Patent ID: 7900691
Filing Date: 2011-03-08
Classification: F28D,F28G

Abstract:
1. A heat exchanger vessel comprising: an outer shell, the outer shell comprising at least one inlet and at least one outlet for a second fluid; a bundle of heat exchanger tubes arranged in the outer shell wherein the heat exchanger tubes are arranged in a substantially tubular mid-section of the vessel and extend substantially parallel to each other between a pair of perforated partitioning walls that are arranged near the ends of the tubular mid-section; an inlet for a first fluid to which the bundle of heat exchanger tubes is coupled; an outlet for the first fluid to which the bundle of heat exchanger tubes is coupled; at least one inlet for a second fluid connected to the outer shell wherein the at least one inlet for the second fluid debouches into the interior of the tubular mid-section at a location near one partitioning wall and wherein the at least one inlet for the second fluid is provided with a particle injector adapted to inject cleaning particles into the second fluid, the particles effective to clean the space between the outer surfaces of the heat exchanger tubes and the inner surface of the heat exchanger vessel; at least one outlet for a second fluid connected to the outer shell wherein the outlet for the section fluid debouches into the interior of the tubular mid-section at a location near the other partitioning wall and wherein the at least one outlet for the second fluid is provided with a particle separator effective to remove particles from the second fluid; and a series of distribution plates that are arranged in the space between the outer surfaces of the heat exchanger tubes and the inner surface of the tubular mid-section of the heat exchanger vessel to create an equally distributed flow of the cooling water and fluidized bed of cleaning particles throughout the height of the tubular mid section, wherein the at least one inlet for the second fluid comprises a lower inlet and an intermediate inlet, and wherein the series of distribution plates are arranged at different levels in the interior, including one distribution plate between the lower inlet and the intermediate inlet.