FIELD: production and cooling of titanium dioxide.
SUBSTANCE: gaseous titanium tetrachloride and oxygen are brought into react at high temperature. Titanium dioxide and gaseous reaction products are cooled by passing through tube-type heat exchanger together with cleaning agent to remove depositions from inner walls. Inner walls of heat exchanger contain spiral blades arranged over at least part of heat exchange surface.
EFFECT: deposition removing with, as well as titanium dioxide and gaseous product cooling with increased effectiveness.
13 cl, 2 dwg
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