When
temperature in duct or dust collector drops
below water vapour dew point, vapour condenses
into water. Water formation causes acidic
attack on metal and material agglomeration
in duct. Industrial systems from lime kiln
to aluminium smelter attempt to prevent temperature
drop by thermal insulation. DAV insulates
it duct and dust collector with rockwool.
Insulation specification ranging from 50kg/m3
to 120kg/m3 density of rockwool and 2’’
to 4’’ insulation thickness, depending
on service temperature. Insulated duct is
clad with 0.7mm thin aluminium sheet. |
