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Author : Steve Yagla
Publisher :
ISBN 13 :
Total Pages : 208 pages
Book Rating : 4.:/5 (331 download)
Download or read book Sorbent Performance Testing Experience in a Bench Scale Pressurized Fluidized Bed Reactor written by Steve Yagla and published by . This book was released on 1995 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bench-scale Testing of Fluidized-bed Sorbents -- ZT-4 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this project are to identify and demonstrate methods for enhancing long-term chemical reactivity and attrition resistance of zinc oxide-based mixed metal-oxide sorbents for desulfurization of hot coal-derived gases in a high-temperature, high-pressure (HTHP) fluidized-bed reactor. Specific objectives of this study are the following:[sm-bullet] Investigating various manufacturing methods to produce fluidizable zinc ferrite and zinc titanate sorbents in a particle size range of 50 to 400[mu]m; Characterizating and screening the formulations for chemical reactivity, attrition resistance, and structural properties; Testing selected formulations in an HTHP bench-scale fluidized-bed reactor to obtain an unbiased ranking of the promising sorbents; Investigating the effect of various process variables, such as temperature, nature of coal gas, gas velocity, and chemical composition of the sorbent, on the performance of the sorbent; Life-cycle testing of the superior zinc ferrite and zinc titanate formulations under HTHP conditions to determine their long-term chemical reactivity and mechanical strength; Addressing various reactor design issues; Generating a database on sorbent properties and performance (e.g., rates of reaction, attrition rate) to be used in the design and scaleup of future commercial hot-gas desulfurization systems; Transferring sorbent manufacturing technology to the private sector; Producing large batches (in tonnage quantities) of the sorbent to demonstrate commercial feasibility of the preparation method; and Coordinate testing of superior formulations in pilot plants with real and/or simulated coal gas.
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ISBN 13 :
Total Pages : 782 pages
Book Rating : 4.3/5 (129 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 886 pages
Book Rating : 4.:/5 (31 download)
Download or read book Fossil Energy Update written by and published by . This book was released on 1981 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (645 download)
Download or read book Newspaper Clippings Related to George Washington and His Family written by and published by . This book was released on 193? with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: A volume of newspaper clippings related to Martha Washington, Mary Ball Washington and George Washington. Clippings are undated and their sources are not identified. The collection was possibly assembled on the occasion of the 1932 commemoration of the 200th anniversary of George Washington's birth.
Download or read book Bench-scale Testing of Novel High-temperature Desulfurization Sorbents written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Extrudates of regenerable mixed-metal oxide sorbents including zinc ferrite, copper-modified zinc ferrite, zinc titanate, copper aluminate, copper-iron aluminate, and copper manganate were prepared and tested for their potential to remove hydrogen sulfide (H/sub 2/S) from coal gasifier gas in a high-temperature high-pressure (HTHP) fixed-bed reactor. The zinc containing sorbents were found to be more promising than those containing combinations of copper, aluminum, iron, and manganese. Reductions in H/sub 2/S concentration were achieved depending on sorbent, reactor temperature, and steam concentration. The copper-modified zinc ferrite sorbent reduced the H/sub 2/S concentration to less than 1 ppmv at up to 1100/degree/F with 20 volume % steam in the gas. The zinc ferrite sorbent showed no apparent loss in capacity over 15 sulfidation-regeneration cycles but underwent significant strength reduction in a coal-derived gas with 15% or less steam due to soot formation. Zinc titanate exhibited excellent strength and capacity retention at steam levels as low as 5% and temperatures as high as 1350/degree/F. 13 refs., 64 figs., 75 tabs.
Author :
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ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.:/5 (16 download)
Download or read book Enhanced Durability of Desulfurization Sorbents for Fluidized-bed Applications written by and published by . This book was released on 1992 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: To extend the operating temperature range and further improve the durability of fluidizable sorbents, zinc titanate, another leading regenerable sorbent, was selected for development in the later part of this project. A number of zinc titanate formulations were prepared in the 50 to 300?m range using granulation and spray drying methods. Important sorbent preparation variables investigated included zinc to titanium ratio, binder type, binder amount, and various chemical additives such as cobalt and molybdenum. A number of sorbents selected on the basis of screening tests were subjected to bench-scale testing for 10 cycles at high temperature, high pressure (HTHP) conditions using the reactor system designed and constructed during the base program. This reactor system is capable of operation either as a 2.0 in. or 3.0 in. I.D. bubbling bed and is rated up to 20 atm operation at 871°C. Bench-scale testing variables included sorbent type, temperature (550 to 750°C), gas type (KRW or Texaco gasifier gas), steam content of coal gas, and fluidizing gas velocity (6 to 15 cm/s). The sorbents prepared by spray drying showed poor performance in terms of attrition resistance and chemical reactivity. On the other hand, the granulation method proved to be very successful. For example, a highly attrition-resistant zinc titanate formulation, ZT-4, prepared by granulation exhibited virtually no zinc loss and demonstrated a constant high reactivity and sulfur capacity over 10 cycles, i.e., approximately a 60 percent capacity utilization, with Texaco gas at 750°C, 15 cm/s fluidizing velocity and 15 atm pressure. The commercial potential of the granulation method for zinc titanate manufacture was demonstrated by preparing two 80 lb batches of sorbent with zinc to titanium mol ratios of 0.8 and 1.5.
Download or read book Bench-Scale Development of Fluidized-Bed Spray-Dried Sorbents written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Successful development of regenerable mixed-metal oxide sorbents for removal of reduced sulfur species (such as H[sub 2]S and COS) from coal-derived fuel gas streams at high=temperature, high-pressure (HTHP) conditions is a key to commercialization of the integrated-gasification-combined-cycle (IGCC) power systems. Among the various available coal-to-electricity pathways, IGCC power plants have the most potential with high thermal efficiency, simple system configuration, low emissions of SO[sub 2], NO[sub x] and other contaminants, modular design, and low capital cost. Due to these advantages, the power plants of the 21st century are projected to utilize IGCC technology worldwide. Sorbents developed for sulfur removal are primarily zinc oxide-based inorganic materials, because of their ability to reduce fuel gas sulfur level to a few parts-per-million (ppm). This project extends the prior work on the development of fluidizable zinc titanate particles using a spray-drying technique to impart high reactivity and attrition resistance. Specific objectives are to develop highly reactive and attrition-resistant zinc titanate sorbents in 40- to 150-[mu]m particle size range for transport reactor applications using semicommercial- to full commercial-scale spray dryers, to transfer sorbent production technology to private sector, and to provide technical support for Sierra Pacific's Clean Coal Technology Demonstration plant and METC's hot-gas desulfurization process development unit (PDU), both employing a transport reactor system.
Author : Steve A. Rackley
Publisher : Elsevier
ISBN 13 : 012823167X
Total Pages : 448 pages
Book Rating : 4.1/5 (282 download)
Download or read book Negative Emissions Technologies for Climate Change Mitigation written by Steve A. Rackley and published by Elsevier. This book was released on 2023-07-14 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Negative Emissions Technologies for Climate Change Mitigation provides a comprehensive introduction to the full range of technologies that are being researched, developed and deployed in order to transition from our current energy system, dominated by fossil fuels, to a negative-carbon emissions system. After an introduction to the challenge of climate change, the technical fundamentals of natural and engineered carbon dioxide removal and storage processes and technologies are described. Each NET is then discussed in detail, including the key elements of the technology, enablers and constraints, governance issues, and global potential and cost estimates.This book offers a complete overview of the field, thus enabling the community to gain a full appreciation of NETs without the need to seek out and refer to a multitude of sources. - Covers the full spectrum of technologies to underpin the transition to a negative emissions energy system, from technical fundamentals to the current state of deployment and R&D - Critically evaluates each technology, highlighting advantages, limitations, and the potential for large scale environmental applications - Combines natural science and environmental science perspectives with the practical use of state-of-the-art technologies for sustainability
Author : World Bank
Publisher : World Bank Publications
ISBN 13 : 9780821323953
Total Pages : 1422 pages
Book Rating : 4.3/5 (239 download)
Download or read book China written by World Bank and published by World Bank Publications. This book was released on 1993 with total page 1422 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Republic of Korea's industrial policy has directed that nation's economy through nearly three decades of spectacular growth. But the authors of this paper maintain that this policy is showing signs of being outmoded. The time has come, the authors argue, for the Korean government to stop managing the economy's structural development and to redefine the responsibilities of business and government. Under this proposed compact, the allocation of resources would shift from the government to the private industrial and financial sectors. The transformation of the government bureaucracy from an ad hoc policy role to one of a transparent and predictable regulator is a key to the success of this undertaking. These new directions would present the government with enormous challenges. Greater competitive discipline and regulatory oversight would be required. While dealing with the complexities of the transition, the government would have to maintain macroeconomic stability and the momentum of savings and investment. For comparison, the study examines the industrial economies of France, Germany, Japan, and the United States, which underwent similar shifts.
Author : Babcock & Wilcox Company
Publisher : Babcock & Wilcox Company
ISBN 13 :
Total Pages : 1086 pages
Book Rating : 4.3/5 (91 download)
Download or read book Steam, Its Generation and Use written by Babcock & Wilcox Company and published by Babcock & Wilcox Company. This book was released on 1992 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt: STEAM/ITS GENERATION & USE, published by Babcock & Wilcox, is an accepted, authoritative text on steam & power generation. The new 40th edition, issued at the end of 1992, has been expanded by 60% and the material from the previous edition has been completely rewritten & reorganized to incorporate the many advances in power technology worldwide. Overall the book has increased from 36 to 57 chapters, & detailed appendices have been added. The book now totals 1064 pages with 950 illustrations. The focus of the new edition is to analyze & incorporate industry developments since the last edition, especially environmental protection, while looking well into the 21st century. STEAM provides comprehensive coverage of the steam power generation field from fundamentals, fuels, combustion & steam generation to boiler system components, energy systems, environmental control & nuclear systems. Application of systems is addressed with material covering manufacturing, construction, operation, maintenance & life extension. First issued in 1875, STEAM is the longest continuously published text in the world describing steam & power generation. To order contact: Babcock & Wilcox, Steam 40, P.O. Box 351, 20 S. Van Buren Ave., Barberton, OH 44203 or phone (216) 753-4511, FAX (216) 860-1886.
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ISBN 13 :
Total Pages : 1608 pages
Book Rating : 4.3/5 (243 download)
Download or read book Government Reports Annual Index written by and published by . This book was released on 1990 with total page 1608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 852 pages
Book Rating : 4.E/5 ( download)
Download or read book The Proceedings of the ... International Conference on Fluidized-Bed Combustion written by and published by . This book was released on 1995 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 918 pages
Book Rating : 4.3/5 (91 download)
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1988 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 988 pages
Book Rating : 4.F/5 ( download)
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 1438 pages
Book Rating : 4.E/5 ( download)
Download or read book Energy Abstracts for Policy Analysis written by and published by . This book was released on 1986 with total page 1438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 488 pages
Book Rating : 4.0/5 ( download)
Download or read book Current Awareness in Particle Technology written by and published by . This book was released on 1995 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
