Gas separation: processes – Liquid contacting – Inorganic gas – liquid particle – or solid particle sorbed
Reexamination Certificate
2005-08-22
2008-08-26
Lawrence, Frank M (Department: 1797)
Gas separation: processes
Liquid contacting
Inorganic gas, liquid particle, or solid particle sorbed
C423S235000
Reexamination Certificate
active
07416582
ABSTRACT:
A cyclic process for the removal of NOxfrom a NOxcontaining feed gas, and optionally removal mercury vapour and/or sulfur dioxide is provided. A process is also provided by which an iron chelate absorbent may be thermally regenerated.
REFERENCES:
patent: 4087372 (1978-05-01), Saitoh et al.
patent: 4091074 (1978-05-01), Gorai et al.
patent: 4126529 (1978-11-01), DeBerry
patent: 4158044 (1979-06-01), Takabatake et al.
patent: 4372932 (1983-02-01), Hass
patent: 4386058 (1983-05-01), Hass
patent: 4418044 (1983-11-01), Kulik
patent: 4612175 (1986-09-01), Harkness et al.
patent: 4778664 (1988-10-01), Grinstead
patent: 4804522 (1989-02-01), Hass
patent: 4879102 (1989-11-01), Hoppe et al.
patent: 5200160 (1993-04-01), Benson et al.
patent: 5320816 (1994-06-01), Tsai et al.
patent: 5433934 (1995-07-01), Chang et al.
patent: 5489421 (1996-02-01), Van Velzen et al.
patent: 5683666 (1997-11-01), Berisko
patent: 5785841 (1998-07-01), Tseng
patent: 5891408 (1999-04-01), Buisman et al.
patent: 6328939 (2001-12-01), Amrhein
patent: 2003/0026744 (2003-02-01), Hakka et al.
patent: WO 03/013701 (2003-02-01), None
Richard J. Walker and Henry W. Pennline “Absorption, Electrodialysis, and Additional Regeneration in Two Flue Gas so2/NOx” paper No. 58d presentation at the Symposium on Membrane Process for Pollution Control at the 1987 Annual Meeting of the American al Institute of Chemical Engineers, New York, New York, Nov. 15-20, 1987.
Elzo Sada, Hidehiro Kumazawa, and, Hiroshi Hikosaka “A Kinetic Study of Absorption of NO into Aqueous Solutions of Na2So3with added FeII-edta Chelate” Ind. Eng. Chem. Fundam, 1986, vol. 25, pp. 386-390.
Kevin D. Welch, T. Zane Davis, and Steven D. Aust “Iron Autoxidation and Free Radical Generation Effects of Buffers, Ligands, and Chelators” Archives of Biochemistry and Biophysics, vol. 397, No. 2, Jan. 15, 2002, pp. 360-369.
J. Karhu, S.L. Alvarez Cresop, L. Jarju and A. Ivaska “Recovery of the Chelating Agent Edta and Dtpa from Pulping Process Solutions” Laboratory of Analytical Chemistry Abo Akademi University Biskopsgatan 8, FIN-20500 Abo, Finland. Preprints of the 1998 International Bleaching Conference, Helsinki, Jun. 1-5, pp. 673-678.
Daniel C. Harris and Philip Aisen “Facilittation of Fe (II) autoxidation by Fe (III) Complexing agents” Biochimica et Biophysica Acta, 329 (1973) pp. 156-158.
Tomasz T. Suchecki and Hidehiro Kumazawa “Absorprtion of Nitrogen Oxide of Low Concentrations into Aqueous Solutions of Na2So3and Fe(II) edta with added N2H4” Archives of Environmental Protections, vol. 24, No. 4, pp. 35-57 (1998).
K. Smith, L. Benson, S. Tseng, P. Bergman and M. Babu “Enhanced NOxremoval in Wet Scrubbers Using Metal Chelates Testing at Miami Fort Pilot Plant”, Proceedings of the 1992 Clean Coal Conference.
Susan S. Tsai, Stephen A. Bedell, Larry H. Kirby and Donna J. Zabcik “Field Evaluation of Nitric Oxide abatement in Wet Flue Gas Using Ferrous Chelagets” Prepared for Presentation at the 1998 AICHE summer meeting Denver, Colorado, Innovative Techniques for Flue Gas Cleanup, paper #81B.
Hakka Leo E.
Ouimet Michel A.
Ryan Colin Francis
Sarlis John Nicolas
Bereskin & Parr
Cansolv Technologies Inc.
Lawrence Frank M
Mendes da Costa Philip C.
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