Method for the programme control of the crystallization in a vacuum vessel.

摘要

In the field of automatic boiling in a pan in which the consistency of massecuite is controlled in accordance with a program, intermittent boiling is employed as an effective way of improving boiling time and the quality of boiled products by supplying an appropriate amount of water or a solution into the pan to loosen the consistency each time it has reached a set value. This invention provides a novel concept in connection with the procedure for establishing the programed value of consistency. The concept includes two curves defining the upper and lower limits, respectively, of an allowable range of consistency within which the consistency of massecuite is maintained, whereby the product of high quality is obtained safely within a minimum of time.