Abstract: One embodiment can be an apparatus for contacting a first liquid and a second liquid. The apparatus can include a vessel, which in turn, may include at least one wall, a first member, and a funnical frustum. The at least one wall can form a perimeter about an interior space. Also, the first member can be positioned within the interior space and form a plurality of passageways. Each passageway may be bordered by a first side and a second side from an outer region to an interior surface of the first member. Generally, the funnical frustum is positioned downstream of the first member to facilitate a swirling of at least one of the first and second liquids.