eMail :
Telephone : +31 (0)53 486 2287
Fax : +31 (0)53 486 1180
Address : Josink Esweg 34 , Enschede , The Netherlands , 7500 AV

BTG-BTL is active in the biomass energy sector, and has developed technology to mimic nature. Where the Earth formed oil reserves in millions of years, BTG-BTL is doing it in just 2 seconds. For this we use pyrolysis technology, which produces a dark-blown liquid, best known as pyrolysis oil. We’ve spent the last 15 years developing and optimising pyrolysis technology, as it is difficult to imitate mother earth you may understand.
BTG BioLiquids is a pyrolysis technology provider. Our technology efficiently converts most types of non-food biomass into a second generation bio–oil within two seconds. Based on 15 years of developing, optimizing and scaling up our technology we deliver commercial scale pyrolysis plants to our customers today.

Today pyrolysis oil can be used to replace fossil fuels and achieve a reduction in GHG emissions of 85-90%  in heat and power applications. In the near future pyrolysis oil can be used as a starting point of the bio refinery and help lead us to a sustainable economy.

The market for sustainable, non-food energy and materials will experience huge growth in the decades to come. Explore our website to discover what a sustainable investment in a new pyrolysis plant may offer you, or contact us for more information.

As an industrial heat and power consumer, would you like to substitute your current fuel for one that is both sustainable and economical? In that case the use of pyrolysis oil may be an interesting option for you. You can retrofit your existing gas or oil boiler to run on pyrolysis oil and produce green heat and/or electricity today. Due to its GHG savings of around 90% pyrolysis oil can substantially reduce your companies CO2-footprint while at the same time reducing your dependency on fossil fuel prices.

Our pyrolysis technology is now mature. We can now multiply the concept and deliver actual pyrolysis plants to our customers. The pyrolysis oil can be used in boilers to produce heat and electricity at the moment of our customer’s choice. There is absolutely no need for the pyrolysis oil to be consumed at the time and place where it is produced. Production and use can be decoupled, and pyrolysis oil can easily be stored for a couple of years.

BTG-BTL pyrolysis process

Our pyrolysis process converts up to 70 wt.% of the biomass feedstock into bio-oil and the remaining part into char and gas. Since 1993 BTG has played an active role in numerous projects on fast pyrolysis. BTG's unique and patented pyrolysis technology is characterised by an intense mixing without the need for an inert carrier gas. BTG-BTL’s has taken BTG's patented RCR (Rotating Cone Reactor) fast pyrolysis technology and engineered it into a commercial industrial installation. The improved RCR design results in a remarkably small reactor, reduced system complexity and minimum down stream equipment size compared to competing pyrolysis technologies. A process flow diagram of BTG’s fast pyrolysis process is given below.


  • Biomass particles are fed near the bottom of the pyrolysis reactor (bottom left) together with an excess flow of sand, which acts as circulating heat carrier material.

  • The biomass and sand are mixed within the pyrolysis reactor and converted into pyrolysis oil vapors, gas and char.

  • The produced vapours and gasses pass through several cyclones before entering the condenser, in which the vapours are quenched by re-circulated oil.

  • The sand and char are transported to a fluidized bed combustor, where air is added to combust the char and reheat the sand.

  • The hot sand is then transported back to the reactor to close the loop.


Shareholders BTG BioLiquids and Empyro BV

BTG-BTL is registered as a private limited company under number 0816 7874 0000 at the Chamber of Commerce in Enschede, the Netherlands. BTG-BTL is an independent company whose shares are jointly owned by BTG, BTG-BTL personnel, Tree Power, Energy fund Overijssel and a private investor. Empyro BV is jointly owned by BTG-BTL, Tree Power, Energy Fund Overijssel and a private investor.

BTG Biomass Technology Group BV (BTG) is an independent, private group of companies, which for the past 25 years has specialised in the process of conversion of biomass into useful fuels and energy. In 2007, after delivering a pyrolysis plant to a customer in Malaysia and two test facilities, BTG founded BTG BioLiquids BV.
Tree Power is a developer of commercial scale pyrolysis plants, converting second generation biomass into pyrolysis oil. Tree Power has its offices in Woerden, The Netherlands.
Energy Fund Overijssel provides financial contributions to businesses, housing associations and projects that save energy or generate energy from renewable sources. This way, the fund contributes to employment, entrepreneurship, innovation and the realization of our target of 20% renewable energy in Overijssel in 2020.