POWER May 2012 - 103

EUROPE SPECIAL ADVERTISING SECTION
Borosilicate lining protects chimneys from corrosion
Coal, oil and lignite firing gives chimneys a tough time, but Pennguard lining technology
from Hadek offers reliable performance for 20 years or more
The Pennguard Block Lining System forms an impermeable, acidresistant
barrier inside chimney flues. The lining is based on closedcell
borosilicate glass technology. Lightweight borosilicate glass
blocks manufactured under highly controlled conditions are attached
to the internal steel, concrete or brickwork surface of power plant
chimneys using a durable, flexible adhesive. The Pennguard Block
Lining System is used in new chimneys and is also frequently retrofitted
to existing chimneys.
A properly installed Pennguard lining offers a service life of well
The acid-resistant Pennguard lining is applied to the inside surface
of the existing brick liner
H
adek Protective Systems is a specialist in the internal protection
of power station chimneys and flue gas ducts. Coal, oil and lignite
firing power stations need chimneys that will operate under lowtemperature,
corrosive and sometimes variable conditions. In spite
of their severe operating environment, these chimneys are expected
to perform reliably for many years, with minimum downtime. The
Pennguard Block Lining System offered by Hadek can take it all.
over 20 years. Just as importantly, it requires virtually no maintenance.
Any small repairs or alterations can be performed quickly, with
minimum preparation and equipment. In addition to the Pennguard
lining system itself, Hadek provides a range of services, including feasibility
studies, engineering, on-site quality assurance and long-term
guarantees and performance monitoring.
The Pennguard Block Lining System has been installed all over the
world. Ongoing projects include:
* 3 x 626 MW lignite-fired Hongsa Power Station, Laos: one 250 m
concrete chimney with three steel flues will be Pennguard lined
during 2013;
* 1 x 1,300 MW coal-fired W.H. Zimmer Generating Station, Ohio, USA:
one 174 m concrete chimney with one free standing brick flue will
be Pennguard lined during spring 2012;
* 6 x 800 MW coal-fired Kusile Power Station, South Africa: two
220 m concrete chimneys, each with three steel flues, will be
Pennguard lined during 2012/2013.
Dedicated fill-level measurement for coal mills
SmartFill is a fail-safe, high-precision, fill-level and temperature measurement system
for coal mills that helps ensure uniform grinding and optimum combustion properties
K
IMA specializes in high-performance
analog and digital closed-loop controls,
innovative sensor systems and databases
for the coal, minerals, cement and chemical
industries. The company's central aim
is to optimize industrial processes towards
greater efficiency, higher productivity and
less environmental pollution.
To help achieve these targets in power
plants KIMA has adapted its technologies for
use in coal mills. In contrast to the traditional
methods of measuring fill level in ball mills,
KIMA's SmartFill is the only system which
takes all the necessary information directly
from its source: on the mill shell.
Classical methods such as microphones
and base- or bearing-mounted sensors struggle
with problems such as interference from
noise created by other mills and machinery,
ambiguities in locating the sources of sound,
and dust. None of these problems affect the
SmartFill solution. By providing plants with
previously unavailable information, SmartFill
thus brings many advantages. These include:
* interference-free measurement - no influence
from other mills or machines nearby;
May 2012 | POWER
Attaching directly to the coal mill, the
SmartFill level measurement system does
not suffer from acoustic interference
* significantly enhanced precision of
measurement;
* reliable and precise measurement of the
fill level;
* independent measurements are possible
on both sides of the mill, or in two
chambers;
* better level measurement allows the mill
to operate with greater stability, with consequent
higher throughput, less wear and
more consistent particle size; and
www.powermag.com
* self-powered system with integrated generator
means that it is not necessary to
stop the mill to change batteries.
SmartFill has been used successfully in many
different types of ball mills in the cement and
mining industries. Within the last seven years
the system has been successfully sold and
installed in more than 450 applications.
KIMA also provides the next logical step
towards process optimization: the MillMaster
predictive control system for grinding processes.
Working unattended, MillMaster
controls grinding circuits in fully automatic
mode. A single MillMaster system keeps
up to six mills operating with optimum
performance. As well as improving grinding
performance, the system also increases plant
availability thanks to its ability to protect
against overfilling and similar malfunctions.
Keeping the fill level at a constant optimum
level makes for a more homogenous
product, which improves the combustion
properties of the coal. This, in turn, leads to
a reduction in unburnt carbon and, consequently,
better energy efficiency.
www.kimae.de
103
www.hadek.com
http://www.hadek.com http://www.kimae.de http://www.powermag.com
POWER May 2012

Table of Contents for the Digital Edition of POWER May 2012
