
Originally Posted by
PistoneScrapProcessing
I have sold used oil before. Mostly oil out of large transformers diatect oil i believe or something like that. Mostly though its been hydraulic fluid or 90 weight well I don't know if its 90 weight but that's what I always heard it called. The stuff is thick like honey. I know I got over a buck usually per gallon. They always deducted for water once they figured out what the percentage of water to oil was when it was contaminated or tainted oil.
Never had a problem with a 55 gallon drum collapsing they always would open up both ports on the top of barrel before sticking the tube from the vac truck in it. It would suck up like 30 gallons a minute of regular oil or something crazy like that. I remember when we put it in barrels and lined them up in a row it didn't take long to suck them all dry.
Easy money, whenever an old apartment building, hotel or large industrial building was slated to come under the wrecking ball, most of these old building had boilers fired from bunker oil. The tanks sometimes had 5,000 gallons left inside to recover.
Some of the old buildings had a retrofit of the same boiler using bunker fuel over to natural gas, the tanks left untouched still half full or more. The tanks held when full 10,000 gallons
Buck a gallon that was over 10 years back these days probably get double that.
I heat my laboratory and a small reactor with a waste oil hot water boiler, next year I'm going to pour a new slab in the shop with hot water heat in the floor then plumb the house into that boiler. So far I've been lucky and get all the waste oil I need for free.
I get a lot of waste vegetable oil, next on my to do list is bio diesel, I've been dragging my feet on this project waiting for a patent to be released. A student discovered a catalyst that simplifies the process of making bio and utilizes almost 100% of the feedstock.
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