Gas to Liquids with a “Green” option
In addition to GTL technology, EFT also possesses the technology to turn various bio-oils (seed oils, algae oils, cooking oils, etc) into “drop-in compatible” HEFA fuels (Hydroprocessed Esters and Fatty Acids). On July 1, 2011, ASTM formally approved the use of HEFA fuels in the same blending ratios as FT fuels.
EFT has developed and patented a method to incorporate its HEFA technology into a GTL facility. A 2,000 BPD GTL plant can produce enough excess hydrogen to hydroprocess up to 2,000 additional BPD of bio oils into HEFA fuels. The plant’s total production capacity is almost doubled with roughly a 15% increase in capital expense.
The GTL hybrid approach significantly lowers the cost of producing HEFA fuels. The combination of shared infrastructure, shared labor and, effectively, free hydrogen are strong economic advantages. The overall yield of transportation fuels is also higher from this method because the light hydrocarbons normally lost when the triglycerides in the bio-oils are saturated are recycled to the front of the GTL plant and used as feedstock to make synthesis gas for FT synthesis. In the US, RIN (renewable identification number) credits are applicable to HEFA fuels and further enhance the plant’s economic performance.
EFT believes that our “hybrid” design, utilizing both natural gas and bio oils as feed stocks, will prove to be the most economical way to process bio oils into renewable (HEFA) fuels.