Process and device for obtaining oil from seeds
A process and a device for obtaining oil from seeds, wherein at least one of the parameters of moisture, fiber content and oil content of the pressed material is continuously measured and evaluated, thus making it possible to continuously control at least one of the following variables: moisture of the pressed material, speed of the press drive and amount of an extraction agent supplied. The oil yield can be increased, the fluctuations in the oil yield can be reduced and energy can be saved by implementing the device-related and process-related features according to the invention.
1 . A process for obtaining oil from seeds, comprising steps of:
supplying a pressed material into at least one conditioner;
conditioning the pressed material with the conditioner;
continuously measuring oil content of the pressed material after the conditioning;
continuously evaluating measurement data with at least one evaluation and control unit;
continuously controlling an amount of an extracting agent supplied to the pressed material in a pressing chamber of a mechanical pressing unit as a function of the measured oil content of the pressed material;
conveying the conditioned pressed material to the mechanical pressing unit; and
pressing the pressed material with the mechanical pressing device to separate contained oil from solid components, wherein carbon dioxide is used as the extracting agent.
2 . The process for obtaining oil from seeds according to claim 1 , wherein the continuous measuring of the oil content of the pressed material includes carrying out at least one NIR-based measurement.
3 . The process for obtaining oil from seeds according to claim 2 , including using an NIR-based measuring device in NIR online technology to carry out the at least one NIR-based measurement.
4 . The process for obtaining oil from seeds according to claim 1 , wherein the process is formed in at least two stages, wherein the pressed material is conditioned and initially pressed in a first stage and is conditioned and re-pressed in at least one second stage.
5 . The process for obtaining oil from seeds according to claim 1 , including using a device for obtaining oil from seeds, comprising: the at least one conditioner for conditioning temperature and moisture of pressed material; at least one mechanical pressing unit; at least one conveyor unit for conveying the conditioned pressed material from the conditioner to the mechanical pressing unit; and a first measuring unit, configured to continuously acquire at least one of parameter from the group consisting of moisture, fiber content, and oil content of the pressed material, arranged in a region of the at least one conditioner.