Relevant bibliographies by topics / Polythionic Acid

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Polythionic Acid'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 July 2025

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Journal articles on the topic "Polythionic Acid"

1

Rawat, Jaya, P. V. C. Rao, N. D. Raut, and N. V. Choudary. "Case History: Polythionic Acid Corrosion in Refinery Hydroprocessors." Materials Performance 49, no. 4 (2010): 62–66. https://doi.org/10.5006/mp2010_49_4-62.

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Refinery hydroprocessors are subject to a variety of corrosion mechanisms and in-service metal degradation, including high-temperature sulfidation, high-temperature hydrogen attack, ammonium bisulfide (NH4HS) corrosion, sulfide stress cracking, ammonium chloride (NH4Cl) corrosion, polythionic acid (H2SxO6) (PTA) stress corrosion cracking, and embrittlement of low-alloy steels. This article describes the causes of PTA corrosion problems in hydroprocessing plants and appropriate remedial measures.
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2

Bružaitė, Ingrida, and Vitalijus Janickis. "The influence of process conditions on the formation of thallium sulfide layers on polyethylene by the use of higher polythionic acid H2S33O6." Open Chemistry 11, no. 4 (2013): 629–35. http://dx.doi.org/10.2478/s11532-012-0198-8.

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AbstractThallium sulfide layers of varying composition form on the surface of low-density polyethylene (PE) when the PE films have been sulfurized in a solution of higher polythionic acid H2S33O6, and then immersed in the alkaline solution of thallium (I) sulfate. The concentration of sulfur sorbed-diffused into PE surface increases with the increase of the sulfurization time and concentration of higher polythionic acid solution. The concentration of thallium in the Tlx Sy layers depends on the sulfur concentration sorbed-diffused into PE, the concentration, and temperature of thallium (I) sul
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Pan, Qing, Jin Zhu Tan, Qiu Yue Feng, Yun Li, and Ri Dong He. "The Study on Degradation of Stainless Steel Clad Plate Used for a Shift Reactor in Coal Chemical Plant." Applied Mechanics and Materials 853 (September 2016): 311–16. http://dx.doi.org/10.4028/www.scientific.net/amm.853.311.

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Shift reactors are widely used in the petroleum and chemical industries, and especially in the coal chemical plants. The degradation of the reactor is critical to the safe operation of coal chemical plant. In this paper, a shift reactor after 8 year service was chosen. The test block taken from the reactor cylinder with the stainless steel clad plate was used and the test samples from the test block were prepared. And then, chemical composition analysis, metallographic examination, tensile and hardness tests were performed. The scanning electron microscopy (SEM), energy dispersive spectroscopy
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4

Vakili, Mohammadtaghi, Petr Koutník, and Jan Kohout. "Corrosion by Polythionic Acid in the Oil and Gas Sector: A Brief Overview." Materials 16, no. 21 (2023): 7043. http://dx.doi.org/10.3390/ma16217043.

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Polythionic acid (PTA) corrosion is a significant challenge in the refinery industry, leading to equipment degradation, safety risks, and costly maintenance. This paper comprehensively investigates the origin, progression, mechanism, and impact of PTA corrosion on various components within refinery operations. Special attention is afforded to the susceptibility of austenitic stainless steels and nickel-based alloys to PTA corrosion and the key factors influencing its occurrence. Practical strategies and methods for mitigating and preventing PTA corrosion are also explored. This paper underscor
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Bradley, Steven A., Mark W. Mucek, Hiroyuki Anada, and Takahiro Osuki. "Alloy for resistance to polythionic acid stress corrosion cracking for hydroprocessing applications." Materials & Design 110 (November 2016): 296–303. http://dx.doi.org/10.1016/j.matdes.2016.07.067.

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Bružaitė, I., V. Janickis, I. Ancutienė, and Valentinas Snitka. "Formation of Thallium Sulphide Layers on Polyethylene (PE) Sulphurised in a Solution of Higher Polythionic Acid." Solid State Phenomena 106 (September 2005): 133–40. http://dx.doi.org/10.4028/www.scientific.net/ssp.106.133.

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Thallium sulphide layers of different composition were obtained on the surface of polyethylene when it was sulphurised in a solution of higher polythionic acid, H2S33O6, and then treated with an alkaline solution of thallium(I) sulphate. The stoichiometric composition of the thallium sulphide layers varied between Tl0.3S and Tl2.6S depending on the formation conditions of the layers of TlxSy. A phase composition of the layers obtained was confirmed by X-ray photoelectron spectroscopy. The spectra of Tl 4f7/2, O 1s and S 2p showed the bond of thallium with sulphur in TlS and Tl2S , but Tl2SO4,
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Verma, K. M., S. C. Verma, and A. K. Sinha. "Case history: Stress corrosion cracking of reactor riser by polythionic acid in a petroleum refinery." British Corrosion Journal 27, no. 4 (1992): 315–16. http://dx.doi.org/10.1179/bcj.1992.27.4.315.

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8

Ravindranath, K., and S. N. Malhotra. "Effect of some Extraneous Ions on the SCC Susceptibility of AlSi 304 SS in Polythionic Acid." Key Engineering Materials 20-28 (January 1991): 1987–2000. http://dx.doi.org/10.4028/www.scientific.net/kem.20-28.1987.

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Τawancy, Η. Μ. "Failure of hydrocracker heat exchanger tubes in an oil refinery by polythionic acid-stress corrosion cracking." Engineering Failure Analysis 16, no. 7 (2009): 2091–97. http://dx.doi.org/10.1016/j.engfailanal.2009.02.002.

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Ancutiene, Ingrida, Juan G. Navea, and Jonas Baltrusaitis. "Structural, chemical and optical properties of the polyethylene–copper sulfide composite thin films synthesized using polythionic acid as sulfur source." Applied Surface Science 347 (August 2015): 520–27. http://dx.doi.org/10.1016/j.apsusc.2015.04.114.

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Dissertations / Theses on the topic "Polythionic Acid"

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Wei, Chin-Chang, and 魏欽章. "Effect of Polythionic Acid on Electrochemical Behaviors of." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/11712469658222722351.

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碩士<br>國立成功大學<br>材料科學(工程)學系<br>85<br>Abstract In this study, the effect of polythionic acid on the electrochemical behaviors of four different stainless steels (SSs)，namely 430 SS, 444 SS, 316 SS, and 2205 duplex SS in 20wt% NaCl solution were investigated. The effects of concentration in S4O6= solution were also investigated. Potentiodynamic polarization curves measurement was used to investegated the effect of polythionic acid on electrochemical characteristics of stainless steels
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Chen, Shoou-yih. "Comparison of fatigue, corrosion And corrosion fatigue properties of 3cr12, corten and mild steel in air and polythionic acid solution." Thesis, 1991. http://hdl.handle.net/10539/22413.

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A dissertation submitted to the faculty of engineering, University of the Witwatersrand, Johannesburg in fulfillment of the requirements for the degree of master of science<br>Steel 3CR12 is a 12 chromium, titanium stabilized, corrosion resisting steel which was developed in South Africa in the recent past (Abbreviation abstract)<br>AC2017
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Books on the topic "Polythionic Acid"

1

Engineers, National Association of Corrosion. Protection od austenitic stainless steels and other austenitic alloysfrom polythionic acid stress corosion cracking during shutdown of refinery equipment. NACE, 1993.

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2

Engineers, National Association of Corrosion. Protection of austenitic stainless steels and other austenitic alloys from polythionic acid stress corrosion cracking during shutdown of refinery equipment. NACE, 1997.

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Book chapters on the topic "Polythionic Acid"

1

Bružaitė, I., V. Janickis, I. Ancutienė, and Valentinas Snitka. "Formation of Thallium Sulphide Layers on Polyethylene (PE) Sulphurised in a Solution of Higher Polythionic Acid." In Solid State Phenomena. Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/3-908451-10-8.133.

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Conference papers on the topic "Polythionic Acid"

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Baylor, V. B. "Laboratory Stress Corrosion Cracking Studies with Sulfur Acids and Chlorides in Support of Coal Liquefaction Process Development." In CORROSION 1985. NACE International, 1985. https://doi.org/10.5006/c1985-85347.

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Abstract Stress corrosion cracking caused by polythionic acid and/or chlorides has occurred in coal liquefaction pilot plants. This problem is also common in refineries and has been the subject of extensive research. This study examines () the relationship of the ASTM standard ferric sulfate—sulfuric acid test for determining sensitization to resistance to polythionic stress corrosion cracking, (2) the cracking resistance of higher-alloy Fe-Ni-Cr materials in addition to the common austenitic stainless steels, and (3) the effect of chloride concentrations up to 1% in polythionic acid solutions
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Horowitz, Hugh H. "History and Mechanism of Polythionic Acid Stress Corrosion Cracking." In CORROSION 1985. NACE International, 1985. https://doi.org/10.5006/c1985-85061.

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Abstract The problem of polythionic acid stress corrosion cracking of sensitized stainless steels has been known since the 1940's. Recent evidence indicates that the active corrodents causing this are the thiosulfate and tetrathionate anions. They function by adsorbing on the steel surface and promoting anodic dissolution of the chromium depleted steel. The adsorbate exhibits in ESCA analysis peaks corresponding to the thiosulfate itself. Cracking inhibitors function not by desorbing the thiosulfate but by promoting passivation.
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Sutton, Nathaniel, and Sean Sears. "Nitrite-Based Oxidative Chemical Treatments for Polythionic Acid SCC Mitigation." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-21145.

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Abstract Reactive metal sulfides introduce safety and reliability risks to hydroprocessing (and other) refinery units during outages. Self-heating or pyrophoric catalysts are a concern, as is stress corrosion cracking of sensitized stainless-steel equipment open to air. A nitrite-based aqueous treatment has been developed and deployed in the field, which addresses both catalyst pyrophoricity and polythionic acid (PTA) SCC of equipment. This paper will present case studies where refineries have relied solely upon the nitrite-based oxidizing solution for PTASCC mitigation. Prior published labora
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Osuki, Takahiro, Shinnosuke Kurihara, Kazuhiro Ogawa, Akira Seki, Yuhei Suzuki, and Masaki Ueyama. "Polythionic Acid Stress Corrosion Cracking on Proprietary UNS S34751 Similar Welded Joint." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16778.

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ABSTRACT It was reported in NACE(1) C2019-12783 that S34751 with extra low carbon content less than 0.015 wt% achieved superior Polythionic Acid Stress Corrosion Cracking (PTA SCC) resistance without Post Weld Heat Treatment (PWHT) in hydro-treating or hydro-cracking processes in a complex refinery. However, PTA SCC resistance of Heat Affected Zone (HAZ) and weld metal for actual welded joint of S34751 was not included in NACE C2019-12783 because of the usage of S34751 test sample with simulated HAZ heat treatment using high frequency induced heating equipment. In this research, the sensitizat
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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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Kudo, T., Y. Tarutani, M. Miura, Y. Sawaragi, H. Tsuge, and T. Moroishi. "Modified Type 347 Stainless Steel Resistant to Intergranular Stress Corrosion Cracking by Polythionic Acid." In CORROSION 1985. NACE International, 1985. https://doi.org/10.5006/c1985-85169.

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Abstract 18-8Ti and 18-8Cb stainless steels were examined with respect to the effects of carbon content, Ti/C and Cb/C ratios, solution heat treatment temperature, and stabilization heat treatment on the susceptibility to polythionic acid stress corrosion cracking. As a result, the critical Ti/C and Cb/C ratios to prevent cracking were clarified. Stabilization heat treatment was recommended to prevent the cracking on the welded joints of both commercial Types 321 and 347 stainless steels. A modified Type 347 stainless steel was developed which has high resistance to intergranular stress corros
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Rollins, B. C., K. J. Evans, J. Esteban, and N. Sutton. "Chemical Treatment to Mitigate Polythionic Acid SCC without a Soda-Ash Wash: Laboratory and Plant Experience." In CONFERENCE 2022. AMPP, 2022. https://doi.org/10.5006/c2022-17993.

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Abstract A novel oxidative chemical treatment method is already being used to neutralize pyrophoric metal sulfides present in Hydroprocessing reactor systems. It is hypothesized that this treatment will similarly neutralize the iron sulfides which contribute to the formation of polythionic acids. A simple laboratory test has been developed to test the effectiveness of the chemical treatment. Previous experimental studies into polythionic acid stress corrosion cracking (PTASCC) have typically immersed stainless steel specimens in Saman’s solution, made by bubbling gaseous SO2 and H2S through th
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Crum, J. R., M. E. Adkins, and W. G. Lipscomb. "Performance of High Nickel Alloys in Intermediate Temperature Refinery and Petrochemical Environments." In CORROSION 1986. NACE International, 1986. https://doi.org/10.5006/c1986-86208.

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Abstract In certain intermediate temperature refinery and petrochemical applications both resistance to polythionic acid and chloride stress corrosion cracking and high temperature strength and stability are required. The effect of simulated operating temperatures in the 900-1500 °F (482-816 °C) range on the corrosion and mechanical properties of several nickel alloys is examined.
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Suzuki, Yuhei, Etsuo Dan, Takahiro Osuki, Nao Otaki, Masaki Ueyama, and Hirokazu Okada. "Polythionic Acid Stress Corrosion Cracking Resistance of UNS S34752 Containing Cu for Improvement of Creep Strength." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16636.

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Abstract It has been known that application of distinctive version UNS S34751 with extra low Carbon and Higher Nb/C ratio was effective to prevent Polythionic Acid Stress Corrosion Cracking (PTA-SCC) without Post Welding Heat Treatment (PWHT) and neutralization treatment in several plants of petroleum refineries. On the other hand, due to lower creep strength, it is difficult to apply UNS S34751 to high temperature application such as Delayed Coker operated over 700 °C (1,292 °F). In order to suppress possibility of PTA-SCC occurrence, improvement of creep property for UNS S34751 is required f
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Lipscomb, W. G., J. R. Crum, and P. Ganesan. "Mechanical Properties and Corrosion Resistance of Inconel Alloy 617 for Refinery Service." In CORROSION 1989. NACE International, 1989. https://doi.org/10.5006/c1989-89259.

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Abstract Various factors affecting the performance of INCONEL* alloy 617 in refinery service are evaluated. The influence of long-term exposure at 1000-1400°F (538-760°C) on mechanical properties and high-temperature low-cycle fatigue studies are reported. In addition the effects of various heat treatments and resulting microstructure on polythionic acid stress corrosion cracking resistance and intergranular attack resistance are determined.
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