Roxul Industrial Insulation Process - Manual (Page 56)

Insulation of c
olumns
1. System solutions
1.4 Insulation of columns
Columns are pillar-shaped vessels, which are
mainly used in the (petro) chemical industry for
distillation or the extraction of substances. They
often form the key elements in chemical or
petrochemical plants. The processes in columns
often only operate at certain temperatures. The
insulation of columns plays an important role in
their functionality.
Reduces heat loss
Aids protection against contact by minimizing
the surface temperature
Reduces the cooling of the stored substance, so
it remains fluid and does not set
Ensures the column remains at the necessary
process temperatures
Prevents heating of the stored substance (for
example, through solar radiation)
The columns used in the different industrial
processes are so varied that the examples of use
below cannot fully take into account the particular
circumstances of the construction-related factors.
Determine whether the products and construction
described are suitable for the corresponding
application in each individual case. If any doubt,
consult the ROXUL
® Technical Services Team.
The applicable standards and regulations must be
observed. A few examples follow:
ASTM C1696 "Standard Guide for Industrial
Insulation Systems"
NACE SP0198 (Control of corrosion under
thermal insulation and fireproofing materials -
a system approach)
ASME "Boiler and Pressure Vessel Code"
MICA "National Commercial & Industrial
Insulation Standards"
DIN 4140 (Insulation works on industrial plants
and building services installations)
AGI Q101 (Insulation works on power plant
components)
CINI-Manual: “Insulation in industry”
BS 5970 (Code of practice for thermal insulation
of pipe work, equipment and other industrial
installations)
PIP (Process Industry Practices)
Note
Before starting the insulation works,
ensure that all preparatory work on the object
has been completed. Refer to Chapter 1.1 for
details.
Insulation systems for columns
An insulation system for vessels and columns
generally comprises the following components:
Insulation
Support construction and a spacer
Water vapor retarder in the case of cold
insulation systems
Cladding
The temperature of the columns, in particular, has
a significant impact on the optimal insulation system.
This chapter focuses on the insulation of
hot columns .
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