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1.25MPa Industrial CFB Boiler Low Emission Fire Tube Structure Hot Water Output

Categories CFB Boiler
Brand Name: Dehai Boiler
Model Number: CFB
Certification: ISO9001 , SGS , ABS , ASME
Place of Origin: China
MOQ: Negotiable
Price: Negotiable
Payment Terms: L/C, T/T
Supply Ability: 10 Sets / Year
Delivery Time: 150 Days
Packaging Details: Seaworthy packing
Type: Natural Circulation
Pressure: 1.25MPa
Structure: Fire Tube
Design fuel: Bituminous Coal
Design thermal efficiency: 90%
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    1.25MPa Industrial CFB Boiler Low Emission Fire Tube Structure Hot Water Output

    1.25MPa Industrial CFB Boiler Low Emission Fire Tube Structure Hot Water Output


    Coal fired high pressure power plant circulation fluidized bed CFB steam boiler


    Fluidized Bed Introduction


    1. Circulating fluidized bed is a relatively new technology with the ability to achieve lower emission of pollutants. Extensive research has been conducted on this technology within the past 15 years due to increasing concerns over pollution caused by traditional methods of combusting coal and its sustainability. The importance of this technology has grown recently because of tightened environmental regulations for pollutant emission.


    2. The Mercury and Air Toxic Standards enacted in December 2011 by the EPA have forced all the countries in Europe and America to strictly adhere to this policy. This means that emissions such as metals, acid gases, organic compound, flue gas acids and other pollutants from power plants or industrial facilities have to meet the requirements set by EPA and upgrades have to be done for facilities that do not meet the standards. As a result, the demand for circulating fluidized bed technology is predicted to sky rocket.


    Circulation


    1. Fine particles of partly burned coal, ash and bed material are carried along with the flue gases to the upper areas of the furnace and then into a cyclone. In the cyclone the heavier particles separate from the gas and falls to the hopper of the cyclone. 2. This returns to the furnace for recirculation. Hence the name Circulating Fluidized Bed combustion. The hot gases from the cyclone pass to the heat transfer surfaces and go out of the boiler.


    Bed Material


    1. To start with the bed material is sand. Some portion is lost in the ash during the operation and this has to be made-up. In coal fired boilers the ash from the coal itself will be the makeup material.

    2. When firing bio fuels with very low ash content sand will be the makeup bed material. For high Sulphur coals Limestone addition to the bed material reduces SO2 emissions.


    CFB High fuel flexibility

    1. The main advantage of our boiler is its superb fuel flexibility. Most of the over 90 references around the world are multifuel boilers that combust biomasses and fossil fuels in continuously varying proportions.
    2. Cocombustion is an environmentally benign method of combining excellent reliability and availability with great potential to optimize operational costs by allowing several fuel alternatives.


    Main Specifications of Circulation Fluidized Bed Boiler


    boiler capacity
    items

    35t/h75t/h130t/h
    rated steam capacity t/h3575130
    rated working pressure Mpa3.823.825.3
    rated steam temperature℃450450450
    feed water temperature ℃105130150
    combustion methodCirculation fludized bed combustionCirculation fludized bed combustionCirculation fludized bed combustion
    applicable coalCoalCoalCoal
    design the fuel low level caloric1267081176520
    the coal consumption at full load operation(Kg/h)90452041738792
    designed efficiency %88.68888
    exit gas temperature ℃150145150
    De-sulfur efficiency %888888
    fuel particle requirement mm≤10≤8≤10
    lime stone particle requirement mm≤2≤2≤2
    drum central line elevation mm250002830033000
    the highest point elevation l mm267503395054270

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