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Title: DEVELOPMENT OF A COMPUTATIONAL MULTIPHASE FLOW MODEL FOR FISCHER TROPSCH SYNTHESIS IN A SLURRY BUBBLE COLUMN REACTOR

Abstract

The Hybrid Energy Systems Testing (HYTEST) Laboratory at the Idaho National Laboratory was established to develop and test hybrid energy systems with the principal objective of reducing dependence on imported fossil fuels. A central component of the HYTEST is the slurry bubble column reactor (SBCR) in which the gas-to-liquid reactions are performed to synthesize transportation fuels using the Fischer Tropsch (FT) process. These SBCRs operate in the churn-turbulent flow regime, which is characterized by complex hydrodynamics, coupled with reacting flow chemistry and heat transfer. Our team is developing a research tool to aid in understanding the physicochemical processes occurring in the SBCR. A robust methodology to couple reaction kinetics and mass transfer into a four-field model (consisting of the bulk liquid, small bubbles, large bubbles and solid catalyst particles) consisting of thirteen species, which are CO reactant, H2 reactant, hydrocarbon product, and H2O product in small bubbles, large bubbles, and the bulk fluid plus catalyst is outlined. Mechanistic submodels for interfacial momentum transfer in the churn-turbulent flow regime are incorporated, along with bubble breakup/coalescence and two-phase turbulence submodels. The absorption and kinetic models, specifically changes in species concentrations, have been incorporated into the mass continuity equation. The reaction rate ismore » based on the macrokinetic model for a cobalt catalyst developed by Yates and Satterfield. The model includes heat generation produced by the exothermic chemical reaction, as well as heat removal from a constant temperature heat exchanger. A property method approach is employed to incorporate vapor-liquid equilibrium (VLE) in a robust manner. Physical and thermodynamic properties as functions of changes in both pressure and temperature are obtained from VLE calculations performed external to the CMFD solver. The novelty of this approach is in its simplicity, as well as its accuracy over a specified temperature and pressure range.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Idaho National Laboratory (INL)
Sponsoring Org.:
DOE - NE
OSTI Identifier:
1031755
Report Number(s):
INL/JOU-10-20610
Journal ID: ISSN 1385-8947; TRN: US201201%%818
DOE Contract Number:  
DE-AC07-05ID14517
Resource Type:
Journal Article
Journal Name:
Chemical Engineering Journal
Additional Journal Information:
Journal Volume: 176-177; Journal ID: ISSN 1385-8947
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; BUBBLES; CATALYSTS; CHEMICAL REACTIONS; CHEMISTRY; COBALT; CONTINUITY EQUATIONS; ENERGY SYSTEMS; FISCHER-TROPSCH SYNTHESIS; FOSSIL FUELS; HEAT EXCHANGERS; HEAT TRANSFER; HYDROCARBONS; HYDRODYNAMICS; KINETICS; MASS TRANSFER; MOMENTUM TRANSFER; MULTIPHASE FLOW; PRESSURE RANGE; REACTION KINETICS; THERMODYNAMIC PROPERTIES; TURBULENCE; churn-turbulent flow; computational multiphse fluid dynamics; Fischer Tropsch; slurry bubble column reactor

Citation Formats

Guillen, Donna Post, Grimmett, Tami, Gribik, Anastasia M, and Antal, Steven P. DEVELOPMENT OF A COMPUTATIONAL MULTIPHASE FLOW MODEL FOR FISCHER TROPSCH SYNTHESIS IN A SLURRY BUBBLE COLUMN REACTOR. United States: N. p., 2011. Web. doi:10.1016/j.cej.2011.08.078.
Guillen, Donna Post, Grimmett, Tami, Gribik, Anastasia M, & Antal, Steven P. DEVELOPMENT OF A COMPUTATIONAL MULTIPHASE FLOW MODEL FOR FISCHER TROPSCH SYNTHESIS IN A SLURRY BUBBLE COLUMN REACTOR. United States. doi:10.1016/j.cej.2011.08.078.
Guillen, Donna Post, Grimmett, Tami, Gribik, Anastasia M, and Antal, Steven P. Thu . "DEVELOPMENT OF A COMPUTATIONAL MULTIPHASE FLOW MODEL FOR FISCHER TROPSCH SYNTHESIS IN A SLURRY BUBBLE COLUMN REACTOR". United States. doi:10.1016/j.cej.2011.08.078.
@article{osti_1031755,
title = {DEVELOPMENT OF A COMPUTATIONAL MULTIPHASE FLOW MODEL FOR FISCHER TROPSCH SYNTHESIS IN A SLURRY BUBBLE COLUMN REACTOR},
author = {Guillen, Donna Post and Grimmett, Tami and Gribik, Anastasia M and Antal, Steven P},
abstractNote = {The Hybrid Energy Systems Testing (HYTEST) Laboratory at the Idaho National Laboratory was established to develop and test hybrid energy systems with the principal objective of reducing dependence on imported fossil fuels. A central component of the HYTEST is the slurry bubble column reactor (SBCR) in which the gas-to-liquid reactions are performed to synthesize transportation fuels using the Fischer Tropsch (FT) process. These SBCRs operate in the churn-turbulent flow regime, which is characterized by complex hydrodynamics, coupled with reacting flow chemistry and heat transfer. Our team is developing a research tool to aid in understanding the physicochemical processes occurring in the SBCR. A robust methodology to couple reaction kinetics and mass transfer into a four-field model (consisting of the bulk liquid, small bubbles, large bubbles and solid catalyst particles) consisting of thirteen species, which are CO reactant, H2 reactant, hydrocarbon product, and H2O product in small bubbles, large bubbles, and the bulk fluid plus catalyst is outlined. Mechanistic submodels for interfacial momentum transfer in the churn-turbulent flow regime are incorporated, along with bubble breakup/coalescence and two-phase turbulence submodels. The absorption and kinetic models, specifically changes in species concentrations, have been incorporated into the mass continuity equation. The reaction rate is based on the macrokinetic model for a cobalt catalyst developed by Yates and Satterfield. The model includes heat generation produced by the exothermic chemical reaction, as well as heat removal from a constant temperature heat exchanger. A property method approach is employed to incorporate vapor-liquid equilibrium (VLE) in a robust manner. Physical and thermodynamic properties as functions of changes in both pressure and temperature are obtained from VLE calculations performed external to the CMFD solver. The novelty of this approach is in its simplicity, as well as its accuracy over a specified temperature and pressure range.},
doi = {10.1016/j.cej.2011.08.078},
journal = {Chemical Engineering Journal},
issn = {1385-8947},
number = ,
volume = 176-177,
place = {United States},
year = {2011},
month = {12}
}