System for production of a renewable liquid fuel

A system for carbonizing a biomass, comprising:

• a pump adapted to receive a blended feedstock of noncarbonized biomass and bio fuel, the bio fuel lubricating the bio mass;
• a reactor configured to continuously receive the blended feedstock and to carbonize the uncarbonized biomass of the blended feedstock, the bio fuel of the blended feedstock also providing for enhanced transfer of heat to the uncarbonized biomass, wherein the reactor is a first pipe having a first diameter surrounded by a second pipe having a second diameter larger than the first diameter, the second pipe being supplied with a recycling molten salt stream, the length of the first pipe having an input end for receiving blended feedstock, and an output end for outputting the carbonized biomass.