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:
Apr. 20, 1982
Filed:
May. 07, 1980
Applicant:
Inventors:
John E Aiken, Monroeville Borough, PA (US);
William J Didycz, Whitehall Borough, PA (US);
Assignee:
United States Steel Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
423210 ; 423245 ; 423247 ; 422111 ; 422112 ; 422177 ; 26034676 ;
Abstract
Systems and methods for directing waste gases to a by-pass conduit from a conduit to a waste gas purifier in response to signals indicating predetermined conditions which are harmful to the waste gas purifier to which the waste gases are normally directed while at the same time maintaining a substantially uniform pressure at the source of the waste gases. Preferably, the source of the waste gases is a scrubber unit for a maleic anhydride production unit. The waste gas purifier is preferably a catalytic oxidation unit for oxidizing hydrocarbons and carbon monoxide in the waste gases.