Paper details

Title:

Hydrogen Production from Pyrolysis-Catalytic Steam Reforming of Biomass: Influence of Reforming Temperature

Author(s):

Arregi, A., Lopez, G., Amutio, M., Artetxe, M., Erkiaga, A., Alvarez, J., Barbarias, I., Olazar, M.

Document(s):

Abstract:

Hydrogen production from catalytic steam reforming of volatile products from biomass pyrolysis has been investigated using a reaction system provided with two steps in series: i) pyrolysis of sawdust (1­2 mm) at 500 ºC in a conical spouted bed reactor, and ii) subsequent step of catalytic steam reforming of the pyrolysis oils and gases in a fluidized bed over a commercial Ni reforming catalyst (Reformax 330). The effect of temperature of the second step on the carbon conversion, product yields and catalyst deactivation has been studied in the 550 to 700 ºC range, with space­time of 0.28 gcatalyst h (gbiomass)­1 and S/C (steam/carbon) ratio of 8.2. High initial conversion of pyrolysis products is achieved above 600 ºC (> 99.7 %). The initial carbon conversion, initial H2 yield and catalyst deactivation are not significantly affected by temperature, obtaining a maximum hydrogen yield of 93.5 % at 600 ºC. The cause of catalyst deactivation is the coke formed in the second step, which is attenuated by its in­situ gasification using a fluidized bed.

Keywords:

biomass, flash pyrolysis, hydrogen, fluidized bed, reforming

Topic:

Biomass Conversion Technologies for Intermediates, Liquid and Gaseous Fuels, Chemicals and Materials

Subtopic:

Pyrolysis and other biomass liquefaction technologies

Event:

22nd European Biomass Conference and Exhibition

Session:

3CO.10.4

Pages:

920 - 924

ISBN:

978-88-89407-52-3

Paper DOI:

10.5071/22ndEUBCE2014-3CO.10.4

Price:

FREE