Abstract
Torrefaction is considered to be a pre-treatment technology to make biomass more suitable for co-firing applications. Especially, the improved grindability of biomass after torrefaction may enable higher co-firing rates in the near future. Torrefaction is, however, a technology that is not commercially available yet. This work contributed to the development of torrefaction by means of extensive parametric research, process simulations and process design. Experimental work has revealed that torrefied biomass can be produced with a grindability comparable to coal and with a combustion reactivity comparable to wood. The process can be operated at high process energy efficiency; typically 96% thermal efficiency and 92% net process efficiency (including the internal electricity consumption). Reactor technology based on moving-bed principles is identified very promising reactor for torrefaction. A production plant of 60-kton/a product requires a capital investment of 5.2 to 6.3 Meuro. The total production costs amount in the range of 40 to 56 euro/ton product (excluding feedstock costs), which is 2 to 2.8 euro/GJ. It is recommended to further develop moving-bed technology for torrefaction by means of pilot-scale testing (prototype) and to investigate other important product properties such as hydrophobic nature and leeching behaviour in relation to operating conditions.
Citation Formats
Bergman, P C.A., Boersma, A R, Zwart, R W.R., and Kiel, J H.A.
Torrefaction for biomass co-firing in existing coal-fired power stations. BIOCOAL.
Netherlands: N. p.,
2005.
Web.
Bergman, P C.A., Boersma, A R, Zwart, R W.R., & Kiel, J H.A.
Torrefaction for biomass co-firing in existing coal-fired power stations. BIOCOAL.
Netherlands.
Bergman, P C.A., Boersma, A R, Zwart, R W.R., and Kiel, J H.A.
2005.
"Torrefaction for biomass co-firing in existing coal-fired power stations. BIOCOAL."
Netherlands.
@misc{etde_20670903,
title = {Torrefaction for biomass co-firing in existing coal-fired power stations. BIOCOAL}
author = {Bergman, P C.A., Boersma, A R, Zwart, R W.R., and Kiel, J H.A.}
abstractNote = {Torrefaction is considered to be a pre-treatment technology to make biomass more suitable for co-firing applications. Especially, the improved grindability of biomass after torrefaction may enable higher co-firing rates in the near future. Torrefaction is, however, a technology that is not commercially available yet. This work contributed to the development of torrefaction by means of extensive parametric research, process simulations and process design. Experimental work has revealed that torrefied biomass can be produced with a grindability comparable to coal and with a combustion reactivity comparable to wood. The process can be operated at high process energy efficiency; typically 96% thermal efficiency and 92% net process efficiency (including the internal electricity consumption). Reactor technology based on moving-bed principles is identified very promising reactor for torrefaction. A production plant of 60-kton/a product requires a capital investment of 5.2 to 6.3 Meuro. The total production costs amount in the range of 40 to 56 euro/ton product (excluding feedstock costs), which is 2 to 2.8 euro/GJ. It is recommended to further develop moving-bed technology for torrefaction by means of pilot-scale testing (prototype) and to investigate other important product properties such as hydrophobic nature and leeching behaviour in relation to operating conditions.}
place = {Netherlands}
year = {2005}
month = {Jul}
}
title = {Torrefaction for biomass co-firing in existing coal-fired power stations. BIOCOAL}
author = {Bergman, P C.A., Boersma, A R, Zwart, R W.R., and Kiel, J H.A.}
abstractNote = {Torrefaction is considered to be a pre-treatment technology to make biomass more suitable for co-firing applications. Especially, the improved grindability of biomass after torrefaction may enable higher co-firing rates in the near future. Torrefaction is, however, a technology that is not commercially available yet. This work contributed to the development of torrefaction by means of extensive parametric research, process simulations and process design. Experimental work has revealed that torrefied biomass can be produced with a grindability comparable to coal and with a combustion reactivity comparable to wood. The process can be operated at high process energy efficiency; typically 96% thermal efficiency and 92% net process efficiency (including the internal electricity consumption). Reactor technology based on moving-bed principles is identified very promising reactor for torrefaction. A production plant of 60-kton/a product requires a capital investment of 5.2 to 6.3 Meuro. The total production costs amount in the range of 40 to 56 euro/ton product (excluding feedstock costs), which is 2 to 2.8 euro/GJ. It is recommended to further develop moving-bed technology for torrefaction by means of pilot-scale testing (prototype) and to investigate other important product properties such as hydrophobic nature and leeching behaviour in relation to operating conditions.}
place = {Netherlands}
year = {2005}
month = {Jul}
}