Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1995-03-27
1996-10-08
Evans, Joseph E.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
549538, C07D30110, C07D30132, C07D30704
Patent
active
055632823
ABSTRACT:
A method of controlling the build-up of organic and/or inorganic contaminants (e.g., carbonates, nitrates, nitrites, and the like) in an aqueous process stream, comprising directing at least some of the contaminated stream to a heating means wherein at least some of the contaminants are decomposed. Thereafter, the decomposition products are removed and the purified stream is returned to the process. In a preferred embodiment, the process is an alkylene oxide manufacturing process, and the contaminated aqueous stream is the effluent from a catalyzed scrubbing system for removal of carbon dioxide. Organic contaminants are decomposed to carbon dioxide, which is flashed off; inorganic salts which are decomposed to gases are flashed off; inorganic salts which are not converted to gases are scrubbed out.
REFERENCES:
patent: 1403160 (1922-01-01), Haner, Jr.
patent: 1483160 (1924-02-01), Creighton
patent: 1522091 (1925-01-01), Alexander
patent: 2238007 (1941-04-01), Badenhausen
patent: 2673787 (1954-03-01), Greenawalt
patent: 2690425 (1954-09-01), Moses et al.
patent: 2691569 (1954-10-01), Miller
patent: 2737445 (1956-03-01), Nossen
patent: 3113833 (1963-10-01), Bergstrom et al.
patent: 3333917 (1965-02-01), Bergholm
patent: 3762989 (1973-10-01), Timpe
patent: 3900554 (1975-08-01), Lyon
patent: 3907969 (1975-09-01), Field
patent: 4071612 (1978-01-01), Weyer et al.
patent: 4100263 (1978-07-01), Miller
patent: 4141963 (1979-02-01), Miller
patent: 4206186 (1980-06-01), Holter et al.
patent: 4208245 (1980-06-01), Watkins et al.
patent: 4303477 (1981-12-01), Schmidt et al.
patent: 4637858 (1987-01-01), Matovich et al.
patent: 4981659 (1991-01-01), Chuang et al.
patent: 5021383 (1991-06-01), Berty
patent: 5059405 (1991-10-01), Watson et al.
patent: 5114692 (1992-05-01), Berty
patent: 5233060 (1993-08-01), Pendergast et al.
patent: 5336791 (1994-08-01), Jennings et al.
"Screening Tests of Sodium Nitrite Decomposition", Kramer, et al., Solar Energy Materials 6 (1981) pp. 85-95.
"Preparation of Fine Oxide Powders by Evaporative Decomposition of Solutions", Roy, et al., Ceramic Bulletin, vol. 56, No. 11 (1977) pp. 1023-1024.
"A New High Temperature Aerosol Decomposition Process for the Synthesis of Mixed Metal Oxides for Ceramics and Catalysts and their Characterization", Moser, et al., Chem. Eng. Comm., 1989, vol. X, pp. 1-19.
"A Novel Synthetic Method for the Preparation of Oxide Superconductors: Anionic Oxidation-Reduction", Kourtakis, et al., Journal of Solid State Chemistry, 82, pp. 290-297 (1989).
"Thermal Decomposition of Calcium Nitrate and Its Application in the Nitrogen Fertilizer Industry", Van Den Berg, et al., Chemie-Ing.-Techn., 47 (20) pp. 845-846 (1975).
McCain James H.
Naumann Alfred W.
Wang Wei-Yeong
Evans Joseph E.
Mauro J. B.
Union Carbide Chemicals & Plastics Technology Corporation
LandOfFree
Thermal process for removal of contaminants from process streams does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thermal process for removal of contaminants from process streams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal process for removal of contaminants from process streams will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-58547