Coal-fired SGS Standard Circulating Fluidized Bed Boiler for Power
Plant
☞CFB Boiler Product Introduction
The CFB boiler has advantages such as the wide application of fuel
(it can burn various high quality coal, fault coal, coal gangue,
bark, andtrash, etc.), high combustion efficiency, good
desulfurization effect, low NOX emissions, etc., of which
development is paid great attentions bycountries worldwide. CFB
boiler is of single drum with the natural circulation, balanced
ventilation, semi- open layout, allseel frame and fullsuspension
structure. The furnace periphery is of full membrane wall structure
and equipped with explosion-proof rigid beam; the whole boilerhas
free expansion downward. ZG has series CFB boiler products with
complete parameters and varieties.
☞CFB Boiler Technical Features
1. Focus on solving the problem of heating surface wear. Select a
reasonable flue gas flow rate and take effective measures for wear
preventionto reduce wear of heating surfaces.
2. Select a reasonable separator inlet flue gas velocity and
ascending velocity to reduce separator wear and improve separation
eficiency of theseparator.
3. Optimize structure of return device to ensure smooth return and
stable furnace bed material.
4. Optimize the number of the blast cap and primary wind speed, to
ensure the smooth fluidization of fuel and coking prevention.
ZG continues to be manufacturing, designing, engineering and
servicing CFB boiler with Class A Boiler design and manufacture
license since1945 for a huge number of satisfied customers. The
price of CFB boiler is not uniform in terms of the price set
according to the specificparameters of the boiler 's point of
view,but ZG will supply the best price for customer.With
independent right of import and export, ZG hasexported CFB boilers
with good quality and suitable price to Argentina, Dutch, Italian,
and Spanish, Tanzania, Nigeria, Serbia, Kazakhstan,Mongolia ,
Malaysia, India, Indonesia, Pakistan, Congo, Russia ,
Singapore,UAE, Thailand Bangladesh,etc
☞CFB Boiler Parameters
| Item | Unit | Specification |
| Model | | HD-35/3.82-M | HD-35/5.3-M |
| Rated evaporation | t/h | 35 |
| Rated steam pressure | MPa | 3.82 | 5.3 |
| Rated steam temperature | ℃ | 450 | 450 |
| Feed water temperature | ℃ | 150 | 150 |
| Fuel type | Anthracite, lean coal, bituminous coal, lignite, petroleum coke,
breeze, etc. |
| Furnace height | M | 22 |
| Furnace section | m2 | 9.6 |
| Number of coal feeder | Unit | 2 |
| Super heater thermostat mode | | Spray desuperheater |
Unburned carbon (bituminous coal) | % | <6 |
| Pre-heater air temperature | ℃ | 140 |
| Exhaust gas temperature | ℃ | 145 |
☞CFB Boiler Construction
Boiler using a single drum, natural circulation, generally divided
into the front and the end of the two shafts.
The vertical shaft at the front is a total suspension structure,
which is composed of membrane type water wall around.
From bottom to top, it is the primary air chamber, dense phase area
and sparse phase area, and the tail flue is the high-temperature
superheater, low-temperature superheater, economizer and air
preheater from top to bottom.
The vertical shafts at the end are supported by a vertical cyclone
separator. The lower part of the separator is connected with a
return device and a ash cooler.
The combustion chamber and separator are equipped with anti-wear
lining inside, the front vertical shaft with tube furnace wall, the
outer metal plate, the rear vertical shaft with light furnace wall,
by eight steel column to bear all the weight of the boiler.
The boiler adopts under-bed ignition (oil or gas), fractional
combustion, primary air ratio of 50-60%, fly ash cycle for low
rate, medium temperature separation of ash and slag discharge using
dry, respectively from the water-cooled screw slag machine, ash
cooler and dust collector dust bucket discharge.
The furnace chamber is the key to ensure the full combustion of
fuel. The turbulent bed is adopted to make the fluidization speed
be 3.5-4.5m /s. The appropriate furnace cross-section is designed.
☞Company Profile
1100 employees, 400,000 ㎡ with fixed assets amounting to USD
110,000,000, 34 years experience, ISO9001, SO3834, EN12952
certificated, 150km expressway to Shanghai,60km state road to Suzhou or Wuxi, this is how we keep superior
quality and competitive offers for global valued customers.
Our main products cover Utility Boiler, HRSG Boiler, coal-fired , oil(gas) -fired,
coal-water-slurry-fired and garbage-fired steam/hot water boilers,
organic heat carrier boilers, etc., and Boiler spare parts
(Economizer, Finned tube, Header, Steam drum, Superheater, Water
wall panel, Air preheater, Cyclone separator, etc., which are
widely used in power generation, heat supply, chemical engineering,
textile, food, paper, road building, plastic, rubber and wood
working industries.
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