Paper details

Title:

Hydrogen Production within a Polygeneration Concept Based on Dual Fluidized Bed Biomass Steam Gasification

Author(s):

Kraussler, M., Schindler, P., Binder, M., Hofbauer, H.

Document(s):

Abstract:

The dual fluidized bed biomass steam gasification technology generates a high calorific, practically nitrogen free product gas with a volumetric H2 content of about 40 %. Therefore, this technology could be a promising route for a Polygeneration concept which aims the production of valuable gases (for example H2), electricity, and heat. In this paper, a lab-scale process chain, based on state of the art unit operations, which processed a tar-rich product gas from a commercial dual fluidized bed biomass steam gasification plant, is investigated regarding H2 production within a Polygeneration concept. The lab-scale process chain employed a water gas shift unit, two gas scrubbing units, and a pressure swing adsorption unit using activated carbon as adsorbent in order to separate H2 from the other gas components. During the investigations, a volumetric H2 concentration of 99.9 % with a specific H2 production of 30 g kg-1 biomass was reached. In addition, a valuable off-gas stream with a lower heating value of 7.9 MJ m-3 was produced. These results show that the dual fluidized bed steam gasification technology is a promising route for a Polygeneration concept which aims the production of H2, electricity, and district heat.

Keywords:

biomass, dual fluidized beds, hydrogen, product gas, steam gasification, polygeneration

Topic:

Industry Sessions

Subtopic:

Biochemical Conversion

Event:

24th European Biomass Conference and Exhibition

Session:

ICO.12.4

Pages:

1715 - 1721

ISBN:

978-88-89407-165

Paper DOI:

10.5071/24thEUBCE2016-ICO.12.4

Price:

FREE