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صنایع غذایی::
پروپیلن گلیکول
At this particular case the plant had a batch reactor that was used to make propylene glycol monoester by reacting fully hydrogenated fat and
propylene glycol.
The reaction was carried out under pressure in order to prevent any loss of propylene glycol at the reaction temperature of 375-425°F (190.6-218.3°C).
There was a sudden surge of propylene glycol vapor rushing into the distillate condenser.
The cooling capacity was designed assuming that the propylene glycol vapor would be released at a steady rate matching the total distillation time, which was normally 90 min.
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