Innovation provider

agnion Technologies GmbH

Contact

agnion Technologies GmbH
Löwenstr. 11
D-85276, Pfaffenhofen
Tel.: +49(0)8441/40 847-0
Fax: +49(0)8441/40 847-20
info@agnion-technologies.de
www.agnion.de

Description

Fuel is introduced to the actual fluidized bed gasifier, the Reformer, by means of a lock system. In a fluidized bed system like this, a bed of sand is held in suspension by a gas flow. Water vapor is used for this purpose in the Heatpipe-Reformer. Fuel particles mix ideally in this "fluidized", highly turbulent bed of sand, and begin to convert into a gas mixture at temperatures of around 800°C. One major advantage of this process is that the fuel that is added does not have to be completely gasified. Part of the fuel is discharged downward via a filter system into a second fluidized bed combustion chamber in the form of residual coke and/or char. This second fluidized bed is fluidized by means of air. Residual coke burns at temperatures of around 900°C in this fluidized bed, thus providing heat at temperatures around 900°C, which is then returned to the Reformer via heat pipes.

Advantages

  • Highly efficient gasification of wooden biomass
  • Electrical and heat output of 360 kW and 560 kW, respectively (from 1.3 MW heating input)
  • Use of renewable, locally available material
  • Replacement of fossil fuel (natural gas)
 

Innovative aspects (ecologic, social and economic)

Efficient generation of electricity in small-scale plants has thus far been possible only with gas engines, micro turbines and - medium-term - with fuel cells. These machines require liquid or gaseous fuels, and thus suitable gasification technologies.   
Coupled with a gas engine or a micro gas turbine, a Heatpipe-Reformer can achieve electrical efficiency factors of up to 25%; and, in fact, a Heatpipe-Reformer coupled with a fuel cell will even be able to reach factors of up to 35% in the future. In addition to the benefit of decentralization that incorporates cogeneration, the Heatpipe-Reformer can achieve overall efficiencies that have thus far been possible only in plants that have a significantly higher load scale factor.

Application examples

The first commercial wood gasification plant is being built in Grassau (Bavaria) with financial support of €850,000 from the Federal Ministry for the Environment.

Cost

Current stage of development

Entering the market 

Intellectual Property Rights

Patent applied for, Patent granted, Copyright protected, Exclusive rights

Country of origin

Germany

Country of application

Germany

Year

2010

National Contact Point

Daniel de Graaf
Umweltbundesamt
Wörlitzer Platz 1
06844 Dessau-Roßlau

Tel. +49 (0)340 21033407
Fax. +49 (0)340 21043407

» daniel.degraaf@uba.de
» www.uba.de