Effective Solvent Extraction Of Coal And Subsequent Separation Processes
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Effective Solvent Extraction Of Coal And Subsequent Separation Processes
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Author : Petronella Haupt
language : en
Publisher:
Release Date : 2006
Effective Solvent Extraction Of Coal And Subsequent Separation Processes written by Petronella Haupt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Coal categories.
Coal Extract Separation Techniques And Alternative Solvent Options For Continuous Coal Extraction Pilot Plant
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Author : Alexis Rose Mundt
language : en
Publisher:
Release Date : 2021
Coal Extract Separation Techniques And Alternative Solvent Options For Continuous Coal Extraction Pilot Plant written by Alexis Rose Mundt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Biomass categories.
This research is sponsored by the Wyoming Carbon Engineering Initiative, a state fundedprogram that seeks to convert Wyoming subbituminous coal into primarily non-fuel higher valuedproducts to revitalize Wyoming’s economy. One focus of this initiative is a proposed continuouscoal extraction pilot plant that will produce cleaner, ash free coal by solvent extraction, a coal toliquids conversion process where the organic matter in coal is dissolved in an organic solvent. This study examined the feasibility of possible post-extraction separation techniques ofcoal in solvent for the proposed pilot plant. Filtration of coal extract in tetralin was analyzed torecommend the filter size for the pilot plant. Bench top toluene and cyclohexane recrystallizationexperiments were performed to examine the effects of solvent and recrystallization temperature onthe split between the soluble and insoluble fraction during extract recrystallization. Tetralin was initially identified as the solvent of choice for the pilot plant. Though it is anexcellent hydrogen donating solvent, tetralin is expensive and presents possible health hazards infinal products. Alternative extraction solvents were examined in this study. Ampoules of coal andvarious solvents were tested at 200, 250, 300, and 350°C using a Teflon lined hydrothermalautoclave and high-pressure stainless-steel tube reactors. The results suggested that phenol andethylene glycol are potential alternative solvents. It was also concluded that treating the coalsample with acid prior to extraction increased the effectiveness of solvent extraction with phenoland tetralin. A variety of analytical methods was used to characterize extracted products.
Development Of Continuous Solvent Extraction Processes For Coal Derived Carbon Products
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Author :
language : en
Publisher:
Release Date : 2006
Development Of Continuous Solvent Extraction Processes For Coal Derived Carbon Products written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
In this reporting period, tonnage quantities of coal extract were produced but solid separation was not accomplished in a timely manner. It became clear that the originally selected filtration process would not be effective enough for a serious commercial process. Accordingly, centrifugation was investigated as a superior means for removing solids from the extract. Results show acceptable performance. Petrographic analysis of filtered solids was carried out by R and D Carbon Petrography under the auspices of Koppers and consultant Ken Krupinski. The general conclusion is that the material appears to be amenable to centrifugation. Filtered solids shows a substantial pitch component as well as some mesophase, resulting in increased viscosity. This is likely a contributing reason for the difficulty in filtering the material. Cost estimates were made for the hydotreatment and digestion reactors that would be needed for a 20,000 ton per year demonstration plants, with the aid of ChemTech Inc. The estimates show that the costs of scaling up the existing tank reactors are acceptable. However, a strong recommendation was made to consider pipe reactors, which are thought to be more cost effective and potentially higher performance in large scale systems. The alternate feedstocks for coke and carbon products were used to fabricate carbon electrodes as described in the last quarterly report. Gregory Hackett successfully defended his MS Thesis on the use of these electrodes in Direct Carbon Fuel Cell (DCFC), which is excerpted in Section 2.4 of this quarterly report.
Solvent Treatment Of Coal
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Author : William Sydney Wise
language : en
Publisher:
Release Date : 1971
Solvent Treatment Of Coal written by William Sydney Wise and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Science categories.
Solvent Extraction Of Coal
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Author : Janet R. Pullen
language : en
Publisher:
Release Date : 1981
Solvent Extraction Of Coal written by Janet R. Pullen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Coal categories.
The Effect Of Solvents And Processing Conditions On The Solvent Extraction Of Coal
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Author :
language : en
Publisher:
Release Date : 2002
The Effect Of Solvents And Processing Conditions On The Solvent Extraction Of Coal written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Coal liquefaction categories.
Separation Processes In Hydrometallurgy
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Author : G. A. Davies
language : en
Publisher:
Release Date : 1987
Separation Processes In Hydrometallurgy written by G. A. Davies and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Technology & Engineering categories.
Solvent Extraction Of Coal
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Author : John Pullen
language : en
Publisher:
Release Date : 1981
Solvent Extraction Of Coal written by John Pullen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with categories.
Development Of Continuous Solvent Extraction Processes For Coal Derived Carbon Products
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Author : John W. Zondlo
language : en
Publisher:
Release Date : 2006
Development Of Continuous Solvent Extraction Processes For Coal Derived Carbon Products written by John W. Zondlo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
The purpose of this DOE-funded effort is to develop continuous processes for solvent extraction of coal for the production of carbon products. The largest applications are those which support metals smelting, such as anodes for aluminum smelting and electrodes for arc furnaces. Other carbon products include materials used in creating fuels for the Direct Carbon Fuel Cell, and porous carbon structural material referred to as ''carbon foam'' and carbon fibers. During this reporting period, hydrotreatment of solvent was completed in preparation for pitch fabrication for graphite electrodes. Coal digestion has lagged but is expected to be complete by next quarter. Studies are reported on coal dissolution, pitch production, foam synthesis using physical blowing agents, and alternate coking techniques.
Solvent Extraction Of Coal
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Author : J. F. Cudmore
language : en
Publisher:
Release Date : 1969
Solvent Extraction Of Coal written by J. F. Cudmore and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Solvent extraction categories.