Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Solvent Refined Coal Src Process Trace Elements Vol3 Pilot Plant Development Work Part 6 The Fate Of Trace Elements In The Src Process
Download Solvent Refined Coal Src Process Trace Elements Vol3 Pilot Plant Development Work Part 6 The Fate Of Trace Elements In The Src Process full books in PDF, epub, and Kindle. Read online Solvent Refined Coal Src Process Trace Elements Vol3 Pilot Plant Development Work Part 6 The Fate Of Trace Elements In The Src Process ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Solvent Refined Coal (SRC) Process : Trace Elements. Vol.3 : Pilot Plant Development Work. Part 6 : the Fate of Trace Elements in the SRC Process by :
Download or read book Solvent Refined Coal (SRC) Process : Trace Elements. Vol.3 : Pilot Plant Development Work. Part 6 : the Fate of Trace Elements in the SRC Process written by and published by . This book was released on 1980 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Solvent Refined Coal (SRC) Process: Trace Elements by : R. H. Filby
Download or read book Solvent Refined Coal (SRC) Process: Trace Elements written by R. H. Filby and published by . This book was released on 1982 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Solvent Refined Coal (SRC) Process by :
Download or read book Solvent Refined Coal (SRC) Process written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Instrumental neutron activation analysis was used to study the distribution and fate of up to 36 elements in the Solvent Refined Coal Process Pilot Plant located at Fort Lewis, Washington. The elements Ti, V, Mg, Ca, Al, Cl, Mn, As, Br, Na, K, Sm, La, Ga, Cu, Sb, Se, Hg, Ni, Co, Cr, Fe, Rb, Cs, Sc, Tb, Eu, Ce, Sr, Ba, Th, U, Hf, Ta, Zr and Zn were measured in feed coal, insoluble residues, process solvent, process and effluent waters, by-product sulfur, SRC-I solid product, liquid-liquid separator oils and SRC-II liquid products. The material balance was calculated for each element from the concentration data and yields of each process fraction for both the SRC-I and SRC-II processes. Except for Ti, Cl and Br in the SRC-I mode and Hg in the SRC-II mode, each element was substantially lower in the SRC products than in the original feed coal. Residues from the process contained more than 80% of the trace element content found in the coal, except for Hg. More than 98.5% of the total contents of K and Fe in coal were retained in the insoluble residues. Elements such as Hg, Se, As and Sb can form volatile compounds (such as Hg/sup 0/, H/sub 2/Se, AsH/sub 3/ and SbH/sub 3/) stable under the process conditions. The high enhancement factors of Se (957), As (202) and Sb (27.4) in the aqueous phase of the separator water compared to that of the oil are evidence for the formation of volatile species which are more soluble in water than in the oil phase.
Book Synopsis Solvent Refined Coal (SRC) Process by :
Download or read book Solvent Refined Coal (SRC) Process written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the forms of trace elements occurring in Solvent Refined Coal has been performed by chemical separation of the Solvent Refined Coal based on differences in the functionality and molecular weight of the organic matrix. Analysis of the fractions separated for various trace elements has revealed associations of certain elements with other elements as well as with certain fractions. The analysis of Solvent Refined Coal I by these methods provided data on the distribution of Ti, V, Ca, S, Al, Mn, As, Se, Cr, Fe, Ni, Zn, Sc, and Ga in the fractions generated. Because of the low trace element content of Solvent Refined Coal II only As, Se, and Cr could be detected in the silica fractions. Based on the distributions three different groups of elements have been based on the association of elements with each other and with certain fractions. The first group is composed of As, Se, and Cr associated with silica fractions of relatively low functionality; these elements have a high percent solubility in the starting Solvent Refined Coal II oil. The second group composed of Ti, V, and to a lesser extent a second form of Cr, is associated with fractions that have a high concentration of phenolic material and is probably present as phenoxide complexes. The third group composed of Fe, Ca, K, Al, and Mg is associated with the most functional fractions and is possibly present as humic acid type complexes or as submicron size particulates. The integration of chromatographic methods with trace element analysis of the fractions generated is capable of discerning the presence of different forms of the elements. The methods used are applicable to other important geologically occurring organic matter.
Book Synopsis Solvent Refined Coal (SRC) Process by :
Download or read book Solvent Refined Coal (SRC) Process written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This work reports the results of neutron activation analysis determination of the fate of trace elements in the SRC II process. Six coals were studied for their behavior in material balance runs carried out at the Fort Lewis Pilot Plant. The distribution of trace elements among products and input streams was determined by thermal neutron activation analysis using thermal neutron flux of 8 x 10/sup 12/ neutrons cm/sup -2/ sec/sup -1/ followed by Ge(Li) gamma ray spectroscopy. National Bureau of Standards Standard Reference Materials (SRM) were used to evaluate the analytical precision and accuracy of the methods used. For each material balance study the trace element input stream was taken as ground coal and the output streams were vacuum bottoms, SRC II product oil, and process water. In addition to these major components, oils, sludges and waters from liquid-liquid separators, effluent waters, biosludges, and by-product sulfur were also analyzed. Concerning the distribution of trace elements in the SRC II process, it was found that the vacuum bottoms was the major sink for all trace element studied, with the exception of Hg. Much lower trace element concentrations (except for Hg) were found in the SRC II product oil relative to the vacuum bottoms or the feed coal, irrespective of coal type. The results indicate excellent balances for the elements studied, except for Hg. Except for Hg, Se, and C1, the SRC II product and process waters contributed less than 1% of the elemental balances for light oil fractions and process waters indicates that Hg, and to a lesser degree As, Se, and Sb, exhibited volatile behavior in the SRC II process but that the degree of volatility is strongly dependent on conditions or coal type.
Book Synopsis Solvent Refined Coal (SRC) Process by : Royston H. Filby
Download or read book Solvent Refined Coal (SRC) Process written by Royston H. Filby and published by . This book was released on 1982 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: The initial efforts concentrated on the development of appropriate analytical procedures for thirty-nine elements. Sensitive neutron activation procedures were developed for Ti, V, Ca, Mg, Al, Cl, Mn, As, Sb, Se, Hg, Br, Co, Ni, Cr, Fe, Na, Rb, Cs, K, Sc, Tb, Eu, Sm, Ce, La, Sr, Ba, Th, Hf, Ta, Ga, Zr, and Cu in feed coals, process solvent, SRC solid and liquid products, mineral residues, filter cake, by-product solvents, process and effluent waters, and by-product sulfur. Atomic absorption spectrophotometric procedures were developed for Pb, Cd and Be in various plant-derived streams and materials including process and effluent waters. This study of the SRC-I process concluded that the bulk of the trace elements in the coal feed appear to concentrate in the mineral residue with two exceptions; bromine and titanium appear to concentrate in the SRC-I solid product. High mercury, selenium and arsenic levels in the process water were effectively reduced by the treatment process to essentially natural levels. The treatment and dilution process was effective for the removal of other trace elements from the process water. Study of the SRC-II process found that the vacuum bottoms was the major sink for all trace elements studied with the exception of mercury. Much lower trace element concentrations were found in the SRC-II liquid product relative to the vacuum bottoms or the feed coal, irrespective of coal type. Mercury, and to a lesser degree arsenic, selenium and antimony, exhibited volatile behavior in the SRC-II process but the degree of volatility was strongly dependent on conditions or coal type. Process waters contained higher concentrations of mercury, selenium, arsenic and antimony; however, the treated SRC-II effluent waters met all appropriate standards including drinking water criteria.
Book Synopsis Solvent Refined Coal (SRC) Process by :
Download or read book Solvent Refined Coal (SRC) Process written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented on a study of the distribution and fate of 34 trace elements in the Solvent Refined Coal Process at the pilot plant located at Fort Lewis, Washington, and operated by The Pittsburg and Midway Coal Mining Co. under contract with the US Department of Energy. Neutron activation analysis was used to determine Ti, V, Ca, Mg, Al, Cl, Mn, As, Sb, Se, Hg, Br, Co, Ni, Cr, Fe, Na, Rb, Cs, K, Sc, Tb, Eu, Sm, Ce, La, Sr, Ba, Th, Hf, Ta, Ga, Zr, and Cu in feed coals, process solvent, Solvent Refined Coal (SRC), mineral residues, wet filter cake, by-product solvents, process and effluent waters and by-product sulfur. The sample points were chosen such that the major process streams were adequately described and that the major input and output materials were included. Atomic absorption spectrophotometry was used to measure the toxic elements Pb, Cd, Be in plant-derived solvents, effluent water and Hamer Marsh water. Specific methods were developed for analysis of a wide range of material compositions. The neutron activation analysis procedures were divided into short and long irradiation procedures for elements with short half lives (less than 3 hours) and intermediate to long half lives (8 hours to 5.2 years). Data are presented for a third equilibrium set of samples from the SRC-I process and compared to two similar sets analyzed previously. A material balance (or budget) was calculated for each element from the concentration data and the yields of each process fraction. Data are also presented on a study of carbon monoxide addition to the hydrogen stream and its effect on trace elements, and trace element data on a study of thirty-six plant effluent water samples taken during an SRC-I production run.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1983 with total page 1252 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 1982 with total page 1744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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:
Download or read book Energy written by and published by . This book was released on 1981 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Energy: a Continuing Bibliography with Indexes by :
Download or read book Energy: a Continuing Bibliography with Indexes written by and published by . This book was released on 1980 with total page 1100 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 1983 with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Fate of Trace Elements in the Solvent Refined Coal (SRC-I and SRC-II) Processes by : Samir Ramzy Khalil
Download or read book The Fate of Trace Elements in the Solvent Refined Coal (SRC-I and SRC-II) Processes written by Samir Ramzy Khalil and published by . This book was released on 1979 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interference Problems on Wing-fuselage Combinations in Inviscid, Incompressible Flow by : Aeronautical Research Council (Great Britain)
Download or read book Interference Problems on Wing-fuselage Combinations in Inviscid, Incompressible Flow written by Aeronautical Research Council (Great Britain) and published by . This book was released on 1974 with total page 1212 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 1983 with total page 1212 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 Solvent Refined Coal (SRC) Process : Trace Elements : Research & Development Report No.53, Interim Report No.31, August 1 1976-July 31 1977 by : R.H. Filby
Download or read book Solvent Refined Coal (SRC) Process : Trace Elements : Research & Development Report No.53, Interim Report No.31, August 1 1976-July 31 1977 written by R.H. Filby and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
