Thermal process for removal of contaminants from process streams

Details Thermal process for removal of contaminants from process streams Thermal process for removal of contaminants from process streams

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.

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