LIGNO-CELLULOSIC BIO-REFINERY PROCESS
Under license from US renewable fuels firm, Comstock Fuels Corporation, SACL is developing greenfield, refinery opportunities for the production of Ligno-Cellulosic Ethanol and Bioleum™ as intermediate feedstocks for further refining into modern fuel derivatives, such as, Sustainable Aviation Fuel SAF), Renewable Diesel and Renewable Gasoline.
By using the Comstock patented process, the yields associated with making renewable fuels from cellulosic material such as Woodchip, Sugar Cane Bagasse and/or Savannah Grasses, are vastly improved. The problem has always been that plants have evolved to protect their starches and sugars, their energy, from microbial attack by encapsulating their energy in an armour called Lignin.
Until now, scientists have been trying to develop more and more exotic (and expensive) enzymes to destroy this Lignin armour, with limited commercial success, producing <50 US Gasoline Gallon Equivalent (GGE) of fuel per Metric Tonne of cellulosic feedstock.
View recent Video for a detailed explanation of our process: https://comstock.inc/uplode23/fuels/
The Comstock process, pre-treats the biomass material using a proprietary solvent solution. This pre-treatment separates any cellulosic material into its core components of Pulp, Furfural and Lignin. The resulting pulp, releases pure sugar and starch, which is free of metallic impurities that often inhibit the efficiencies of all known existing enzymatic digestion processes.
As a result, one Metric Tonne of woody biomass from refined pulp, can now be easily digested by inexpensive Gen 2 enzymes, enabling producers to use low cost, off-the-shelf ethanol production equipment to produce ethanol. Our ethanol can then be further refined into >125 US GGE of fuels such as A2J-SAF, Renewable Diesel or Renewable Gasoline.
Recent Press release: https://comstockfuels.com/press-release/comstock-fuels-amends-license-with-renfuel/
The separated Lignin is not wasted. The Lignin stream is captured and distilled out during the process. It is converted into Bioleum™ and then hydrotreated into a “bio-intermediate ester” feedstock that any existing petroleum oil refinery can process into valuable fuel products such as Renewable Diesel, Renewable Gasoline and SAF. This intermediate oil derivative, is basically a sulphur free, crude oil alternative feedstock, that can be co-processed into fuel, contributing to an overall yield of >125 US GGE of fuel from the same metric tonne of input biomass. Future developments involve capturing and coprocessing the Biogenic CO₂ off-gases from the ethanol lines, to further enhanced the process and generate ~15 US GGE of additional fuel.