The Experts below are selected from a list of 168360 Experts worldwide ranked by ideXlab platform
Nathan L Brown - One of the best experts on this subject based on the ideXlab platform.
-
a feedstock readiness level tool to complement the aviation industry fuel readiness level tool
Bioenergy Research, 2012Co-Authors: Jeffrey J Steiner, Kristin C Lewis, Harry S Baumes, Nathan L BrownAbstract:The Feedstock Readiness Level (FSRL) tool was developed by the US Department of Agriculture, US Federal Aviation Administration, and Research and Innovative Technology Administration to describe the steps involved in bringing plant-based Feedstocks to market for aviation biofuels production. A candidate feedstock is assigned a FSRL level from 1 through 9, indicating an increasing level of maturity towards commercialization. The FSRL level also communicates the state of development of a feedstock concurrent with its readiness for use with a conversion process. There are four components to the FSRL (production, market, policy, and linkage to conversion process), each with one to four tollgate descriptions per readiness level. The FSRL tool was structured to complement the Fuel Readiness Level (FRL) tool in use by the aviation industry as an internationally recognized communication best practice. Similarly, the FSRL can be used to identify gaps in any feedstock supply chain designed for any biofuel or conversion process that provides a market for Feedstocks. This integrated feedstock and conversion technology approach can facilitate a coordinated allocation of resources to effectively plan for and develop a viable aviation biofuels industry.
Jeffrey J Steiner - One of the best experts on this subject based on the ideXlab platform.
-
a feedstock readiness level tool to complement the aviation industry fuel readiness level tool
Bioenergy Research, 2012Co-Authors: Jeffrey J Steiner, Kristin C Lewis, Harry S Baumes, Nathan L BrownAbstract:The Feedstock Readiness Level (FSRL) tool was developed by the US Department of Agriculture, US Federal Aviation Administration, and Research and Innovative Technology Administration to describe the steps involved in bringing plant-based Feedstocks to market for aviation biofuels production. A candidate feedstock is assigned a FSRL level from 1 through 9, indicating an increasing level of maturity towards commercialization. The FSRL level also communicates the state of development of a feedstock concurrent with its readiness for use with a conversion process. There are four components to the FSRL (production, market, policy, and linkage to conversion process), each with one to four tollgate descriptions per readiness level. The FSRL tool was structured to complement the Fuel Readiness Level (FRL) tool in use by the aviation industry as an internationally recognized communication best practice. Similarly, the FSRL can be used to identify gaps in any feedstock supply chain designed for any biofuel or conversion process that provides a market for Feedstocks. This integrated feedstock and conversion technology approach can facilitate a coordinated allocation of resources to effectively plan for and develop a viable aviation biofuels industry.
Guy Marin - One of the best experts on this subject based on the ideXlab platform.
-
challenges of modeling steam cracking of heavy Feedstocks
Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles, 2008Co-Authors: K M Van Geem, Marie-françoise Reyniers, Guy MarinAbstract:Today single event microkinetic (SEMK) models for steam cracking of hydrocarbons allow simulating the conversion of heavy fractions. The key challenge to model the cracking behavior of these heavy Feedstocks is related to feedstock reconstruction. The latter depends on the required level of molecular detail of the reaction network and of the feedstock characterization/ reconstruction model. This is illustrated for gas condensate Feedstocks. Comparison of yield predictions with yields obtained in a pilot plant illustrate how uncertainties in the feedstock characterization propagate to the simulation results. The combination of a SEMK model and the feedstock reconstruction method based on maximization of the Shannon entropy allows to obtain accurate simulation results, provided that the specific density, the global PIONA weight or volume fractions, and the initial, 50% and final boiling point are known. Specifying less commercial indices results in a decrease of the agreement between simulated and experimentally obtained product yields. The developed methodology can be extended in a straight forward way to any heavy feedstock.
-
two severity indices for scale up of steam cracking coils
Industrial & Engineering Chemistry Research, 2005Co-Authors: K M Van Geem, Marie-françoise Reyniers, Guy MarinAbstract:A direct experimental scale-up method is presented for steam cracking of hydrocarbon Feedstocks. It is based on the “severity” concept but uses two severity indices instead of one to unambiguously characterize the product yields for a given feedstock. Reaction path analysis suggests that the combination of the ethylene/ethane yield ratio and the methane yield characterizes the complete product spectrum. Simulation results for n-butane cracking in a pilot plant reactor, a Lummus SRT-1 reactor, and a 4-2-1 split coil reactor confirm that the same product spectrum is obtained for identical values of both indices in the different reactor geometries although the process conditions differ strongly. The soundness of the approach is further corroborated by experimental results obtained from a pilot plant reactor and a small scale Uno-Quattro coil. This approach is only valid when similar Feedstocks are used. A rule of thumb is that the highest PIONA weight fraction for a feedstock cannot deviate by more than 5% o...
Mark R Nimlos - One of the best experts on this subject based on the ideXlab platform.
-
pilot scale gasification of corn stover switchgrass wheat straw and wood 1 parametric study and comparison with literature
Industrial & Engineering Chemistry Research, 2010Co-Authors: Daniel Carpenter, Richard L Bain, Ryan Davis, Abhijit Dutta, Calvin Feik, Katherine R Gaston, Whitney S Jablonski, Steven D Phillips, Mark R NimlosAbstract:A parametric study of the gasification of four Feedstocks (corn stover, switchgrass, wheat straw, and wood) has been performed on an experimental, pilot-scale (0.5 ton/day) gasification facility. A comparison was made of the performance of the gasifier as a function of feedstock, in terms of the syngas production and composition. In these experiments, pelletized feedstock was used, so that the shapes and sizes of the materials did not influence the results. A total of 22 statistically designed experimental conditions were examined for each feedstock, including the effects of varying the temperature of the fluidized bed, the temperature of the secondary thermal cracker, and the steam-to-biomass ratio. For each experimental condition, the permanent-gas composition was measured continuously by gas chromatography (GC). Tars were measured continuously using a molecular-beam mass spectrometer (MBMS). Sulfur analysis by GC was also conducted for three of the Feedstocks studied. The results from this study show t...
Harry S Baumes - One of the best experts on this subject based on the ideXlab platform.
-
a feedstock readiness level tool to complement the aviation industry fuel readiness level tool
Bioenergy Research, 2012Co-Authors: Jeffrey J Steiner, Kristin C Lewis, Harry S Baumes, Nathan L BrownAbstract:The Feedstock Readiness Level (FSRL) tool was developed by the US Department of Agriculture, US Federal Aviation Administration, and Research and Innovative Technology Administration to describe the steps involved in bringing plant-based Feedstocks to market for aviation biofuels production. A candidate feedstock is assigned a FSRL level from 1 through 9, indicating an increasing level of maturity towards commercialization. The FSRL level also communicates the state of development of a feedstock concurrent with its readiness for use with a conversion process. There are four components to the FSRL (production, market, policy, and linkage to conversion process), each with one to four tollgate descriptions per readiness level. The FSRL tool was structured to complement the Fuel Readiness Level (FRL) tool in use by the aviation industry as an internationally recognized communication best practice. Similarly, the FSRL can be used to identify gaps in any feedstock supply chain designed for any biofuel or conversion process that provides a market for Feedstocks. This integrated feedstock and conversion technology approach can facilitate a coordinated allocation of resources to effectively plan for and develop a viable aviation biofuels industry.
