Process Design And Economics For Conversion Of Lignocellulosic Biomass To Ethanol
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Process Design And Economics For Conversion Of Lignocellulosic Biomass To Ethanol
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Author :
language : en
Publisher:
Release Date : 2011
Process Design And Economics For Conversion Of Lignocellulosic Biomass To Ethanol written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Biomass conversion categories.
This design report describes an up-to-date benchmark thermochemical conversion process that incorporates the latest research from NREL and other sources. Building on a design report published in 2007, NREL and its subcontractor Harris Group Inc. performed a complete review of the process design and economic model for a biomass-to-ethanol process via indirect gasification. The conceptual design presented herein considers the economics of ethanol production, assuming the achievement of internal research targets for 2012 and nth-plant costs and financing.
Process Design And Economics For Conversion Of Lignocellulosic Biomass To Ethanol
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Author :
language : en
Publisher:
Release Date : 2011
Process Design And Economics For Conversion Of Lignocellulosic Biomass To Ethanol written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Process Design And Economics For Biochemical Conversion Of Lignocellulosic Biomass To Ethanol
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Author :
language : en
Publisher:
Release Date : 2011
Process Design And Economics For Biochemical Conversion Of Lignocellulosic Biomass To Ethanol written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Process Design And Economics For Conversion Of Lignocellulosic Biomass To Ethanol
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Author : National Renewable Energy Laboratory (Nr
language : en
Publisher: Scholar's Choice
Release Date : 2015-02-15
Process Design And Economics For Conversion Of Lignocellulosic Biomass To Ethanol written by National Renewable Energy Laboratory (Nr and has been published by Scholar's Choice this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-02-15 with categories.
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Process Design And Economics For Biochemical Conversion Of Lignocellulosic Biomass To Ethanol
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Author :
language : en
Publisher:
Release Date : 2011
Process Design And Economics For Biochemical Conversion Of Lignocellulosic Biomass To Ethanol written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Alcohol as fuel categories.
This report describes one potential biochemical ethanol conversion process, conceptually based upon core conversion and process integration research at NREL. The overarching process design converts corn stover to ethanol by dilute-acid pretreatment, enzymatic saccharification, and co-fermentation. Building on design reports published in 2002 and 1999, NREL, together with the subcontractor Harris Group Inc., performed a complete review of the process design and economic model for the biomass-to-ethanol process. This update reflects NREL's current vision of the biochemical ethanol process and includes the latest research in the conversion areas (pretreatment, conditioning, saccharification, and fermentation), optimizations in product recovery, and our latest understanding of the ethanol plant's back end (wastewater and utilities). The conceptual design presented here reports ethanol production economics as determined by 2012 conversion targets and "nth-plant" project costs and financing. For the biorefinery described here, processing 2,205 dry ton/day at 76% theoretical ethanol yield (79 gal/dry ton), the ethanol selling price is $2.15/gal in 2007 dollars.
Process Design And Economics For The Conversion Of Lignocellulosic Biomass To Hydrocarbon Fuels And Coproducts 2018 Biochemical Design Case Update Biochemical Deconstruction And Conversion Of Biomass To Fuels And Products Via Integrated Biorefinery Pathways
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Author :
language : en
Publisher:
Release Date : 2018
Process Design And Economics For The Conversion Of Lignocellulosic Biomass To Hydrocarbon Fuels And Coproducts 2018 Biochemical Design Case Update Biochemical Deconstruction And Conversion Of Biomass To Fuels And Products Via Integrated Biorefinery Pathways written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Over the past decade, NREL conducted a campaign to quantify the economic implications associated with observed and future targeted performance for the biochemical conversion of corn stover to ethanol through techno-economic modeling. This report serves as an update to the biological sugar conversion approach, reflecting modifications to underlying conversion operational strategies, as well as refinements to the techno-economic model details. In addition, the report includes a more quantitative focus on envisioned processing requirements for achieving final fuel cost goals moving further into the future, via inclusion of value-added coproducts.
Lignocellulosic Biomass To Ethanol Process Design And Economics Utilizing Co Current Dilute Acid Prehydrolysis And Enzymatic Hydrolysis For Corn Stover
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Author :
language : en
Publisher:
Release Date : 2002
Lignocellulosic Biomass To Ethanol Process Design And Economics Utilizing Co Current Dilute Acid Prehydrolysis And Enzymatic Hydrolysis For Corn Stover written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
This report is an update of NREL's ongoing process design and economic analyses of processes related to developing ethanol from lignocellulosic feedstocks. The U.S. Department of Energy (DOE) is promoting the development of ethanol from lignocellulosic feedstocks as an alternative to conventional petroleum-based transportation fuels. DOE funds both fundamental and applied research in this area and needs a method for predicting cost benefits of many research proposals. To that end, the National Renewable Energy Laboratory (NREL) has modeled many potential process designs and estimated the economics of each process during the last 20 years. This report is an update of the ongoing process design and economic analyses at NREL. We envision updating this process design report at regular intervals; the purpose being to ensure that the process design incorporates all new data from NREL research, DOE funded research and other sources, and that the equipment costs are reasonable and consistent with good engineering practice for plants of this type. For the non-research areas this means using equipment and process approaches as they are currently used in industrial applications. For the last report, published in 1999, NREL performed a complete review and update of the process design and economic model for the biomass-to-ethanol process utilizing co-current dilute acid prehydrolysis with simultaneous saccharification (enzymatic) and co-fermentation. The process design included the core technologies being researched by the DOE: prehydrolysis, simultaneous saccharification and co-fermentation, and cellulase enzyme production. In addition, all ancillary areas--feed handling, product recovery and purification, wastewater treatment (WWT), lignin combustor and boiler-turbogenerator, and utilities--were included. NREL engaged Delta-T Corporation (Delta-T) to assist in the process design evaluation, the process equipment costing, and overall plant integration. The process design and costing for the lignin combustor and boiler turbogenerator was reviewed by Reaction Engineering Inc. (REI) and Merrick & Company reviewed the wastewater treatment. Since then, NREL has engaged Harris Group (Harris) to perform vendor testing, process design, and costing of critical equipment identified during earlier work. This included solid/liquid separation and pretreatment reactor design and costing. Corn stover handling was also investigated to support DOE's decision to focus on corn stover as a feedstock for lignocellulosic ethanol. Working with Harris, process design and costing for these areas were improved through vendor designs, costing, and vendor testing in some cases. In addition to this work, enzyme costs were adjusted to reflect collaborative work between NREL and enzyme manufacturers (Genencor International and Novozymes Biotech) to provide a delivered enzyme for lignocellulosic feedstocks. This report is the culmination of our work and represents an updated process design and cost basis for the process using a corn stover feedstock. The process design and economic model are useful for predicting the cost benefits of proposed research. Proposed research results can be translated into modifications of the process design, and the economic impact can be assessed. This allows DOE, NREL, and other researchers to set priorities on future research with an understanding of potential reductions to the ethanol production cost. To be economically viable, ethanol production costs must be below market values for ethanol. DOE has chosen a target ethanol selling price of $1.07 per gallon as a goal for 2010. The conceptual design and costs presented here are based on a 2010 plant start-up date. The key research targets required to achieve this design and the $1.07 value are discussed in the report.
Process Design And Economics For The Conversion Of Lignocellulosic Biomass To Hydrocarbons Via Indirect Liquefaction Thermochemical Research Pathway To High Octane Gasoline Blendstock Through Methanol Dimethyl Ether Intermediates
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Author :
language : en
Publisher:
Release Date : 2015
Process Design And Economics For The Conversion Of Lignocellulosic Biomass To Hydrocarbons Via Indirect Liquefaction Thermochemical Research Pathway To High Octane Gasoline Blendstock Through Methanol Dimethyl Ether Intermediates written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
This report was developed as part of the U.S. Department of Energy's Bioenergy Technologies Office's (BETO's) efforts to enable the development of technologies for the production of infrastructure-compatible, cost-competitive liquid hydrocarbon fuels from lignocellulosic biomass feedstocks. The research funded by BETO is designed to advance the state of technology of biomass feedstock supply and logistics, conversion, and overall system sustainability. It is expected that these research improvements will be made within the 2022 timeframe. As part of their involvement in this research and development effort, the National Renewable Energy Laboratory and the Pacific Northwest National Laboratory investigate the economics of conversion pathways through the development of conceptual biorefinery process models and techno-economic analysis models. This report describes in detail one potential conversion process for the production of high-octane gasoline blendstock via indirect liquefaction of biomass. The processing steps of this pathway include the conversion of biomass to synthesis gas or syngas via indirect gasification, gas cleanup, catalytic conversion of syngas to methanol intermediate, methanol dehydration to dimethyl ether (DME), and catalytic conversion of DME to high-octane, gasoline-range hydrocarbon blendstock product. The conversion process configuration leverages technologies previously advanced by research funded by BETO and demonstrated in 2012 with the production of mixed alcohols from biomass. Biomass-derived syngas cleanup via reforming of tars and other hydrocarbons is one of the key technology advancements realized as part of this prior research and 2012 demonstrations. The process described in this report evaluates a new technology area for the downstream utilization of clean biomass-derived syngas for the production of high-octane hydrocarbon products through methanol and DME intermediates. In this process, methanol undergoes dehydration to DME, which is subsequently converted via homologation reactions to high-octane, gasoline-range hydrocarbon products.
Lignocellulosic Biomass To Ethanol Process Design And Economics Utilizing Co Current Dilute Acid Prehydrolysis And Enzymatic Hydrolysis Current And Future Scenarios
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Author :
language : en
Publisher:
Release Date : 1999
Lignocellulosic Biomass To Ethanol Process Design And Economics Utilizing Co Current Dilute Acid Prehydrolysis And Enzymatic Hydrolysis Current And Future Scenarios written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
The National Renewable Energy Laboratory (NREL) has undertaken a complete review and update of the process design and economic model for the biomass-to-ethanol enzymatic based process. The process design includes the core technologies being researched by the U.S. Department of Energy (DOE): prehydrolysis, simultaneous saccharification and co-fermentation, and cellulase enzyme production. Inaddition, all ancillary areas--feed handling, product recovery and purification, wastewater treatment lignin burner and boiler-turbogenerator, and utilities--are included. NREL engaged Delta-T Corporation to assist in the process design evaluation, equipment costing and overal plant integration. The process design and costing for the lignin burner and boiler turbogenerator has been reviewed byReaction Engineering, Inc. and the wastewater treatment by Merrick & Company. An overview of both reviews is included here. The purpose of this update was to ensure that the process design and equipment costs were reasonable and consistent with good engineering practice for plants of this type using available technical data. This work has resulted in an economic model that can be used to predictthe cost of producing ethanol from cellulosic biomass using this technology if a plant were to be built in the next few years. The model was also extended using technology improvements that are expected to be developed based on the current DOE research plan. Future process designs and cost estimates are given for the year 2005, 2010, 2015.
Process Design And Economics For The Conversion Of Lignocellulosic Biomass To Hydrocarbon Fuels Thermochemical Research Pathways With In Situ And Ex Situ Upgrading Of Fast Pyrolysis Vapors
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Author :
language : en
Publisher:
Release Date : 2015
Process Design And Economics For The Conversion Of Lignocellulosic Biomass To Hydrocarbon Fuels Thermochemical Research Pathways With In Situ And Ex Situ Upgrading Of Fast Pyrolysis Vapors written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
This report was developed as part of the U.S. Department of Energy's Bioenergy Technologies Office's efforts to enable the development of technologies for the production of infrastructurecompatible, cost-competitive liquid hydrocarbon fuels from biomass. Specifically, this report details two conceptual designs based on projected product yields and quality improvements via catalyst development and process integration. It is expected that these research improvements will be made within the 2022 timeframe. The two conversion pathways detailed are (1) in situ and (2) ex situ upgrading of vapors produced from the fast pyrolysis of biomass. While the base case conceptual designs and underlying assumptions outline performance metrics for feasibility, it should be noted that these are only two of many other possibilities in this area of research. Other promising process design options emerging from the research will be considered for future techno-economic analysis.