|
|
|
 |
|
Sampling
Systems For Various Applications |
|
|
M&W
JAWO Handling raw coal sampling system is an integrated part of the control
system available to the power plant operators. The sampling system provides
the operator with the means of executing the extraction and preparation of
representative samples of the coal. The sample size is suitable for making
laboratory analysis.
The
M&W JAWO Handling raw coal sampling system operates in accordance with
approved international standards.
The
results of the laboratory tests performed on the basis of the representative
samples prepared by the sampling system are used for:
-
Calculating the payment due for each batch of coal supplied
-
Adjusting the coal flow to the mills
-
Calculating the amount of by-products from each batch of coal
-
Calculating the emissions from each batch of coal
-
Calculating the blending of various coal batches to obtain maximum output
from the power plant
|
 |
|
|
|
Modular
Sampling System |
|
M&W JAWO Handling has developed a module-built
sampling system, especially for sampling of cement clinkers.
The system consists of a chain bucket
sampler, which is adjusted individually, and of various modules such as
vibrating feeders, crushers, dividers, mills, mixers and blowers for return
of reject material. Apart from this also service platforms are offered.
In addition to the above, the system can be
connected to e.g. a pipe system for delivery of the sample directly to the
laboratory. This sample will typically be approx 0.2 liter with a grain size
of less than 200 micron. |
 |
Modular System For Cement
Clinkers |
|
|
|
|
Cross Belt Sampler (CBS)
The
Cross
Belt Sampler
suits
the
purpose of
taking representative
samples of granular
material
being
conveyed
on
a belt
conveyor.
Representability
of the
sample is
ensured by
taking
a complete
cross section
of the material on the conveyor
belt.
The
Cross Belt Sampler
is
suited
for
granulated material,
and offers
high
flexibility
in place of installation
anywhere
along
the
conveyor
belt.
The
Cross Belt Sampler
principle
is compatible
with
all
internationally
applicable
standards
for sampling.
Basic
Functionality
The cutting
device is
the hollow head of
the
hammer. When
a sample is
taken
the
hammer sweeps one revolution
across the conveyor
whereby
the hammerhead cuts
through
the material
stream
on
the
belt.
The sample is thereby captured
by
the
hollow
hammerhead,
which
in
turn
is
emtied over
the sample
outlet.
The
hammer
is
actuated
by an electric
motor
with
integrated
brake designed
to accelerate
and decelerate the hammer and
return
it to its
parking
position
safely
away from
the material
stream.
|
|
|
|
The Cross Stream Sampler (CSS)
Theory
of Sampling (TOS)-compliant which gives every particle in the stream an
equal probability to be included in the extracted increment (the key to
reliable sampling results).
Enclosed in a cover housing to avoid cross-contamination between
successive increments.
Designed to be scalable, which makes it well suited for sampling from
high-capacity Bulk Material Handling Systems (BMHS).
Well
suited for harsh environments and rough abrasive materials.
Usable
as a secondary/tertiary sampler as part of multi-stage sampling system. |
 |
|
|
The Rotary Tube Divider (RTD)
The
Rotary
Tube
Divider
is
used
for
dividing
samples
of
bulk
materials.
The
main
advantage
of
mechanical
sample
dividers
is
that,
they
extract
a
part
of
the
material
by
a
large
number
of
increments.
If,
less
than
about,
50 increments
are
taken
by
the
sample
divider,
the
accuracy
may
be
substantially
reduced.
A
continuous
automatic
sample
division
ensures,
that
the
divided
sample
is
still
a
representative
sample.
General Description:
The dividing
tube
is
rotated
by
the
drive
unit.
The
material
is
charged
through
the
dividing
tube,
which
passes
respectively
extractor
and
discharge
cone.
The
division
ratio
is
step
less
adjustable.
Depending upon
model
size,
it
is
possible
to
divide
materials
up
to
a
particle
size
of
ø65
mm.
|
 |
 |
|
|
The
Rotary Tube Splitter (RTS)
Offers a uniform
and fully automatic division of material that would otherwise be
laborious if carried out manually.
Variably
adjustable dividing ratio.
Can be used for
mass reduction of virtually any type of material.
Can be used for
“duplicate samples” extraction (A, B, C and D samples).
Is easy to
install and operate.
Designed with
increased accessibility resulting in minimum cleaning time.
Has low
maintenance costs. |
 |
|
|
The Rotary Disc Divider (RDD)
The
Disc
Divider
is
used
for
dividing
samples
of
powder
and
bulk
materials
(even
suitable
for
wet
materials).
The
main
advantage
of
mechanical
sample
dividers
is
that
they
extract
a
part
of the
material
by
a
large
number
of
increments.
If
less
than
about
50 increments
are
taken
by
the
sample
divider,
the
accuracy
may
be
substantially
reduced.
A
continuous
automatic
sample
division
ensures
that
the
divided
sample
is
still
a representative
sample.
General
Description:
The
sample
has
to
be
delivered
on
the
top
cone
of
the
Disc
Divider.
The
sample
will
be
scraped
from
the
upper
disc
to the
lower
disc,
where
it
will
be
scraped
to the
bottom
cone,
where
a
part
will
go
through
the
sample
outlet(s)
and
the
rest
will
fall
through
the
bottom
cone
as
reject.
The
division
ratio
is
step-less
adjustable
between
1:9
and
1:59
– Depending
on
particle
size
and
upon
model
size.
It
is
possible
to
divide
materials
up
to a
particle
size
of
ø65
mm.
|
 |
|
|
Screw Sampler Mixing Tank (SMX)
The
Screw
Sampler
Type
SMX
is
designed
to
create
an
average
sample
from
continuous
extraction
of
dry,
non-sticky
powdered
material
from
a
free
falling
flow
of
materials.
General Description:
The continuously
operating
sampler
is
driven
by
a
geared
motor,
coupled
to
a
transport
screw
crossing
the
flow
of
material.
The
screw
transports
the
extracted
material
to
a
mixing
tank,
where
it
is homogenized
by
mixer
wings
connected
to
the
through
going
screw
conveyor
shaft.
The
sampler
can
be
delivered
with
the
drive
unit
installed
next
to
the
mixing
tank
(Type
SMX-A500R-
M)
or
for
installation
on
the
opposite
side
of
the
chute
(Type
SMX-A500R-S).
|
 |
  |
|
|
The Twin
Roll Crusher (TRC)
Has a solid
design and very reliable performance.
Has low
maintenance costs and low noise level.
Is
adjustable with respect to discharging particle size.
Provides a
unique self-cleaning action.
Is equipped
with two torque switches to prevent damage should a hard object (e.g. a
tool) accidentally be dropped into it. |
 |
|
 |
|
|
Twin Roll Shredder (TRS)
The TRS has
a solid design and very reliable performance.
The TRS has
low maintenance costs and low noise level.
The TRS
provides a unique self-cleaning action.
A sieve
placed underneath the rolls ensure that only ‘small enough’ particles
exit the shredder.
|
 |
|
|
The Vibration Feeder (VF)
It is cost
efficient and has low maintenance costs compared to a traditional
conveyor belt.
Has a
compact design and is well suited when there is space constraints.
Provides
accurate dosing of sample material.
Can be used
in combination with sieving of material (VF-M)
|
 |
|
|
Dosing Conveyor (DoC)
Specifically designed
to transport high volumes of sample material.
Can be engaged in any
of the steps of the sampling process.
The DoC can handle
higher volume of sample material compared to a Vibration Feeder (VF).
The special design of
the DoC reduces spillage. |
 |
|
|
Bucket Belt Elevator (BBE)
Compared to
a conveyor belt the BBE can lift material vertically.
The BBE can
handle large quantities of material.
The special
design of the buckets ensures high stability and reduced risk of
spillage. |
 |
|
|
Sample Magazine (SM)
The SM
consists of multiple buckets.
Thus, a
filled bucket does not immediately need to be manually replaced (interim
storage) with an empty one saving costs and time.
The design
ensures no risk of moisture loss or cross-contamination.
|
 |
|
|
Sample Magazine Long (SM-L)
The SM-L
consists of multiple buckets. Thus, a filled bucket does not immediately
need to be manually replaced with an empty one saving costs and time.
The SM-L
compared to the SM version can be customized with space for additional
buckets to meet any requirements for storage capabilities.
The design
ensures no risk of moisture loss or cross-contamination.
The access door is fitted with a safety switch that deactivates the
turntable and allows safe removal of the buckets. |
 |
|
|
Control Cabinet (CC-C)
Tailor-made
solution that perfectly matches the JAWO equipment and ensures optimal
operation.
M&W has
electrical engineers inhouse that design, construct, wire-up and test
the equipment (FAT) before shipment.
M&Ws
electrical engineers and mechanical engineers performs the supervision,
installation and commissioning locally at site and thereby ensures a
fully operational and optimized solution.. |
 |
|
|
Control Cabinet (CC-S)
Tailor-made
solution that perfectly matches the JAWO equipment and ensures optimal
operation.
M&W has
electrical engineers inhouse that design, construct, wire-up and test
the equipment (FAT) before shipment.
M&Ws
electrical engineers and mechanical engineers performs the supervision,
installation and commissioning locally at site and thereby ensures a
fully operational and optimized solution.
|
 |
|
|
Unburned Carbon Online Analyser for Biomass (UBC-3000)
The unit is
specially designed for measurement of unburned carbon from pure biomass
combusition alternatively in combination with coal firing
The UBC-3000
is the first UBC measurement and monitoring device developed
specifically for biomass of its kind in the world.
The UBC-3000
provides automatic and continuous online information about UBC levels
for combustion efficiency, coal mill performance, classifier assemblies
and the quality of the fly-ash in changing conditions.
It has a
short response time due to placement close to the combustion zone, which
allows the information to be used directly in the boiler control.
The
microwave measurement principle provides accurate information about the
UBC levels in ash.
By providing
physical fly ash samples, at request, the samples can be analyzed in a
laboratory as well. This allows for additional information regarding the
combustion process, which can be used to further optimize the efficiency
of the power plant.
The UBC-3000
is also available for installation in the hopper using a different
extraction mechanism.
The double
reference chamber and thermal conditioning allows for the device to be
used in conditions all around the world, yielding accurate results at
changing temperatures. |
 |
|
|
Particle Sampler (PS)
·
The PS
performs fully automatic sampling of powder or dust particles.
·
The
unit can be easily operated from the man-machine interface or from a
central control room.
·
In
the case of analysing fly-ash samples for levels of UBC (unburnt
carbon), the operator may use the information from the PS to optimise
the combustion process with respect to fly-ash quality.
|
 |
|
|
AUTOMATIC COAL FLOW MONITOR |
|
|
|
The
patented ACFM-2200 is a fully automatic on-line
sampling and monitoring unit.
It provides real time data for better
combustion performance and fuel economy.
The technology is based
on ISO 9931 isokinetic and representative extraction of samples in fuel
pipes between the mills and burners.
Samples taken are
returned into the fuel pipe or at preset times collected in exchangable
containers as per requirement.
The flow measuring
results are electronically transmitted to the control room monitors.
|
|
|
|
AUTOMATIC DUST SAMPLER |
|
|
|
The
ADS is an instrument for extracting samples of ash in flue gas.
The ADS operates automatically during all operating
conditions and continuously provides samples for evaluation of the boiler
efficiency.
Principal and process features:
-
Continuous sampling
-
Durable, non-mechanic sampling device
-
Minimum of maintenance and supervision required
-
Easy to install and simple to use
- All
vital parts are manufactured from stainless steel
|
|
|
|
AUTOMATIC TRIMMING DAMPER |
|
|
|
The
ATD is an electric driven valve trimming the flow of coal in the fuel pipes
from the mills to the burners.
The ATD is flanged into the fuel pipe.
On receipt of an electric signal the damper
will operate in the direction of openning or closing.
The opening/closing
flaps are made from special wear resistant material.
The signal to operate
the trimming damper can be generated "manually" from a push button or
automatically from a communication box translating actual flow measurements
from the flow monitor into signals for the ATD for the purpose of balancing
the flow in all feeder pipes.
|
|
|
|
FLY ASH SAMPLER |
|
|
|
The
FAS is an automatic sampling device, used for collecting dust samples in
transport pipes, where the ash is conveyed pneumatically.
The
fly-ash sampler can be installed directly in the transport pipe or in the
pneumatic transport hopper.
- The
FAS is a very reliable and low maintenance instrument, with a sampling
device manufactured from stainless steel
-
The
FAS is automatically collecting samples at pre-set intervals
-
The
samples are accumulated in an exchangeable container
|
|
|
|
PULVERIZED FUEL SAMPLER |
|
|
|
The Pulverized
Fuel Sampler (PFS)
is a portable instrument designed for sampling and flow measuring of
pulverized coal in the fuel pipes between mills and burners. The Pulverized
Fuel Sampler
complies with the ISO 9931 standard for sampling of coal
conveyed by gases.
The
Pulverized Fuel Sampler is introduced into the fuel pipe through an airlock
(Dustless Connection), and the coal sample is collected in an exchangable
container attached to the sampler.
Application areas:
-
Extracting of isokinetic and representative samples for determining of
particle size of coal and other parameters.
-
Routine and special measurements of coal flow in fuel pipes.
|
|
|
|
PULVERIZED FUEL
SAMPLER - AUTOMATIC |
|
|
|
The
PFS-A is a portable instrument designed for
sampling and flow measuring of pulverized coal in the fuel pipes between
mills and burners, according to ISO 9931.
The
sampler is introduced into the fuel pipe through an airlock (Dustless
Connection), and the coal sample is collected in an exchangable container
attached to the sampler. The sampling probe is connected to an
electric motor which enables it to rotate. A PLC in the control box ensures
isokinetic extraction, and calculates the coal flow in the pipe.
The PFS-A is operated by only one person.
Application areas:
-
Extracting isokinetic and representative samples for determining of
particle size of coal and other parameters.
-
Routine and special measurements of coal flow in fuel pipes.
|
|
|
|
RESIDUAL CARBON ANALYSER |
|
|
|
The
RCA 2000 is an on-line analyser for carbon content in ash or LOI. The
instrument provides the operator with vital real time information about the
combustion efficiency through continuous monitoring of the unburned carbon
content in the fly-ash.
The
technology is based on extracting samples of fly-ash in flue gas ducts. The
samples are returned into the flue gas duct or can at preset times be
collected in exchangable containers as per requirements.
The
RCA 2000 is a very reliable instrument with low maintenance requirements. It
reduces to a great extent the need of performing the labour intensive
laboratory analysis.
The RCA 2000 will assist
the operator in improving the operation in the following areas:
-
Combustion efficiency
-
Emission reduction
-
Coal mill performance
-
Production of high quality fly-ash for sale
|
|