| 摘要 |
<p>PURPOSE:To recover heat at low cost by connecting a part of an outlet path for a concentrated solution to a flow path for a dilute solution, and providing a flow path through which a concentrated liquid is recycled to the concentrated solution side of a regenerator in a concentration device equipped with a heat pump having a heating tower using brine. CONSTITUTION:A heat pump 1 is connected to a heating tower 2, and a solution heating concentration device 4 is connected to a brine heat collection path 3. The solution heating concentration device 4 is equipped with a regenerator 5, a condenser, a heat exchanger 7 and a diluted solution flow path 8. A concentrated solution outlet of the regenerator 5 is linked to the heat exchanger through a concentrated solution flow path 9. The condenser 6 has a condensed liquid outlet 10, and is provided with a path which permits a part of a concentrated solution path 9 communicating with the concentrated solution outlet of the regenerator 5 to branch out and connect with a diluted solution path 11 leading to the regenerator 5, and a path which permits a part of the concentrated liquid outlet 10 communicating with the concentrated liquid outlet of the condenser 6 to branch out and lead to the concentrated solution side of the regenerator. Heat is recovered stably and at low cost by permitting a part of the path to branch out.</p> |
