The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 1998
Filed:
Jan. 28, 1997
Isoo Shimizu, Yokohama, JP;
Jun-ichi Kohhashi, Yokohama, JP;
Nippon Petrochemicals Company, Limited, Tokyo, JP;
Abstract
A wet oxidizing process for waste soda to attain stable cooling and complete gas-liquid separation of waste soda which is discharged from a wet oxidation reactor for alkali waste liquid, and which process comprises the steps of (1) and (2) and optionally any one of steps (3) to (5), wherein (1) a wet oxidation step in which the alkali waste liquid is brought into contact with excess molecular oxygen, said alkali waste liquid being obtained by bringing an aqueous alkali into contact with a hydrocarbon fluid containing acidic substances of hydrogen sulfide and carbon dioxide, (2) a reducing step to reduce the pressure of a mixture of the oxidized alkali waste liquid from said wet oxidation step and a surplus gas, (3) a separation step to separate said mixture into a gas phase and a liquid phase in a gas-liquid separation tank, (4) a cooling step to cool the separated liquid phase and (5) another cooling step to cool the separated gas phase.