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10 items by relevance
1 Conference paper

Hydrogen assisted catalytic biomass pyrolysis for green fuels

Stummann, Magnus Zingler; Høj, Martin; Gabrielsend, Jostein; Jensen, Peter Arendt; Jensen, Anker Degn

Fast pyrolysis of biomass produces a high yield of bio-oilthrough well-established technologies [1]. To utilize this oil as liquid fuel the oxygen content must be reduced from 15-30 wt.% down to <1 wt.%, which increases heating value and stability and decreases acidity [1]. Upgrading bio-oil by catalytic hydrodeoxygenation (HDO) is challenged by severe polymerization and coking upon heating the oil. Alternatively, performing fast pyrolysis in high-pressure hydrogen atmosphere in a fluid bedreactor with a HDO catalyst as bed medium, could immediately stabilize reactive pyrolysis vapors [2...

Year: 2018

Language: English

More...
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2 Conference paper

Hydrogen assisted catalytic biomass pyrolysis for green fuels

Stummann, Magnus Zingler; Høj, Martin; Gabrielsen, Jostein; Jensen, Peter Arendt; Jensen, Anker Degn

Book of Abstracts Sustain 2017 — 2017

Year: 2017

Language: English

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3 PhD Thesis

Hydrogen Assisted Catalytic Biomass Pyrolysis for Green Fuels

Stummann, Magnus Zingler

Technical University of Denmark — 2018

This thesis is dedicated to the investigation and optimization of catalytic hydropyrolysis of biomass for the production of renewable hydrocarbon fuels. This has been achieved through studying the effect of process conditions and the type of catalyst in the fluid bed hydropyrolysis reactor. The experiments were conducted in a bench scale setup up, where up to 1 kg of biomass, mainly beech wood, was continuously fed into a fluid bed reactor in a high pressure hydrogen atmosphere containing a catalytic material, which produces char, light gasses (COx, C1-C3), water, and oil. The char was remo...

Year: 2018

Language: English

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4 Conference paper

Hydrogen assisted catalytic biomass pyrolysis for green fuels

Stummann, Magnus Zingler; Høj, Martin; Schandel, Christian Bækhøj; Hansen, A. B.; Wiwel, P.; Jensen, Peter Arendt; et al. (2 more)

Fast pyrolysis of biomass is a well-known technology for producing bio-oil, however in order to use the oil as transportation fuel the oxygen content must be decreased from approximately 30 wt.% to below 1 wt.%. This can be achieved by catalytic hydrodeoxygenation (HDO). Unfortunately, deactivation due to coking of the catalyst is an inhibitive problem for this technology. The objective of the present work is to produce oxygen free gasoline and diesel from biomass by hydrogen assisted catalytic fast pyrolysis. Fast pyrolysis of beech wood has been performed in high-pressure hydrogen atmosph...

Year: 2017

Language: English

More...
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5 Conference paper

H2CAP - Hydrogen assisted catalytic biomass pyrolysis for green fuels

Stummann, Magnus Zingler; Høj, Martin; Gabrielsen, Jostein; Jensen, Peter Arendt; Jensen, Anker Degn

Year: 2016

Language: English

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6 Conference paper

H2CAP - Hydrogen assisted catalytic biomass pyrolysis for green fuels

Stummann, Magnus Zingler; Høj, Martin; Gabrielsen, Jostein; Jensen, Peter Arendt; Jensen, Anker Degn

Fast pyrolysis of biomass produces a high yield of bio-oil through well-established technologies [1]. To utilizethis oil as liquid fuel the oxygen content must be reduced from 15-30 wt.% down to <1 wt.%, which increases heating value and stability and decreases acidity [1]. Upgrading bio-oil by catalytic hydrodeoxygenation (HDO) is challenged by severe polymerization and coking upon heating the oil. Alternatively, performing fast pyrolysis in high-pressure hydrogen atmosphere in a fluid bed reactor with a HDO catalyst as bed medium, could immediately stabilize reactive pyrolysis vapors [...

Year: 2017

Language: English

More...
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7 Conference paper

H2CAP - Hydrogen Assisted Catalytic Biomass Pyrolysis for Green Fuels

Arndal, Trine Marie Hartmann; Stummann, Magnus Zingler; Høj, Martin; Jensen, Peter Arendt; Jensen, Anker Degn; Clausen, Lasse Røngaard; et al. (4 more)

Book of Abstracts. Dtu's Sustain Conference 2015 — 2015

Year: 2015

Language: English

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8 Conference paper

H2CAP - Hydrogen assisted catalytic biomass pyrolysis for green fuels

Stummann, Magnus Zingler; Høj, Martin; Gabrielsen, Jostein; Jensen, Peter Arendt; Jensen, Anker Degn

Fast pyrolysis of biomass produces a high yield of bio-oil through well-established technologies [1]. To utilize this oil as liquid fuel the oxygen content must be reduced from 15-30 wt.% down to <1 wt.%, which increases heating value and stability and decreases acidity [1]. Upgrading bio-oil by catalytic hydrodeoxygenation (HDO) is challenged by severe polymerization and coking upon heating the oil. Alternatively, performing fast pyrolysis in high-pressure hydrogen atmosphere in a fluid bed reactor with a HDO catalyst as bed medium could immediately stabilize reactive pyrolysis vapors [...

Year: 2017

Language: English

More...
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9 Conference paper

H2CAP – Hydrogen assisted catalytic biomass pyrolysis for green fuels

Stummann, Magnus Zingler; Høj, Martin; Gabrielsen, Jostein; Jensen, Peter Arendt; Jensen, Anker Degn

Biomass such as wood, straw and energy crops are considered renewable sources of carbonaceous fuels,however biomass is still a limited resource. It is therefore desirable to utilize biomass where no other sourceof renewable energy is readily available, such as fuels for the transportation sector. The objective of thepresent work is to convert biomass into gasoline and diesel. Fast pyrolysis of beech wood have beenconducted at high hydrogen pressure in a fluid bed reactor with a hydrodeoxygenation (HDO) catalyst asbed medium followed by a fixed bed HDO reactor for complete oxygen removal bef...

Year: 2017

Language: English

More...
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10 Conference paper

Hydrogen assisted catalytic biomass pyrolysis for green fuels. Effect of catalyst in the fluid bed

Stummann, M. Z.; Høj, M.; Davidsen, B.; Hansen, A. B.; Wiwel, P.; Jensen, P. A.; et al. (2 more)

, deactivation due to coking of the catalyst is an inhibitive problem for this technology. The objective of the present work is to produce oxygen free gasoline and diesel from biomass by hydrogen assisted catalytic fast pyrolysis. Fast pyrolysis of beech wood (feeding rate: 275 g/h) has been performed in 26 bar

Year: 2018

Language: English

More...
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