EXHAUST HEAT COLLECTION DEVICE

摘要

PURPOSE:To avoid the fluctuations in the water level in a drum or burning of a heat exchanger element by dividing a heat exchanger chamber into a plurality of chambers and laying out the heat exchanger element in an elevation below the water level of a steam separator drum. CONSTITUTION:The interior of a heat exchanger chamber 1 is divided into chambers 22 and 23 by means of a partitioning wall 21. An inlet duct 3 is installed to one chamber so as to introduce an exhaust gas while an outlet duct 6 is installed to the other chamber so as to discharge the exhaust gas. It is arranged that the exhaust gas be discharged after having heat-exchanged with a heat exchanger element 2 in each divided chamber one after another. Furthermore, the heat exchanger element 2 is laid out in such a fashion that it may be positioned in an elevation below the water level. of a steam separator 12. Since the heat exchanger element 2 is always positioned below the water level of the steam separator drum 12, it is possible to minimize the fluctuations in a weight of the steam separator 12 when starting or halting the operation. Furthermore, this construction makes it possible to maintain the steam separator drum which is constantly filled with boiler water and hence protect the heat exchanger element 2 from burning.