| 摘要 |
<PICT:0642166/III/1> An evaporator for whey and similar liquids comprises an evaporation chamber 8, Fig. 1, under reduced pressure, communicating with a plate heater 3, 4, 5. The latter comprises a set of plates 4 in which the whey is heated and circulated to and from the evaporation chamber, and a set of plates 3 in which fresh whey is preheated by condensate from the set of plates 5 in which the evaporated vapours are condensed. The evaporated product is withdrawn batchwise or continuously from pipe 27. |
