| 摘要 |
Provided is a cleaning system (1), suitable for chemically removing limescale from a plate heat exchanger(9), having at least one inlet (8a, 8b) and at least one outlet (13a, 13b), by contacting and reacting the limescale in the plate heat exchanger (9) with an acidic solution (descaler, 3). The system comprises a first pressurisable container (2) having a descaler portion to accommodate descaler, and a gas portion (35) to accommodate gas; a primer (37) for pre-pressurising said first pressurisable container; and at least one first conduit (7a, 7b) for establishing a fluid connection between the descaler portion (34) of said first pressurisable container (2) and the inlet(s) (8a, 8b)on a plate heat exchanger (9).The system also comprises a second pressurisable container (11) having;at least one second conduit (12a, 12b) for establishing a fluid connection between the outlet(s) (13a, 13b) on the plate heat exchanger (9) and said second pressurisable container (11); and a reaction product portion (38) to accommodate reaction products, and a gas portion (39) to accommodate reaction product gas. The system also comprises a third conduit(19) comprising a valve: (21). The third conduit (19) is positioned to establish a fluid connection between the gas portion (39) of said second pressurisable container (11) and the gas portion (39) of said first pressurisable container (2) so as to recycle reaction product gas to the gas portion (35) of said first pressurisable container (2), and thereby re-pressurize said first pressurisable container (2). The valve (21) restricting said fluid connection between said first and second pressurisable containers (2, 11). Also provided is a method of cleaning said exchangers using this system. |
