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US 6,149,880 AGranted
Method and apparatus for treating aqueous medium containing organic matter
AssigneeEbara Corporation
InventorsTsutomu Higo, Roberto Masahiro Serikawa, Kazuhiro Kondo
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Abstract
A hydrothermal reaction is performed on an aqueous medium without adding an oxidizing agent, and then another hydrothermal reaction is performed in the presence of an oxidizing agent, thereby reducing a chemical oxygen demand of the aqueous medium. An apparatus for performing a hydrothermal reaction has a fluid inlet being capable of introducing an oxidizing agent in a fluid form during a hydrothermal reaction.
Claims15
An apparatus for performing a hydrothermal reaction which comprises:
- a reaction vessel for performing a hydrothermal reaction, the reaction vessel withstanding a high internal pressure required for a hydrothermal reaction and having an "S" shaped top portion, and the height of the reaction vessel being at least five times greater than a dimension of the reaction vessel in a transverse direction;
- a heater for heating the reaction vessel;
- a liquid inlet for introducing an aqueous medium into the reaction vessel;
- a liquid outlet for discharging an aqueous medium from the reaction vessel;
- a gas outlet for discharging a gas;
- a gas-liquid separator installed inside of the top portion of the reaction vessel;
- and
- a fluid inlet being capable of introducing an oxidizing agent in a fluid form during a hydrothermal reaction.
5 more elements
Dependencies are inferred from the claim text.