Experimental and Ab Initio Investigations Into the Fundamentals of Corrosion, in the Context of Supercritical Water Oxidation Systems PDF Download
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Author: Jason Alexander Cline
Publisher:
ISBN:
Category :
Languages : en
Pages : 414
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Author: Jason Alexander Cline
Publisher:
ISBN:
Category :
Languages : en
Pages : 414
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Book Description
Author: Russell H. Jones
Publisher: Society for Mining Metallurgy & Exploration
ISBN:
Category : Science
Languages : en
Pages : 792
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Book Description
This collection of papers from the 2001 TMS Annual Meeting held in New Orleans includes papers from the symposium on the chemistry and electrochemistry of corrosion and stress corrosion cracking. It covers topics such as chemistry differences between crack initiation and propagation.
Author: John Clarke Orzalli
Publisher:
ISBN:
Category : Corrosive wastes
Languages : en
Pages : 316
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Book Description
An experimental test facility has been designed and constructed for investigation of the corrosion behavior of candidate materials in a supercritical water oxidation environment. The high temperatures (500 deg C) and high pressures (300 atm) required in this process, made the experimental apparatus construction and control a complex engineering problem. The facility consists of two systems. The first is an exposure autoclave internal volume 850 ml, with associated monitoring and control systems for conducting long term exposure testing of test coupons and U-bends. The second is an electrochemical cell with a potentiostat and frequency response analyzer for conducting Electronic Impedance Spectroscopy (EIS) in the supercritical water environment. Exposure testing of three candidate materials; Inconel 625, Hastelloy C-276 and 316 stainless steel was conducted at three temperature regimes corresponding to three locations in a SCWO waste treatment system. Preliminary results are presented in an environment of demineralized water as a control. Experimental results indicate evidence of a film on the materials characterized by slight weight gain. Light and confocal laser light microscopic evaluations revealed the presence of localized pitting corrosion on the Inconel 625.
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 752
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Author: Shuzhong Wang
Publisher: Springer Nature
ISBN: 9811393265
Category : Technology & Engineering
Languages : en
Pages : 352
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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.
Author: Gregory J. Rosasco
Publisher: DIANE Publishing
ISBN: 9780788100420
Category :
Languages : en
Pages : 318
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Book Description
Covers: energy recovery, space life support applications, hazardous waste, shipboard applications, conventional munitions, therodynamics and kinetics, and much more. Graphs and diagrams.
Author: R. M. Latanision
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
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Book Description
Laboratory and pilot-scale supercritical water oxidation systems are operating today and that field experience indicates that corrosion in the pre-heater, reactor and cool-down sections of SCWO systems does, as expected, occur: accelerated general corrosion, pitting and stress corrosion cracking have been identified. This provides an imperfect and incomplete if, however, important part of the data base that must, ultimately, be considered in producing large scale commercial SCWO systems. Recognizing the gaps which exist in this base of field experience, this workshop created a first cut at a corrosion research agenda that should provide guidance to designers and equipment manufacturers in screening and qualifying materials of construction for SCWO hardware and monitoring devices. The consensus of those present is that wastage (accelerated general corrosion) is less of a concern than stress corrosion cracking which may lead to premature failure of systems components. A test matrix (see Section 4(a)) was established with the view that this matrix should be pursued in a dedicated SCWO system, the goal being to develop the engineering data base necessary to complement field experience which, in turn, would be used in constructing scaled-up systems. The test matrix takes into account the recognition that stress corrosion cracking is intimately a function of the microstructure of candidate materials (which is dependent on the processing history), the chemistry of the service environment, and the state of mechanical stress of the component in question. Stress corrosion cracking will only occur if a susceptible microstructure is exposed to a hostile environment in the presence of tensile stress. If any one of these elements is absent, SCC will not occur. In essence, what is required is an understanding of the range of conditions in SCWO systems where the coincidence of solid state-chemical-mechanical factors converge leading to SCC. The proposed dedicated SCWO test system would be instrumented to monitor pH, Cl-, 02, H2 and electrode potentials as well as crack initiation / propagation rates, the latter likely achieved by the potential drop method. Additionally, given the sometimes very high rate of corrosion (wastage) that has been observed in the field, provision should be made to include test coupons to allow monitoring of both general and localized (pitting) corrosion. As is often true in the development of engineering systems, engineering is likely to outpace fundamental (mechanistic) understanding of failure phenomena. It is likely that as the data base of both field and laboratory experience expands (including required inspection and maintenance tools and approaches) improved systems will be developed. In the interim it is essential to carefully manage the technological, economic and safety-related issues that are attendant with the development of engineering systems of all kinds..
Author: Joanna Lynn DiNaro Blanchard DiNaro
Publisher:
ISBN:
Category :
Languages : en
Pages : 496
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Author:
Publisher:
ISBN:
Category : Dissertation abstracts
Languages : en
Pages : 848
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Author: Christopher Russell Sydnor
Publisher:
ISBN:
Category :
Languages : en
Pages : 176
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Book Description
