| 摘要 |
<p>The procedure for the production of whey permeat powder, comprises obtaining a whey permeat by ultrafiltration (1), and extracting the so obtained whey permeat by a diaphragm separation process or an electrodialysis and/or an evaporation procedure of water. The concentration of the received retentate is increased by evaporation on approximately 60% dry weight, the concentration in a further step is increased to 70-85% dry weight, and the concentrate in a spray drier (8) is dried. The procedure for the production of whey permeat powder, comprises obtaining a whey permeat by ultrafiltration (1), and extracting the so obtained whey permeat by a diaphragm separation process or an electrodialysis and/or an evaporation procedure of water. The concentration of the received retentate is increased by evaporation on approximately 60% dry weight, the concentration in a further step is increased to 70-85% dry weight, and the concentrate in a spray drier (8) is dried. The concentrate is mechanically separated according to the evaporation in a decanter into a crystalline concentrate with 85-95% dry weight and into a liquid phase with 30-40% dry weight, that the concentration of the liquid phase is increased by evaporation on 50-60% dry weight, that a part of the highly concentrated liquid phase is added to the crystalline concentrate with the continuously accomplished production process, so that the received mixture consists of a concentration of 70-85% dry weight, and that this mixture in the spray drier is dried. Such a part of the liquid phase is added to the crystalline concentrate, that the ash content of the permeat powder received by spray drying of the mixture is 3-15%.</p> |
