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Control Of Trace Metal Emissions During Coal Combustion Technical Progress Report April 1 1996 June 30 1996
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Book Synopsis Control of Trace Metal Emissions During Coal Combustion. Technical Progress Report, April 1, 1996--June 30, 1996 by :
Download or read book Control of Trace Metal Emissions During Coal Combustion. Technical Progress Report, April 1, 1996--June 30, 1996 written by and published by . This book was released on 1996 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emissions of toxic trace metals in the form of metal fumes or submicron particulates from a coal-fired combustion source have received greater environmental and regulatory concern over the past years. Current practice of controlling these emissions is to collect them at the cold-end of the process by air-pollution control devices (APCDs) such as electrostatic precipitators and baghouses. However, trace metal fumes may not always be effectively collected by these devices because the formed fumes are extremely small. The proposed research is to explore the opportunities for improved control of toxic trace metal emissions, alternatively, at the hot-end of the coal combustion process, i.e., in the combustion chamber. The technology proposed is to prevent the metal fumes from forming during the process, which would effectively eliminate the metal emission problems. Specifically, the technology is to employ suitable sorbents to (1) reduce the amount of metal volatilization during combustion and (2) capture volatilized metal vapors. The objectives of the project are to demonstrate the technology and to characterize the metal capture process during coal combustion in a fluidized bed combustor. The observed experimental results indicated that metal capture by sorbents can be as high as 91% depending on the metal species and sorbent involved. All three sorbents tested, i.e., bauxite, zeolite and lime, were observed to be capable of capturing lead and cadmium in a various degree. Zeolite and lime were able to capture chromium. Results from thermodynamic equilibrium simulations suggested the formation of metal-sorbent compounds such as Pb2SiO4(s), CdAl2O4(s) and CdSiO3(s) under the combustion conditions. Additional experiments are being carried out to provide more statistically representative results for better understanding the metal capture process.
Book Synopsis Control of Trace Metal Emissions During Coal Combustion. Technical Progress Report, April 1, 1995--June 30, 1995 by :
Download or read book Control of Trace Metal Emissions During Coal Combustion. Technical Progress Report, April 1, 1995--June 30, 1995 written by and published by . This book was released on 1995 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emissions of toxic trace metals in the form of metal fumes or submicron particulates from a coal-fired combustion source have received greater environmental and regulatory concern over the past years. Current practice of controlling these emissions is to collect them at the cold-end of the process by air-pollution control devices (APCDs) such as electrostatic precipitators and baghouses. However, trace metal fumes may not always be effectively collected by these devices because the formed fumes are extremely small. The proposed research is to explore the opportunities for improved control of toxic trace metal emissions, alternatively, at the hot-end of the coal combustion process, i.e., in the combustion chamber. The technology proposed is to prevent the metal fumes from forming during the process, which would effectively eliminate the metal emission problems. Specifically, the technology is to employ suitable sorbents to (1) reduce the amount of metal volatilization during combustion and (2) capture volatilized metal vapors. The objectives of the project are to demonstrate the technology and to characterize the metal capture process during coal combustion in a fluidized bed combustor.
Book Synopsis Control of Trace Metal Emissions During Coal Combustion. Technical Progress Report, July 1, 1995--September 30, 1995 by :
Download or read book Control of Trace Metal Emissions During Coal Combustion. Technical Progress Report, July 1, 1995--September 30, 1995 written by and published by . This book was released on 1995 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emissions of toxic trace metals in the form of metal fumes or submicron particulates from a coal-fired combustion source have received greater environmental and regulatory concern over the past years. Current practice of controlling these emissions is to collect them at the cold-end of the process by air-pollution control devices (APCDs) such as electrostatic precipitators and baghouses. However, trace metal fumes may not always be effectively collected by these devices because the fumes are extremely small. The proposed research is to explore the opportunities for improved control of toxic trace metal emissions, alternatively, at the hot-end of the coal combustion process, i.e., in the combustion chamber. The technology proposed is to prevent the metal fumes from forming during the process, which would effectively eliminate the metal emission problems. Specifically, the technology is to employ suitable sorbents to reduce the amount of metal volatilization during combustion and capture volatilized metal vapors. The objectives of the project are to demonstrate the technology and to characterize the metal capture process during coal combustion in a fluidized bed combustor.
Book Synopsis Alle skal kende alle tavler & tegn by :
Download or read book Alle skal kende alle tavler & tegn written by and published by . This book was released on 1959 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Control of Trace Metal Emissions During Coal Combustion. Technical Progress Report, October 1, 1995 - December 31, 1995 by :
Download or read book Control of Trace Metal Emissions During Coal Combustion. Technical Progress Report, October 1, 1995 - December 31, 1995 written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Emissions Control Development Program. Quarterly Technical Progress Report {number_sign}7 for the Period by :
Download or read book Advanced Emissions Control Development Program. Quarterly Technical Progress Report {number_sign}7 for the Period written by and published by . This book was released on 1996 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Babcock & Wilcox (B & W) is conducting a five-year project aimed at the development of practical, cost- effective strategies for reducing the emissions of hazardous air pollutants (commonly called air toxics) from coal-fired electric utility plants. The need for air toxic emissions controls may arise as the U.S. Environmental Protection Agency proceeds with implementation of Title III of the Clean Air Act Amendment (CAAA) of 1990. Data generated during the program will provide utilities with the technical and economic information necessary to reliably evaluate various air toxics emissions compliance options such as fuel switching, coal cleaning, and flue gas treatment. The development work is being carried out using B & W's new Clean Environment Development Facility (CEDF) wherein air toxics emissions control strategies can be developed under controlled conditions, and with proven predictability to commercial systems. Tests conducted in the CEDF provide high quality, repeatable, comparable data over a wide range of coal properties, operating conditions, and emissions control systems. Development work to date has concentrated on the capture of mercury, other trace metals, fine particulate, and the inorganic species hydrogen chloride and hydrogen fluoride.
Book Synopsis Ex actis synodicis et aliis ... expositio eorum, quae theologi academiae VVitebergensis monuerint ... by :
Download or read book Ex actis synodicis et aliis ... expositio eorum, quae theologi academiae VVitebergensis monuerint ... written by and published by . This book was released on 1559 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Control of Toxic Metallic Emissions Formed During the Combustion of Ohio Coals. Final Report, September 1994--March 1996 by :
Download or read book Control of Toxic Metallic Emissions Formed During the Combustion of Ohio Coals. Final Report, September 1994--March 1996 written by and published by . This book was released on 1996 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this project was to characterize metallic emissions from representative coals and develop strategies for their control. A technique for flue gas desulfurization is the use of calcium based sorbents, and the degree of metals capture of these sorbents under different conditions will be researched. The objective of the first year of the study was to understand the evolution of metallic aerosol size distributions and the capture characteristics of various sorbents. Also, the metallic emissions resulting from the combustion of two seams of Ohio coals were to be characterized. Studies on the evolution of the metallic aerosol size distributions have been completed and the use of silicon and calcium based sorbents for capture of lead species has been examined. Co-injection of metallic compounds along with organometallic silicon indicated a high degree of capture of lead in a certain temperature region. Preliminary results with calcium based sorbents also indicate capture of metallic species. In the second year, the work was extended to examine three different aspects: (1) understanding the mechanisms of capture of metals by vapor phase sorbents; (2) role of chlorine in speciation of metals and its importance in metals capture; and (3) capture of mercury by aerosol transformation. It was established that aerosol formation rates for Hg species is rather slow under typical combustion conditions, and hence would not be an effective way of capture of mercury. However, the use of titania based sorbents have provided exciting results. This is being developed further for effective capture of Hg species in combustion environments. Several theoretical investigations were also carried out to better understand and predict trace metal behavior in combustion environments. Publications and conference presentations resulting from work this year is listed.
Book Synopsis Trace Elements from Coal Combustion by : M. Y. Lim
Download or read book Trace Elements from Coal Combustion written by M. Y. Lim and published by . This book was released on 1979 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 1996 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trace Elements in Coal written by and published by . This book was released on 1996 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: CQ, Inc. proposed to quantify the relationship between the modes of occurrence of twelve trace hazardous air pollutants (HAP's) elements in coal and the degree that each element can be removed by existing and advanced physical and chemical coal cleaning processes. They also proposed to investigate new chemical and biological trace element removal processes, and estimate the concentration and stability of trace elements in coal preparation plant tailings. The ultimate goal of this effort is to produce a software tool that will predict the most amenable integration of processes for select trace element emissions control. In support of this effort, the USGS is performing trace element modes of occurrence analyses on coal samples provided by CQ, Inc. The objective of this work to determine the modes of occurrence of as many as twelve trace HAP's elements in coal. The HAP's elements can occur in coal in numerous forms. For example, antimony is generally thought to be present in pyrite, accessory sulfides such as stibnite, and possible organically bound; arsenic is primarily associated with late-stage (epigenetic) pyrite; cadmium with sphalerite; chromium may be organically bound, associated with clays, or contained in chromium-bearing mineral; mercury is thought to occur predominately in epigenetic pyrite; and selenium may be organically bound or associated with pyrite or accessory minerals such as clausthalite and galena. Phase I Characterization of four coals is progressing satisfactorily. One round of selective leaching has been completed, the second is underway. Four samples have been submitted for bulk chemical analysis. SEM and microprobe analysis have been started. Preliminary data are presented in this report.
Download or read book Matthews, Janet written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Performance Materials in Coal Conversion Utilization. Technical Progress Report, April 1, 1996--June 30, 1996 by :
Download or read book High Performance Materials in Coal Conversion Utilization. Technical Progress Report, April 1, 1996--June 30, 1996 written by and published by . This book was released on 1996 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Object is to test, analyze, and improve the heat and coal-slag corrosion resistance of a SiC(p)/Al2O3 ceramic composite tubular material. The material will be evaluated for resistance to pressures, temperatures, and corrosion within a coal-fired high- temperature, high-pressure air heater. Microstructures and some mechanical properties of composite tubes were studied. Other studies include corrosion thermodynamic analysis of Al oxide coated composite.
Author :Irene M. Smith Publisher :[Ottawa ] : Canada Centre for Mineral and Energy Technology ISBN 13 :9789290291480 Total Pages :87 pages Book Rating :4.2/5 (914 download)
Book Synopsis Trace Elements from Coal Combustion by : Irene M. Smith
Download or read book Trace Elements from Coal Combustion written by Irene M. Smith and published by [Ottawa ] : Canada Centre for Mineral and Energy Technology. This book was released on 1987 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Treatment of Metal-laden Hazardous Wastes with Advanced Clean Coal Technology By-products. Quarterly Report, March 30, 1996--June 30, 1996 by :
Download or read book Treatment of Metal-laden Hazardous Wastes with Advanced Clean Coal Technology By-products. Quarterly Report, March 30, 1996--June 30, 1996 written by and published by . This book was released on 1998 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress is described on the use of by-products form clean coal technologies for the treatment of hazardous wastes. During the third quarter of Phase 2, work continued on evaluating Phase 1 samples (including evaluation of a seventh waste), conducting scholarly work, preparing for field work, preparing and delivering presentations, and making additional outside contacts.
Book Synopsis Effects of Trace Contaminants from Coal Combustion by :
Download or read book Effects of Trace Contaminants from Coal Combustion written by and published by . This book was released on 1977 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Review of Current Information on Some Ecological and Health Related Aspects of the Release of Trace Metals Into the Environment Associated with the Combustion of Coal by : Merrill Heit
Download or read book A Review of Current Information on Some Ecological and Health Related Aspects of the Release of Trace Metals Into the Environment Associated with the Combustion of Coal written by Merrill Heit and published by . This book was released on 1977 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
