NEUTRALIZATION (SO-4)

The sulphates from the reaction of ethoxilated alcohols or of fatty alcohols with SO₃ have to be neutralised quickly.

The neutralisation takes place continuously in a closed loop where active matter and the neutralising agent (caustic soda, trietanol amina, or others) are fed by a special metering pump and are recycled through a homogenising mill.

A heat exchanger removes the neutralisation heat and a pH-controller ensures the correct pH of the final product through andjustment on the caustic soda metering pump.