| 摘要 |
<p>PROBLEM TO BE SOLVED: To efficiently perform the evaporation/concentration of wastewater in the evaporator and also to stably operate the evaporation/concentration equipment by recovering the heat energy of steam generated in and discharged from an evaporator, with an absorption heat pump and supplying the recovered heat energy to a heater for the evaporator. SOLUTION: In this equipment, a part or all of generated steam 6 in an evaporator 2 is transferred to an absorption heat pump 29 and hot water 23 heated in the heat pump 29 is transferred to a circulation water tank 24 and there, mixed with condensed water 22 of plant steam 21. The resulting hot water in the circulation water tank 24 is transferred to a heater 3 through a pump 26a and the circulation hot water 25a (hot) introduced to the heater 3 flows out from the heater 3 as circulation hot water 25b (cooled). Also, a part of the circulation hot water 25b is transferred to the absorption heat pump 29 as circulation hot water 27 and the other part is transferred to a steam generation plant. On the other hand, a part of the generated steam 6 in the evaporator 2 is transferred to a cooler 7 and there, cooled to form condensed water 8a.</p> |
