Effect of fuel blend composition on hydrogen yield in co-gasification of coal and non-woody biomass

Küçük Resim Yok

Tarih

2020

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Elsevier Ltd

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

In this study, torrefaction of sunflower seed cake and hydrogen production from torrefied sunflower seed cake via steam gasification were investigated. Torrefaction experiments were performed at 250, 300 and 350 °C for different times (10–30 min). Torrefaction at 300 °C for 30 min was selected to be optimum condition, considering the mass yield and energy densification ratio. Steam gasification of lignite, raw- and torrefied biomass, and their blends at different ratios were conducted at downdraft fixed bed reactor. For comparison, gasification experiments with pyrochar obtained at 500 °C were also performed. The maximum hydrogen yield of 100 mol/kg fuel was obtained steam gasification of pyrochar. The hydrogen yields of 84 and 75 mol/kg fuel were obtained from lignite and torrefied biomass, respectively. Remarkable synergic effect exhibited in co-gasification of lignite with raw biomass or torrefied biomass at a blending ratio of 1:1. In co-gasification, the highest hydrogen yield of 110 mol/kg fuel was obtained from torrefied biomass-lignite (1:1) blend, while a hydrogen yield from pyrochar-lignite (1:1) blend was 98 mol/kg. The overall results showed that in co-gasification of lignite with biomass, the yields of hydrogen depend on the volatiles content of raw biomass/torrefied biomass, besides alkaline earth metals (AAEMs) content. © 2019 Hydrogen Energy Publications LLC

Açıklama

Anahtar Kelimeler

Co-gasification, Hydrogen, Steam gasification, Torrefaction, Biomass, Blending, Chemical reactors, Gasification, Hydrogen, Hydrogen fuels, Lignite, Steam, Co-gasification, Downdraft fixed beds, Optimum conditions, Steam gasification, Sunflower seeds, Synergic effects, Torrefaction, Volatiles content, Hydrogen production

Kaynak

International Journal of Hydrogen Energy

WoS Q Değeri

Scopus Q Değeri

Q1

Cilt

45

Sayı

5

Künye