Chemistry of inorganic compounds – Sulfur or compound thereof – Elemental sulfur
Patent
1997-03-17
1998-12-01
Straub, Gary P.
Chemistry of inorganic compounds
Sulfur or compound thereof
Elemental sulfur
4236481, 20415719, 20415752, C01B 1704, C01B 304
Patent
active
058433953
ABSTRACT:
A process using high-temperature thermal dissociation to recover hydrogen and salable sulfur from industrial waste streams containing hydrogen sulfide (H.sub.2 S) is disclosed. Thermal dissociation occurs in a thermoelectric reactor at temperatures up to 1900.degree. C. Waste energy from the high-temperature reactor is recovered and used to preheat the H.sub.2 S-laden stream before entering the high-temperature reactor. Sulfur is separated out in a condenser. The process also includes a scrubber to eliminate the carryover of liquid sulfur mists or aerosols, and a membrane to separate the hydrogen from the dissociated product stream. Trace amounts of unconverted H.sub.2 S are recycled through the process for further dissociation.
REFERENCES:
patent: 3856925 (1974-12-01), Kodera et al.
patent: 4066739 (1978-01-01), Chen
patent: 4094962 (1978-06-01), Cocuzza et al.
patent: 4302434 (1981-11-01), Hellmer et al.
patent: 4461755 (1984-07-01), Daley et al.
patent: 4481181 (1984-11-01), Norman
patent: 4695446 (1987-09-01), Bogdanovic
patent: 4999178 (1991-03-01), Bowman
patent: 5211923 (1993-05-01), Harkness et al.
patent: 5614156 (1997-03-01), Wang
Zaman, J. and A. Chakma, "A Simulated Study on the Thermal Decomposition of H.sub.2 S in a Membrane Reactor", Int. J. Hydrogen Energy, vol. 20, 21-28 (1995).
Woiki, D. and P. Roth, "Kinetics of the High-Temperature H.sub.2 S Decomposition," J. Phys. Chem. 98, 12958-12963 (1994).
Kaloidas, V and N. Papayannakos, "Kinetics of Thermal, Non-Catalytic Decomposition H.sub.2 S," Journal Engineering Science, 44, 2493-2500 (1989).
Edlund, D.J. and W.A. Pledger, "Thermolysis of Hyrogen Sulfide in a Metal-Membrane Reactor," Journal Membrane Science, 77, 255-263 (1993).
Olsen, John C, Unit Processes & Principles of Chemical Engineering D. Van Nostrand & Co NY NY 1932 pp. 1-3.
Kier Philip H.
Straub Gary P.
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