Patent ID: 8628628

Claim:
A heat exchanger cleaning device for treating a heat exchanger having a process side and a water side, the cleaning device comprising: at least one cleaning fluid reservoir configured to contain a cleaning fluid; at least one pump; at least one removal conduit configured to remove fluid from the at least one cleaning fluid reservoir, the conduit in fluid communication between the at least one cleaning fluid reservoir and the at least one pump; at least one reintroduction conduit configured to reintroduce the removed fluid into the at least one cleaning fluid reservoir, the reintroduction conduit distinct from the at least one removal conduit and in fluid communication with the at least one pump; at least a first fluid introduction conduit and a second fluid introduction conduit, the first and second fluid introduction conduits releasably connectable to an associated heat exchanger at two separate generally opposed locations, the first and second fluid introduction conduits in fluid communication with the at least one pump; and a controller configured to introduce the cleaning fluid into the associated heat exchanger through the first and second fluid introduction conduits, wherein the cleaning fluid is introduced from the at least one cleaning fluid reservoir into the first and second fluid introduction conduits in an alternating intermittent manner such that the cleaning fluid travels through the first fluid introduction conduit in a first fluid flow direction and the cleaning fluid travels through the second fluid introduction conduit in a second fluid flow direction, wherein the cleaning fluid introduced into the associated heat exchanger from the first fluid introduction conduit travels through the associated heat exchanger in the first fluid flow direction and the cleaning fluid introduced from the second cleaning fluid introduction conduit travels in the second fluid flow direction opposed to the first fluid flow direction.