134 



Continuous Process Evaporators 



tion ()f the cnlire batch is completed. Then the pan must be 

 emptied 1:)efi)re more milk can be dra\vn in. In a similar man- 

 ner, in the Campbell process, evaporation of the entire batch 

 must 1)6 c()m|)leted before anv of the finished product leaves the 

 evaporating- vat oi' tank. The operation in either case is inter- 

 mittent and not continuous. 



Of more recent years, equipment and pnicesses ha\'e been 

 developed that make possible continuous operation. That is the 

 fresh milk enters the machine and the condensed milk leaves it 

 simultaneously and continuously. So far tv.x> types i)f continuous 

 machines have been perfected sufficiently to make them com- 

 mercially practical and usable, namely the Buflo\'ak I-iapid Cir- 

 culation I^\-ap(jrator, invented and manufactured by the Bufifalo 

 Foundry and Machine Co., BuiTalo, N. Y., and the Continuous 

 Concentrator, in\-entcd by the By-Products Reco\-ery C(j., To- 

 ledo, Ohio, and manufactured by the Creamery Package Manu- 

 facturing Co., Chicago. 



BUFLOVAK RAPID CIRCULATION EVAPORATOR 



This type of 

 Evaporator has been 

 developed frcim the 

 standard return-flue 

 tubular boiler and 

 adopted for the spe- 

 cial purpose of hand- 

 ling- foamy and del- 

 icate liquors. 



Construction. — 

 The Buflo\ak Rapid 

 Circulation E\'apora- 

 tor consists of a 

 horizontal cylindric- 

 al vapor body. To 

 this is bolted an in- 

 c 1 i n e d c)dindrical 

 steam-chest. 



The A-apor body 



is cquipi)ed with a Fig 50. The Buflovak rapid circulation evaporator 

 i ' ' Courtesy of Buftnlo Foundry & Machine Co. 



