Difference between revisions of "Camelina Oil"
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If the oil solidifies in the tanks, it cannot be liquefied again even by forced heating. In the vicinity of the heating coils, the oil melts, scorches, discolors and becomes rancid.<br><br> | If the oil solidifies in the tanks, it cannot be liquefied again even by forced heating. In the vicinity of the heating coils, the oil melts, scorches, discolors and becomes rancid.<br><br> | ||
Pumping out may be difficult in cold weather. The oil may cool too rapidly in the long lines and solid deposits form on the outer walls, which cannot be pumped out and prevent the still liquid cargo from reaching the suction valve. This problem can be solved by appropriate heating or insulation of the lines.<br><br> | Pumping out may be difficult in cold weather. The oil may cool too rapidly in the long lines and solid deposits form on the outer walls, which cannot be pumped out and prevent the still liquid cargo from reaching the suction valve. This problem can be solved by appropriate heating or insulation of the lines.<br><br> | ||
| − | Fats and fatty oils are insoluble in water. However, [[contact]] with water may give rise to soluble lower [[ | + | Fats and fatty oils are insoluble in water. However, [[contact]] with water may give rise to soluble lower [[Fatty Acids]] and glycerol, which cause rancidity together with changes in color (yellow to brown), odor and taste as well as gelling and thickening. For this reason, the tanks must be absolutely dry after cleaning.<br><br> |
Ventilation must not be carried out under any circumstances, as it would supply fresh oxygen to the cargo, which would promote oxidation processes and premature rancidity.<br><br> | Ventilation must not be carried out under any circumstances, as it would supply fresh oxygen to the cargo, which would promote oxidation processes and premature rancidity.<br><br> | ||
Revision as of 15:04, 30 October 2012
| Infobox on Camelina Oil | |
|---|---|
| Example of Camelina Oil |  |
| Facts | |
| Origin | See text |
| Stowage factor (in m3/t) | - |
| Humidity / moisture | See text |
| Ventilation | See text |
| Risk factors | See text |
Camelina Oil
Description
Camelina is a genus within the flowering plant family Brassicaceae. One species, Camelina sativa, is a historic and potentially important oil plant. It is native to Mediterranean regions of Europe and Asia - Turkmenistan, Afghanistan, Pakistan, Iran and Spain. It is known commonly as camelina, and other names, such as German sesame, false-flax, gold-of-pleasure, and Siberian oilseed. It has gained some of these names because of its cold-hardiness.
Camelina oil is of vegetable origin and is obtained by cold pressing from the seed of Camelina sativa. It is a yellow oil with a flowery odor and a pleasant taste.
Camelina oil should have an acid value of at most 1.3%.
Application
Camelina oil is used as an edible oil and, blended with linseed oil, as a paint oil; it is also used as a biofuel and biolubricant.
Shipment / Storage
Normally, the oil does not need to be heated, since its solidification point is relatively low.
Loading temperature 23°C
Travel temperature
(favorable temperature range) 15°C (12 - 23°C)
Solidification temperature -15 - -18°C
Pumping temperature approx. 23°C
Under normal transport conditions, camelina oil is liquid and therefore need not be heated. However, if extremely low temperatures should arise during the voyage which are in the solidification range, the oil has to be heated to prevent losses in quality and to achieve pumpability.
The solidification temperature is of considerable significance in the transport of fatty oils and fats. They must remain liquid during loading, during the voyage and during unloading. Chill haze (separation) begins if cooling causes the temperature of the oil to approach solidification point, the oil becoming ointment-like and finally solid, such that it is no longer pumpable.
If the oil solidifies in the tanks, it cannot be liquefied again even by forced heating. In the vicinity of the heating coils, the oil melts, scorches, discolors and becomes rancid.
Pumping out may be difficult in cold weather. The oil may cool too rapidly in the long lines and solid deposits form on the outer walls, which cannot be pumped out and prevent the still liquid cargo from reaching the suction valve. This problem can be solved by appropriate heating or insulation of the lines.
Fats and fatty oils are insoluble in water. However, contact with water may give rise to soluble lower Fatty Acids and glycerol, which cause rancidity together with changes in color (yellow to brown), odor and taste as well as gelling and thickening. For this reason, the tanks must be absolutely dry after cleaning.
Ventilation must not be carried out under any circumstances, as it would supply fresh oxygen to the cargo, which would promote oxidation processes and premature rancidity.
Risk factors
- Self-heating / Spontaneous combustion
- Odor
- Contamination
- Shrinkage/Shortage (Camelina oil is a drying oil. Substantial losses may therefore sometimes occur due to adhesion of the cargo to the tank walls).