DD205606A1 - METHOD OF DRYING, SKINNING AND SHELL SAVING OILED SEED - Google Patents

Abstract

THE OBJECT AND OBJECT OF THE INVENTION IS TO DEVELOP A PROCESS IN WHICH THE PROCESS STEPS FOR SEED PROCESSING IN THE CONTINUOUS PRODUCTION PROCESS ARE CARRIED OUT ON A PLANT AGAINST THE KNOWN TECHNOLOGIES, SUCH AS CRUSHERS, PUNCHES AND BUTTONS AND DRYERS AND SEVEN. In accordance with the invention, the seed is drizzled in a vortex dryer via a sprayed, aerated air jet and the core is peeled from the peels. THROUGH A DESTROYER THE SHELLS ARE DISCONNECTED FROM THE CORE, WHERE THE RESALTING IS CARRIED OUT IN THE ELETROSTATIC FIELD.

Description

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Title of the invention;

Process for drying, formwork and shell separation of oily seeds

Field of application of the invention

The invention relates to all fields of process engineering in which seeds are to be dried, peeled and freed from their shells.

Characteristic of known technical solutions

From practice, methods are known in which the formwork by crushing, shock or impact action by mechanical means and the shell separation by sieves or classifier took place in the process according to DE-AS 21 35 173, the seed material is heated to 318 K and by cold air flow a baffle plate fed ₀ the broken seed is separated by friction from the tray and wind sifter the sheath-core discriminating _o is carried out by "the DE-PS 27 16 637 it is known that the shell by means of friction action, such as Sohleifkörper, is abraded and The separation via air classifier takes place. The disadvantage of these methods is the separate production of the heating, peeling and separation process stages on the seed to be extracted and, secondly, a corresponding production and installation expenditure is necessary 53,911 a process for the extraction of oil from vegetable raw materials, in which the Ro after pre-cleaning, pre-crushing and a grinding process, solvent extraction is performed »

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Disadvantageously, the pre-treatments of screening, drying and breaking, which are carried out on separate installations, have an effect on the processing costs. On the other hand, the fine fraction of the nuclei is increased «

Object of the invention

The object of the invention is to intensify the peeling and drying process, to reduce the fines content and to reduce the processing and equipment costs significantly compared to comparable processes.

Explanation of the essence of the invention

The invention has for its object to develop a method in which compared to the known technical solutions, such as crushing, bumping and hitting and drying and screening, the process steps for seed treatment in a continuous production process are carried out «It is an intensive and gentle drying to achieve and to make the peeling process so that largely comminution of the cores is avoided.

According to the invention Aifgäbe is achieved in that dried to obtain shell-free products of fat-containing, preferably fat seeds, by drying, peeling and peeling separation of the seeds in a fluidized bed with a ge directed flow through a gas distributor plate and STATEMENTS- to a residual moisture content of <10 M _a% is brought so that the bowls are intensively dried and released from the core by the high turbulence with simultaneous drying, then the shell selection by the impact effect occurs in countercurrent and the residual selection of the core material from the shells and the unpeeled seeds in the electrostatic field «

It is part of the invention that heated air or an inert gas used for drying is used, the moisture content of the shell after the drying process is less than the ν ·

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of grain, preferably jj »1% by mass, the process can be carried out at atmospheric, at superatmospheric and at reduced pressure.

It further belongs to the invention that the temperature of the seed during the drying process is 373 K. _o The gas velocity during the drying and peeling process is above the discharge rate of the shells and below the vortex point velocity of the cores during the peeling process.

10 embodiment

The invention will be explained in more detail using an exemplary embodiment willη ₀

Preferably heated air is brought via a distributor plate of a fluidized bed dryer with the fluidized seeds in contact and dried to a residual moisture content of <10 mass%. By a defined air velocity, the shells of the seed dried to a residual moisture content of 1 mass% and the core of the Trays released · ¹ The trays are then separated from the core with a destroyer, whereby the tray selection is carried out by impingement in an air or _o gas countercurrent. ¹ Residual selection of the core material from the trays takes place through an electrostatic field by means of a corona cutter. The moisture content of the shell after the drying process is lower than that of the core and is 1% by mass. The temperature of the seed during the drying process is preferably 363 K * » ^; During the drying and peeling process, the gas velocity is greater than the discharge rate of the trays, so that the trays are discharged above the drying space due to their low density, while the cores leave the fluidized bed apparatus via a rotary feeder, since the gas velocity below the vortex point velocity during the peeling process the cores is ₀

Claims (4)

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Erfindungsanspruoh A method for obtaining shell-free products from fatty, preferably high-fat seeds by drying, peeling and peeling, characterized in that the seeds are contacted in a fluidized bed to a heated drying medium, the husks of the seed by a defined air velocity over a distributor plate on a residual moisture <Ίθ mass% dried, dissolved from the core,. _u ftgegenstrom selected by impact action in a L and the Restselektierung of the core material is carried out from the shells in the electrostatic field " 2. Method according to item 1, characterized in that heated air or a heated inert gas is used to dry the seeds. Method according to item 1, characterized in that the moisture content of the shell after the drying process is less than that of the core, preferably i 1% by mass, is · -. 4. ^ experience according to items 1 to 3 »characterized in that the process is carried out at atmospheric pressure. 5β Process according to items 1 to 3 », characterized in that the process is carried out under slight overpressure _e 6o method according to item 1 to 3 »characterized in that the method is carried out under low vacuum. Experienced according to items 1 to 6, characterized in that the temperature of the seeds during the drying process is <373 K. 241734 7 8. ¹ method according to punk * 1 to 7 »characterized in that the gas velocity during the drying and peeling process is above the discharge speed of the shells.