Energy Equation for Asphalt Shingles from FOWA Extraction Process

FOWA Extraction Process

This post discusses the energy equation for the FOWA process based on some observations and assumptions. Briefly, the process allows an asphalt producer to extract bunker fuel - test 1, bunker fuel - test 2 - S - 441 ppm and bunker fuel - test3 - S - 291 ppm [from asphalt¹. The links to tests 2 and tests 3 show that the sulfur content in the extracted oil is between 291 - 441 ppm less than the 5000 ppm (or 0.5 %) as required by IMO as part of its Sulfur2020 initiative.

Fuel Oil From Waste Oil (FOWA) Process Energy Equation

We present the equation based on assumptions and observations² about the extraction process in our prototype runs.

Assumptions

• 1 lb asphalt shingles – 20,000.00 BTU Mallick and Teto 2000
• 1 kwh consumes 3,412 BTU
• 1 gallon Bunker Fuel ~ 142, 886 BTU (aka No 4. Fuel Oil) Energy Conversion Toolbox
• 1 kwh costs approximately USD 00.10.

FOWA Assumptions (observations)

In our prototypes, we have recorded that 1 kg of asphalt shingles produces approximately 16 liters of bunker fuel. The rest of the arithmetic is based on converting them to fps units ³.

• 1 kg -> 16 liters of Bunker Fuel
• 1 lb -> 7.25 liters
• 1 lb -> 1.91 gallons
• 1 lb -> 1.91 * 142,886 = 272, 912 BTU
• Amount of diesel consumed : 100 ml ~ -3672 BTU
• 1 lb = 269,249 / 3412 kwH ~ 80 kwH
• 1 lb = 81 * 0.10 ~ USD 8.10 cents Energy produced.

The value added by our extraction process⁴ is approximately 13 times as shown below.

      272, 912.00/20,000.00 ~ (approximately) 13.

These computations can serve as a guide for a waste producer to help modify their annual capacity while incorporating the fuel-oil extraction process.

Footnotes