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:
Aug. 03, 1982
Filed:
Jan. 09, 1981
Applicant:
Inventors:
Joe C Steelhammer, Lansdale, PA (US);
Paul J Hutta, Warminster, PA (US);
Assignee:
Betz Laboratories, Inc., Trevose, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423242 ; 252397 ; 252400 ; 423243 ; 4235 / ;
Abstract
An improved method for inhibiting sulfite oxidation in scrubber liquor of the type containing sulfite species is disclosed. A topping agent selected from the group consisting of polyphosphate compounds, and organo-phosphonic acid compounds, and mixtures thereof, is added to the scrubbing liquor to supplement and enhance the antioxidant activity of sulfite antioxidant agents such as the linear polyethyleneamines and substituted secondary and tertiary aromatic amines.