Combustion Control
Fundamental for power generation is a proper control of the
combustion process. Control must be based on representative
monitoring of O2 and CO content in flue gas. Conventional O2
monitoring near to economiser is not sufficient for effective
control of individual burners.
Only a simultaneous O2 and CO monitoring can provide
representative information for combustion
control. TDL based optical instruments are
optimal for multiple burners monitoring.
Advanced Boiler Plant Process Control
Air and coal powder mass flow in boiler duct differ
significantly. Monitoring of primary, secondary and tercialy air
flow together with unburned content in ash allows an overall
process optimation. ECM is offering also expertize to assess
and optimise the combustion process.
Thermography
Thermographic camera systems allow monitoring of proper operation
of individual burners and prevent damaging of boiler membrane by
overheating. Number of camera systems depends on burner
configuration.
DENOX Monitoring
Ammonia slip should be monitored downstream the location
where the chemical reaction ends. For these locations high
temperatures and ash concentrations are characteristic.
Common problem of DENOX systems are plugging caused by
ammonium bisulphate (AbS) condensing on air heaters cold
end surfaces and causing a high pressure drop and corrosion.
Continuous monitoring of AbS and acid dew point allows to
increase boiler efficiency and prevent unscheduled plant shut
downs.
Riadenie spaľovania
Continuous Emission Monitoring (CEMS)
European legislation requires continuous monitoring of
emissions. These are usually SO2, NOX, CO, CO2, O2, particle
and flow.
Monitoring can be extended to HCl, HF, NH3, TOC, and
mercury compounds. The devices must meet the QAL1
certification conditions.
CEMS data systems must be reliable, secure and fulfill all the
regulatory requirements.
Thermal Conductivity Based Flow Meters
QAL 1 certified mass flowmeters are an ideal solution for
monitoring of wet and dirty gases including those with water
droplets or abrasive media with high solid content. Probe for
larger duct diameters can be equipped with several sensors.
Even low flowing gas streams can be monitored with high
accuracy.
Desulphurisation Monitoring
On FGD inlet SO2 mass flow and particle concentration is
monitored. On outlet CEMS installation is required. Since most
of FGD units include a wet scrubber, for particle monitoring
a heated bypass particle monitor has to be used. Water
content in the flue gas is evaporated before optical analysis of
the dust content is performed.
Boiler Water
Most demanded boiler water monitoring parameters are
conductivity, hardness, silica, phosphates, sodium and
hydrocarbons. Particle monitoring is identifying filtration
problem and can indicate corrosion. Boiler water monitoring
systems consist from cooling, pressure reduction and from the
actual analytical part.
Monitoring of Filtration Systems
Baghouse monitoring systems allow easy identification of
defective sleeve. This monitoring helps effective maintenance
planning and significantly prolongs sleeve life expectancy.
Tribo sensors on the baghouse outlet are matching cleaning
cycles to instant dust concentration for indication of failing filter
units.
Cooling Towers
Warm water in cooling towers is ideal environment for growth
of Legionella bacteria. Bacteria can be identified by bio layer
sensors stimulating internal bacteria growth. Output of the
sensor is proportional to probability of bacteria growth on
cooling tower surfaces. Information can be used for activation
of disinfection.
AllScan Coal Analyzers
AIIScan monitoring systems installed above coal
transportation belts allow to monitor simultaneously moisture,
ash, calorific value, sulphur, volatiles and other elements in
transported coal. This analysis allows optimation of
combustion process for respective coal conditions.
Clamp - on flowmeters
Flexim clamp-on instruments are a smart solution for a broad
range of applications, like flow of steam, compressed air,
natural gas and transfer.
Flame Monitors
Flame scanners using UV, VIS, IR spectral ranges allow safe
operation of burner systems. Using of flame scanners is
a safety issue for operation of boiler systems.
Ignitors and Pilot Burners
Ignitors and pilot burners allow to start and maintain the
combustion process. Design of ignitors is optimised for
respective fuel.
Portable Flue Gas Analyzers
Purpose of these instruments is flue gas testing and proper
setting of boiler systems. Rugged instruments designed for
harsh industrial environment allowing remote communication.
