| 摘要 |
1533316 Multiple effect desalination apparatus SNAMPROGETTI SpA 12 July 1976 [15 July 1975] 28952/76 Heading B1B In a multiple effect apparatus of the type described in Specification 1396074 and comprising a series of vertically superimposed chambers, condensate passes from one chamber to that below through one or more fall tubes 4 surrounded at the bottom end by a closed sleeve provided with one or more apertures 2 above the level of the end of the tube. The tanks 5 which communicate with the vertically disposed evaporator tubes may be divided by a horizontal partition H, the upper and lower compartments being connected by similar fall tube assemblies E. The apertures 2 may be of such a size that partial evaporation of the saline solution takes place within the sleeve. A further, similar, fall-tube assembly E' acts as an overflow to prevent excessive accumulation of liquid in the upper region of tank 5. |
