Download or read book Decomposition of Hydrogen Sulfide for Small Scale Gas Processing written by Gas Research Institute and published by . This book was released on 1994 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this contract was to evaluate thermal decomposition of H2S utilizing ceramic membrane reactors for H2S disposal in small scale gas processing.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1993 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Decomposition of Hydrogen Sulfide in an Electrical Discharge written by Larry A. Haas and published by . This book was released on 1973 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Decomposition of Hydrogen Sulphide written by Charles Francis Pickett and published by . This book was released on 1927 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen and Sulfur Production from Hydrogen Sulfide Wastes written by and published by . This book was released on 1993 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new hydrogen sulfide waste-treatment process that uses microwave plasma-chemical technology is currently under development in the Soviet Union and in the United States. Whereas the present waste treatment process only recovers sulfur at best, this novel process recovers both hydrogen and sulfur. The plasma process involves dissociating hydrogen sulfide in a ''nonequilibrium'' plasma in a microwave or radio-frequency reactor. After the dissociation process, sulfur is condensed and sold just as is currently done. The remaining gases are purified and separated into streams containing the product hydrogen, the hydrogen sulfide to be recycled to the plasma reactor, and the process purge containing carbon dioxide and water. This process has particular implications for the petroleum refining industry, in which hydrogen is a widely used reagent and must be produced from increasingly scarce hydrocarbon resources. The modular nature of the new process may also offer economic advantages over small-scale waste treatment technologies widely used in the natural-gas industry. Laboratory-scale experiments with pure hydrogen sulfide indicate that conversions exceeding 90% are possible with appropriate reactor design and that the energy required to dissociate hydrogen sulfide is low enough for the plasma process to be economically competitive. In addition, the experiments show that typical refinery acid-gas streams are compatible with the plasma process and that all by-products can be treated with existing technology.
Download or read book Hydrogen Sulfide Decomposition to Hydrogen Via a Sulfur Looping Scheme written by Kalyani Vijay Jangam and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrogen sulfide (H2S) is a hazardous pollutant, primarily formed during the processing of crude fossil fuels. Considering the detrimental effects of H2S, it is imperative to decompose it into harmless products. The state-of-the-art Claus process enables elemental sulfur recovery from H2S but converts H-content into low-value product- steam instead of valuable hydrogen (H2) due to its oxidative chemistry route. In this research work, H2S decomposition into H2 and elemental sulfur is explored using a sulfur looping scheme through two sub-steps—sulfidation and regeneration. The commercially viable H2 production from H2S demands superior H2S conversion and a sulfur carrier design exhibiting good reactivity and recyclability at minimal energy consumption. Additionally, understanding H2S decomposition reaction mechanism at the molecular scale as well as system level investigations are crucial for the material optimization and process design. The research work presented in the thesis thus focuses on the sulfur carrier design and process development which are investigated from both the fundamental and commercial aspects to meet these requirements. Chapter 2 focuses on the development of iron sulfide (FeS)-based sulfur carriers wherein the inherent low reactivity of FeS towards H2S decomposition is modified through dopant incorporation. A low concentration (2%) dopant addition is found to cause a dramatic reactivity improvement without much increase in material cost while preserving the phase integrity of FeS. The reaction pathways and electronic structures are analyzed using density functional theory to understand the role of dopants towards reactivity improvement. Additionally, a preliminary strategy is proposed for potential dopant selection through experimental and theoretical techniques. In Chapter 3, an innovative approach with nickel sulfide (Ni3S2)-based sulfur carriers utilizing CO2 for its regeneration is explored to reduce the overall energy footprint of the H2S decomposition scheme. Ni3S2 is impregnated on highly stable supports to tackle its thermal instability and enhance the active material dispersion. The synergistic effect of Ni3S2 and support towards H2S decomposition is unraveled through experiments and density functional theory calculations and general guidelines for effective support selection are established for a high-performance carrier design. Chapter 4 delves into analyzing this Ni3S2-based sulfur looping scheme from thermodynamic and reaction kinetic perspectives. The optimum reaction conditions are determined for fixed bed operation of the scheme. Moreover, system level investigations are performed to establish the advantages of the scheme over the Claus process in terms of energy and exergy efficiencies. Chapter 5 aims to enhance the reactivity of supported Ni3S2-based sulfur carrier through the carrier modification using a low concentration Titanium dopant. The reactivity and recyclability improvements are successfully substantiated using thermogravimetric experiments and solid characterization analysis. Thus, this research work provides new insights aiding the design of a robust and efficient sulfur carrier and demonstrates different innovative strategies for H2S upgradation into H2.
Download or read book Gas Abstracts written by and published by . This book was released on 1995 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical and Economic Evaluation for Small scale Hydrogen Sulfide Removal from Natural Gas written by M. P. Quinlan and published by . This book was released on 1997 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Production of Hydrogen by Superadiabatic Decomposition of Hydrogen Sulfide Final Technical Report for the Period June 1 1999 September 30 2000 written by and published by . This book was released on 2000 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this program is to develop an economical process for hydrogen production, with no additional carbon dioxide emission, through the thermal decomposition of hydrogen sulfide (H2S) in H2S-rich waste streams to high-purity hydrogen and elemental sulfur. The novel feature of the process being developed is the superadiabatic combustion (SAC) of part of the H2S in the waste stream to provide the thermal energy required for the decomposition reaction such that no additional energy is required. The program is divided into two phases. In Phase 1, detailed thermochemical and kinetic modeling of the SAC reactor with H2S-rich fuel gas and air/enriched air feeds is undertaken to evaluate the effects of operating conditions on exit gas products and conversion efficiency, and to identify key process parameters. Preliminary modeling results are used as a basis to conduct a thorough evaluation of SAC process design options, including reactor configuration, operating conditions, and productivity-product separation schemes, with respect to potential product yields, thermal efficiency, capital and operating costs, and reliability, ultimately leading to the preparation of a design package and cost estimate for a bench-scale reactor testing system to be assembled and tested in Phase 2 of the program. A detailed parametric testing plan was also developed for process design optimization and model verification in Phase 2. During Phase 2 of this program, IGT, UIC, and industry advisors UOP and BP Amoco will validate the SAC concept through construction of the bench-scale unit and parametric testing. The computer model developed in Phase 1 will be updated with the experimental data and used in future scale-up efforts. The process design will be refined and the cost estimate updated. Market survey and assessment will continue so that a commercial demonstration project can be identified.
Download or read book Coal Gasification written by United States. Office of Fossil Energy and published by . This book was released on 1975 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes glossary of terms.
Download or read book Coal Gasification written by and published by . This book was released on 1979 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes glossary of terms.
Download or read book Bibliography of Processes for Removing Hydrogen Sulfide from Industrial Gases written by Sidney Katell and published by . This book was released on 1959 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recommended Practices for Oil and Gas Producing and Gas Processing Plant Operations Involving Hydrogen Sulfide written by and published by . This book was released on 1995 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Removing Hydrogen Sulfide by Hot Potassium Carbonate Absorption written by J. H. Field and published by . This book was released on 1960 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coal Liquefaction written by and published by . This book was released on 1979 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coal Demonstration Plants written by and published by . This book was released on 1979 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coal Gasification written by United States. Division of Coal Conversion and published by . This book was released on 1980 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes glossary of terms.
