| 摘要 |
PCT No. PCT/GB87/00003 Sec. 371 Date Oct. 6, 1987 Sec. 102(e) Date Oct. 6, 1987 PCT Filed Jan. 7, 1987 PCT Pub. No. WO87/04084 PCT Pub. Date Jul. 16, 1987.A reboiler and method of generating vapor from a liquid comprising a rectifying section and an evaporating section in which the evaporating section comprises a plurality of upright evaporator tubes (2) connected at their upper ends to a tube sheet (6), means for supplying liquid to the evaporator tubes and means (22) for heating the surface of evaporator tubes (2), the lower ends (4) of the evaporator tubes being sealed and each evaporator tube being provided with a concentrically positioned inner tube (8) extending from the upper end of each evaporator tube (2) to a position above the sealed end (4) of each evaporator tube and in which the rectifying section comprises a series of trays containing liquid and means for directing vapor generated in the evaporating section through the trays.
|
