3.1 fuel and lubricating oil treatment 3.1.3 Centrifugal force can be great Both the rotational speed and the effective radius are controllable within certain engineering limitations Thus if our standing vessel is replaced by a rotating cylinder the separating force and hence the speed of separation can be increased This effectively is what happens ina centrifuge
3.1 fuel and lubricating oil treatment • 3.1.3 Centrifugal force can be great – Both the rotational speed and the effective radius are controllable within certain engineering limitations. – Thus if our standing vessel is replaced by a rotating cylinder the separating force and hence the speed of separation can be increased. – This effectively is what happens in a centrifuge
3.1 fuel and lubricating oil treatment 3.1.4 batch operation For many years marine centrifuges were designed for batch operation, which is the machines were run for a period during which solids accumulated in the bowl The machine was stopped when the accumulated solids began to impair its performance and the solids were removed
3.1 fuel and lubricating oil treatment • 3.1.4 batch operation – For many years marine centrifuges were designed for batch operation, which is the machines were run for a period during which solids accumulated in the bowl. – The machine was stopped when the accumulated solids began to impair its performance and the solids were removed
3.1 fuel and lubricating oil treatment 3.1.5 Lub. Oil batch centrifuging Batch centrifuging is still commonly used especially for lubricating oil purification, but many machines capable of continuous or semi-continuous sludge discharge are now at sea Two distinct types of batch operated machines have een used These are illustrated in Figure 3. 1 and classified in Table 3.1
3.1 fuel and lubricating oil treatment • 3.1.5 Lub. Oil batch centrifuging – Batch centrifuging is still commonly used especially for lubricating oil purification, but many machines capable of continuous or semi-continuous sludge discharge are now at sea. – Two distinct types of batch operated machines have been used. – These are illustrated in Figure 3.1 and classified in Table 3.1
LIGHT PHASE: LIGHT: PHAS IFEED → HEAVY PHASE FEED TUBULAR BOWL DISC TYPE ROTOR TYPE ROFOR. Figure3.1
Figure 3.1 Figure 3.1