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Fuels and Alternative Fuels Materials or substances that can be used as a fuel, waste oils, vegetable oils or animal fats, which can be used alone, or blended with fossil fuels.

Fuels and Alternative Fuels

WMO Processing Question


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  #1  
Old 07-27-2014, 08:50:02 PM
LagoonFarm LagoonFarm is offline
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Default WMO Processing Question

I have a question about wmo processing- is it safe to use a water heater to heat the oil for processing in a pressure 'fuge?
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Old 07-28-2014, 01:55:56 PM
dalmatiangirl61 dalmatiangirl61 is online now
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Default Re: WMO processing question

So far as I know, yes, its what most of the installations I've seen used. What kind of centrifuge are you looking at? I've been wanting to set up a system myself, hoping to use the waste oil for the tractors.
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Old 08-16-2018, 01:51:02 PM
Beanscoot Beanscoot is offline
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Default Re: WMO processing question

It depends on the type of water heater, but if referring to the typical "immersion heater", there is a danger if the oil level drops below the heater element.
Without the liquid around it, the heater element will overheat, and possibly set fire to the oil that remains on it.
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Old 10-17-2018, 05:56:56 PM
kwfiggatt kwfiggatt is offline
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Default Re: WMO processing question

I use a 1500w, 120V water heater element in a waste oil burner setup that I've built. The water heater element preheats the oil up to 90F before it goes into the heated burner block/nozzle.

So, long story short, a water heater element does work for heating WMO. Just make sure to keep it covered with oil at all times or it will let the magic smoke out. I use a PID temperature controller, a solid state relay and a thermocouple as feedback for the PID controller.

Another important tidbit - when you design and build the heater / processor, try to design everything so that when it fails, it fails "gracefully". On my preheater setup, I built a tank out of a piece of 6x6" box tubing with a float switch that triggers a supply pump to keep the level in the preheat tank relatively constant. The heater is in the bottom of the tank. I had made a dip tube to feed the burner that picks up oil from below the level of the heater. My supply pump failed and the burner continued to run as the t-stat was calling for heat. Since the dip tube was lower than the level of the heater, the heater element was uncovered, which resulted in it overheating and burning out. This didn't fail gracefully, but luckily didn't result in a fire.

To make the system fail gracefully, I cut a couple of inches off of the dip tube, which keeps the oil above the heater level. I also made sure that the thermocouple is still in the oil at this lower level, which makes sure the PID controller still has feedback and doesn't go wide open trying to heat oil that it is not sensing is getting hot.

Anyway, think through your setup and try to make sure that if something fails it's not going to result in overflowed oil or a bad situation. I've had my share of oil on the garage floor with my waste burner setup.

Kevin
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Old 10-17-2018, 08:41:42 PM
Beanscoot Beanscoot is offline
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Default Re: WMO Processing Question

If you could find one, a lower wattage heater would probably work well for the small volume of preheat oil, even a 150 watt lamp boxed in under the tank might be sufficient.
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