Chilling process

Figure 32.1 Basic flow diagram for liquid chilling process plant...

The temperature of the chilled process stream is controlled by adjusting the setpoint of the evaporator level controller (the heat transfer area is varied to change the heat transfer rate). 

The chilling process usually requires several minutes and the evaporating hydrogen must generally be considered as a loss. It is disposed of into the environment via a... 

Spray chilled or powdered fats are specialized products developed for ease of incorporation, handling, melting efficiency, uniform delivery with addition systems, encapsulation, and other special-purpose uses. The spray chilling process consists of atomizing a molten fat in a crystallization zone or tower, maintained under temperature conditions where a very fine mist of the melted fat is contacted with cooled air or gas to cause crystallization without marked supercooling (106). 

A significant advance in solvent dewaxing was announced by ExxonMobil16-18 in 1972 in the form of the DILCHILL (DILution CHILLing) process, which improves the crystallization step by producing large, dense, spherical crystals ... 

The solvent dewaxing process involves addition of solvent during the chilling of the waxy feed. The chilling process induces crystallization of the wax and the solvent is added to maintain the fluidity. The wax crystals are filtered by rotating drum filters, resulting in a lube oil filtrate and a slack wax with entrained solvent and oil. In both fractions, the solvent is recovered by successive vaporization and distillation. 

Probiotics are highly resistant to the spray chilling process... 

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