Corrosion of selected alloys in sub- and supercritical water oxidation environments PDF Download
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Author: Todd Andrew Danielson
Publisher:
ISBN:
Category :
Languages : en
Pages : 148
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Book Description
Author: Todd Andrew Danielson
Publisher:
ISBN:
Category :
Languages : en
Pages : 148
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Book Description
Author: Donghai Xu
Publisher: Springer Nature
ISBN: 9811655251
Category : Science
Languages : en
Pages : 248
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Book Description
This book aims to provide comprehensive and systematic introduction and summary of corrosion characteristics, mechanisms, and control methods of candidate alloys in sub- and supercritical water environment. First of all, corrosion types of candidate alloys and the effects of major alloying elements on corrosion resistance of potential alloys in sub- and supercritical water are compared and analyzed. At the same time, research status of candidate materials, and development and application trends of several corrosion-resistant alloys are summarized. Then, corrosion characteristics of Ni-Cr, Ni-Cr-Mo, Ni-Fe-Cr and Ni-Fe-Cr-Mo-Cu corrosion-resistant alloys, FeCrAl alloy, and Zircaloy are discussed in detail, including the corrosion rate, the structure and composition of oxide film, and the effects of various surface treatment processes, etc. More specifically, it also investigates corrosion behavior of Ni-based alloy, Fe-Ni-based, and stainless steels in supercritical water. The effects of aggressive species on the corrosion behavior of Ni-base alloys are also explored in supercritical water. Readers will further discover the total corrosion processes and mechanisms of typical candidate alloys in sub- and supercritical water environment. Finally, the work explores the corrosion control methods such as ceramic coatings and passivation processes in supercritical water oxidation and in subcritical water, respectively. Future challenges and development trends of corrosion research of candidate materials in sub- and supercritical water environments are covered at the end of this book. It offers valuable reference for theoretically guiding material selection and design and operating parameter optimization of key equipment in the sub- and supercritical water technologies. The book is written for senior undergraduates, graduate students, scholars, and researchers who are interested in corrosion behavior of candidate materials of supercritical water oxidation system, supercritical water gasification system, and nuclear reactor.
Author: Christopher Frank Matthews
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 166
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Book Description
Author: Hojong Kim
Publisher:
ISBN:
Category :
Languages : en
Pages : 186
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Book Description
(Cont.) The suppression of dealloying at supercritical temperatures comes from the low proton concentration associated with the low dissociation constant of HCl and water. However, the growth rate of the dealloyed oxide layer at subcritical temperatures is very fast, which is primarily due to the dealloying and the high diffusivity of the nickel in this defective oxide layer. SCC at subcritical temperatures results from the dealloyed oxide layer formation along the grain boundary as intrusions, which act as a precursor to the crack initiation and propagation. SCC at the supercritical temperature is thought to result from the direct chemical attack of associated HC1 molecules. SCC is not observed in the neutral solution.
Author: A. Bertucco
Publisher: Elsevier
ISBN: 0080533949
Category : Science
Languages : en
Pages : 684
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Book Description
Clear evidence of increasing demands in the processing industry prompted the editors and authors to publish a new book about High Pressure Process Technology: Fundamentals and Applications.This book presents the latest knowledge regarding the high pressure processing aspects combined with that about the modeling, the design and the operation of safe and reliable high pressure plants and equipment. This treatment and selection of the subjects is stimulating and unique. Consisting of nine chapters, each subdivided into several sections, the book addresses the high pressure aspects, providing well selected correlated information connected with a comprehensive overview together with a large number of references. The main body of the first eight chapters refers to subjects like high pressure in general, the thermodynamics and kinetics of the fluids involved, the design of high pressure equipment, the modeling and design of reactors, separation and fractionation units, the safety aspects, the control and economics.In the extended last chapter, examples of promising high pressure applications are explained, such as chemical and enzymatic reactions in supercritical solvents, hydrogenation under supercritical conditions, supercritical water oxidation, polymerization with metallocene catalysts, supercritical extraction, fractionation and precipitation, supercritical pharma processing, ultra-high pressure sterilization and supercritical dry-cleaning.
Author: JohnJ. McKettaJr
Publisher: Routledge
ISBN: 1351451820
Category : Science
Languages : en
Pages : 500
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Book Description
""Waste. Nuclear Reprocessing and Treatment Technologies to Waste, Solid, Trash Facts
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: Christopher Russell Sydnor
Publisher:
ISBN:
Category :
Languages : en
Pages : 176
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Book Description
Author:
Publisher:
ISBN:
Category : Water resources development
Languages : en
Pages : 172
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
A corrosion investigation was done at MODAR, Inc., using a supercritical water oxidation (SCWO) vessel reactor. Several types of multilayered ceramic rings and experimental nickel alloy coupons were exposed to a chlorinated cutting oil TrimSol, in the SCWO process. A corrosion casing was designed and mounted in the vessel reactor with precautions to minimize chances of degrading the integrity of the pressure vessel. Fifteen of the ceramic coated rings were stacked vertically in the casing at one time for each test. There was a total of 36 rings. The rings were in groupings of three rings that formed five sections. Each section saw a different SCWO environment, ranging from 650 to 300[degrees]C. The metal coupons were mounted on horizontal threaded holders welded to a vertical rod attached to the casing cover in order to hang down the middle of the casing. The experimental nickel alloys performed better than the baseline nickel alloys. A titania multilayered ceramic system sprayed onto a titanium ring remained intact after 120-180 hours of exposure. This is the longest time any coating system has withstood such an environment without significant loss.
