Co-processing of upgraded bio-liquids in standard refinery units - fundamentals

Andrea Gutierrez, Marcelo E. Domine, Yrjö Solantausta

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

A consortium has been assembled to develop a new bio fuel chain from renewable feeds to transportation fuels. The concept includes a distributed procurement for biomass and centralized upgrading for derived fast pyrolysis liquids. The project is aimed at developing a chain of process steps to allow a range of biomass feedstocks to be co-fed to a conventional oil refinery to produce energy and chemicals. This paper summarises some fundamental issues related to this new concept. Fast pyrolysis liquids, or bio-oils, are complex mixtures of oxygen containing compounds. Their high oxygen content is responsible for high viscosity, poor thermal stability, low heating value and corrosivity. These properties can be improved by partial or total elimination of oxygen and hydrogenation of chemical structures. Hydrodeoxygenation performed at high temperatures and pressures in the presence of a catalyst is proposed as an alternative for upgrading of bio-oils. After upgrading, bio-oils should be co-fed to a conventional refinery. The viability is evaluated by using lab-scale micro tests simulating hydrotreating and catalytic cracking (FCC) units under standard operating conditions. Alumina supported CoMo and NiMo catalysts were tested in the hydrotreating of a straight run gas oil fraction. Total conversion of sulfur compounds was achieved, even in the presence of oxygenated model compounds representative of bio-oil. Preliminary co-processing study was also performed in simulated FCC units. The performance of industrial FCC catalysts was evaluated by feeding model hydrocarbons/oxygenates mixtures. The cracking reaction and the effect of oxygenates is evaluated in terms of hydrocarbon conversion, product distribution, and catalyst stability. Development of these and other unit operations within the overall biofuel chain will continue.
Original languageEnglish
Title of host publicationProceedings of the 15th European Biomass Conference and Exhibition 
Publication statusPublished - 2007
MoE publication typeA4 Article in a conference publication
Event15th European Biomass Conference & Exhibition - Berlin, Germany
Duration: 7 May 200711 May 2007
Conference number: 15

Conference

Conference15th European Biomass Conference & Exhibition
CountryGermany
CityBerlin
Period7/05/0711/05/07

Fingerprint

Liquids
Processing
Catalysts
Oxygen
Biomass
Pyrolysis
Hydrocarbons
Catalytic cracking
Sulfur compounds
Biofuels
Gas oils
Feedstocks
Hydrogenation
Thermodynamic stability
Alumina
Oils
Viscosity
Heating
Temperature

Keywords

  • bio-refinery
  • co-processing
  • biomass
  • pyrolysis oils
  • bio-oils
  • upgrading
  • hydrodeoxygenation
  • hydrotreating
  • sulfided catalysts

Cite this

Gutierrez, A., Domine, M. E., & Solantausta, Y. (2007). Co-processing of upgraded bio-liquids in standard refinery units - fundamentals. In Proceedings of the 15th European Biomass Conference and Exhibition 
Gutierrez, Andrea ; Domine, Marcelo E. ; Solantausta, Yrjö. / Co-processing of upgraded bio-liquids in standard refinery units - fundamentals. Proceedings of the 15th European Biomass Conference and Exhibition . 2007.
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year = "2007",
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Gutierrez, A, Domine, ME & Solantausta, Y 2007, Co-processing of upgraded bio-liquids in standard refinery units - fundamentals. in Proceedings of the 15th European Biomass Conference and Exhibition . 15th European Biomass Conference & Exhibition, Berlin, Germany, 7/05/07.

Co-processing of upgraded bio-liquids in standard refinery units - fundamentals. / Gutierrez, Andrea; Domine, Marcelo E.; Solantausta, Yrjö.

Proceedings of the 15th European Biomass Conference and Exhibition . 2007.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

TY - GEN

T1 - Co-processing of upgraded bio-liquids in standard refinery units - fundamentals

AU - Gutierrez, Andrea

AU - Domine, Marcelo E.

AU - Solantausta, Yrjö

PY - 2007

Y1 - 2007

N2 - A consortium has been assembled to develop a new bio fuel chain from renewable feeds to transportation fuels. The concept includes a distributed procurement for biomass and centralized upgrading for derived fast pyrolysis liquids. The project is aimed at developing a chain of process steps to allow a range of biomass feedstocks to be co-fed to a conventional oil refinery to produce energy and chemicals. This paper summarises some fundamental issues related to this new concept. Fast pyrolysis liquids, or bio-oils, are complex mixtures of oxygen containing compounds. Their high oxygen content is responsible for high viscosity, poor thermal stability, low heating value and corrosivity. These properties can be improved by partial or total elimination of oxygen and hydrogenation of chemical structures. Hydrodeoxygenation performed at high temperatures and pressures in the presence of a catalyst is proposed as an alternative for upgrading of bio-oils. After upgrading, bio-oils should be co-fed to a conventional refinery. The viability is evaluated by using lab-scale micro tests simulating hydrotreating and catalytic cracking (FCC) units under standard operating conditions. Alumina supported CoMo and NiMo catalysts were tested in the hydrotreating of a straight run gas oil fraction. Total conversion of sulfur compounds was achieved, even in the presence of oxygenated model compounds representative of bio-oil. Preliminary co-processing study was also performed in simulated FCC units. The performance of industrial FCC catalysts was evaluated by feeding model hydrocarbons/oxygenates mixtures. The cracking reaction and the effect of oxygenates is evaluated in terms of hydrocarbon conversion, product distribution, and catalyst stability. Development of these and other unit operations within the overall biofuel chain will continue.

AB - A consortium has been assembled to develop a new bio fuel chain from renewable feeds to transportation fuels. The concept includes a distributed procurement for biomass and centralized upgrading for derived fast pyrolysis liquids. The project is aimed at developing a chain of process steps to allow a range of biomass feedstocks to be co-fed to a conventional oil refinery to produce energy and chemicals. This paper summarises some fundamental issues related to this new concept. Fast pyrolysis liquids, or bio-oils, are complex mixtures of oxygen containing compounds. Their high oxygen content is responsible for high viscosity, poor thermal stability, low heating value and corrosivity. These properties can be improved by partial or total elimination of oxygen and hydrogenation of chemical structures. Hydrodeoxygenation performed at high temperatures and pressures in the presence of a catalyst is proposed as an alternative for upgrading of bio-oils. After upgrading, bio-oils should be co-fed to a conventional refinery. The viability is evaluated by using lab-scale micro tests simulating hydrotreating and catalytic cracking (FCC) units under standard operating conditions. Alumina supported CoMo and NiMo catalysts were tested in the hydrotreating of a straight run gas oil fraction. Total conversion of sulfur compounds was achieved, even in the presence of oxygenated model compounds representative of bio-oil. Preliminary co-processing study was also performed in simulated FCC units. The performance of industrial FCC catalysts was evaluated by feeding model hydrocarbons/oxygenates mixtures. The cracking reaction and the effect of oxygenates is evaluated in terms of hydrocarbon conversion, product distribution, and catalyst stability. Development of these and other unit operations within the overall biofuel chain will continue.

KW - bio-refinery

KW - co-processing

KW - biomass

KW - pyrolysis oils

KW - bio-oils

KW - upgrading

KW - hydrodeoxygenation

KW - hydrotreating

KW - sulfided catalysts

M3 - Conference article in proceedings

SN - 978-88-89407-59-X

SN - 978-8889407-59-2

BT - Proceedings of the 15th European Biomass Conference and Exhibition 

ER -

Gutierrez A, Domine ME, Solantausta Y. Co-processing of upgraded bio-liquids in standard refinery units - fundamentals. In Proceedings of the 15th European Biomass Conference and Exhibition . 2007