Author: Eric Edson Brock
Publisher:
ISBN:
Category :
Languages : en
Pages : 598
Book Description
Detailed Chemical Kinetic Modeling of the Supercritical Water Oxidation of Simple Hydrocrabons
Kinetics of Supercritical Water Oxidation
Author: Steven Rice
Publisher:
ISBN:
Category :
Languages : en
Pages : 29
Book Description
This project consists of experiments and theoretical modeling designed to improve our understanding of the detailed chemical kinetics of supercritical water oxidation (SCWO) processes. The objective of the three year project is to develop working models that accurately predict the oxidation rates and mechanisms for a variety of key organic species over the range of temperatures and pressures important for industrial applications. Our examination of reaction kinetics in supercritical water undertakes in situ measurements of reactants, intermediates, and products using optical spectroscopic techniques, primarily Raman spectroscopy. Our focus is to measure the primary oxidation steps that occur in the oxidation of methanol, higher alcohols, methylene chloride, and some simple organic compounds containing nitro groups. We are placing special emphasis on identifying reaction steps that involve hydroxyl radical, hydroperoxyl radical, and hydrogen peroxide. The measurements are conducted in two optically accessible reactors, the supercritical flow reactor (SFR) and the supercritical cell reactor (SCR), designed to operate at temperatures and pressures up to 600 deg C and 500 MPa. The combination of these two reactors permit reaction rate measurements raging from 0.1 s to many hours.
Publisher:
ISBN:
Category :
Languages : en
Pages : 29
Book Description
This project consists of experiments and theoretical modeling designed to improve our understanding of the detailed chemical kinetics of supercritical water oxidation (SCWO) processes. The objective of the three year project is to develop working models that accurately predict the oxidation rates and mechanisms for a variety of key organic species over the range of temperatures and pressures important for industrial applications. Our examination of reaction kinetics in supercritical water undertakes in situ measurements of reactants, intermediates, and products using optical spectroscopic techniques, primarily Raman spectroscopy. Our focus is to measure the primary oxidation steps that occur in the oxidation of methanol, higher alcohols, methylene chloride, and some simple organic compounds containing nitro groups. We are placing special emphasis on identifying reaction steps that involve hydroxyl radical, hydroperoxyl radical, and hydrogen peroxide. The measurements are conducted in two optically accessible reactors, the supercritical flow reactor (SFR) and the supercritical cell reactor (SCR), designed to operate at temperatures and pressures up to 600 deg C and 500 MPa. The combination of these two reactors permit reaction rate measurements raging from 0.1 s to many hours.
Destruction of Hazardous Chemicals by Oxidation in Supercritical Water: A Theoretical and Computational Treatment of Mechanisms and Elementary Reactions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description
The principal objective of this course of study was the development of detailed kinetic mechanisms which described the oxidation of simple compounds in supercritical water at the elementary reaction level. The compounds chosen were hydrogen and carbon monoxide. Kinetic mechanisms were developed from corresponding high-temperature, low-pressure combustion mechanisms available in the literature. The mechanisms were adapted to the high-pressure conditions of the SCWO environment and the resulting modified mechanisms were used to predict the temporal behavior and temperature and pressure dependence of the oxidation of each compound. The model predictions were then compared to hydrogen and carbon monoxide oxidation data obtained from experimental work carried out in parallel to the kinetic modeling effort. (jg).
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description
The principal objective of this course of study was the development of detailed kinetic mechanisms which described the oxidation of simple compounds in supercritical water at the elementary reaction level. The compounds chosen were hydrogen and carbon monoxide. Kinetic mechanisms were developed from corresponding high-temperature, low-pressure combustion mechanisms available in the literature. The mechanisms were adapted to the high-pressure conditions of the SCWO environment and the resulting modified mechanisms were used to predict the temporal behavior and temperature and pressure dependence of the oxidation of each compound. The model predictions were then compared to hydrogen and carbon monoxide oxidation data obtained from experimental work carried out in parallel to the kinetic modeling effort. (jg).
Kinetics of Supercritical Water Oxidation. SERDP Compliance Technical Thrust Area
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
This project consists of experiments and theoretical modeling designed to improve our understanding of the detailed chemical kinetics of supercritical water oxidation processes. The objective of the four-year project is to develop working models that accurately predict the oxidation rates and mechanisms for a variety of key organic species over the range of temperatures and pressures important for industrial applications. Our examination of reaction kinetics in supercritical water undertakes in situ measurements of reactants, intermediates, and products using optical spectroscopic techniques, primarily Raman spectroscopy. Our focus is to measure the primary oxidation steps that occur in the oxidation of methanol, higher alcohols, methylene chloride, aromatics, and some simple organic compounds containing nitro groups. We are placing special emphasis on identifying reaction steps that involve hydroxyl radicals, hydroperoxyl radicals, and hydrogen peroxide. The measurements are conducted in two optically accessible reactors located at Sandia's Combustion Research Facility (CRF), the supercritical flow reactor (SFR) and the supercritical constant volume reactor, designed to operate at temperatures and pressures up to 600 deg C and 500 MPa. The combination of these two reactors permits reaction rate measurements ranging from 0.15 to many hours.
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
This project consists of experiments and theoretical modeling designed to improve our understanding of the detailed chemical kinetics of supercritical water oxidation processes. The objective of the four-year project is to develop working models that accurately predict the oxidation rates and mechanisms for a variety of key organic species over the range of temperatures and pressures important for industrial applications. Our examination of reaction kinetics in supercritical water undertakes in situ measurements of reactants, intermediates, and products using optical spectroscopic techniques, primarily Raman spectroscopy. Our focus is to measure the primary oxidation steps that occur in the oxidation of methanol, higher alcohols, methylene chloride, aromatics, and some simple organic compounds containing nitro groups. We are placing special emphasis on identifying reaction steps that involve hydroxyl radicals, hydroperoxyl radicals, and hydrogen peroxide. The measurements are conducted in two optically accessible reactors located at Sandia's Combustion Research Facility (CRF), the supercritical flow reactor (SFR) and the supercritical constant volume reactor, designed to operate at temperatures and pressures up to 600 deg C and 500 MPa. The combination of these two reactors permits reaction rate measurements ranging from 0.15 to many hours.
Chemical Kinetic Modeling of Chlorinated Hydrocarbons Under Stirred-reactor Conditions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
Book Description
The combustin of chloroethane is modeled as a stirred reactor so that we can study critical emission characteristics of the reactor as a function of residence time. We examine important operating conditions such as pressure, temperature, and equivalence ratio and their influence on destructive efficiency of chloroethane and production of other chlorinated products. The model uses a detailed chemical kinetic mechanism that we have developed previously for C3 hydrocarbons. We have added to this mechanism the chemical kinetic mechanism for C2 chlorinated hydrocarbons developed by Senkan and coworkers. Some reactions have been added to Senkan's mechanism and some of the reaction-rate expressions have been updated to reflect recent developments in the literature. In the modeling calculations, sensitivity coefficients are determined to find which reaction-rate constants have the largest effect on destructive efficiency. 25 refs., 6 figs., 1 tab.
Publisher:
ISBN:
Category :
Languages : en
Pages : 23
Book Description
The combustin of chloroethane is modeled as a stirred reactor so that we can study critical emission characteristics of the reactor as a function of residence time. We examine important operating conditions such as pressure, temperature, and equivalence ratio and their influence on destructive efficiency of chloroethane and production of other chlorinated products. The model uses a detailed chemical kinetic mechanism that we have developed previously for C3 hydrocarbons. We have added to this mechanism the chemical kinetic mechanism for C2 chlorinated hydrocarbons developed by Senkan and coworkers. Some reactions have been added to Senkan's mechanism and some of the reaction-rate expressions have been updated to reflect recent developments in the literature. In the modeling calculations, sensitivity coefficients are determined to find which reaction-rate constants have the largest effect on destructive efficiency. 25 refs., 6 figs., 1 tab.
Chemical Kinetic Modeling of the Oxidation of Unburned Hydrocarbons
Author: Todd Tamura
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 7
Book Description
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 7
Book Description
Supercritical Water Processing Technologies for Environment, Energy and Nanomaterial Applications
Author: Shuzhong Wang
Publisher: Springer Nature
ISBN: 9811393265
Category : Technology & Engineering
Languages : en
Pages : 352
Book Description
This book systematically presents the technical aspects of supercritical water oxidation and supercritical water gasification for energy and environmental applications, which include reactor design, construction materials, corrosion, salt precipitation, etc. The book provides a comprehensive introduction to the properties of supercritical water, and the industrial applications, reaction mechanisms and reaction kinetics of supercritical water oxidation (SCWO) and supercritical water gasification (SCWG). The reactions occurring in supercritical water are complex, and studying their reaction mechanisms is of great importance for the development of supercritical water processing technologies. Accordingly, the book explains the oxidative mechanisms and kinetics of organic matter in supercritical water in detail. However, the harsh reaction conditions in supercritical water can easily create severe reactor corrosion and salt deposition problems. Therefore, the book also comprehensively reports on the mechanism analysis, state of research, and development trends regarding these two problems. Lastly, the book summarizes the development of supercritical water processing technologies, including studies on SCWO and SCWG, as well as near-zero-emission systems of pollutants based on SCWO technology. In short, the book provides a wealth of valuable information for all readers who are interested in using SCWO for organic waste treatment, and in using SCWG for hydrogen production with wet biomass.
Publisher: Springer Nature
ISBN: 9811393265
Category : Technology & Engineering
Languages : en
Pages : 352
Book Description
This book systematically presents the technical aspects of supercritical water oxidation and supercritical water gasification for energy and environmental applications, which include reactor design, construction materials, corrosion, salt precipitation, etc. The book provides a comprehensive introduction to the properties of supercritical water, and the industrial applications, reaction mechanisms and reaction kinetics of supercritical water oxidation (SCWO) and supercritical water gasification (SCWG). The reactions occurring in supercritical water are complex, and studying their reaction mechanisms is of great importance for the development of supercritical water processing technologies. Accordingly, the book explains the oxidative mechanisms and kinetics of organic matter in supercritical water in detail. However, the harsh reaction conditions in supercritical water can easily create severe reactor corrosion and salt deposition problems. Therefore, the book also comprehensively reports on the mechanism analysis, state of research, and development trends regarding these two problems. Lastly, the book summarizes the development of supercritical water processing technologies, including studies on SCWO and SCWG, as well as near-zero-emission systems of pollutants based on SCWO technology. In short, the book provides a wealth of valuable information for all readers who are interested in using SCWO for organic waste treatment, and in using SCWG for hydrogen production with wet biomass.
Dissertation Abstracts International
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 794
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 794
Book Description
American Doctoral Dissertations
Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 848
Book Description
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 848
Book Description
Oxidation of Benzene in Supercritical Water
Author: Joanna Lynn DiNaro Blanchard DiNaro
Publisher:
ISBN:
Category :
Languages : en
Pages : 496
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 496
Book Description