| 摘要 |
PROBLEM TO BE SOLVED: To provide a multitube heat exchanger and a liquid introduction member, capable of preventing accumulation of solid matters in a treated liquid regardless of arrangement of circulation tubes stored in a storage tube.SOLUTION: A multitube heat exchanger includes: a plurality of circulation tubes 20 in which a treated liquid including solid matters is circulated; a closing plate 30 to which the circulation tubes 20 are fixed in a state of exposing opening portions 22 of the circulation tubes 20 at one face 31; a storage tube 40 storing the circulation tubes 20 inside thereof, and constituted to circulate a heat exchange medium in an internal flow channel 42 closed by the closing plate 30; a communicating portion 60 communicated with the opening portions 22 of the circulation tubes 20 opened at one face 31 of the closing plate 30 in common; and an introduction passage 70 communicated with the communicating portion 60 for introducing the treated liquid to the communicating portion 60, the introduction passage 70 being formed to supply the treated liquid to the communicating portion 60 to increase a speed in the direction toward the communicating portion 60 along the one face 31 of the closing plate 30. |
