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:
Sep. 20, 1977
Filed:
Oct. 10, 1975
Janina Majewska, Lodz, PO;
Wiktor Grams, Lodz, PO;
Zbigniew Rybicki, Lodz, PO;
Jozef Banasiak, Lodz, PO;
Instytut Wlokien Chemicznych, Lodz, PO;
Abstract
This invention relates to a method for purifying waste air from sulphuric gases, in particular from hydrogen sulphide, carbon disulphide and sulphur dioxide by adsorption and oxidation in a bath containing inorganic oxidizing compounds soluble in water, e.g. hypochlorites of alkali metals, preferably sodium hypochlorite in an amount equivalent to at least 0.1 g, preferably 3-5 g of available chlorine per 1 liter of bath and, if need be additions in the form of chemisorbents such as polyethylene glycol or aliphatic amines in an amount of at least 0.005 g/l of bath, and/or oxidation catalysts such as vanadium and/or palladium salts in an amount of at least 0.01 g/l of bath, and/or organic oxidizing compounds soluble in water such as hydroquinone in an amount of at least 0.1 g/l of bath, with a pH-value of 9-12, in a closed cycle of bath.