Ensyn converts forest residues and other nonfood biomass to a biocrude known as RFO through the application of its proprietary rapid thermal processing (RTP) technology. RTP has been in commercial use for more than 25 years for production of food products, chemicals and heating fuels. The company is now increasing production capacity for a broader commercialization of its fuels business, including refinery coprocessing.

In refinery coprocessing, RFO is processed with fossil crude oil in fluid catalytic crackers, which Ensyn says it has demonstrated in a number of trials, some at operating commercial refineries. Ensyn is commercializing refinery coprocessing in partnership with Honeywell UOP.

The regulatory approvals received from CARB covers the production of both gasoline and diesel by way of RFO coprocessing in specific California refineries using RFO produced at Ensyn’s facility in Ontario from forest residues. The carbon intensity of the resulting renewable gasoline and diesel was determined to be in the range of approximately 20-25 g CO2e/MJ, or approximately 70 percent less than traditional petroleum-based fuels. Ensyn expects that RFO produced at locations closer to the refineries will have reduced carbon intensity due to lower transportation impacts.

“We are very pleased to see these regulatory pathways confirmed,” said CJ Warner, executive vice president of strategy and business development at Tesoro. “These approvals help support and validate our plans to process these renewable feedstocks using our existing infrastructure to produce less carbon-intensive fuels and help lower the cost of compliance with LCFS requirements in California.”

Veronica May, vice president and general manager of Honeywell UOP’s renewable energy and chemicals business, said, “We congratulate Ensyn, Chevron and Tesoro on securing these regulatory pathways. We believe refinery coprocessing offers refiners a cost-effective and efficient option for integration of cellulosic feedstocks into their operations.”