Готові списки джерел за темами / Mechanical impurities

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Добірка наукової літератури з теми "Mechanical impurities"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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Статті в журналах з теми "Mechanical impurities"

Tanzharikov, P. A., N. S. Suleymenov, and B. B. Bulegenov. "ANALYSIS BASED ON THE INFLUENCE OF MECHANICAL IMPURITIES IN THE OIL WELL ON THE SUBMERSIBLE PUMPING EQUIPMENT." ТЕХНИКА ҒЫЛЫМДАРЫ ЖӘНЕ ТЕХНОЛОГИЯ 1 (2023): 5–14. http://dx.doi.org/10.52081/tst.2023.v01.i1.001.

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The oil and gas companies are working to improve effective ways and technologies to combat the factors that complicate stable oil production. Among the main factors complicating oil well operation is the resistance of mechanical impurities in the reservoir fluid. Nowadays electrical centrifugal pumping units are widely used in the most part of oil production, and intensive ejection of mechanical impurities together with the oil during operation in the well is considered as the main problem of oil producing companies. This article considers the optimal methods and technologies of protection aga

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Yvon, P. J., and R. B. Schwarz. "Effects of iron impurities in mechanical alloying using steel media." Journal of Materials Research 8, no. 2 (1993): 239–41. http://dx.doi.org/10.1557/jmr.1993.0239.

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Mechanical alloying, a high-energy ball-milling technique, is now widely used for preparing alloy powders with metastable phases (crystalline or amorphous). The technique, however, may contaminate the powder with material eroded from the vial and milling media. We report on the analysis and effects of iron contamination on Al25Ge75 powders that we prepared by mechanically alloying mixtures of aluminum and germanium powders, using different mechanical alloying apparatuses.

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Ovchinnikov, N. P. "Assessment of mine water solid phase impact on section pumps performance in the development of kimberlite ores." Gornye nauki i tekhnologii = Mining Science and Technology (Russia) 7, no. 2 (2022): 150–60. http://dx.doi.org/10.17073/2500-0632-2022-2-150-160.

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Despite innovations in ALROSA’s (PJSC) mining and processing complexes under the updated strategy for economic development, practice shows that in recent few years the operating costs of the section pumps at the Udachny underground mine’s main drainage have increased significantly. Such an increase could be the result of a concentration of mechanical impurities in the mine water. This study is aimed at the integrated assessment of the impact of mechanical impurities concentration in mine water on the performance of the Udachny underground mine’s main drainage section pumps. It is also aimed at

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LAMSKOVA, M. I., M. I. FILIMONOV, Y. I. SUKHAREV, A. E. NOVIKOV, and S. V. BORODYCHEV. "OPTIMIZATION OF THE DESIGN-OPERATING PARAMETERS OF THE HYDROCYCLONE TAKING INTO ACCOUNT FIELD RESEARCH." Prirodoobustrojstvo, no. 4 (2020): 61–67. http://dx.doi.org/10.26897/1997-6011-2020-4-61-67.

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Cylindrical-conical pressure hydrocyclones are characterized by high productivity and efficiency indicators of water treatment from mechanical impurities at a relatively small size and cost, low resource costs for operation, which makes their use promising as a water treatment unit in the circulating water distribution systems of domestic and foreign industry. The purpose of the research is development of the construction of a filtering hydrocyclone and assessment of the impact of the fl ow characteristics and size of the sand pipe on the separative power of the apparatus in the process of wat

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Caro, A., Diana Farkas, E. M. Bringa, G. H. Gilmer, and L. A. Zepeda-Ruiz. "Effects of Microalloying on the Mobility and Mechanical Response of Interfaces in Nanocrystalline Cu." Materials Science Forum 633-634 (November 2009): 21–30. http://dx.doi.org/10.4028/www.scientific.net/msf.633-634.21.

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We utilize a novel computational approach to model the problem of impurity segregation at grain boundaries in nanophase materials. It is based on a parallel MonteCarlo algorithm that places the impurities according to the local chemical potential for the species, following the thermodynamic driving force for segregation. This technique is combined with molecular dynamics techniques to study the role played by Fe impurities in the properties of nanocrystalline Cu grain boundary properties. The impurities were found to improve microstructural stability as studied by high temperature annealing si

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Sumino, Koji, and Ichiro Yonenaga. "Interactions of Impurities with Dislocations: Mechanical Effects." Solid State Phenomena 85-86 (December 2001): 145–76. http://dx.doi.org/10.4028/www.scientific.net/ssp.85-86.145.

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Pogrebnaya, I. A., and S. V. Mikhailova. "Research analysis of mechanical impurities of wells." IOP Conference Series: Earth and Environmental Science 181 (August 16, 2018): 012026. http://dx.doi.org/10.1088/1755-1315/181/1/012026.

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Amir, Nizar, Makhfud Efendy, Wiwit Sri Werdi Pratiwi, et al. "The utilization of salt particles from seaweed processing by-products for low-sodium salt production." BIO Web of Conferences 146 (2024): 01002. http://dx.doi.org/10.1051/bioconf/202414601002.

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Utilizing mechanical rotary and sieve separators to collect salt particles from the surface of dried Eucheuma cottonii represents an innovative methodological approach. In this study, a mechanical rotary separator was employed to separate impurities like salt particles, mud, stones, and seaweed chunks from the surface of the dried Eucheuma cottonii. Following that, a multi-layer vibro sieve separator was employed to separate the salt particles from impurities. This study aimed to investigate the influence of the separation duration in both equipment for separating impurities on the surface of

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Kvach, I. "Analysis of the Causes and Modern Methods to Combat the Negative Effect of Mechanical Impurities on the Operation of Deep Pumping Equipment." Bulletin of Science and Practice, no. 6 (June 15, 2023): 122–27. http://dx.doi.org/10.33619/2414-2948/91/14.

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The article is devoted to one of the most urgent problems at present, the issues of complicated mining conditions. The paper focuses on the fact that in modern conditions of production intensification, mechanical impurities of various composition, origin and concentration are one of the most important factors negatively affecting the operation of deep-pumping equipment of the mechanized fund of oil wells. The article analyzes the main sources and causes of the appearance of impurities in borehole products and equipment, identifies external and internal causes. It is pointed out the importance

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Kukhar, V., O. Spichak, O. Balalaieva, and I. Marchenko. "Development of mathematical models of changes in emulsion concentration and the content of mechanical impurities in technological fluids using the MATLAB package for experimental data processing." Reporter of the Priazovskyi State Technical University. Section: Technical sciences 1, no. 49 (2024): 100–109. https://doi.org/10.31498/2225-6733.49.1.2024.321216.

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The article presents the results of the study of the processes of modeling changes in the concentration of emulsions and the content of mechanical impurities in technological fluids used in cold rolling conditions. The main goal of the work is to develop mathematical models to describe the relationships between the concentration of emulsions and mechanical impurities, as well as to estimate the rate of their changes over time, which will allow to increase the efficiency of technological process control and ensure stable product quality. The study is based on the analysis of experimental data o

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Більше джерел

Дисертації з теми "Mechanical impurities"

Jensen, Mallory Ann. "Detecting and gettering chromium impurities in photovoltaic crystalline silicon." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/100122.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015. Cataloged from PDF version of thesis. Includes bibliographical references (pages 61-67). Photovoltaic (PV) modules provide a source of renewable electricity by harnessing solar energy. Currently, crystalline silicon dominates the PV market with an approximate market share of 90% and record solar cell efficiencies greater than 20%. However, the PV market must decrease the cost to the consumer to maintain growth and meet global electricity demands. Increasing the solar-to-electricity convers

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Morishige, Ashley E. (Ashley Elizabeth). "Metal impurities in n-type crystalline silicon for photovoltaics : simulation, synchrotron-based characterization, and mitigation." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104131.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016. This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections. Cataloged from student-submitted PDF version of thesis. Includes bibliographical references (pages 193-211). Crystalline silicon is the dominant technology in the rapidly-growing photovoltaics (PV) industry, but significant cost reduction is still required before widespread grid parity is achieved. One-quarter of the cost of a PV module is

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Milovich, F. O., N. Y. Tabachkova, V. T. Bublik, et al. "The Influence of Stabilizing Impurities and Annealing on the Structure and Mechanical Properties of Partially Stabilized Zirconia." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35071.

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The phase composition and evolution of the twin structure of PSZ crystals, depending of the concentration stabilizing impurities have been investigated by X-ray diffraction and transmission electron microscopy. The measurements of hardness and fracture toughness by microindentation have been carried out. In work is shown that the high mechanical characteristics of PSZ crystals are related to features of their phase composition and structure, namely the degree of tetragonality the phase and the presence of domains ranging in size from tens to hundreds of nanometers. When you are citing the

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Orovets, Christine M. "Search for Resonant Impurities in Bismuth and Bismuth-Antimony Alloys: Lithium, Magnesium, and Sodium." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1337715464.

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Паккі, Г. В., та Л. М. Ульєв. "Фільтрування закручених потоків рідини від механічних домішок". Thesis, Видавництво СумДУ, 2010. http://essuir.sumdu.edu.ua/handle/123456789/13342.

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Chatelain, Marc. "Modélisation des phénomènes de transport solutal et étude d’un dispositif de brassage pour la purification du silicium photovoltaïque." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI105/document.

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Анотація:

Cette étude s’intéresse à la modélisation de la ségrégation des impuretés lors des procédés de solidification dirigée du silicium pour l’industrie photovoltaïque. Il s’agit d’un problème multi-physiques et multi-échelles qui nécessite des modèles efficaces pour pouvoir traiter des configurations industrielles en 3D. La première partie de l’étude porte sur le développement de fonctions de paroi solutales dans le but d’estimer la ségrégation sans résoudre numériquement la couche limite solutale. Un modèle analytique est alors utilisé pour estimer le paramètre convecto-diffusif à partir de la con

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Bouzidi, Nedjima. "Influence des impuretés des kaolins sur les propriétés des produits de cuisson." Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 2012. http://tel.archives-ouvertes.fr/tel-00847400.

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Ce travail concerne l'étude de l'effet des impuretés sur les phénomènes physico-chimiques apparaissant durant le frittage des kaolins entre 900 et 1600 °C et les propriétés physiques qui en découlent. Le kaolin est utilisé dans le domaine des céramiques : céramique traditionnelle, porcelaine, céramiques réfractaires (mullite, chamotte), porcelaines électrotechniques, etc... Il est d'usage de contrôler la teneur et la nature des impuretés car leur présence peut limiter leurs applications.Sept kaolins ont été choisis pour les impuretés qu'ils contiennent à savoir ;* Feldspaths, quartz et oxydes

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El, Ghani Nouhayla. "Modélisation expérimentale du transfert de masse en croissance cristalline par des méthodes électrochimiques en présence d'ultrasons." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI037.

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Le brassage acoustique présente une alternative prometteuse pour l'amélioration des procédés de purification pendant la solidification du silicium photovoltaïque. Dans cette étude, on s'intéresse à la caractérisation de l'efficacité d'un brassage par acoustic streaming pour favoriser le phénomène de ségrégation. Nous avons ainsi développé une approche expérimentale originale basée sur des démonstrateurs en eau des phénomènes présents lors de la solidification. Cette démarche s'appuie sur une analogie entre d'une part la diffusion solutale des impuretés à travers la couche limite, au niveau du

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Ferreira, Antonio Cesar. "CORRECAO DO POTENCIAL MUFFIN-TIN: ANTISITIO EM GaAs." Universidade de São Paulo, 1990. http://www.teses.usp.br/teses/disponiveis/43/43133/tde-08062015-155921/.

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Devido à inconfiabilidade do modelo EM-X?, no cálculo da energia total, consideramos uma correção na densidade de carga \"muffin-tin\". Com esta correção podemos ajustar a energia total, a partir de parâmetros definidos na teoria. O objetivo deste trabalho é o estudo da curva da energia total associada ao estado excitado do sistema GaAs: AsGa, quando o átomo substitucional de As se desloca na direção . Partindo de cálculos de primeiros princípios (LARGE UNIT CELL APPROACH), reproduzimos a curva da energia total do estado fundamental. A partir dos parâmetros encontrados na correção não \"muffin

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"ROLE OF IMPURITIES ON DEFORMATION OF HCP CRYSTAL: A MULTISCALE APPROACH." Doctoral diss., 2014. http://hdl.handle.net/2286/R.I.27423.

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abstract: Commercially pure (CP) and extra low interstitial (ELI) grade Ti-alloys present excellent corrosion resistance, lightweight, and formability making them attractive materials for expanded use in transportation and medical applications. However, the strength and toughness of CP titanium are affected by relatively small variations in their impurity/solute content (IC), e.g., O, Al, and V. This increase in strength is due to the fact that the solute either increases the critical stress required for the prismatic slip systems ({10-10}<1-210>) or activates another slip system ((0001)<11-20

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Книги з теми "Mechanical impurities"

1951-, Gupta R., Wall T. 1943-, Baxter L, and Engineering Foundation Conference on Mineral Matter in Fuels (1997 : Kailua Kona, Hawaii), eds. Impact of mineral impurities in solid fuel combustion. Kluwer Academic/Plenum, 1999.

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Jacobson, David M., and Giles Humpston. Principles of Brazing. ASM International, 2005. http://dx.doi.org/10.31399/asm.tb.pb.9781627083515.

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Principles of Brazing serves as a problem-solving guide for anyone who works with brazing processes or designs component joints. It covers key brazing parameters such as surface energy and tension, wetting and contact angle, and filler spreading characteristics; design considerations including mechanical integrity and electrical and thermal conductivity; and practical concerns such as workholding, cleaning procedures, and process control. It discusses the metallurgy of brazing alloy systems; the effect of impurities, joining atmospheres, and chemical fluxes; and the role of materials in defini

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Humpston, Giles, and David M. Jacobson. Principles of Soldering. ASM International, 2004. http://dx.doi.org/10.31399/asm.tb.ps.9781627083522.

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Principles of Soldering serves as a problem-solving guide for engineers who work with soldering processes and soldered components and assemblies. It begins with a review of key process parameters, including surface energy and tension, wetting and contact angle, fluid flow, filler spreading characteristics, dissolution of parent materials, and intermetallic growth. It then examines the factors that influence the functional integrity of soldered joints and the practicality of the process employed. It discusses the metallurgy of solder alloy systems, the effect of metallic impurities, and the use

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Gupta, R., L. Baxter, and T. Wall. Impact of Mineral Impurities in Solid Fuel Combustion. Springer, 2013.

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(Editor), R. Gupta, T. Wall (Editor), and L. Baxter (Editor), eds. The Impact of Mineral Impurities in Solid Fuel Combustion. Springer, 1999.

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Частини книг з теми "Mechanical impurities"

Hoppach, Daniel, and Urs A. Peuker. "Increasing Cleanliness of Al-melts by Additon of Ceramic Fibers." In Multifunctional Ceramic Filter Systems for Metal Melt Filtration. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-40930-1_33.

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AbstractThe application of ceramic foam filters (CFF) ensures the achievement of the required mechanical properties of cast refractory products. Thereby, the present solid non-metallic impurities precipitate on the surface of the CFF struts and junctions. The Collaborative Research Center 920 deals with the removal of these impurities to increase the metal melt cleanliness in a basic scientific research approach. The findings are of high importance for metal processing industry and an application transfer aims to contribute towards an innovative and competitive casting industry. Subsequent, on

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Castaing, J. "Effects of Impurities on the Mechanical Properties of Oxides." In The Role of Active Elements in the Oxidation Behaviour of High Temperature Metals and Alloys. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1147-5_6.

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Kutsukake, Ayaka, Shinji Ando, Masayuki Tsushida, Hiromoto Kitahara, and Hideki Tonda. "Influence of Impurities to Deformation Behavior in Magnesium Single Crystal." In The Mechanical Behavior of Materials X. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-440-5.137.

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Shahvez, Mohd, Sameer Pervez Shamsi, and Mohd Tariq. "Effect of Impurities on Charging Track in the Performance of Wireless Capacitive Charging Technique." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5463-6_51.

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Povstyanoy, Oleksandr, Oleg Zabolotnyi, Andrii Slabkyi, Andriy Dzyubinskyi, and Tamara Nykoliuk. "Development of New Filtering Materials for the Purification of Alternative Fuels from Mechanical Impurities." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-40724-7_47.

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Kumar, Pratim, Rajiv Kumar, and Puran Chandra Joshi. "Thermal Decomposition and Stabilization Studies of ADN with AN Impurities in the Presence of Catalysts." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-5849-3_1.

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Sandulyak, Alexander V., Anna A. Sandulyak, and Vera A. Ershova. "Possibility of Block Grouping of Magnetic Inspection Operations for Iron Impurities in Oils and Cutting Fluids." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16943-5_14.

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Buljan, S. T., and G. Zilberstein. "Effect of Impurities on Microstructure and Mechanical Properties of Si3N4-TiC Composites." In Tailoring Multiphase and Composite Ceramics. Springer US, 1986. http://dx.doi.org/10.1007/978-1-4613-2233-7_23.

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Dyadyura, Kostiantyn, Liudmyla Hrebenyk, Tatyana Ivakhniuk, Maria Vyshegorodtseva, and Liudmyla Primova. "Analysis of Permissible Limits for Leachable of Trace Impurities from Bone Substitutes Containing Hydroxyapatite and Beta-Tricalcium Phosphate." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-91327-4_26.

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Ayad, F., and M. Remram. "Modelling of the Gettering by Mechanical Damage of the Metallic Impurities in Silicon." In Defect and Diffusion Forum. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908451-28-0.27.

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Тези доповідей конференцій з теми "Mechanical impurities"

Zhao, Yuqing, Lijun Huang, Xun Guo, and Ke Jin. "First-principles study on the segregation behavior of C/N/O interstitial impurities in TiVTaNb." In 10th International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2024), edited by Yunhui Liu and Zili Li. SPIE, 2024. http://dx.doi.org/10.1117/12.3046916.

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Millet, Cécile, Guillaume Néel, Luciana Lima, and Diana Rodriguez Barrera. "Material Selection for Anthropogenic CO2 Injection: Mechanical and Corrosion Performances of Steels under Dense CO2 with Impurities." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-18886.

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Abstract Carbon capture and storage (CCS) is considered as a key technology to reduce CO2 emissions. After its capture and transport, the CO2 stream is injected into one of several types of stable geological formations, such as depleted oil and gas reservoirs and saline formations. Although CO2 injection of produced CO2 from sour reservoirs has been well known for enhanced oil recovery (EOR), new technical challenges arise with CO2 captured from power stations or industrial plants, as the CO2 steam contains impurities which will increase the corrosiveness of the environment, and thus compromis

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Ståhle, P., F. Nilsson, and L. G. Ljungberg. "Mechanical Conditions at a Crack Tip ANO Their Effect on Initiation ANO Growth of Environmentally Assisted Cracking." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88281.

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Abstract Elasto plastic analysis was performed to determine the conditions at the root of a notch in a CERT specimen and the conditions at a crack growing in a CERT specimen. Furthermore, analysis of growth under small scale yielding was performed in order to facilitate analysis of compact tension specimens. By experiments it was shown how the stress strain conditions affect initiation of intergranular cracking from an air generated transgranular precrack in simulated BWR environments with controlled additions of impurities. The experiments were made on annealed and sensitized Type 304 stainle

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Crum, J. R., C. S. Tassen, and T. Nagashima. "Precipitation Reactions and Corrosion Resistance of Thermally Aged and Welded Alloy 825." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97520.

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Abstract Oil refinery hydrotreating and hydrodesulfurization are high temperature processes which can cause sensitization and/or reduced ductility in some materials of construction, while the presence of sulfur and other impurities in these processes can lead to various corrosion mechanisms. Alloy 825 (UNS N08825) is often used in this demanding application. The effects of long term elevated temperature exposure and welding on the mechanical properties, microstructure and corrosion resistance of this nickel base alloy have been investigated.

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Taylor, Benjamin, Yimin Zeng, Haofei Sun, and Jing Liu. "Corrosion of 2Cr Steel in Supercritical CO2 Saturated Saline Water with Cl, S and Br Anions." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19014.

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Abstract Carbon capture, utilization, and storage (CCUS) is a set of promising technologies developed to meet global sustainable energy production and climate control goals. Among them, the application of supercritical CO2 captured from various industrial emitters for assisting enhanced oil recovery (EOR) is seen as an economic and efficient pathway. Because of their low cost and acceptable mechanical properties, low alloy steels are the primary materials of construction in s-CO2 EOR systems although they are highly susceptible to corrosion in wet s-CO2 environments, especially with the presen

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McCullough, John G., and Richard B. Nielsen. "Contamination and Purification of Alkaline Gas Treating Solutions." In CORROSION 1996. NACE International, 1996. https://doi.org/10.5006/c1996-96396.

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Abstract Alkanolamine and potassium carbonate solutions in gas treating units removing carbon dioxide, hydrogen sulfide, or both are contaminated by impurities in the feed gases and makeup water and by the products of the degradation and oxidation of amines occurring in the units themselves. Feed gas impurities include oxygen, carbonyl sulfide, carbon monoxide, hydrogen cyanide, ammonia, brine, solid particles, heavy hydrocarbons, sulfur dioxide, hydrochloric acid, organic acids, and pipeline corrosion inhibitors. Impure makeup water contains sulfate, chloride, alkali metal, and alkaline earth

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Kronenberger, Donald L., and Deborah A. Pattison. "Troubleshooting the Refinery Desalter Operation in the Era of Heavy, Sour Crude Charges." In CORROSION 1986. NACE International, 1986. https://doi.org/10.5006/c1986-86209.

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Abstract As available world crude oil supplies become progressively heavier, more sour and dirtier, and as the employment of secondary and tertiary recovery methods becomes increasingly widespread, the refineries’ desalters are being put to the test. The increasing oil weight, sulfur content and addition of impurities in production challenge the basic design of the chem-electric desalter and complicate its functioning as a pressurized-heater, gravitational settling and oil-water resolution device. The increasing oil weight leads to greater oil carry-under and the increased impurities act as em

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Tassen, C. S., and J. R. Crum. "Nickel Alloys and Welding Products for Polythionic Acid and Chloride Containing Refinery Environments." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91324.

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Abstract The selection of materials of construction is a major factor in the success of many processes in an oil refinery. Three areas which have substantial impact in selection of materials are corrosion resistance, mechanical properties and economics. Several materials are considered for reactor vessels, heaters, feed-effluent exchangers and hot transfer lines of the hydrotreating processes. Although hydrotreating and hydrodesulfurization processes vary, they all involve using hydrogen to remove sulfur and other impurities from petroleum products at elevated temperatures. There are several c

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Pint, Bruce A., Rishi Pillai, and James R. Keiser. "Summary of Structural Alloy Compatibility in Supercritical CO2 at 450°-800°C." In AM-EPRI 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.am-epri-2024p0885.

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Abstract Supercritical CO2 (sCO2) is of interest as a working fluid for several concepts including the direct- fired Allam cycle as a low-emission fossil energy power cycle. Over the past 10 years, laboratory exposures at 300 bar sCO2 have found reasonably good compatibility for Ni-based alloys at &lt;800°C, including an assessment of the sCO2 impact on room temperature mechanical properties after 750°C exposures. However, initial screening tests at 1 and 20 bar CO2 at 900°-1100°C showed poor compatibility for Ni-based alloys. In an open cycle, the introduction of 1%O2 and 0.1- 0.25%H2O im

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Diep, Daniel V. "Chemical Treatment Additives to Minimize High-Temperature Corrosion and Deposits in Liquid and Solid-Fired Boilers." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88137.

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Abstract Fuel impurities such as sulfur, alkalies (Na, K), vanadium, and chlorine can play an important role in the formation of liquid phase deposits and are considered the main sources of fireside corrosion. Liquid phase deposits not only promote the accumulation of fly ash particles on heat transfer surfaces, but also provide electrolytes for electrochemical attack of metal tubes. Many efforts have been made to minimize or control deposits and corrosion. These include boiler and burner designs, combustion control, fuel selection, mechanical cleaning using highly resistant alloys, and applyi

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Звіти організацій з теми "Mechanical impurities"

Tossey, Brett, and Ramgopal Thodla. PR-180-094506-R01 Challenges for Safe and Reliable On-Shore Pipeline Transport of Supercritical CO2. Pipeline Research Council International, Inc. (PRCI), 2010. http://dx.doi.org/10.55274/r0010712.

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There is interest within the pipeline industry in transporting supercritical CO2 in pipelines. A significant issue is the lack of an independent industry standard for supercritical CO2 pipelines. Existing industry standard for liquid and gas transmission are used for mechanical design requirements, but selected properties of supercritical CO2 make it a unique product. Impurities in the gas steam, materials selection, and leak detection in supercritical CO2 require special consideration. The objective of this project is to engage the supercritical CO2 industry in a workshop and use their knowle

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Patchett, B. M., and A. C. Bicknell. L51706 Higher-Strength SMAW Filler Metals. Pipeline Research Council International, Inc. (PRCI), 1993. http://dx.doi.org/10.55274/r0010418.

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The welding of high strength steels in general, and for pipeline fabrication in particular, has shown that cracking due to hydrogen absorption during welding is more complex in these steels than in older, lower strength steels. In older steels, primary strengthening was accomplished with carbon, which caused hydrogen cracking in the base metal HAZ under reasonably predictable conditions involving microstructure, residual stress and hydrogen level. Pipeline steels were and are in the vanguard of change in strengthening philosophy. The change involves two areas of steel making, chemical composit

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