RTP for Biomass Conversion

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Flare Brochure

Envergent RTP Process Basics

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Convert forest waste to renewable fuels

RTP technology is a fast thermal process in which biomass, usually forest residuals or agricultural by-products, is rapidly heated to approximately 500°C in the absence of oxygen.

A circulating transported fluidized bed reactor system, similar to the one used in the UOP Fluid Catalytic Cracking (FCC) technology, is at the heart of the process. A tornado of hot sand vaporizes the biomass, which is then rapidly quenched, typically yielding 65wt% to 75wt% RTP green fuel.

RTP technology offers exceptional versatility

  • Minimal utility and infrastructure requirements – ideal for remote or existing facilities
  • Handles a wide range of feedstocks – forestry and agricultural residuals, lignin material from the pulp and paper industry, post-consumer, wood-based construction and demolition materials as well as sustainable energy crops such as miscanthus and switch grass
  • Compact, modular construction can reduce the total installed cost and shorten the delivery schedule
  • RTP green fuel is storable, transportable, efficient and available on-demand

RTP is the only commercial scale pyrolysis technology available today to produce liquid renewable fuel for heat, power and transportation fuels.

A clean-burning, sustainable cost-effective fuel oil substitute

With virtually no sulfur, RTP green fuel is produced in a nearly carbon-neutral method, helping companies reduce their carbon footprint. This pourable, liquid fuel can be adapted for use in most energy-intensive heavy industries, including electrical generation, industrial heat, forestry, refining, petrochemicals, and pulp and paper. It also can be upgraded further to produce transportation fuels.

Download the RTP white paper

RTP technology also produces char and a non-condensable gas, both of which can be used to provide process energy in the reheater to maintain the RTP process and/or in the dryer to condition the biomass. This makes the RTP process virtually self-sustaining.

Rapid Thermal Processing quickly converts relatively low-value feedstock into high-value liquid biofuel delivering up to 8,680 Btu per pound.

Biomass Material Yield (wt%) Gross Caloric Value (MJ/kg) Higher Heating Value (Btu/lb)
Hardwood 70-75 17.2 – 19.1 7,400 – 8,000
Softwood 70-80 17.0 – 18.6 7,300 – 8,000
Hardwood Bark 60-65 16.7 – 20.2 7,180 – 8,680
Softwood Bark 55-65 16.7 – 19.8 7,180 – 8,500
Corn Fiber 65-75 17.6 – 20.2 7,570 – 8,680
Bagasse 70-75 18.9 – 19.1 8,100 – 8,200