air quality control systems reducing emission and … · retrofit example is an absorber tray...
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AIR QUALITY CONTROL SYSTEMS
Reducing Emission and Creating Value
A one-stop-shop in environmental technologies
MHPS, with self-developed Air Quality Control Systems
(AQCS), is a world leader in energy-related environmental
systems enabling us to face global climate change challenges
from commercial and technological standpoints.
While our steam power plants and industrial boilers answer customer
demands with ultra-high performance levels, our AQCS technologies
– particularly NOx reduction systems (SCR), and Flue Gas Desulfuriza-
tion (FGD) systems – purify the flue gases. Our intellectual property
and know-how lends new-found quality and security to vital indus-
tries, making thermal plants compatible with latest environmental
requirements.
We are the OEM for Nitrogen Oxide Reduction (DeNOx) technology
with extensive experience in the field of direct and indirect
reagent injection for economically optimized and highly efficient
solutions. Our advanced Triple Action Catalyst TRAC® is a superior
technology for mercury removal. Thanks to our wide knowledge and
experience in the field of desulphurization, we provide customized
solutions in new builds, retrofits and upgrades of FGD plants. A
retrofit example is an absorber tray reduction of the SOx emissions
to meet BREF (Best Available Techniques Reference) requirements.
We also employ highly efficient dedusting technologies within our
environmental products portfolio.
NOx REDUCTION TECHNOLOGY
■ Selective Catalytic Reduction (SCR)
System
■ SCR Catalyst
■ Mercury Oxidation Catalyst (TRAC®)
SO2 REDUCTION TECHNOLOGY
■ Wet Limestone-Gypsum Flue Gas
Desulfurization (FGD)
■ Sea Water FGD
DUST REDUCTION TECHNOLOGY
■ Electrostatic Precipitator (ESP)
■ Fabric Filter
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1 SCR (Selective Cata-lytic Reduction System)
2 ESP (Electrostatic Precipitator)
3 FGD (Flue Gas Des-ulfurization)
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From industrial boilers to utility power plants
Whether looking at new builds, upgrades or retrofits of flue
gas cleaning systems, MHPS is the key to cost-efficient
highest -quality solutions. Our specialists review the entire
system from burner to stack and develop the most efficient
and economic flue gas processing facilities that mostly
include firing optimization (primary) and active cleaning
(secondary).
In retrofitting and upgrading existing plants, our specialists initially
look closely into the technology on hand to analyze the entire
system, its individual components and the process chain including
fuel, combustion and flue gas cleaning. Simultaneously, our
in-house EPC team ensures rapid project handling and adherence
to the specified emission standards during operation. This compre-
hensive analysis is conducted for new builds as well. What
distinguishes MHPS is the dedication to quality and customer satis-
faction before delivery of the tailor-made air quality products and
post-commissioning service.
This comprehensive assessment is also used in the construction of
new flue gas cleaning systems – from indusrial boilers to utility
power plants. In this way, we provide our customers with tailored
solutions. The components designed by MHPS Europe and parent
MHPS, Ltd., meet the highest efficiency, availability and service-life
requirements.
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Meeting the new emission limits
MHPS is currently constructing a lignite-fired power
plant which will meet the latest stringent BREF emission
limits, thanks to additional customized measures
undertaken during the execution phase.
NOx EMISSION FROM 200 mg/Nm³ → 85 mg/Nm³
■ SCR reactor incl. MHPS catalyst
MERCURY EMISSION → 4 μg/Nm³
■ SCR with TRAC® (TRiple Action Catalyst) catalyst and
ammonia chloride injection (storage, preparation station
included)
■ ORP (Oxidation Reduction Potential) – Control in FGD
(avoid Mercury Re-Emission)
■ Upgrade of FGD Waste Water system to cover increased
mercury discharge of FGD
■ Injection of activated carbon upstream ESP as back-up
■ Injection of additives like TMT 15 into FGD as back-up
DUST EMISSION FROM 10 MG/NM³ → 5 MG/NM³
■ ESP upgrade by additional field
■ Final reduction of dust emission in FGD
SO2 EMISSION FROM 150 mg/Nm³ → 75 mg/Nm³
■ Change of recirculation pump size, absorber sump size,
drain tank
■ Adjustment of operation (L / G)
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Service for AQCS
Frequently revised environmental goals are leading to new
operational parameters and a permanent need for higher
efficiency levels require existing equipment to be revamped,
retrofitted and / or replaced.
MHPS, as a unique OEM and technology owner, is fully aware of
the requirements placed on not only function but also fail-safety of
components. Comprehensive service and maintenance concepts
have been devised for various system parts, subassemblies and
components in Flue Gas Desulfurization systems.
OUR WORK & SERVICES
ON-SITE SERVICE
■ Servicing inspection / maintenance / repairs
■ Site logistics, standstill management
■ Site management, erection and startup
OPTIMIZATION
■ Refurbishing / revamping / modification and extension
■ Studies, process and detail engineering
■ Capacity adjustment, capacity and flow optimization
■ Spare parts management and procurement
DENOX (SCR / SNCR)
■ Catalysts (SCR) – Cleaning and replacement, retrofitting the CAT
standby level
■ NH3 Station – Maintenance and service
■ Retrofitting TRAC® catalysts for mercury capture
■ Injecting system (SCR and SNCR) – Maintenance and service
■ Variation / adaption of injecting point / quantity and reduction
agents (SCR and SNCR)
DUST EXTRACTION
■ Electrostatic precipitators
■ Fabric filters
■ Converting electrostatic precipitators into fabric filters
■ Cyclones
■ Scrubbers
■ Attemperators
■ Adsorption and additive systems
■ Fly ash and dust extracting components
■ Fans
DESULFURIZATION
■ Inspection and maintenance of the wet FGD
system and attendant components
■ System optimization
■ Modification and extension
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SERVICE EXAMPLE: WET FGD
In operating and maintaining FGD absorbers and their service
equipment, inspections, maintenance and servicing are
needed for fail-safe component running without stoppages
over the envisaged ever-longer operating intervals.
Our wet FGD service currently includes around 4,500 items for all
inspection, maintenance and servicing work on an integrated wet
FGD plant including the associated balance-of-plant.
The service concept starts with the preparatory site installation and
job safety work. It then reviews and evaluates operating records and
ends with the detailed handling steps for maintenance and servicing
of the components based on the manufacturer’s documentation
stipulations and the times specified therein. Modification and opti-
mization steps may also be necessary to adhere to more exacting
standards and optimize efficiency and / or energy.
SERVICE EXAMPLE: ELECTROSTATIC PRECIPITATORS
As part of plant overhauls we undertake all work on electro-
static pre cipitators – whether dry or wet cleaning – of any
design and from any manufacturer. This includes:
■ Inspection, maintenance and repairs of the housing,
fitted / ancillary components and the ceilings (seal tightness test)
■ Inspections and repairs on trace heaters and insulation
■ Work on the rapping equipment
(changing hammers, anvils, shafts and bearings etc.)
■ Changing the insulators
■ Replacing the interior equipment, such as discharge and collect-
ing electrodes
■ Inspection, maintenance and repair of dust conveying equipment
■ Inspection, maintenance and repair of electrical high, medium
and low-voltage equipment and electric drives
SCR1,027 Units (13 Countries)
ESP 3,261 Units (32 Countries)
FGD 323 Units (24 Countries)
COAL POWER PLANT
Westfalen, Germany
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Mitsubishi Hitachi Power Systems Europe GmbH
Schifferstraße 80, 47059 Duisburg Germany Phone +49 203 8038-0, Fax +49 203 8038-1809infobox@eu.mhps.com, www.eu.mhps.com
Mitsubishi Hitachi Power Systems Europe, Ltd.
The Point, 37 North Wharf Road London W2 1AF Phone +44 20 7535 0500 infoboxEU@mhps.com, www.emea.mhps.com
01.2019
PSCA-01SC01E1-C-0
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