High-temperature desulphurization of low-CV fuel gas

Schrodt, J. Thomas; Hilton, Glenn B.; Rogge, Charles A.

doi:10.1016/0016-2361(75)90042-3

Cited by 19 publications

(11 citation statements)

References 4 publications

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“…Zinc oxide, because of its favorable sulfidation thermodynamics, appears to be the most attractive of the sorbents reported, , and current practical research seems to be concentrated on zinc titanate and zinc ferrite. ,− …”

Section: Introductionmentioning

confidence: 99%

Modification of ZnO−TiO₂ High-Temperature Desulfurization Sorbent by ZrO₂ Addition

and¹,

Sada²,

Manabe³

et al. 1999

Ind. Eng. Chem. Res.

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To develop a highly reactive and easily regenerable zinc oxide high-temperature desulfurization sorbent, a modification of ZnO−TiO2 by addition of ZrO2 was studied. The metal oxides ZnO−TiO2−ZrO2 were prepared by a coprecipitation method: the amount of ZnO was a fixed 50 mol % of the sample. In this study, it was found that the addition of 5 or 10 mol % ZrO2 to 50 mol % ZnO−50 mol % TiO2 greatly improved the reactivity for H2S removal. Furthermore, the addition of ZrO2 improved its regenerability: the temperature for the regeneration of the sample was decreased to ca. 40 °C in the absence of H2O and ca. 75 °C in the presence of 10% H2O by the addition of 10% ZrO2.

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Section: Introductionmentioning

confidence: 99%

Modification of ZnO−TiO₂ High-Temperature Desulfurization Sorbent by ZrO₂ Addition

and¹,

Sada²,

Manabe³

et al. 1999

Ind. Eng. Chem. Res.

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“…From the standpoint of desulfurization efficiency, zinc oxide is the most attractive among the sorbents reported because of its favorable sulfidation thermodynamics (Schrodt et al, 1975; Westmoreland and Harrison, 1976). For this reason, current practical research seems to be concentrated on zinc oxide (Focht et al, 1988; Gangwal et al, 1989; Lew et al, 1989;Sa et al, 1989; Jothimurugesan and Harrison, 1990; Woods et al, 1990; Ayala et al, 1991;Silaban et al, 1991;Lew et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

Catalytic Activity of ZnS Formed from Desulfurization Sorbent ZnO for Conversion of COS to H2S

Sasaoka

Taniguchi

Hirano

et al. 1995

Ind. Eng. Chem. Res.

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“…Food Chem., 24,620-4 (1976). (18) Ungefug, G. A., Scherer, K. V., Tetrahedron Lett., 33,2923-6 (1970). (19) Weseloh, D. V., Mineau, P., Hallett, D. J., Trans.…”

mentioning

confidence: 99%

“…Thermodynamic properties of iron sulfides (3)(4)(5)(6) and the kinetics of their aqueous reactions (7,8) have also been reported under carefully controlled laboratory conditions. However, the roles of iron sulfides in emerging advanced environmental control technologies have only recently been examined for their applicability to coal combustion (9-13) and low-Btu gasification of coal (14)(15)(16)(17)(18)(19)(20). Recently, FeS has been cited (9)(10)(11)(12)(13) as a possible substitute 1 Present address, Resource Technologies Group, Inc., Route 2, Box 93A, Morgantown, W. Va. 26505.…”

mentioning

confidence: 99%

Aqueous scrubber reactions of pyrrhotite (FeS) with sulfur dioxide

Case¹,

Green²,

Stewart³

1980

Environ. Sci. Technol.

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curred subsequently to discharge to the lake, since mirexcontaminated sediments did not have a significant amount of 8-monohydromirex compared to mirex (2, 6 ) . Because a large proportion (>30%) of the mirex-related compounds in biota are photodegradation products, most of the mirex which entered the food web must have been held in the water column and recycled to the surface of the lake over a period of years. Alternatively, the rate of photolysis may have been enhanced by some unknown mechanism in association with dissolved organic matter, particle surfaces, or phytoplankton.The constancy of the ratio of 8-monohydromirex to mirex levels in Lake Ontario herring gul1,eggs over the years 1972 to 1978 is shown in Table IV. The ratio h samples of five species of fish (coho salmon, alewives, smelt, carp, and eel) from Lake Ontario in 1977 was also in the range 0.3-0.4 (6, 7). These data suggest that an equilibrium between input to the lake and photodegradation existed. However, the declines in mirex levels in herring gull eggs since 1974 ( 1 9 ) , presumably associated with cessation of direct discharge to the lake, should have resulted in an increase in the ratio if photodegradation had been occurring throughout this period. That portion of the mirex and photomirex in the lake which is available for bioaccumulation in fish and herring gulls must therefore be protected from further photodegradation by being sequestered and cycled between and within various food webs over a period of several years. The data also indicates that mirex in the sediments is not being recycled into the ecosystem at an appreciable rate.

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High-temperature desulphurization of low-CV fuel gas

Cited by 19 publications

References 4 publications

Modification of ZnO−TiO₂ High-Temperature Desulfurization Sorbent by ZrO₂ Addition

Modification of ZnO−TiO₂ High-Temperature Desulfurization Sorbent by ZrO₂ Addition

Catalytic Activity of ZnS Formed from Desulfurization Sorbent ZnO for Conversion of COS to H2S

Aqueous scrubber reactions of pyrrhotite (FeS) with sulfur dioxide

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High-temperature desulphurization of low-CV fuel gas

Cited by 19 publications

References 4 publications

Modification of ZnO−TiO2 High-Temperature Desulfurization Sorbent by ZrO2 Addition

Modification of ZnO−TiO2 High-Temperature Desulfurization Sorbent by ZrO2 Addition

Catalytic Activity of ZnS Formed from Desulfurization Sorbent ZnO for Conversion of COS to H2S

Aqueous scrubber reactions of pyrrhotite (FeS) with sulfur dioxide

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Modification of ZnO−TiO₂ High-Temperature Desulfurization Sorbent by ZrO₂ Addition

Modification of ZnO−TiO₂ High-Temperature Desulfurization Sorbent by ZrO₂ Addition