Integrated Biomass Hydropyrolysis and Hydrotreating: A Brief Review

Linck, Martin; Felix, Larry G.; Marker, Terry; Roberts, Michael J.

doi:10.1002/9781118957844.ch5

Cited by 4 publications

(6 citation statements)

References 13 publications

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“…A promising route is to combine pyrolysis [6] and hydrodeoxygenation (HDO) in a catalytic hydropyrolysis process [7]. When performing these reactions in a hydrogen-rich environment at high pressure [8], oxygen atoms are converted into water, carbon oxides and hydrocarbons before condensation of the bio-oil.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic analysis of polygeneration systems based on catalytic hydropyrolysis for the production of bio-oil and fuels

Clausen

2018

Energy Conversion and Management

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Novel polygeneration concepts based on catalytic hydropyrolysis and hydrodeoxygenation are presented and compared via process simulation and thermodynamic analysis. These systems process and convert biomass into high-quality bio-oil and fuels such as synthetic natural gas (SNG), molecular hydrogen (H 2) and methanol (MeOH). Twelve system layouts were evaluated and compared with regards to their energy demands and performances. Detailed thermodynamic models were developed, considering the different technological alternatives for the valorisation of bio-char, removal of carbon dioxide, fuel upgrading and water electrolysis, as well as the opportunities for energy integration. The results show that the standard system, which produces only bio-oil, reaches an energy efficiency of 61 % (LHV). This value can be increased by 7 to 28 %-points when co-producing SNG, 10 to 21 %-points when producing H 2 , and 10 to 19 %-points when producing MeOH. The highest values are achieved by co-production of SNG as light hydrocarbons are produced in the hydropyrolysis, and limited processing is therefore required to reach the desired product quality. High system efficiencies are possible mainly because of the high efficiency of the core hydropyrolysis process. Carbon conversion efficiencies are highest when generating SNG or MeOH and reach a maximum when electrolysis and char gasification are implemented (98 % and 95 %). The performance of these polygeneration systems is strongly impacted by the type of CO 2-separation process and electrolyser-these processes have a strong influence on the power and heating demands, as well as on the potential energy savings and waste heat valorisation.

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Section: Introductionmentioning

confidence: 99%

“…7: Process data of the investigated polygeneration system for production of bio-oil and synthetic natural gas, with physical absorption.…”

mentioning

confidence: 99%

Thermodynamic analysis of polygeneration systems based on catalytic hydropyrolysis for the production of bio-oil and fuels

Clausen

2018

Energy Conversion and Management

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“…configuration d in Figure 30) using unpublished, proprietary catalysts. The bio-oil can be integrated in the current infrastructure and the gas should be steam reformed to produce H2 for the process [21]. A proof of principle experimental investigation of the hydropyrolysis and HDO steps of the process showed that fast hydropyrolysis was possible with several different types of biomass feedstock with a time on stream of 2-3 h [363].…”

Section: Pilot Scale Fluid Bed and Cyclone Reactorsmentioning

confidence: 99%

“…While fast pyrolysis is used to increase the biomass energy density by producing a liquid product commonly referred to as bio-oil, which can be transported more easily than solid biomass, catalytic HDO is used to enhance the fuel properties through oxygen removal in a H2 atmosphere using a suitable catalyst. Another promising technology is the coupling of fast pyrolysis and HDO in catalytic fast hydropyrolysis, where the HDO is performed directly in the pyrolysis reactor [21].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, detailed mechanistic expressions developed for model compound HDO are limited to the specific model compound(s) of choice, and expanding this type of model for all bio-oil components is very complex. These compromises on accuracy and applicability of kinetic models are wellknown from conventional hydrotreating, where it has been shown that simple and generalized models (similar to equations(20) and(21)) are useful tools in the development and optimization of catalysts and reaction conditions[163].…”

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Transportation fuels from biomass fast pyrolysis, catalytic hydrodeoxygenation, and catalytic fast hydropyrolysis

Dabros¹,

Stummann²,

Høj³

et al. 2018

Progress in Energy and Combustion Science

221

147

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Is it possible to increase the oil yield of catalytic pyrolysis of biomass? A study using commercially-available acid and basic catalysts in ex-situ and in-situ modus

Castello¹,

Ruiz³

et al. 2019

Journal of Analytical and Applied Pyrolysis

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Integrated Biomass Hydropyrolysis and Hydrotreating: A Brief Review

Cited by 4 publications

References 13 publications

Thermodynamic analysis of polygeneration systems based on catalytic hydropyrolysis for the production of bio-oil and fuels

Thermodynamic analysis of polygeneration systems based on catalytic hydropyrolysis for the production of bio-oil and fuels

Transportation fuels from biomass fast pyrolysis, catalytic hydrodeoxygenation, and catalytic fast hydropyrolysis

Is it possible to increase the oil yield of catalytic pyrolysis of biomass? A study using commercially-available acid and basic catalysts in ex-situ and in-situ modus

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