Method and apparatus for obtaining oil from seeds

Abstract

The invention relates to a method and a device for obtaining oil from seeds, according to which at least one of the parameters of the moisture content, the fiber content and / or the oil content of the press mass is measured and evaluated continuously, thereby enabling the continuous adjustment of at least one of the parameters of the moisture content of the press mass, the rotational speed of the press drive and the amount of the supplied extraction agent. The implementation of the technical and methodical features of the device and the method of the invention can increase the oil yield, reduce fluctuations in the oil yield and save energy.

Description

TECHNICAL FIELD

[0001] The invention relates to a method for obtaining oil from oil-containing seeds by pressing, wherein the yield of the extraction process is improved, optionally in addition to the mechanical pressing of the oil, by adding carbon dioxide as an extraction agent.

[0002] Furthermore, the invention also relates to an apparatus for obtaining oil from oil-containing seeds in the sense of an oil press, wherein the yield of the extraction process is improved, optionally in addition to the mechanical pressing of the oil, by adding carbon dioxide as an extraction agent. BACKGROUND

[0003] Such a method and apparatus are used to press oil from oil-containing seeds. For this purpose, the press mass is supplied to a pressing apparatus, for example configured as a screw press, in which the oil is pressed from the press mass by mechanical pressing, thereby separating the solid and liquid constituents of the press mass from one another.

[0004] In order to support the pressing process or in order to increase the oil yield, it has been disclosed to mix the press mass with an extraction agent, wherein a significant reduction in viscosity (flowability) can be achieved by the dissolution of the extraction agent in the extract (oil), so that the extract can more easily flow out.

[0005] For example, carbon dioxide can be used as such an extraction agent, which is mixed with the press mass in the form of supercritical carbon dioxide, in which the oily extract is then dissolved at very high pressure. Here, physically, supercritical describes the state of matter of carbon dioxide in the transition from the gaseous phase to the liquid phase. The extract dissolved in the supercritical carbon dioxide is obtained in pure form after discharge from the press by evaporation of the carbon dioxide. The evaporated carbon dioxide is either discharged into the atmosphere or recompressed and reused.

[0006] The provision and operation of supercritical carbon dioxide and the required apparatus configuration for operating this extraction agent in relatively small quantities are taught, for example, in EP 17117014 B1.

[0007] A method and apparatus of the type described above are proposed in DE 10 2007 014 775 A1, which improve the production quality of the obtained oil, especially for the production of edible oil, which is achieved, inter alia, by limiting the temperature of the extract to a maximum of 60°C during the entire extraction process.

[0008] The oil yield of the entire extraction process is independent of the addition of the extraction agent and is mainly dependent on the moisture and fiber content of the supplied press mass.

[0009] In order to optimize the oil yield, it is necessary to determine the moisture and fiber content of the supplied press mass and to adapt the extraction process accordingly.

[0010] Herein, the prior art is that a sample is extracted from the pressed mass in defined time intervals, which is analyzed in terms of moisture and fiber content in fixed laboratory equipment. Then, based on the analysis results, corresponding adjustment values are manually pre-set in the process control system, for example new adjustment values for the adjustment valves.

[0011] According to the prior art, the oil yield of about 52% to 55% in the pre-pressing and of about 84% ± 8% in the re-pressing with the above-mentioned method and equipment meets the standards. SUMMARY

[0012] It is an object of the present application to provide a device for obtaining oil from seeds, which leads to an improved oil yield.

[0013] According to the present application, this object is solved by a device for obtaining oil from seeds according to claim 1.

[0014] It is a further object of the present application to provide a method for obtaining oil from seeds, which leads to an improved oil yield.

[0015] According to the present application, this object is solved by a method according to claim 9.

[0016] It is a further object of the present application to provide a device for obtaining oil from seeds, which leads to an improved energy efficiency.

[0017] According to the present application, this object is solved by a device for obtaining oil from seeds according to claim 1.

[0018] It is a further object of the present application to provide a method for obtaining oil from seeds, which leads to an improved energy efficiency.

[0019] According to the present application, this object is solved by a method according to claim 9.

[0020] The dependent claims disclose advantageous embodiments of the inventive device and the inventive method.

[0021] The features of the inventive device for obtaining oil from seeds disclosed below are not only part of the application individually, but also in all possible combinations.

[0022] The inventive device for obtaining oil from seeds has at least one mechanical pressing unit, into which seeds, for example in the form of a fleece or already as a press cake, can be fed in the course of the re-pressing.

[0023] In a preferred embodiment of the application, the mechanical pressing unit is configured as a screw press having a pressing basket in which a screw is rotatably supported. Here, the screw is driven by means of a pressing drive.

[0024] In a particularly preferred embodiment of the application, the pressing drive is designed so that the rotational speed can be varied in the course of the operating process. If the pressing drive is designed as an electric motor, the rotational speed variation of the pressing drive can be achieved by means of a frequency converter, for example.

[0025] The pressing basket is permeable to the pressing oil, so that the pressing oil flows out of the pressing basket over the length of the pressing basket, while the pressing mass is conveyed through the entire pressing basket by means of the screw. At the end of the pressing basket, the mechanical pressing device has an outlet for the press cake, which consists essentially of the solid components of the pressing mass and the remaining oil components.

[0026] The apparatus for obtaining oil from seeds according to the application can have a plurality of mechanical pressing units, which can be arranged to work one after the other or in parallel.

[0027] In an embodiment of the application, a metering device is provided before at least one mechanical pressing unit, which is designed, for example, as a metering screw with which the quantity of pressing mass supplied to the associated mechanical pressing unit can be controlled.

[0028] In order to adjust the moisture of the pressing mass supplied, the apparatus for obtaining oil from seeds according to the application has at least one conditioner.

[0029] By means of the at least one conditioner, the pressing mass can be heated to a predetermined temperature and moisture can be extracted from the pressing mass.

[0030] In a preferred embodiment of the application, the at least one conditioner is designed as a pipe bundle conditioner, a roller conditioner or a heating disc, with which the pressing mass can be treated by supplying steam, hot water or condensate.

[0031] Here, the roller conditioner is a substantially horizontally extending cylindrical conditioner having a double-shell for indirect heating of the pressing mass by means of saturated steam. Here, a very uniform treatment can be achieved by means of the intensive mixing of the pressing mass by means of the stirring mechanism of the roller conditioner, which is adapted for indirect heating using saturated steam. A very good drying effect can be achieved by means of direct steam discharge.

[0032] The bundle conditioning device is also a substantially horizontally extending cylindrical conditioner with steam heating tube bundles arranged in the middle. The entire drum is rotatable. In order to achieve a uniform treatment of the press mass, the rotation and the heating tube bundles can be individually adjusted over the entire length of the bundle conditioning device. A very good drying result can be achieved by direct steam discharge.

[0033] In a preferred embodiment of the application, the humidity and the temperature of the press mass, which can be adjusted by means of the conditioner, can be adapted to the specific requirements of various types of press mass, depending on the press mass to be processed.

[0034] In an embodiment of the application, the humidity can be adjusted in the range of approximately 1 % to 5 %, and the temperature can be adjusted in the range of 85 °C to 120 °C.

[0035] In an embodiment of the application, for press mass provided by, for example, rapeseed, a humidity of approximately 3 % and a temperature of approximately 104 °C can be achieved by means of the conditioner.

[0036] At least one first measuring device for acquiring the temperature and / or the humidity and / or the fiber content and / or the oil content of the press mass is arranged in the region of the at least one conditioner.

[0037] In a particularly preferred embodiment of the application, the first measuring device has at least one NIR (near infrared) based measuring mechanism with which near infrared (approximately 900 nm to 1700 nm wavelength) light can be emitted. Furthermore, the near infrared based measuring mechanism has a receiving unit with which, depending on the absorption of the emitted infrared light by the press mass, the humidity, the oil content, the protein content and / or the phosphatide content and the fiber content of the press mass can be determined, inter alia, by spectroscopic analysis.

[0038] In another preferred embodiment of the application, the near infrared based measuring mechanism is designed as a near infrared online technology. Near infrared online technology as referred to herein means that the wavelength-dependent absorption of the infrared light reflected by the press mass is measured in the measurement spectrum. The advantage of using reflected infrared light is that the near infrared based measuring mechanism only needs to be arranged on one side of the process, so that a compact design can be achieved. Thus, the measurement can also be carried out in the case of bulk heights and non-transparent media.

[0039] Furthermore, in the near-infrared online technology, the light reflected by the sample is first parallelized, so that no time loss occurs during the measurement. In comparison with conventional near-infrared measuring devices, with the aid of the near-infrared online technology, the sample can be measured in about 20 milliseconds instead of 20 to 30 seconds. The near-infrared measuring device in the near-infrared online technology has at least one diode array and a large measuring window (in one embodiment, about 4 cm in diameter), so that the measurement is carried out on a relatively wide cross section of the sample. Thus, outliers in the measured values, which can easily be caused by individual kernels, can be essentially ruled out.

[0040] In one embodiment of the application, the near-infrared-based measuring device can be incorporated on the conveying device, which conveys the press mass to the conditioner or from the conditioner to the mechanical press unit, or in the pipe with a separate sight glass. Since the near-infrared-based measuring device is very close to the process, the immersion depth is about 5 mm, so that not only the shell or outer layer of the press mass, but also the inner layer can be obtained, so that an accurate analysis can be carried out.

[0041] In one embodiment of the application, the detection of at least the moisture content, the fiber content and the oil content is carried out using another non-near-infrared technology.

[0042] In one embodiment of the application, the first measuring device has at least one temperature sensor, which is designed, for example, as a PT 100 sensor.

[0043] In a preferred embodiment of the application, the first measuring device has at least one near-infrared-based measuring device for detecting the moisture content and / or the oil content and / or the protein content and / or the phospholipid content and / or the fiber content and at least one temperature sensor.

[0044] In a particularly preferred variant of the above-mentioned embodiment, the near-infrared-based measuring device is designed in near-infrared online technology.

[0045] In one embodiment of the application, the conditioner has at least one steam conditioning valve with the aid of which the supply of hot steam to the conditioner can be adjusted.

[0046] To this end, the steam conditioning valve is advantageously equipped with a servo drive and is designed, for example, as a rotary cone valve, a stop valve, a butterfly valve, a ball valve, a membrane valve or a slide valve.

[0047] In a preferred embodiment of the application, the amount of thermal energy supplied to the press mass in the conditioner can be precisely adapted to the actual requirements in chronological order on the basis of the measured values detected with the aid of the first measuring device, so that it is possible to avoid supplying more thermal energy than is required, so that energy can be saved.

[0048] In an advantageous embodiment of the application, at least one supply device for an extractant is provided in the region of at least one mechanical press of the apparatus for obtaining oil from seeds, with which the extractant can be introduced into the press chamber of the mechanical press.

[0049] In an embodiment of the application, the supply device for an extractant has a flow regulating device for regulating the amount of extractant supplied.

[0050] In an embodiment of the application, the flow regulating device is designed as a regulating valve, which can be designed, for example, as a rotary cone valve, a stop valve, a butterfly valve, a ball valve, a membrane valve or a slide valve, and has a servo motor.

[0051] In a preferred embodiment of the application, the supply device for an extractant is designed as a supply device for carbon dioxide, wherein the amount of carbon dioxide injected into the press chamber can be controlled by a flow regulating device designed as a gas regulating valve.

[0052] In another embodiment of the application, the apparatus for obtaining oil from seeds has at least one pressure sensor.

[0053] In another embodiment of the application, the apparatus for obtaining oil from seeds has at least one mass and / or volume flow measuring device.

[0054] In an advantageous embodiment of the application, the at least one pressure sensor and / or the at least one mass and / or volume flow measuring device can be used to regulate the steam supplied to the at least one regulator and / or to regulate the amount of extractant supplied.

[0055] In an embodiment of the application, the apparatus for obtaining oil from seeds has a second measuring device, which is arranged downstream of the at least one mechanical pressing device in the conveying direction, so that the oil content of the pressed material can be detected at least after pressing by means of the at least one mechanical pressing device using the second measuring device.

[0056] To this end, in an advantageous embodiment of the application, the second measuring device has at least one near-infrared-based measuring mechanism.

[0057] In a particularly preferred embodiment of the application, the second measuring device has at least one near-infrared-based measuring mechanism in near-infrared online technology.

[0058] According to the application, the apparatus for obtaining oil from seeds has at least one evaluation and control device with which the measuring signals of the first and / or second measuring device can be evaluated. On the basis of the measurement data, the heat supply to at least one conditioner (for example by actuating at least one conditioning valve) and / or the rotational speed of the press drive of the at least one mechanical pressing device and / or the amount of extractant supplied by means of the at least one supply device for extractant (for example by actuating at least one gas conditioning valve) can be controlled with the aid of the at least one evaluation and control unit.

[0059] In a preferred embodiment of the application, the evaluation and control unit is designed to detect the measurement values of the first and / or second measuring device continuously, so that the control variables can be adjusted quickly and continuously.

[0060] In an advantageous embodiment of the apparatus for obtaining oil from seeds according to the application, the apparatus is designed for pre-pressing and re-pressing, wherein an oil yield of approximately 54% to 59% is achieved with the pre-pressing and an oil yield of approximately 87% + / - 3% is achieved with the re-pressing.

[0061] In summary, the apparatus for obtaining oil from seeds according to the application comprises at least the following variants:

[0062] including a variant with one single stage or at least two stages, wherein at least one conditioner and a mechanical pressing device downstream thereof and at least one conveying unit for conveying the press cake from the conditioner to the mechanical pressing device are provided in each stage.

[0063] Furthermore, a variant with a device for humidity adjustment of the press cake in the conditioner and a structural assembly configured according to the preceding description is also included.

[0064] Furthermore, a variant with carbon dioxide assisted pressing in at least one stage is also included, wherein in particular carbon dioxide should be used as extractant.

[0065] Furthermore, all implementable combinations resulting from these variants are included, in particular a variant with two stages, in at least one of which the press cake is humidity adjusted in at least one conditioner and in at least one of which carbon dioxide assisted pressing is carried out.

[0066] The features of the method for obtaining oil from seeds according to the application disclosed below form part of the application not only individually but also in all implementable combinations.

[0067] The method for obtaining oil from seeds according to the invention is characterized in particular in that at least one of the parameters moisture, fiber content and oil content of the press mass is continuously measured and evaluated, and on the basis of this at least the temperature and the moisture of the press mass are continuously adjusted in accordance with predetermined set values at least before the press mass is supplied to the mechanical pressing device, or the rotational speed of the press drive is continuously adjusted in terms of the fiber content of the press mass, or the supply of extraction agent is continuously adjusted in accordance with the oil content of the press mass.

[0068] The method for obtaining oil from seeds according to the invention comprises at least the following method steps:

[0069] 1. The press mass (seeds or press cake from a previously carried out pressing process) is supplied to at least one conditioner,

[0070] 2. The press mass is conditioned by means of the conditioner,

[0071] 3. The moisture and / or the fiber content and / or the oil content of the conditioned press mass is continuously measured,

[0072] 4. The measurement data is continuously evaluated by means of at least one evaluation and control unit,

[0073] 5. The conditioning is continuously controlled in order to adjust the moisture of the press mass to a predetermined set value, and / or the rotational speed of the press drive is continuously controlled and / or the amount of extraction agent supplied to the press mass in the press chamber of the mechanical pressing device is continuously controlled,

[0074] 6. The conditioned press mass is delivered to the mechanical pressing device,

[0075] 7. The press mass is pressed by means of the mechanical pressing device for separating the contained oil from the solid constituents.

[0076] In a preferred embodiment of the method according to the invention, the continuous measurement of the moisture and / or the fiber content and / or the oil content of the press mass is carried out by means of near-infrared-based measuring means.

[0077] In a particularly preferred embodiment of the method according to the invention, the continuous measurement of the moisture and / or the fiber content and / or the oil content of the press mass is carried out by means of near-infrared-based measuring means in near-infrared online technology.

[0078] During the conditioning of the press mass, the press mass is subjected to a thermal treatment which leads to a spontaneous evaporation of water in the cell structure of the seeds and thus to a reduction of the surface moisture. Here, the conditioning serves to adjust the press mass to predetermined moisture and temperature. An optimum moisture in the press mass creates a high efficiency in the subsequent mechanical pressing process of the press mass.

[0079] In one embodiment of the method according to the application, the conditioning is carried out using heat (steam / hot water / condensate), for example in a tube bundle conditioner, a roller conditioner or a hot pot.

[0080] In one embodiment of the application, the moisture is measured after the conditioner and the heat to be supplied to the conditioner is adjusted on the basis of a comparison of the measured value with a predetermined setpoint value.

[0081] In a two-stage mechanical pressing system or in a two-stage method according to the application, the press cake from the pre-pressing is conditioned again, since the optimum moisture in the press cake promotes a high efficiency in the second pressing process.

[0082] In one embodiment of the application, the adjustment of the moisture of the press mass is achieved by controlled supply of hot steam to the conditioner.

[0083] In one embodiment of the application, the mechanical pressing of the press mass is carried out with the aid of an extraction agent. For this purpose, the extraction agent is injected into the press chamber of the at least one pressing device.

[0084] In one preferred embodiment of the application, carbon dioxide is used as extraction agent.

[0085] In one particularly preferred embodiment of the application, the amount of extraction agent injected into the press chamber can be adjusted by means of an evaluation and control unit.

[0086] The amount of oil measured in the seed or press cake (two-stage method) in front of the pressing device determines here the pressure and / or the amount of supercritical carbon dioxide injected into the pressing device as extraction agent.

[0087] In one preferred embodiment of the method according to the application, the flow rate and / or the pressure of the carbon dioxide to be injected is adjusted by means of a regulating valve by measuring the oil content (measured value) in front of the pressing device.

[0088] In one embodiment of the application, a near-infrared-based measuring mechanism is used for continuous measurement of the moisture of the press mass, for measurement of the fiber content of the press mass and for measurement of the oil content of the press mass.

[0089] In one embodiment of the method according to the application, the control of the rotational speed of the pressing drive of the mechanical pressing device is carried out on the basis of an evaluation of the measured value of the fiber content of the press mass.

[0090] Since the fiber content of the press mass fluctuates and the fiber content has an influence on the mechanical pressing of the oil from the press mass, in one advantageous embodiment of the application, the rotational speed of the pressing drive is changed when the fiber content of the press mass changes, in order to achieve a high efficiency in the pressing process.

[0091] In one embodiment of the application, the fiber content of the pressed mass is already determined before the pressing unit.

[0092] Such a speed adjustment can be realized both in a single-stage process and in a two- or multi-stage process.

[0093] The continuous measurement of the fiber content and the moisture of the pressed mass and the adjustment of the speed and / or the moisture on this basis has the advantage that new control values for the regulating valve and / or the speed of the press can be set within a very short time interval, so that an increase in the oil yield of up to 5% can be achieved, and the fluctuations are generally greatly reduced by the continuous adjustment, so that the oil yield is increased. Furthermore, the moisture adjustment leads to an optimal utilization of heat (steam, hot water, condensate), so that energy savings can be achieved.

[0094] In the process according to the application, the continuous measurement of the oil content of the pressed mass in the pressing with the aid of an extractant, in particular carbon dioxide, provides the advantage that new control values for the regulating valve can be set within a very short time interval, so that the amount of extractant, in particular supercritical carbon dioxide, supplied is always kept in the optimum ratio to the oil quantity, so that the oil yield is increased, the fluctuation amplitude of the oil yield is reduced and / or the extractant consumption is reduced.

[0095] With the process according to the application for obtaining oil from seeds, an oil yield of 54% to 59% can be achieved in the pre-pressing and an oil yield of 87% + / - 3% can be achieved in the re-pressing.

[0096] Furthermore, the following process parameters are used in an embodiment of the process according to the application:

[0097] The typical pressure range of the extractant is defined by the fact that the extractant is supplied to the pressed mass in the pressing unit at a pressure of approximately 100 to 200 bar.

[0098] Due to the frictional energy generated by the mechanical pressing, a temperature range is usually produced, in which the pressing of the extract after the supply of the extractant takes place at a temperature of approximately 40 to 45°C.

[0099] With regard to the pressing pressure, it is considered that a mechanical pressing pressure in the range of 250 bar is produced.

[0100] The use of near-infrared-based measurements of the moisture and / or the fiber content and / or the oil content, in particular near-infrared online technology, thus allows, compared to the prior art, a continuous monitoring of the above-mentioned parameters and a rapid adjustment of the process parameters in order to continuously ensure a very small fluctuation range around the predetermined setpoint values only. The wet-chemical analysis processes required for the periodic detection of the relevant measured variables in the prior art only require a calibration of the near-infrared system at the start and a recalibration during operation. BRIEF DESCRIPTION OF DRAWINGS

[0101] An exemplary embodiment of the method according to the application and of the apparatus according to the application is shown schematically in the drawing. In the drawing:

[0102] Figure 1 : shows a schematic block diagram of the apparatus according to the application for obtaining oil from seeds;

[0103] Figure 2 : shows a schematic diagram of the method according to the application for obtaining oil from seeds. DETAILED DESCRIPTION

[0104] Figure 1 A schematic block diagram of one embodiment of the apparatus (1) according to the application for obtaining oil from seeds is shown. The apparatus (1) for obtaining oil from seeds has a conditioner (2) with which the incoming seeds or press cake can be conditioned in terms of the moisture and temperature of the press mass. To this end, the apparatus (1) for obtaining oil from seeds has a steam adjustment device (3) with which a controlled amount of hot steam can be supplied to the conditioner (2). The temperature of the steam or residual air escaping from the conditioner (2) can be measured by means of a temperature sensor (4). The data of this temperature sensor (4) can be transmitted to an evaluation and control unit (5) for evaluation.

[0105] A conveying device (6) is connected to the conditioner (2) with which the conditioned press mass can be conveyed towards a mechanical pressing device (11). In the region of this conveying device (6) a first measuring point (7) is provided which has measuring means for measuring the moisture, the fibre content and the oil content of the press mass.

[0106] Preferably, the first measuring point (7) for this has at least one NIR-based measuring mechanism which is particularly preferably implemented in NIR online technology.

[0107] In the shown embodiment of the apparatus (1) according to the application for obtaining oil from seeds, a metering device (10) is provided in front of the mechanical pressing device (11) with which the amount of press mass supplied to the mechanical pressing device (11) can be adjusted.

[0108] Furthermore, the apparatus (1) for obtaining oil from seeds has a supply device (12) for an extraction agent with which the extraction agent can be introduced into the press chamber of the mechanical pressing device (11). In the region of the input line of the supply device a pressure sensor (8) and a flow sensor (9) are provided for measuring the amount of extraction agent introduced into the press chamber, so that an adjustment of the amount of incoming extraction agent can be achieved by means of the evaluation and control unit (5).

[0109] A second measuring point (13) is provided behind the mechanical pressing device (11) in the conveying direction, which second measuring point has measuring means for determining at least the oil content of the press cake discharged from the mechanical pressing device (11).

[0110] In a preferred embodiment of the application, the second measuring point (13) has for this purpose at least one NIR-based measuring device, which is particularly preferably implemented as NIR online technology.

[0111] Figure 2 An exemplary embodiment of the method according to the application for obtaining oil from seeds is shown in a schematic diagram.

[0112] The seeds are first adjusted in terms of temperature and humidity with the supply of hot steam. The adjusted press mass is conveyed past a first measuring point (7) to a mechanical pressing device (11). At this first measuring point (7), the humidity, the fiber content and the oil content of the press mass are continuously measured by means of a NIR-based measuring device, which is based on NIR online technology. The press mass is pressed with the mechanical pressing device (11) in order to separate the oil components from the solid components. Crude oil and press cake are discharged from the mechanical pressing device (11). In the region of the discharged press cake, the oil content of the press cake is continuously measured by means of a second measuring point (13), wherein a NIR-based measuring device is preferably used, particularly preferably according to NIR online technology.

[0113] The continuously detected measurement values in terms of the humidity of the press mass after the adjustment are evaluated and used to continuously control the steam adjustment device, so that the humidity and the temperature of the press mass after the adjustment are as close as possible to the predefined setpoint values.

[0114] The continuously detected measurement values in terms of the fiber content of the press mass are evaluated and used to continuously control the rotational speed of the press drive, so that the rotational speed of the press drive is always adjusted to the fiber content of the press mass.

[0115] The continuously detected measurement values in terms of the oil content of the press mass after the adjustment are evaluated and used to continuously control the amount of extractant supplied during the pressing, so that an extractant amount is always supplied which is matched to the oil content of the press mass.

Claims

1. An apparatus (1) for obtaining oil from seeds, having at least one conditioner (2) for conditioning the temperature and humidity of the press mass, at least one mechanical pressing device (11) and at least one conveying device (6) for conveying the conditioned press mass from the conditioner (2) to the mechanical pressing device (11), wherein A first measuring device (7) is provided in the region of the at least one regulator (2), the first measuring device being configured to continuously detect at least one of the parameters of moisture content, fiber content and / or oil content of the pressed material, characterized in that carbon dioxide is used as an extractant, and the device (1) has at least one evaluation and control unit (5) configured to evaluate the measured values ​​detected at least by means of the first measuring device (7), wherein the device (1) has at least one supply device (12) for supplying the extractant to the pressing chamber of the at least one mechanical pressing device (11), wherein the oil content of the pressed material upstream of the mechanical pressing device (11) can be measured by means of the first measuring device (7), wherein the at least one evaluation and control unit (5) is configured to control the supply device (12) so that the amount of extractant supplied to the pressing chamber can be continuously adjusted according to the oil content of the pressed material.

2. The apparatus (1) for obtaining oil from seeds according to claim 1, characterized in that, The first measuring device (7) for continuously detecting at least one of the parameters of moisture, fiber content and / or oil content of the pressed material has at least one near-infrared based measuring mechanism.

3. The apparatus (1) for obtaining oil from seeds according to claim 2, characterized in that, The near-infrared-based measurement mechanism is constructed using near-infrared online technology.

4. The apparatus (1) for obtaining oil from seeds according to claim 1, characterized in that, The at least one evaluation and control unit (5) is configured to control the at least one regulator (2) so that the humidity and temperature of the press can be continuously adjusted by means of the regulator (2).

5. The apparatus (1) for obtaining oil from seeds according to any one of claims 1 to 4, characterized in that, The device has at least two stages for pressing the material, each of which has at least one regulator (2), at least one conveying device (6) and at least one mechanical pressing device (11), wherein the stages are arranged sequentially along the conveying direction of the material.

6. A method for obtaining oil from seeds, comprising at least the steps of: - Supply the pressed material to at least one regulator (2), - regulate the pressed material by means of the regulator (2), - continuously measure the moisture and / or fiber content and / or oil content of the pressed material after regulation, - continuously evaluate the measurement data by means of at least one evaluation and control unit (5), - continuously control the amount of extractant supplied to the pressing chamber of the mechanical pressing device (11) based on the measured oil content of the pressed material, - transport the regulated pressed material to the mechanical pressing device (11), - press the pressed material by means of the mechanical pressing device (11) to separate the contained oil from the solid components, - use carbon dioxide as the extractant.

7. The method for obtaining oil from seeds according to claim 6, characterized in that, To continuously measure the moisture content and / or fiber content and / or oil content of the press, at least one near-infrared-based measurement is performed.

8. The method for obtaining oil from seeds according to claim 7, characterized in that, To perform the at least one near-infrared-based measurement, a near-infrared-based online measurement mechanism is used.

9. The method for obtaining oil from seeds according to any one of claims 6 to 8, characterized in that, The method comprises at least two stages, wherein the press is conditioned and pre-pressed in a first stage and conditioned and re-pressed in at least one second stage.

10. The method for obtaining oil from seeds according to any one of claims 6 to 8, characterized in that, Use the apparatus (1) for obtaining oil from seeds according to any one of claims 1 to 5.

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