You incorrectly use the 80% number from the SAIC summary.
For some unexplained reason you take the 80% conversion rate of plastic into fuel and use that to convert plastic in PLASTIC.
Makes ZERO sense to do that.
Then you take that erroneously reduced plastic amount and apply a plastic to fuel conversion rate of 9 lbs/gal a second time.
Talk about math problems..... Wow, just Wow.
After that erroneous calculation you convert from gallons to barrels using the beer barrel volume of 31 gals/bbl.
An oil barrel is 42 gallons.
Then from there you decide to use a sale price of $90 per barrel which seems very strange since JBI has documented sales of product at $109.80 per barrel. That is an 18% decrease in sales price for no discernible reason.
121,318 lbs of plastic were processed yielding 80 lbs of liquid fuel per 100 lbs of plastic.
specifically 10,287 gal. of number 6 4,269 gal of naptha
Using numbers I found for weight for these two fuels I come up with 84,353.4 lbs of #6 30,224.5 lbs of naptha
this equals 114,578 lbs of liquid fuel for a 94% yield.
I'm no petroleum engineer but I find it hard to believe that the weight per gallon of these fuels can vary by a pound or so, which would be needed to get to the 80% yield in the SAIC summary.