Advanced sulfur control concepts in hot-gas desulfurization technology. Quarterly report, January 1, 1996--March 31, 1996

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The last experimental tests involving FeS regeneration in both the atmospheric pressure and high pressure electrobalance reactors were completed during the quarter. The effects of temperature, reactant composition, and flow rate were studied in the atmospheric pressure electrobalance in atmospheres of O{sub 2}/N{sub 2}, H{sub 2}O/N{sub 2}, and O{sub 2}/H{sub 2}O/N{sub 2}. The same parameters plus pressure were studied in the high pressure electrobalance. Essentially all runs were carried out at volumetric flow rates sufficiently large to eliminate external mass transfer resistance. The initial regeneration rate was found to be a weak function of temperature and to be first-order in ... continued below

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35 p.

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Creator: Unknown. April 1, 1998.

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Description

The last experimental tests involving FeS regeneration in both the atmospheric pressure and high pressure electrobalance reactors were completed during the quarter. The effects of temperature, reactant composition, and flow rate were studied in the atmospheric pressure electrobalance in atmospheres of O{sub 2}/N{sub 2}, H{sub 2}O/N{sub 2}, and O{sub 2}/H{sub 2}O/N{sub 2}. The same parameters plus pressure were studied in the high pressure electrobalance. Essentially all runs were carried out at volumetric flow rates sufficiently large to eliminate external mass transfer resistance. The initial regeneration rate was found to be a weak function of temperature and to be first-order in both O{sub 2} and H{sub 2}O. In tests involving both O{sub 2} and H{sub 2}O, the initial reaction rate was equal to the sum of the individual rates involving O{sub 2} only and H{sub 2}O only. The effect of pressure on the initial reaction rates in high pressure tests was somewhat unexpected in that the initial rate increased with pressure between 1 and 5 atm, and subsequently decreased between 5 and 15 atm. Statistical analysis and correlation of the electrobalance data have been completed and results are presented in this report. Equations for the initial rate of regeneration of FeS in O{sub 2} and H{sub 2}O as a function of temperature and reactive gas concentration have been developed. Slow progress has been made with the fixed-bed reactor. A number of reactor scoping tests involving FeS regeneration in O{sub 2} and H{sub 2}O, and CeO{sub 2} sulfidation in H{sub 2}S were completed during the quarter. Chromatographic product gas analysis is now working reliably. Final repairs on the PMT temperature controller for the Antek total sulfur analyzer were completed and the unit seems to be functioning as expected. The Antek and GC responses in FeS regeneration runs in which all sulfur should be liberated as SO{sub 2} tracked reasonably well.

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35 p.

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OSTI as DE98004542

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  • Other Information: PBD: [1998]

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  • Other: DE98004542
  • Report No.: DOE/MC/30012--5305
  • Grant Number: AC21-94MC30012
  • DOI: 10.2172/585059 | External Link
  • Office of Scientific & Technical Information Report Number: 585059
  • Archival Resource Key: ark:/67531/metadc694976

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  • April 1, 1998

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Nov. 10, 2015, 6:50 p.m.

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Advanced sulfur control concepts in hot-gas desulfurization technology. Quarterly report, January 1, 1996--March 31, 1996, report, April 1, 1998; United States. (digital.library.unt.edu/ark:/67531/metadc694976/: accessed December 12, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.