Calcium addition in straw gasification

H. Risnes; J. Fjellerup; U. Henriksen; Antero Moilanen; P. Norby; K. Papadakis; D. Posselt; L. Sorensen

doi:10.1016/S0016-2361(02)00337-X

Calcium addition in straw gasification

H. Risnes
, J. Fjellerup
, U. Henriksen
, Antero Moilanen
, P. Norby
, K. Papadakis
, D. Posselt
, L. Sorensen

VTT Technical Research Centre of Finland

Norwegian University of Science and Technology (NTNU)
ReaTech
Technical University of Denmark (DTU)
University of Oslo
Roskilde University

Research output: Contribution to journal › Article › Scientific › peer-review

100 Citations (Scopus)

Abstract

The present work focuses on the influence of calcium addition in gasification. The inorganic–organic element interaction as well as the detailed inorganic–inorganic elements interaction has been studied.
The effect of calcium addition as calcium sugar/molasses solutions to straw significantly affected the ash chemistry and the ash sintering tendency but much less the char reactivity.
Thermo balance test are made and high-temperature X-ray diffraction measurements are performed, the experimental results indicate that with calcium addition major inorganic–inorganic reactions take place very late in the char conversion process.
Comprehensive global equilibrium calculations predicted important characteristics of the inorganic ash residue.
Equilibrium calculations predict the formation of liquid salt if sufficient amounts of Ca are added and according to experiments as well as calculations calcium binds silicon primarily as calcium silicates and less as potassium calcium silicates.

Original language	English
Pages (from-to)	641-651
Journal	Fuel
Volume	82
Issue number	6
DOIs	https://doi.org/10.1016/S0016-2361(02)00337-X
Publication status	Published - 2002
MoE publication type	A1 Journal article-refereed

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

ash sintering
global equilibrium calculations
gasification

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10.1016/S0016-2361(02)00337-X

Cite this

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title = "Calcium addition in straw gasification",

abstract = "The present work focuses on the influence of calcium addition in gasification. The inorganic–organic element interaction as well as the detailed inorganic–inorganic elements interaction has been studied. The effect of calcium addition as calcium sugar/molasses solutions to straw significantly affected the ash chemistry and the ash sintering tendency but much less the char reactivity. Thermo balance test are made and high-temperature X-ray diffraction measurements are performed, the experimental results indicate that with calcium addition major inorganic–inorganic reactions take place very late in the char conversion process. Comprehensive global equilibrium calculations predicted important characteristics of the inorganic ash residue. Equilibrium calculations predict the formation of liquid salt if sufficient amounts of Ca are added and according to experiments as well as calculations calcium binds silicon primarily as calcium silicates and less as potassium calcium silicates.",

keywords = "ash sintering, global equilibrium calculations, gasification",

author = "H. Risnes and J. Fjellerup and U. Henriksen and Antero Moilanen and P. Norby and K. Papadakis and D. Posselt and L. Sorensen",

year = "2002",

doi = "10.1016/S0016-2361(02)00337-X",

language = "English",

volume = "82",

pages = "641--651",

journal = "Fuel",

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}

TY - JOUR

T1 - Calcium addition in straw gasification

AU - Risnes, H.

AU - Fjellerup, J.

AU - Henriksen, U.

AU - Moilanen, Antero

AU - Norby, P.

AU - Papadakis, K.

AU - Posselt, D.

AU - Sorensen, L.

PY - 2002

Y1 - 2002

N2 - The present work focuses on the influence of calcium addition in gasification. The inorganic–organic element interaction as well as the detailed inorganic–inorganic elements interaction has been studied. The effect of calcium addition as calcium sugar/molasses solutions to straw significantly affected the ash chemistry and the ash sintering tendency but much less the char reactivity. Thermo balance test are made and high-temperature X-ray diffraction measurements are performed, the experimental results indicate that with calcium addition major inorganic–inorganic reactions take place very late in the char conversion process. Comprehensive global equilibrium calculations predicted important characteristics of the inorganic ash residue. Equilibrium calculations predict the formation of liquid salt if sufficient amounts of Ca are added and according to experiments as well as calculations calcium binds silicon primarily as calcium silicates and less as potassium calcium silicates.

AB - The present work focuses on the influence of calcium addition in gasification. The inorganic–organic element interaction as well as the detailed inorganic–inorganic elements interaction has been studied. The effect of calcium addition as calcium sugar/molasses solutions to straw significantly affected the ash chemistry and the ash sintering tendency but much less the char reactivity. Thermo balance test are made and high-temperature X-ray diffraction measurements are performed, the experimental results indicate that with calcium addition major inorganic–inorganic reactions take place very late in the char conversion process. Comprehensive global equilibrium calculations predicted important characteristics of the inorganic ash residue. Equilibrium calculations predict the formation of liquid salt if sufficient amounts of Ca are added and according to experiments as well as calculations calcium binds silicon primarily as calcium silicates and less as potassium calcium silicates.

KW - ash sintering

KW - global equilibrium calculations

KW - gasification

U2 - 10.1016/S0016-2361(02)00337-X

DO - 10.1016/S0016-2361(02)00337-X

M3 - Article

SN - 0016-2361

VL - 82

SP - 641

EP - 651

JO - Fuel

JF - Fuel

IS - 6

ER -

Calcium addition in straw gasification

Abstract

UN SDGs

Keywords

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