Production of nonhygroscopic acid whey powder |
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| 申请号 | US3615663D | 申请日 | 1969-04-14 | 公开(公告)号 | US3615663A | 公开(公告)日 | 1971-10-26 |
| 申请人 | LAVAL SEPARATOR CO DE; | 发明人 | BECKER JAMES JOSEPH; | ||||
| 摘要 | After pasteurizing the acid whey and condensing it in an evaporator, it is flash-cooled and passed to a cold-wall storage tank of the type having an agitator which sweeps the exposed surface of the cold wall. The whey is thus stored until small crystals of the lactose are formed and the whey acquires a smooth texture in which the lactose crystals are invisible to the naked eye, and thereafter the conditioned whey is spray dried to form a powder. | ||||||
| 权利要求 | 2. The method of claim 1, in which said spray drying is effected by injecting the conditioned whey at a pressure of about 500 to 10,000 p.s.i.g. into a stream of hot air entering a drying chamber, the temperature of the hot air entering said chamber being about 200* to 600* F. 3. The method of claim 1, in which said spray drying is effected by injecting the conditioned whey at a pressure of about 500 to 10,000 p.s.i.g. into a stream of hot air entering a drying chamber, the temperature of the hot air entering said chamber being about 200* to 600* F., the method comprising also the steps of discharging a first portion of said powder from the drying chamber together with drying air and subjecting said first portion to a cyclone action to separate drying air therefrom, collecting a second portion of said powder dropping from the bottom of said chamber, and mixing said two portions whereby said first portion from the cyclone action absorbs moisture from said second portion. 4. The method of claim 1, in which the whey is pumped through said flash-cooling step at a pressure of about 35 to 60 p.s.i.g. |
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