Development of Continuous Solvent Extraction Processes For Coal Derived Carbon Products

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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 ... continued below

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Kennel, Elliot B.; Dadyburjor, Dady B.; Hackett, Gregory W.; Katakdaunde, Manoj; Magean, Liviu; Stiller, Alfred H. et al. September 30, 2006.

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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.

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  • Report No.: None
  • Grant Number: FC26-03NT41873
  • DOI: 10.2172/895349 | External Link
  • Office of Scientific & Technical Information Report Number: 895349
  • Archival Resource Key: ark:/67531/metadc887563

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Office of Scientific & Technical Information Technical Reports

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  • September 30, 2006

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 23, 2016, 3:37 p.m.

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Kennel, Elliot B.; Dadyburjor, Dady B.; Hackett, Gregory W.; Katakdaunde, Manoj; Magean, Liviu; Stiller, Alfred H. et al. Development of Continuous Solvent Extraction Processes For Coal Derived Carbon Products, report, September 30, 2006; United States. (digital.library.unt.edu/ark:/67531/metadc887563/: accessed November 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.