ABSTRACT The diploma thesis called "Verification of efficiency and utilization of oilseed presses" is focused on the issue of oil pressing with emphasis on process efficiency and oil yield. A measurement was carried out at the Institute of Horticultural Engineering, the purpose of which was to verify the screw press of a small capacity UNO FM 3 F of Farmet, Czech Republic in the pressing of grape seed oil. The experimental measurements were carried out in 2018-2019 for seed samples provided by Agropol Mikulov, which were separated from the marc. The results of the work are divided into two main parts – Cold oil pressing and Soxhlet oil extraction and Economic aspects of wine production lines designed for seed processing and oil production. The seeds were compressed at 20, 40, 60, 80 and 100 rpm. The results confirmed that with increasing speed the pressing time was reduced. At higher speeds during compression, the amount of sediment increased. While pressing from 20 to 80 rpm, the oil yield decreased from 9.87 % to 9.67 % while the pressing capacity increased from 0.86 liter/hour to 2.17 liter/hour. It was no longer possible to press at speed 100 rpm, the machine was too overloaded. The Soxhlet extraction apparatus with hexane as solvent was used to determine the total oil content. Seed oiliness was 12.85 %. The market value of cold pressed oil from grapevine seeds, used in gastronomy or as a massage product, is 990-1100 CZK / liter. With an average crude oil yield of 8 %, from 1 ton of seeds, 80 liters of oil can be pressed, which represents the currently expected yield of 80-88 thousand. CZK. The results of the economic evaluation show that with all the costs involved in the oil production, including the investment costs for the production line, the return on investment is 3,23 years. From the results of the economic evaluation of the experiment at 9,8 %, from 1 ton of seeds the expected yield of 98 l of oil is 97 020 - 107 800 thous. CZK. The return on investment period was 1,92 years.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:426554 |
| Date | January 2019 |
| Creators | Jackson, Zdena |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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