accommodate the component, and microwaves are applied to the mixed liquid component of the reaction tube, to obtain corresponding The first material of the component until the first material corresponding to the total amount of the aforementioned mixture is obtained.

c. sequentially applying microwaves to the component of the first material to obtain a second material corresponding to the component until a second material corresponding to the total amount of the first material is obtained, and the component of the first material is equal to The component of the aforementioned mixture.

The components of the first material described above are first placed in the aforementioned reaction tube, and microwaves are applied. The aforementioned reaction tube is the aforementioned reaction tube for containing the component of the aforementioned mixed liquid. That is, when the first material corresponding to the total amount of the foregoing mixed liquid is obtained, the mixed liquid has been completely processed, so that no other components of the mixed liquid need to be separated into the reaction tube to receive the microwave. . Therefore, the aforementioned reaction tube can be used to apply microwaves to the components of the aforementioned first material.

Please refer to FIG. 1 again. For the first material mentioned above, the feeding process, the microwave extraction process and the discharging process of the mixed liquid are also used to continuously apply a sufficient amount of microwaves to the first material in whole fractions, and A second material corresponding to the first amount of the first material is collected.

Therefore, a feasible embodiment is that the components of the first material are sequentially placed in the reaction tube, and the microwave is applied to the first material component of the reaction tube to obtain a corresponding The second material of the component until the second material corresponding to the total amount of the first material is obtained, and the component of the first material is equal to the component of the mixture.

Further, when the method of the present invention is carried out by the above-mentioned reaction tube or a device composed of a tubular member, it is also possible that the tubular member of the device itself based on the method for carrying out the present invention can accommodate a first quantitative amount as described above. The characteristics of the material cause the component of the first material to be not necessarily equal to the second material corresponding to the component. Those having ordinary knowledge in the field to which the present invention pertains can grasp such common conditions in the industrial process and the consequent possible errors, and can make appropriate adjustments by themselves, and the relevant technical contents are not described herein.

d. Perform solid-liquid separation on the second material to obtain an extract containing soybean oil and the aforementioned organic solvent.

In a specific embodiment of the present invention, the second material may be subjected to solid-liquid separation by a vacuum filtration method to obtain an extract containing soybean oil and the aforementioned organic solvent. Preferably, a vacuum filtration system such as GAST MANUFACTURING Inc., 0211, U.S.A. is employed as a technical means for solid-liquid separation by vacuum filtration.

e. Soybean oil is separated from the above extract.

In a specific embodiment of the present invention, the soybean oil may be separated from the foregoing extract by using a reduced pressure concentrate. Preferably, a vacuum concentrator such as Tokyo Rikakikai Co., Ltd., EYELA, N-1000, Japan is used as a technical means for separating soybean oil from the above extract by a vacuum concentration method.

As apparent from the above, the method of the present invention does not require cooling, so that it is possible to carry out microwave extraction continuously and efficiently without requiring additional cooling time.

Referring to FIG. 2, the present invention further provides a soybean oil extraction device. The soybean oil extraction device comprises a microwave reactor unit 30, a Reacting tube 20, a Reactant reservoir 10, a Product collector 40, and a Feeding valve. 51. Discharging valve 52 and Peristaltic pump 60. The apparatus can be used to practice the method of the invention for efficient continuous microwave extraction of soybean oil.

The aforementioned microwave reaction element 30 can apply microwaves to the components of the aforementioned mixed liquid. In a possible aspect of the invention, a microwave oven capable of outputting a specific power microwave such as 530 watts or a microwave oven capable of adjusting microwave power may be employed. Specifically, a domestic microwave oven such as IMARFLEX, MO-092V, Japan can be employed as the aforementioned microwave reaction element 30.

The reaction tube 20 can be microwaved and disposed in the microwave reaction element 30, and the reaction tube 20 has two ends. Referring to FIG. 3, a specific embodiment of the foregoing reaction tube 20 is formed into a curved tube having a volume of 60 metric, and the reaction tube 20 has an inner wall having a surface area of 46,000 square millimeters. By using the reaction tube 20 as shown in this embodiment, the surface area of up to 46,000 square mm can be utilized to enhance the effect of the extraction.

The mixed liquid tank 10 communicates with one end of the reaction tube 20, and the material collecting tank 40 communicates with the other end of the reaction tube 20. Thereby, the aforementioned mixed liquid tank 10, the aforementioned reaction tube 20, and the aforementioned material collecting tank 40 are connected to each other to form a continuously operated piping.

The feed valve 51 is disposed between the reaction tube 20 and the mixed liquid tank 10, and the discharge valve 52 is disposed between the reaction tube 20 and the material collection tank 40.

The peristaltic pump 60 communicates with the mixed liquid tank 10 and the material collecting tank 40, whereby the pipeline formed by the communication of the mixed liquid tank 10, the reaction tube 20 and the material collecting tank 40 can form a loop, thereby enabling the material to be The collecting tank 40 returns the first material in the material collecting tank 40 to the mixed liquid tank 10 by the peristaltic pump 60 to perform microwave extraction on the first material to obtain the second material.

Referring again to FIG. 2, the apparatus of the present invention may further include an aerator 70. The aerator 70 is in communication with the feed valve 51 and the mixing tank 10 and is in communication with the discharge valve 52 and the material collection tank 40. Thereby, the aerator 70 can be used to aerate between the feed valve 51 and the mixed liquid tank 10 when the feed valve 51 is opened, to prevent the mixture or the first material from being precipitated, and to prevent clogging. The problem. Similarly, the aerator 70 can also be used to aerate between the discharge valve 52 and the material collection tank 40 when the discharge valve 52 is opened to avoid the first material or the second material precipitation. To prevent the occurrence of blockage problems.

Preferably, the apparatus of the present invention further includes a central control unit 80. The central controller 80 is connected to the feed valve 51, the discharge valve 52, the microwave reaction element 30, the peristaltic pump 60 and the aerator 70, so that the central controller 80 can be used to open and close the feed valve 51 and the outlet. The valve 52, the microwave reaction element 30, the peristaltic pump 60 and the aerator 70 are provided. Thereby, the invention can be controlled in an automated manner to control the continuous microwave extraction, which not only reduces the involvement of manpower, but also improves the accuracy, thereby providing industrial improvement and enhancement in terms of yield and cost. effect.

[Example 1]

In the first embodiment of the present invention, the aforementioned soybean oil extraction method is carried out by using the aforementioned soybean oil extraction device. The present embodiments are intended to illustrate the possible embodiments of the present invention and are not intended to limit the scope of the present invention.

Referring to FIG. 1 and FIG. 2, first, a total of 350 metrics of the mixed liquid is supplied to the mixed liquid tank 10, and the temperature of the mixed liquid tank 10 is maintained by a heating or temperature control device such as a heating plate. In order to allow the mixed solution accommodated in the aforementioned mixed liquid tank 10 to be maintained in a state suitable for the reaction. The foregoing mixture included 300 metric tons of n-hexane and 50 metric tons of soy flour, and the reaction tube 20 used in the present embodiment had a volume of 60 metric.

The feeding process is first carried out. The discharge valve 52 is closed, the feed valve 51 is opened, 60 parts of the mixed liquid component is flown into the reaction tube 20, and the feed valve 51 is closed, and the mixed liquid component is accommodated in the reaction tube 20. If the aerator 70 is used in the embodiment, when the feed valve 51 is opened, the aerator 70 is simultaneously turned on to aerate between the feed valve 51 and the mixed liquid tank 10 to avoid the aforementioned mixing. The liquid is precipitated to prevent clogging. The aerator 70 is also closed when the feed valve 51 is closed.

The microwave extraction process is then carried out. The microwave reaction element 30 is turned on, and a microwave of 530 watts is applied to the mixed liquid component accommodated in the reaction tube 20 for 3 minutes, so that the component of the mixed liquid is formed into the first material subjected to microwave treatment.

Then the discharge process is carried out. The aforementioned discharge valve 52 is opened to allow the aforementioned first material to flow into the material collection tank 40. If the aerator 70 is used in the embodiment, when the discharge valve 52 is opened, the aerator 70 is simultaneously opened to aerate between the discharge valve 52 and the material collection tank 40 to avoid the foregoing The material is precipitated once to prevent clogging. The aerator 70 is also closed when the discharge valve 52 is closed.

By repeating the foregoing feeding process, the microwave extraction process, and the discharging process, the microwave may be sequentially applied to the component of the mixture to obtain the first material corresponding to the component until the total amount corresponding to the total amount of the mixture is obtained. One material at a time. If the aerator 70 is not used for aeration in the above-mentioned feeding process and discharge process, some of the first materials may remain in the aforementioned soybean oil extraction device, but this condition is a common condition in industrial processes. The person having ordinary knowledge in the field to which the present invention pertains can grasp the situation, and can understand the corresponding relationship between the total amount of the mixed liquid and the first material corresponding to the total amount of the foregoing mixed liquid.

After the first material corresponding to the total amount of the foregoing mixed liquid is obtained, since the mixed solution is not present in the mixed liquid tank 10, the first material corresponding to the total amount of the mixed liquid can be self-material by the peristaltic pump 60. The collecting tank 40 is drawn to the aforementioned mixed liquid tank 10 to apply microwaves to the first material using the aforementioned reaction tube 20.

Then, the first material extracted to the foregoing mixed liquid tank 10 is subjected to the feeding process, the microwave extraction process and the discharging process as described above, whereby the total amount of the first material is collected in the material collecting tank 40. The second material. At this time, the second material contains soybean powder as a soybean material and an organic solvent n-hexane. The solid portion of the soy flour is still present in the second material, but the fat portion of the soy flour, that is, soybean oil, is already dissolved in n-hexane.

Further, the second filtration material was subjected to solid-liquid separation using a vacuum filtration system of GAST MANUFACTURING Inc., 0211, U.S.A. to obtain an extraction liquid. The extract contains soybean oil and the aforementioned organic solvent, that is, the above-mentioned n-hexane in which soybean oil is dissolved.

In order to separate soybean oil from the above extract, in the present example, soybean oil was separated from the above extract by a vacuum concentrator of Tokyo Rikakikai Co., Ltd., EYELA, N-1000, Japan.

It can be seen from the above that the method of the present invention can carry out microwave extraction continuously and efficiently, and the continuous operation method which is efficiently realized by low-cost equipment is suitable for industrial processes, and is used for industrial extraction of soybean oil; The device of the present invention can be effectively used to carry out the aforementioned method.

10. . . Mixed tank

20. . . Reaction tube

30. . . Microwave response element

40. . . Material collection tank

51. . . Feed valve

52. . . Discharge valve

60. . . Peristaltic pump

70. . . Aerator

80. . . Central controller

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a flow chart showing the method for extracting soybean oil according to the present invention.

Figure 2 is a schematic illustration of the soy bean oil extraction apparatus of the present invention.

Figure 3 is a perspective view of a reaction tube used in the present invention.

Claims (10)

A method for extracting soybean oil, comprising: preparing a mixed liquid comprising a soybean material and an organic solvent having a dielectric constant of less than 1.89; sequentially applying microwaves to the component of the mixture to obtain a first time corresponding to the component Material until the first material corresponding to the total amount of the foregoing mixture is obtained; the microwave is applied to the component of the first material to obtain the second material corresponding to the component until the first material corresponding to the first time is obtained The second material of the quantity, the component of the first material is equal to the component of the mixture; the second material is subjected to solid-liquid separation to obtain an extract containing soybean oil and the organic solvent; and is separated from the extract Out of soybean oil. According to the method of claim 1, the components of the mixture are sequentially placed in a reaction tube which can accommodate the component, and the microwave is applied to the mixture of the mixture in the reaction tube. Obtaining the first material corresponding to the component until the first material corresponding to the total amount of the foregoing mixture is obtained; and sequentially dividing the component of the first material into the reaction tube, and then placing the fraction Applying microwaves to the first material component of the reaction tube to obtain a second material corresponding to the component until a second material corresponding to the total amount of the first material is obtained, and the component of the first material is equal to The component of the aforementioned mixture. The method according to claim 2, wherein the soybean material is soybean powder; the organic solvent is n-hexane; and the weight of the organic solvent is 6 times that of the soybean material. The method of claim 3, wherein the composition of the mixed liquid is about 60 metric; the component of the first material is about 60 metric; the reaction tube has an inner wall, and the surface area of the inner wall of the reaction tube Approximately 46,000 square millimeters; a microwave having a power of about 530 watts is applied to the component of the foregoing mixture; and a microwave having a power of about 530 watts is applied to the component of the first material. The method of claim 4, wherein the reaction tube has two ends, one end of which is connected to a mixed liquid tank, and the other end is connected to a material collecting tank; and a reaction between the reaction tube and the mixed liquid tank is provided. a feed valve, an discharge valve is disposed between the reaction tube and the material collection tank; the mixed liquid is accommodated in the mixed liquid tank, and then the discharge valve is closed and the feed valve is opened to make the mixed liquid After the component is placed in the reaction tube, the feed valve is closed; the first material of the microwave is collected in the material collection tank by opening the discharge valve; the material collection tank is accommodated accordingly. In the first material of the total amount of the mixed liquid, the first material corresponding to the total amount of the foregoing mixed liquid is extracted into the mixed liquid tank by a peristaltic pump connected to the mixed liquid tank and the material collecting tank; Closing the aforementioned discharge valve and then opening the feed valve, so that the first material component is placed after the reaction tube, the feed valve is closed; by opening the aforementioned discharge valve The component of the second material after the microwave is applied by the door is collected in the aforementioned material collection tank. The method of claim 5, wherein when the feed valve is opened, aeration is performed between the feed valve and the mixed liquid tank; and when the discharge valve is opened, the discharge valve is Aeration is performed with the aforementioned material collection tank. The method of claim 6, wherein the second material is subjected to solid-liquid separation by vacuum filtration to obtain an extract containing soybean oil and the organic solvent; and the soybean oil is extracted from the soybean by a vacuum concentration method. Separated from the liquid. A soybean oil extraction device comprises: a microwave reaction element; a reaction tube, which can be microwaved, disposed in the microwave reaction element, the reaction tube has two ends; a mixed liquid tank connected to one end of the reaction tube; material collection a tank communicating with the other end of the reaction tube; a feed valve disposed between the reaction tube and the mixed liquid tank; a discharge valve disposed between the reaction tube and the material collection tank; and a peristaltic pump connecting the foregoing Mixing tank and material collection tank. The device of claim 8, further comprising: an aerator, being aerotropically connected between the feed valve and the mixed liquid tank, and being aerotropically connected to the discharge valve and Between the aforementioned material collection tanks. The device of claim 9, further comprising: a central controller for opening and closing the feed valve, the discharge valve, the microwave reaction element, the peristaltic pump and the aerator.