EVAPORATION DEVICE

An evaporation device of the present invention includes an agitation vessel to which a raw material liquid is supplied, wherein the agitation vessel has a volatile component outlet and a concentrate outlet; a jacket provided on an outer circumference of the agitation vessel and configured to heat an inner wall of the agitation vessel; and a liquid-distributing portion provided within the agitation vessel and configured to cause the raw material liquid to flow down the inner wall of the agitation vessel, wherein the agitation vessel includes at least one storage portion surrounded by a bottom of the agitation vessel, the inner wall, and a partition wall portion and configured to temporarily store the raw material liquid that has flowed down, the liquid-distributing portion is constituted by a rotating shaft and at least one channel part having a flow passage in which, as the rotating shaft rotates, the raw material liquid temporarily stored in the storage portion flows upward from a lower side of the agitation vessel and the channel part being mounted to the rotating shaft, and the concentrate outlet is provided in the bottom of the agitation vessel.