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:
Jun. 02, 1981
Filed:
Jun. 18, 1980
Applicant:
Inventor:
Aaron J Teller, Westboro, MA (US);
Assignee:
Teller Environmental Systems, Inc., Worcester, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
423238 ; 4232155 ; 423305 ; 423310 ; 423313 ; 423240 ; 71 34 ; 55 68 ; 55 71 ; 55 73 ;
Abstract
Process and apparatus are described for an improved treatment of gases effluent from an ammonia phosphoric acid reactor in the manufacture of fertilizers. Ammonia is scrubbed from the gases with aqueous acid, preferably concentrated phosphoric acid, and particulates are captured and removed by contact with solid target particulates, preferably alkaline nephaline syenite. Pond water scrubbing is reduced or eliminated with improved costs and recoveries, secondary pollution is minimized, and land is conserved.