| 摘要 |
1. Falling film evaporator including a bundle of vertical tubes (10) the ends of which are attached to an upper (12) and a lower tube plates, and liquid- distribution device consisting of a perforated plate (22) installed above the upper tube plate, at a distance of it, characterized in that the number of holes (25) bored in the perforated plate (22) is smaller than the number of tubes of bundle (10), in that each hole (25) of the perforated plate is right above the central tube (10a) of a group of tubes (10a + 10b), and in that the opening of the same central tube is covered with a cap (16) the diameter of which is greater that the tube's diameter, and whose edge is at a distance of the upper tube plate (12). |
