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. 11, 1987
Filed:
Jun. 23, 1986
J Finley Bush, Plum Borough, PA (US);
Donald R Mydock, Allegheny Township, Armstrong County, PA (US);
Aluminum Company of America, Pittsburgh, PA (US);
Abstract
A process is described for regeneration of an adsorbent having ammonia adsorbed thereon and comprising a mixture of an alumina and a Y zeolite. The adsorbent may be regenerated to substantially its original capacity for adsorbing ammonia by a two step process which comprises first treating the adsorbent with a saturated solution of an alkali metal carbonate such as sodium carbonate to remove a substantial portion of the ammonia sorbed on the adsorbent mixture and then treating the adsorbent in a second step with a saturated alkali metal bicarbonate solution such as sodium bicarbonate to restore the ammonia adsorption capacity of the adsorbent mixture to substantially its original capacity.