Removal of the husk(s) from plant material using pressurized fluid
- How does it work?
- What can it be used for?
- What can it not be used for?
- Related Facilities
- Further Information
|Key words||husk, immature, wheat, grain, glumes, glumellae, legume, pressurized fluid|
|Completed by||INRA - IATE|
How does it work?
|Primary objective||To remove the different types of husk around a plant material consisting of any kind of husked grain/pea, e.g. immature wheat grain. It replaces a classic combine harvester when the water content of the material is too high and this consequently could turn into a paste. (1,2)|
|Working principle|| The whole operation is a wet process performed using a specific device which is described below:
The plant material is introduced into a fluid (e.g. air or water); then that fluid loaded with the material is projected (e.g. pressurized water through a nozzle) at a specific angle on at least one rigid plate, the impact of the products mixed with the fluid causing removal of the husk(s) (i.e. glumes and glumellae for wheat) surrounding the vegetable material. The grains are separated from the husk(s) (e.g. in a settling tank, using a cyclone, etc.) The selectivity rate of this technology is high: 985 out of 1000 grains are successfully dehusked. The dehusked material should be decontaminated and/or dryed for a proper preservation. (1,3)
|Important process parameters||pressure of the pressurized fluid (for water, between 50 and 200 bars), angle of projection (should be adjusted between 40 to 50 degrees), capacity (between 300 and 500 kg/h).|
|Important product parameters|| maturity stage of the cereal grains (if they are too soft they might be crushed)
The size of the particles (grains) should be from 3 to 10 mm.
What can it be used for?
|Products|| This technology has been proven efficient for immature durum wheat grains.
It is assumed to be efficient but should be tested for effectiveness on other cereal grains (at milk, dough or mature stage, which are the physiological stages of grain maturity) and even other vegetable products such as legumes.
|Solutions for short comings||
What can it NOT be used for?
|Operations||Any other than separation.|
|Other limitations||This technology combines dry and wet processing environments; maybe this does not match with some product constraints: some material might be damaged during the process because of the shock onto the plate.|
|Risks or hazards||Due to the moist environment, the plant material needs to go through an appropriate procedure afterwards to avoid contamination.|
|Maturity||Available as an industrial prototype.|
|Modularity /Implementation||This technology should replace at least a part of the production line (some existing devices can be re-used, such as conveyor belt, settling tank, etc).|
|Consumer aspects||No consumer issues expected.|
|Legal aspects||Patent: US2009/0226594 A1|
Facilities that might be interesting for you
|Institutes||INRA - IATE|
(1) Abecassis J., Bouniol A., Chaurand M. 2008. Method for obtaining monocotyledon plant grains for human or animal food. US2009/0226594 A1
(2) Humeid, M.A., Al-Amary, M. 1986. A study on mechanization of frekeh production in Jordan 2. Study of some nutrients and cooking time of frekeh produced mechanically at different maturity stages of wheat heads. Dirasat : 13 (8), pp. 73-86
(3) Umary, M.A., Humeid, M.A. 1986. A study on mechanization of frekeh production in Jordan 1. Parching and treshing mechanical equipment design. Dirasat : 13 (5), pp. 31-50
pressure of the pressurized fluid (for water, between 50 and 200 bars), angle of projection (should be adjusted between 40 to 50 degrees), capacity (between 300 and 500 kg/h). maturity stage of the cereal grains (if they are too soft they might be crushed) The size of the particles (grains) should be from 3 to 10 mm.warning.png"maturity stage of the cereal grains (if they are too soft they might be crushed) The size of the particles (grains) should be from 3 to 10 mm." cannot be used as a page name in this wiki. Mills 2.2.1 physical separation other Interviews with the researchers from INRA-IATE: Joël Abecassis, Marc Chaurand, Alexandre Bouniol WikiSysop :Template:Review document :Template:Review status