Upload
vuonghanh
View
225
Download
2
Embed Size (px)
Citation preview
Cooling & Heating
Bi - drum, water tube, high efficiency boiler
POWERMAXTM
TMPOWERMAX - the ideal boilerfor continuous operations andsuperheated steam
Improving your business
is our business
Thermax offers products, systems
and solutions in energy and
environment engineering to
i ndus t r i a l and commerc i a l
establishments around the world.
Its business expertise covers
heating, cooling, waste heat
recovery, captive power, water
treatment & recycling, air pollution
control & waste management and
performance chemicals. Thermax
brings to customers extensive
e x p e r i e n c e i n i n d u s t r i a l
applications, and expertise through
technology partnerships and
strategic alliances.
Operating from its headquarters in
Pune (Western India), Thermax has
built an international sales & service
network spread over South East
Asia, Middle East, Africa, Russia, UK
and the US. It has a full fledged
manufacturing set up that is
certified for ISO 9001:2000, ISO
14001 and safety management
according to OSHAS (ISO 18000).
In process heat, Thermax offers a
wide range of steam boilers, thermal
o i l hea te rs and hot water
generators. It has expertise in a wide
range of fuels - oil, gas, solid and
agro-waste/ biomass. Supporting a
broad array of industries in
generating, transferring and
conserving heat across a host of
applications, Thermax process heat
products and systems are exported
to North and South America, South
East Asia, Middle East, Africa,
Europe, CIS, Australia, Antarctica
and SAARC.
Sand Bed
FluidisingAir Nozzles
Fuel FeedingNozzles
Fuel FeedingVenturi Fuel
FeedingCross
PlenumChamber
PneumaticSpreader
Dumping
Grate
Air Supply
Rotary FuelFeeder
Fluidised BedSutable for
n Indian Coal
n Imported Coal
n Kutch Lignite
n Rice Husk
n Castor DOC
n Other select multi-fuel options
Firing technique
n Under Bed, Over Bed and Combi-feed
Dumping GrateSuitable for biomass fuels like
¡ Bagasse
¡ Wood Chips
Firing technique
¡ Pneumatic spreading
Customised options available for
Rotary FuelFeeder
Mechanical& PneumaticSpreader
Hydraulic Drive
Ash CollectingHopper
CombustionAir
TravellingGrate
Traveling GrateSuitable for
n Bagasse
n Indian Coal
n Imported Coal
n Wood Chips
n Palm Kernel Shell
n Julia Flora
Firing technique
n Pneumatic spreading
n Mechanical spreading
Presenting the versatile two drum, water tube design, solid fuel fired boiler, popularly known as the Bi-Drum, that is custom made for your application.
TMPowermax comes with several major advantages: n High pressure steam due to its water tube designn Uninterrupted operations n High degree of Superheat due to large super heater n The combustor can be adapted any type of fuel firing - Fluidized Bed Combustion, Travelling Grate, Reciprocating Grate or Dumping Grate - making the boiler suitable for burning any kind of solid fuel
Reciprocating GrateSuitable for
n
n Rice Husk
n Wood Chips
n Palm Kernel Shell
n Palm Fibres
n Other sized Biomass
n High Moisture Biomass
n Process Wastes
n Jungle Waste
n And many more...
Biomass Briquette and Pellete
Combustiontechnologyfrom Germany
Variable Pitch Feeding Screw
Reciprocating Grate
Hydraulic Drive
AshCollectingHopper
Dosing Bin
Sumerged AshHandling system
Ash ScrapingMechanism
RiadiativeSuperheater
ConvectiveSuperheater
Primary air supplyfor zone wisecombustion -Precisely controlledby electricallyactuated damper
Inbed Heat ExchangerInbed heat exchanger is required only in fluidised bed
combustor, where the heat exchanger is immersed in a
bubbling sand bed, to help take away the heat from the
bed. This helps in maintaining combustor temperature
below the ash melting point using minimal excess air,
which also results in higher efficiency.
Since sand is continuously rubbing against the inbed
tubes during operation, special studding is provided on
inbed tubes to avoid erosion.
EconomiserThe Economiser, made of bare tubes, aids in heat recovery
and improving efficiency. Coming after the boiler bank, it
uses the heat of the flue gases coming out from the boiler to
preheat water going into the steam drum.
Air PreheaterThe air preheater is also heat
recovery equipment situated
last in the flue gas path. It is a
cross flow gas-to-gas heat
exchanger, which provides hot
air for combustion.
SuperheaterTMPowermax comes with a superheater located at the top of
the furnace. This superheater is a heat exchanger, which converts saturated steam into superheated steam.
The superheater is constructed in two halves - radiation and convective zones - connected to each other by an attemperator.
The convective zone of the superheater is shielded from radiation by a nose wall, which also guides the flue gases to cover the entire convective superheater area.
The attemperator is a water injecting device that ensures temperature of the outlet steam is controlled within specified limits.
Water out
Water in
Flue gas out
Flue gas in
Flue gas in
Flue gas out
Air in
Air out
Left SideMembrane Wall
Nose/ RearMembraneWallFront Side
Membrane Wall
Right Side
Membrane Wall
Baffle Plate
Flue gastoeconomiser
Ash collection hopper
Ash collectionat flue gasreversal
Flue gasfrom
superheater
Membrane Water FurnaceWall TMThe furnace of the Powermax is made of membrane walls. This is an arrangement
in tube and fin construction, which provides the advantage of a gas tight chamber,
preventing the influx of air which, in turn, results in higher efficiency.
The fuel characteristics determine critical parameters like height and footprint of a
furnace, which ensure complete combustion.
In superheated boilers, the furnace is provided with a ‘nose’ wall. This provides
radiation shielding to the convective zone of the superheater and prevents any
overheating of the convective zone of the superheater tubes. The nose wall guides
the flue gases to cover the entire convective superheater area.
The membrane wall furnace also ensures that flue gases are cool enough to enter the
boiler bank, and that no fouling takes place.
Boiler BankThe boiler bank is a tube nest connecting the water and steam drums, where water is converted into steam.
Downcomer portion of boiler bank, take the water to the water drum, and then a mixture of steam and water rises through, the riser portion of boiler bank tube to the steam drum. Water and steam are separated in the steam drum, and while the steam goes out, water gets re-circulated.
The flue gases turn around in the bottom drum against the baffle wall and rise towards the steam drum.
Ash separation takes place during reversal, and ash is collected in the hopper below the water drum.
Electrostatic Precipitators¡
Electrostatic Precipitators (ESP) is an
arrangement of electrically charged
electrodes. When dust laden gases
enter the ESP through the inlet nozzle,
dust particles get electrically charged
by the emitting electrode. Due to the
influence of this electrical field, these
charged dust particles migrate to the
grounded collecting electrode. The
accumulated dust particles on the
collecting plate are dislodged into the
hopper due to periodic mechanical
rapping. Clean gas then flows out
through the outlet nozzle of the ESP. For boiler applications, the ESP enables
achieving emissions as low as 50 mg/3Nm .
Pollution control equipment
Complete Condensing¡
Power generation through condensing turbine is normally done with power generation as the prime objective.
Here steam demand is controlled according to the requirement of power generation, and the power is normally consumed in an ‘islanding’ mode.
Extraction cum Condensing¡
When power and process are both critical, and need to be catered to equally, Extraction-cum-Condensing Turbines are used.
Steam generation is controlled according to the combined need for process steam and power. This power is consumed either by using a ‘grid parallel’ or ‘islanding’ system.
High PressureSteam from Boiler
Steam to Condense
High PressureSteam from Boiler
Low pressuresteam to process atconstant pressure
Water fromcooling tower
Water tocooling tower
Power generationTMPowermax can support any of your power needs, be it extraction, condensing or a combination
Back Pressure¡
Power generation using back pressure turbine is quite beneficial to many process industries. Normally, steam generation is controlled according to process demand and the power generated is incidental.
The power generated may or may not be sufficient for the complete power requirement of the process house.
The generated power is normally consumed parallel to the grid power or suitable alternative arrangements.
High PressureSteam from Boiler
Low pressuresteam to process atconstant pressure
Steam to Condense
Cyclomax¡
The Cyclomax is an arrangement of multi-cyclones. When dust laden gas enter the cyclone tangentially, the centrifugal force that develops due to the cyclonic action makes the dust particles move outward radially, they finally strike the wall and drop out of the gas stream into the hopper. Clean gas then flows out through the exit tube.
For boiler applications, Cyclomax enables achieving emissions as
3low as 300 to 350 mg/Nm .
Bag Filter¡
Bag filter is an arrangement of filtration material in the form of bags. When dust laden gases pass through the fabric, the dust is retained while clean air passes through. This dust, deposited on the outer surface of the bags, is removed by high pressure compressed air, operating in a pre-determined cycle. This air flow is led into the bags through a pulse-solenoid valve combination which is energized by a solid state sequential controller. Thermax bag filters come with features like casing entry, with perforated sheets that facilitates better gas distribution and pre-separation of coarser dust; bags with snap rings that ensure low outlet emissions; leakproof inlet-cum-bypass-damper and outlet damper for automatic system isolation under high/ low temperature situations for safety.
For boiler applications, bag filters enable achieving emissions 3as low as 100 mg/nm .
Water fromcooling tower
Water tocooling tower
High Pressure steam
In view of our constant endeavor to improve the quality of our products, we reserve the right to alter or change specifications without prior notice. All photographs shown in this publication are representative in purpose and are to be used for reference purpose only. Whilst this information is given in good faith, no warranty or representation is given concerning such information which must not be taken for establishing any contractual or other commitment binding on Thermax Ltd. For actual details and specifications, please refer the Thermax offer document.
Registered Office
D-13, MIDC Industrial Area,R. D. Aga Road Chinchwad, Pune - 411019, IndiaTel.: +91 - 20 - 66122999, 66155000Fax: +91 - 20 - 27472049
www.thermaxglobal.com
Thermax Business Portfolio
Heating
Cooling
Power Generation
Air Pollution Control
Chemicals
Water & Wastewater Solutions
Solar
Specialised Services
Roofing ShedLoading Zone
VibroFeeder
R.P.Gate
Crusher
VibratingScreen
RecycleBucketElevator
ProductBucketElevator
Roof TrusswithSheeting
Boiler bankhopper
Ecomomisher/ Airpre-heater hopper
Polluction controlequipment hopper
Air line
Fly Ash Silo
PneumaticGate ValveDistancePieceAshConditioner
Support
Airout
Airin
A typical layout
A typical ash handling plant
A typical coal handling plant