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. 17, 1997
Filed:
Dec. 15, 1993
Applicant:
Inventor:
Carlos Nagib Khalil, Rio de Janeiro, RJ, BR;
Assignee:
Petroleo Brasileiro S.A. - Petrobras, Rio de Janiero, BR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ; B08B / ;
U.S. Cl.
CPC ...
134 18 ; 134 2212 ; 134 2213 ; 134 2214 ; 134 40 ; 166309 ;
Abstract
A process for the thermo-chemical dewaxing of hydrocarbon transmission is described, which comprises, after assessment of the conduit internal effective volume, treating the wax-containing conduit with a water-in-oil emulsion, co-currently to the production flow. The emulsion contains inorganic reactants which generate nitrogen and heat, which fluidize the paraffin deposit which is later driven off by cleaning beds. The percentual of removed paraffin is known by assessing the final internal effective volume.