| |
1.
Open recirculaing cooling
water system |
|
Application
|
Benefit
|
Product
|
A.
Chemical
Flushing
Agent
|
This
product is used
to remove various
contaminants
in newly setup
plants and sticking
materials in
being operated
plants. Based
on its superior
penetration
and swelling
power, it can
rapidly remove
inorganic and
organic components.
In addition,
because it contains
corrosion inhibitor
and dispersant,
it can promote
the efficiency
of the following
initial treatment
chemicals. |
W-210
|
B.
Initial
treatment
chemical
|
These
products are
used in pre-filming
treatment to
form a dense
and strong anticorrosion
film before
enforcing the
maintenance
of cooling water. |
W-211,212
W-213,214
|
C.
Maintenance
treatment
chemical
|
These
products are
for maintenance
purposes. This
means use them
to keep and
supplement the
initial film
formed in the
above initial
treatment One
method from
alkaline treatment,
semi-alkaline
treatment and
rich phosphate
treatment should
be chosen depends
on the treatment
conditions of
cooling water
and the projected
program. The
products are
suitable for
open recirculating
cooling water
systems where
recirculating
water surpasses
500§©/hr. |
W-220
series
W-230
series
W-240
series
W-250
series |
|
|
These
products are
used to prevent
microbial-induced
sliming troubles
during cooling
water operation.
Various kinds
of chemicals
can be used
depending on
practical field
conditions. |
W-260
series
W-2600series |
|
E.
Cleaning
agent
|
The
scales produced
in cooling water
operation can
be divided into
3 types, i.e.,
inorganic, organic
(mainly slime),
and complex
(inorganic +
organic) one.
These products
should be properly
chosen according
to the different
scale properties.Cleaning
sequences: analyze
the scales from
cleaning objects
and select chemicals
¡æ check line
for cleaning
objects and
set up cleaning
program (including
waste water
treatment)¡æ
run the cleaning
¡æ cleaning
post-treatment
(neutralization
for anticorrosion,
waste liquid
treatment) |
W-500
series
W-5100series
W-5600 series |
|
|
| 2.
Closed recirculaing cooling
water system |
|
Application
|
Benefit
|
Product
|
|
F.
Closed cooling
water system
chemical
|
Closed
cooling water
system, it also
proceeds from
the initial
treatment to
the maintenance
process, however,
the difference
to open recirculation
system is that
it uses the
same chemical
for the two
processes. The
chemicals should
be selected
considering
conditions such
as water temperature,
concentration,
and the quality
of steel. |
W-271
series W-264
|
|
|
| 3.
Air conditioning system |
|
Application
|
Benefit
|
Product
|
G.
Multifunctional
water treatment
agent for
middle scale
system
|
These
products are
suitable for
middle-scale
systems with
recirculation
capacity in
100-500§©/hr.
They multifunctional
water treatment
chemicals including
slime treatment
effects. |
W-281
W-282
W-283
|
H.
Multifunctional
water treatment
agent for
small scale
system
|
The
product is used
for small scale
system with
recirculation
capacity under
100§©/hr. |
W-286
|
|
I.
Al-in-one
liquid type
water treatment
agent
|
These
products are
suitable for
small and middle
scale open recirculation
systems. They
are multifuctional
treatment agents
that prevents
corrosion, scaling
and sliming
troubles. |
W-2810
series |
|
|
| 4.
Others |
|
Application
|
Benefit
|
Product
|
|
J.
Corrosion
inhibitor
for spot-welder
systems
|
Spot-welder
systems refer
to cooling water
systems for
plants such
as automobile
assembling where
welding processes
are very frequent.
The pipelines
of these systems
are thin, so
they need careful
maintenance. |
W-291
|
|
| |
|
