US 9,810,492 B2
Method and system for the in-situ removal of carbonaceous deposits from heat exchanger tube bundles
Michael Tomkins, Sherwood Park (CA); and Robert Larsen, Wetaskiwin (CA)
Assigned to T5 TECHNOLOGIES, INC., (CA)
Filed by T5 Technologies, Inc., Edmonton (CA)
Filed on Feb. 26, 2014, as Appl. No. 14/190,230.
Claims priority of provisional application 61/769,529, filed on Feb. 26, 2013.
Prior Publication US 2014/0238437 A1, Aug. 28, 2014
Int. Cl. B08B 3/00 (2006.01); F28G 9/00 (2006.01); B08B 9/032 (2006.01); B08B 9/023 (2006.01); B08B 3/08 (2006.01); B08B 3/02 (2006.01); B08B 3/14 (2006.01); B08B 9/027 (2006.01); B08B 9/02 (2006.01); B08B 3/04 (2006.01); F28D 7/16 (2006.01)
CPC F28G 9/00 (2013.01) [B08B 9/023 (2013.01); B08B 9/0323 (2013.01); B08B 3/00 (2013.01); B08B 3/02 (2013.01); B08B 3/04 (2013.01); B08B 3/08 (2013.01); B08B 3/14 (2013.01); B08B 9/02 (2013.01); B08B 9/027 (2013.01); B08B 9/032 (2013.01); F28D 7/16 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for the in-situ treatment of a heat exchanger tube bundle to remove carbonaceous deposits, said method comprising
a. analyzing the heat exchanger tube bundle to determine an amount of organic solvent necessary to effectively remove the carbonaceous deposits from the heat exchanger tube bundle without the organic solvent reaching its saturation point;
b. providing a source of organic solvent;
c. creating a closed system wherein the organic solvent is in fluid communication with the heat exchanger tube bundle, the closed system being configured so that a volume of the closed system is sufficient to prevent the organic solvent from reaching its saturation point;
d. bringing the organic solvent to a temperature at which it is effective to remove carbonaceous deposits from the heat exchanger tube bundle; and
e. contacting the heat exchanger tube bundle with the organic solvent to remove carbonaceous deposits from the heat exchanger tube bundle, resulting in a contaminated organic solvent comprising soluble hydrocarbons; and
f. recovering the organic solvent, the recovery comprising treating the contaminated organic solvent to remove soluble hydrocarbons;
wherein the heat exchanger tube bundle is not removed from its associated process equipment during treatment.