•
The top pictures show the existing soot blower. One can clearly see the damaged
caused by the conventional roller support
•
introducing a great deal of friction loss during travelling of the lance.
High operational and maintenance costs.
•
Advantages of Seelen’s axial roller support
•
The pictures show a clean and smooth lance surface as a result of the cleaning
effect of the Seelen’s brush seal.
•
Effortless rotating and axial movement of the lance
•
No damage to the lance surface as usually caused by conventional supports
•
Long lasting blower lance and other components
•
Low operation and maintenance costs, so cost effective
Picture
01b;
a
view
of
the
soot
blower
lance.
One
can
see
thatafter
approx.
eight
months
of
operation
the
lance
still
looks
likenew.
No
damage to the lance surface.
Picture 01a; a close-up of the Seelen’s axial roller
support, approximately eight months after
commissioning
Picture
01-b;
a
close-up
of
excessive
wear
on
the
lance causedby the conventional roller support.
Picture
01-a;
a
close-up
of
the
conventional
roller
support.
After
CASE 02 – SEELEN’S AXIAL ROLLER SUPPORT
This
case
relates
to
a
coal
fired
steam
boiler
in
a
power
plant
in
Europe.
The
boiler
operates
with
negative
pressure
at
the
flue
gas
side.
Furthermore,
the
boiler
is
equipped
with
eight
(8)
long
retractable
soot
blowers.
Due
to
operation
problems
caused
by
air
influx;
damaged
lance
surface
by
conventional
supports,
frequently
failure
of
the
soot
blowers
and
high
operation
and
maintenance
costs
the
management
has
awarded
a
pilot
project
(Case
01)
to
Ingenieurbüro
J.
Seelen
GmbH
which
comprises
the
supply
and
erection
of
Seelen’s
negative
wall
box
with
brush
seal
as
a
trail
to
mitigate
air
influx
during
normal
operation
and
flue
gas/ash
efflux
in
case
of
overpressure
buildup
in
the
boiler
which
happens
occasionally
during
a
breakdown.
When
such
situation
presents,
the
whole
surrounding
ends
up covered by ash creating an unsafe environment for the personnel.
Based
on
the
results
achieved,
Ingenieurbüro
J.
Seelen
GmbH
has
been
awarded
a
contract
to
replace
all
the
soot
blowers
in
question.
All
the
soot
blowers
have
been
replaced
by
Seelen’s
blowers.
The
execution and commissioning took place according to the agreement to the satisfaction of the employer.
The
pictures
below
show
the
situation
respectively
before
and
approximately
eight
months
after
the
replacement of soot blowers.
system.
Before
Picture
01
-
d,
a
view
of
Seelen’s
negative
wall
box
with
brush
seal
from
a
different
angle.
The
lance is partly cleaned
Picture
01
–
c;
a
close-up
of
a
Seelen’s
negative
wall
box with brush seal.
Picture
01
–
b;
a
view
of
the
existing
wall
box
from a different angle.
Picture
01-
a;
a
close-up
of
the
existing
wall
box.
One
can notice the huge gap between the lance and bore.
After
CASE 01 – SEELEN’S NEGATIVE WALL BOX WITH BRUSH SEAL
This
case
relates
to
a
coal
fired
steam
boiler
in
a
power
plant
in
Europe.
The
boiler
operates
with
negative
pressure
at
the
flue
gas
side.
Furthermore,
the
boiler
is
equipped
with
eight
(8)
long
retractable
soot
blowers.
Due
to
operation
problems
caused
by
air
influx;
frequently
failure
of
the
soot
blowers
and
high operation and maintenance costs the management has awarded a pilot project to Ingenieurbüro
J.
Seelen
GmbH
which
comprises
the
supply
and
erection
of
Seelen’s
negative
wall
box
with
brush
seal
as
a
trail
to
mitigate
air
influx
during
normaloperation
and
flue
gas/ash
efflux
in
case
of
overpressure
buildup
in
the
boiler,
which
happens
occasionally
during
a
breakdown.
When
suchsituation
presents,
the
whole surrounding ends up covered by ash creating an unsafe environment for the personnel.
During
commissioning
of
the
modification
the
lance
has
been
forwarded
for
about
1.5
metre
and
then
moved
backwards
to
show
the
effect
ofthe
brush
seal
which
could
be
clearly
seen
in
the
pictures
01-
c
thru
e.
Besides
keeping
air
outside
the
boiler
the
brush
seal
removes
foreign
material
from
the
lance
maintaining the surface clean and smooth.
Based
on
the
results
achieved,
Ingenieurbüro
J.
Seelen
GmbH
has
been
awarded
a
contract
to
replace
all
the soot blowers in question.
The
pictures
below
show
the
situation
respectively
before
and
after
retrofitting
of
the
soot
blowing
system.
Before
Lance Screw Blower SEELEN SLB 82E
Cleaning medium: Steam, air
Most frequent applications: Superheater, reheater
Travel: 0.4 m - 8 m
Cleaning angle: 360 ° (option: pendulum drive with smaller blowing angle)
Industries: Power plant industry, waste incineration plants, biomass, other industrial processes
Rotary tube blower SD 79E
Cleaning medium: Steam, air
Most common applications: Reheater, Economiser, Fired convection section
Travel: / rotation only
Cleaning angle: 30° - 360
Industries: Waste incineration, biomass, marine, oil and gas, other industrial processes
Traverse blower SB-AT 84E
Cleaning medium: steam, air
Most common applications: Economisers, air preheaters, flue gas coolers/preheaters, SCR systems.
Travel: 0.4 m - 5 m
Industries: Power plant industry, waste incineration plants, biomass, oil and gas industry,
other industrial processes
Wall blower SV 01E
Cleaning medium: steam, air
Most frequent application: combustion chamber
Travel: approx. 0.4 m (adapted to wall thickness)
Cleaning angle: 360 °
Industries: Power plant industry, waste incineration plants, biomass, other industrial processes.
Feed blower SDV 79E
Cleaning medium: steam, air
Most common applications: Reheater, Economiser, Fired convection section
Travel: 0.1 m - 0.8 m
Cleaning angle: 360 °
Industries: Waste incineration, biomass, oil and gas, other industrial processes
J. Seelen GmbH
Maulbeerkamp 5
D-46509 Xanten
