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Download or read book Regenerative Desulphurization in Fluidized Bed Combustion of Coal written by and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C. M. van den Bleek
Publisher :
ISBN 13 : 9789282639818
Total Pages : 106 pages
Book Rating : 4.6/5 (398 download)
Download or read book Regenerative Desulphurization in Fluidized Bed Combustion of Coal written by C. M. van den Bleek and published by . This book was released on 1992-12-01 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ericus H. Wolff
Publisher :
ISBN 13 : 9789062756643
Total Pages : 177 pages
Book Rating : 4.7/5 (566 download)
Download or read book Regenerative Sulfur Capture in Fluidized Bed Combustion of Coal written by Ericus H. Wolff and published by . This book was released on 1991 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert Korbee
Publisher :
ISBN 13 : 9789056510176
Total Pages : 224 pages
Book Rating : 4.5/5 (11 download)
Download or read book Regenerative Desulfurization in an Interconnected Fluidized Bed System written by Robert Korbee and published by . This book was released on 1995 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. A. Hammons
Publisher :
ISBN 13 :
Total Pages : 121 pages
Book Rating : 4.:/5 (114 download)
Download or read book A Regenerative Limestone Process for Fluidized Bed Coal Combustion and Desulfurization written by G. A. Hammons and published by . This book was released on 1971 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Esso Research and Engineering Company
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (11 download)
Download or read book A Regenerative Limestone Process for Fluidized-bed Coal Combustion and Desulfurization written by Esso Research and Engineering Company and published by . This book was released on 1974 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lee Yaverbaum
Publisher : William Andrew
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 (44 download)
Download or read book Fluidized Bed Combustion of Coal and Waste Materials written by Lee Yaverbaum and published by William Andrew. This book was released on 1977 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Regenerative Process for Desulfurization of High Temperature Combustion and Fuel Gases. Progress Report No. 14, October 1-December 31, 1979 written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The characteristics of Portland Type III cement (PC III) as a potential sorbent for use in a regenerative process for desulfurization of coal in fluidized-bed combustion were examined. The sulfation rates for PC III + 5% amorphous SiO2 at temperatures between 860 and 1100°C and at 1 atm were studied thermogravimetrically, using a simulated combustion gas mixture containing 0.25% SO2. The sulfation rates were found to be independent of temperature between 950 and 1050°C. The isothermal regeneration with a mixture consisting of 5% CO, 15% CO2 and the balance N2, in this 100°C temperature interval approached an equilibrium value of over 90% within thirty minutes. Sulfation/regeneration efficiency did not decrease with cycling and was unaffected by additives introduced to increase the porosity and/or conversion of free CaO in PC III to silicates which are known to be more regenerative than CaSO4. Pressurized TGA experiments within the optimum sulfation temperature range were conducted at 5 and 10 atm to establish the viability of this sorbent for pressurized fluidized-bed combustion use. Within the experimental accuracy, no pressure dependence of sulfation rate was observed. Our experiments indicate that the attrition resistance of PC III is significantly better than natural limestones.
![Download Regenerative Process for Desulfurization of High Temperature Combustion and Fuel Gases. Quarterly Progress Report No. 4, January 1--March 31, 1977. [6 Refs]. PDF Online Free](https://books.google.com/books/content/images/frontcover/Mfa8wgEACAAJ?fife=w200-h370)
Download or read book Regenerative Process for Desulfurization of High Temperature Combustion and Fuel Gases. Quarterly Progress Report No. 4, January 1--March 31, 1977. [6 Refs]. written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Processes for regeneration of lime and lime-based sorbents to be used in fluidized-bed combustion (FBC) are being developed. Carbon, silica, and coal ash (which contains significant amounts of carbon and silica) are being investigated as the regeneration agents. Kiln-type regenerators are being considered for the apparent solid-solid reactions involved in these processes.
Download or read book Regenerative Process for Desulfurization of High Temperature Combustion and Fuel Gases. Quarterly Progress Report No. 7, October 1--December 31, 1977 written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A method of pretreating limestone used in fluidized-bed combustion has been found and is under further development. The method entails spraying the stone with an aqueous solution of Fe/sup + +//Fe/sup + + +/SO3/sup - -//SO4/sup - -/ before it is fed to the combustor. One percent of iron coated on the stone approximately doubles the rate of SO2 sorption. Fe2O3 not only catalyzes the rate, but also enhances the sorption capacity of the stone. The Brookhaven Regenerative Process, i.e., regenerating lime from sulfate with coal ash in a kiln-type reactor, is under further development. The results continue to show that a temperature of 1000°C is feasible for regeneration as compared with the temperature of 1100°C required by the fluidized-bed processes. A commercial high-temperature insulation product containing primarily CaSiO3 has been tested for SO2 sorption. The rate and capacity were both higher than those of the reagent-grade CaSiO3. Coal ash has been found as a good binder to pelletize fine-sized sorbents. The iron oxide in the ash also acts as a catalyst for SO2 sorption. The good binding property is attributed to the SiO2 in the ash. Fine CaCO3 pelletized with coal ash showed the catalytic effects. Two conceptual AFBC process flow diagrams and corresponding mass and energy balances have been prepared. One flow sheet depicts a once through sorbent system; the other, a regenerative system consisting primarily of an AFBC, a regenerator, and a sulfuric acid plant. A process comparison of the two systems and a rough analysis of sulfuric acid market potential are also presented.
Author : Aysel T. Atimtay
Publisher : Springer Science & Business Media
ISBN 13 : 3642589774
Total Pages : 409 pages
Book Rating : 4.6/5 (425 download)
Download or read book Desulfurization of Hot Coal Gas written by Aysel T. Atimtay and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: Economic and environmental requirements for advanced power generating systems demand the removal of corrosive and other sulfurous compounds from hot coal gas. After a brief account of the world energy resources and an overview of clean coal technologies, a review of regenerable metal oxide sorbents for cleaning the hot gas is provided. Zinc oxide, copper oxide, calcium oxide, manganese oxide based as well as supported and mixed metal oxide sorbents are treated. Performance analysis of these sorbents, effects of various parameters on the desulfurization efficiency, kinetics of sulfidation and regeneration reactions, sulfiding and regeneration mechanisms are discussed. Two chapters present recent results in the direct production of elemental sulfur from regeneration or SO2-rich gases.
Author :
Publisher :
ISBN 13 :
Total Pages : 356 pages
Book Rating : 4.3/5 (121 download)
Download or read book Proceedings of Second International Conference on Fluidized-bed Combustion written by and published by . This book was released on 1970 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Argonne National Laboratory. Chemical Engineering Division
Publisher :
ISBN 13 :
Total Pages : 78 pages
Book Rating : 4.:/5 (31 download)
Download or read book Reduction of Atmospheric Pollution by the Application of Fluidized-bed Combustion and Regeneration of Sulfur-containing Additives written by Argonne National Laboratory. Chemical Engineering Division and published by . This book was released on 1971 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combustion and Gasification of Coal written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. Poncelet
Publisher : Elsevier
ISBN 13 : 0080544665
Total Pages : 1205 pages
Book Rating : 4.0/5 (85 download)
Download or read book Preparation of Catalysts VI written by G. Poncelet and published by Elsevier. This book was released on 1995-03-24 with total page 1205 pages. Available in PDF, EPUB and Kindle. Book excerpt: The organizers of this Sixth Symposium maintained their initial objectives, namely to gather experts from both industries and universities to discuss the scientific problems involved in the preparation of heterogeneous catalysts, and to encourage as much as possible the presentation of research work on catalysts of real industrial significance. Another highlight of these symposia is to reserve a substantial part of the program to new developments in catalyst preparation, new preparation methods and new catalytic systems. The fact that chemical reactions which were hardly conceivable some years ago have become possible today through the development of appropriate catalytic systems proves that catalysis is in constant progress. The papers in this volume deal with preparation of new catalysts and supports, catalyst preparation via sol-gel methods, supported catalysts and synthesis of nanometer size catalysts.
Download or read book Regenerative Process for Desulfurization of High Temperature Combustion and Fuel Gases. Quarterly Progress Report No. 9, April 1--June 30, 1978 written by and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermodynamic calculations showed that all the calcium silicates are capable of sorption of SO/sub 2/ from coal combustion gases to meet the standard of 0.2 lb S/10/sup 6/ Btu at below 900/sup 0/C. Temperature limits for the di- and tricalcium silicates are higher than 900/sup 0/C. The silicates are thermodynamically more regenerative from their sulfated states than CaO. Kinetic studies were performed on sulfation and regeneration of various calcium silicate samples. Except for two samples, the silicates showed higher overall rates and, more important, higher capacities for sulfation, compared with CaO on a molar basis. The rates of regeneration of the silicates were much higher than that of CaO; more specifically, the rates of thermal decomposition of the sulfated mono- and dicalcium silicates were about 15 times higher than that of the CaSO/sub 4/, which indicated the relative bond strengths between SO/sub 3/ and the sorbents. X-ray diffraction and infrared analyses of the reaction products are discussed. Rates of sulfation and regeneration were measured for SiO/sub 2/-supported CaO. CaO was precipitated on a high surface area granular SiO/sub 2/ from aqueous solutions of calcium salts followed by a heat treatment. Compared with the Al/sub 2/O/sub 3/-supported CaO, which were actually calcium aluminates on the surface of Al/sub 2/O/sub 3/, the sulfation rates were about the same, but the regeneration rates were definitely higher for the SiO/sub 2/-supported sample. A kinetic study has been performed of the apparent solid--solid reaction between CaS and CaSO/sub 4/ with a rotary kiln reactor. The experimental conditions were within the range for regeneration of the lime-based sorbents for fluidized-bed combustion. The kinetic parameters of the chemical reaction extracted from the data compared favorably with those obtained directly and independently with a fixed-bed thermogravimetric reactor. Promising results were obtained on the utilization of coal ash as a binder for the fine-sized sorbents.
Author : Institute of Chemical Engineers (Great Britain)
Publisher : Environmental-S
ISBN 13 :
Total Pages : 316 pages
Book Rating : 4.3/5 (91 download)
Download or read book Desulphurisation in Coal Combustion Systems written by Institute of Chemical Engineers (Great Britain) and published by Environmental-S. This book was released on 1989 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: This represents a response to a growing international concern about emissions of sulphur dioxide from coal combustion. Leading researchers address the areas of coal preparation, desulphurization, industrial scale technology, materials of construction and process development.
