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Feasibility Of Utilizing A Rotating Fluidized Bed For The Removal Of Sulfur From Hot Gases Progress Report
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Book Synopsis Feasibility of Utilizing a Rotating Fluidized Bed for the Removal of Sulfur from Hot Gases. Progress Report by :
Download or read book Feasibility of Utilizing a Rotating Fluidized Bed for the Removal of Sulfur from Hot Gases. Progress Report written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The RFB provides an option for coal combustion systems by separating the desulfurization of hot combustion product gases from the combustion process itself. Fluid-bed combustors conventionally combine the two processes and, as a result, the rapid combustion process is carried out in equipment whose design is dominated by the requirements of the slower and temperature-specific desulfurization process. Neither process can be optimized and, in fact, the specifics of the combined reaction chemistry are unclear. Separation of the processes allows consideration of alternative combustors, sorbents, and sorption devices. The RFB desulfurizer has the potential to reduce equipment sizes through improvements in reaction rates and sorbent utilization. Additionally, separation of the combustion and sorption reactions leads to a relatively clean separation of ash and spent sorbent allowing for better waste utilization or disposal. Several process advantages are associated with the use of the rotating rather than the stationary fluidized bed for sulfur removal. These stem primarily from two characteristics inherent in the multi-g system. First, smaller particles can be retained in the fluidized bed, with the following three important advantages: (a) Smaller particles will contribute to higher sulfation rates because of increased surface area; the better rates will lead to a shorter gas residence time; (b) Greater sorbent utilization will occur. Sulfation causes the buildup of a product layer on the outside of the sorbent particles, which corresponds to a higher fraction of sorbent utilization in the case of a small particle than with a larger particle; (c) The low gas velocities possible in the fluidization of small particles will permit relatively long residence times.
Book Synopsis The Feasibility of Utilizing a Rotating Fluidized Bed for the Removal of Sulphur from Hot Gases by : C. H. Waide
Download or read book The Feasibility of Utilizing a Rotating Fluidized Bed for the Removal of Sulphur from Hot Gases written by C. H. Waide and published by . This book was released on 1983 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1992-05 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1981 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes all works deriving from DOE, other related government-sponsored information and foreign nonnuclear information.
Download or read book Fossil Energy Update written by and published by . This book was released on 1978 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1985 with total page 1228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1985 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Project Independence Blueprint by : United States. Federal Energy Administration
Download or read book Project Independence Blueprint written by United States. Federal Energy Administration and published by . This book was released on 1974 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Project Independence: Denver, Colorado, Aug. 6-9, 1974 by :
Download or read book Project Independence: Denver, Colorado, Aug. 6-9, 1974 written by and published by . This book was released on 1974 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chemically Active Fluid Bed Process for Sulfur Removal During Gasification of Carbonaceous Fuels by : Z. Kowszun
Download or read book Chemically Active Fluid Bed Process for Sulfur Removal During Gasification of Carbonaceous Fuels written by Z. Kowszun and published by . This book was released on 1988 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers the work done during the final 3 years of a 9-year program to evaluate the CAFB process for gasification and desulfurization of liquid and solid fuels in a fluidized bed of hot lime. A range of alternative fuels, including three coals and a lignite, were gasified in a 3 MWt pilot scale gasifier, and small scale batch tests were conducted, all in support of the design of a demonstration plant to be retrofitted to a 20 MWe natural-gas-fired power generation plant. Direct assistance was given in the start-up and troubleshooting of the 20 MWe unit, and a design study was completed on the potential use of a pressurized CAFB process to fire a high efficiency gas turbine. The pilot plant studies demonstrated the feasibility of simultaneous gasification and desulfurization of a range of coals and a low grade lignite. Best results were obtained using a cannel coal from New Mexico. Batch and continuous gasification tests gave much useful process and equipment information for the 20 MWe design, and the pressurized CAFB studies indicated potential for commercial viability once gas turbine inlet temperatures could be raised to 1427°C.
Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Energy Research and Development Administration. Technical Information Center Publisher : ISBN 13 : Total Pages :982 pages Book Rating :4.3/5 (129 download)
Book Synopsis ERDA Energy Research Abstracts by : United States. Energy Research and Development Administration. Technical Information Center
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1977 with total page 982 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Processes for Recovering Sulfur from Secondary Source Materials by : Bertram K. Shibler
Download or read book Processes for Recovering Sulfur from Secondary Source Materials written by Bertram K. Shibler and published by . This book was released on 1962 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1975 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The removal of sulfur dioxide from a hot gas stream using water softening sludge by : Kerry Mahler Hawkins
Download or read book The removal of sulfur dioxide from a hot gas stream using water softening sludge written by Kerry Mahler Hawkins and published by . This book was released on 1969 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hot-gas Desulfurization. II. Use of Gasifier Ash in a Fluidized-bed Process. Final Report by :
Download or read book Hot-gas Desulfurization. II. Use of Gasifier Ash in a Fluidized-bed Process. Final Report written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Three gasifier coal ashes were used as reactant/sorbents in batch fluidized-beds to remove hydrogen sulfide from hot, made-up fuel gases. It is predominantly the iron oxide in the ash that reacts with and removes the hydrogen sulfide; the sulfur reappears in ferrous sulfide. Sulfided ashes were regenerated by hot, fluidizing streams of oxygen in air; the sulfur is recovered as sulfur dioxide, exclusively. Ash sorption efficiency and sulfur capacity increase and stabilize after several cycles of use. These two parameters vary directly with the iron oxide content of the ash and process temperature, but are independent of particle size in the range 0.01 - 0.02 cm. A western Kentucky No. 9 ash containing 22 weight percent iron as iron oxide sorbed 4.3 weight percent sulfur at 1200°F with an ash sorption efficiency of 0.83 at ten percent breakthrough. A global, fluidized-bed, reaction rate model was fitted to the data and it was concluded that chemical kinetics is the controlling mechanism with a predicted activation energy of 19,600 Btu/lb mol. Iron oxide reduction and the water-gas-shift reaction were two side reactions that occurred during desulfurization. The regeneration reaction occurred very rapidly in the fluid-bed regime, and it is suspected that mass transfer is the controlling phenomenon.
Book Synopsis Government Reports Annual Index: Keyword A-L by :
Download or read book Government Reports Annual Index: Keyword A-L written by and published by . This book was released on 1987 with total page 1260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
