Method of processing waste gases containing sulphurous-acid anhydride

A method of processing waste gases containing sulphurous-acid anhydride comprises contacting said waste gases with an aqueous solution of sulphuric acid in the presence of oxygen or air and a catalyst comprising an inorganic manganese salt, such as manganese sulphate, perchlorate, chloride, nitrate...

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Bibliographische Detailangaben
Hauptverfasser:	BARANOVA, RIMMA BRONISLAVOVNA, PANFEROVA, ALEXANDRA TIMOFEEVNA, PETRYAEV, PETROVICH EVGENY, BUGAENKO, LENAR TIMOFEEVICH, NIKESHICHEV, JURY NIKOLAEVICH, BYAKOV, VSEVOLOD MIKHAILOVICH, LAZAREV, VLADIMIR ILICH, MIRONOV, NIKOLAI PETROVICH, PINAEV, VIKTOR ALEXANDROVICH, KALYAZIN, EVGENY PETROVICH
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	A method of processing waste gases containing sulphurous-acid anhydride comprises contacting said waste gases with an aqueous solution of sulphuric acid in the presence of oxygen or air and a catalyst comprising an inorganic manganese salt, such as manganese sulphate, perchlorate, chloride, nitrate or phosphate used in an amount of 0.0003-0.03 wt.% based on manganese ion to obtain an aqueous solution of sulphuric acid containing sulphurous-acid anhydride. This solution is subjected to the action of an agent for initiating the oxidation of sulphurous-acid anhydride comprising ionizing radiation to obtain an aqueous solution of sulphuric acid free from sulphurous-acid anhydride. A part of the sulphuric acid is derived from the cycle in the form of the resulting aqueous solution in an amount equivalent to the amount of the oxidized sulphurous-acid anhydride, and the remaining part of the sulphuric acid is fed for contacting with the waste gases.