Fluidized bed boiler

1CodeCNTL – TS
2Steam capacity1.000 kg steam – 30.000kg steam/hour
3Boiler typeFluid bed fire, combination of water pipes, fire pipes, external combustion chamber, natural circulation
4Design pressure12.0 (kG/cm2) ‐ 30 (kG/cm2)
5Working pressure1 (kG/cm2) – 25 (kG/cm2)

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Fluidized Bed Boilers, also known as bubbling bed boilers, utilize a fluidized combustion chamber to burn fuel. This chamber ensures even mixing and complete combustion of the fuel, while maintaining a not-too-high temperature, reducing the emission of harmful gases.

Fluidized bed boilers can burn various fuels from coal, biomass-derived fuel, industrial waste, and sorted domestic waste. Therefore, not only are fluidized bed boilers high-performance, but they are also environmentally friendly with low emissions.

Application

The fluidized bed boiler is widely used across many industrial sectors. Every factory or industrial zone requires heat, steam, and electricity.

For instance, activities such as boiling, cooking, or sterilization are typical in factories producing food, beverages, and seasonings.

Fluidized bed boilers are also present in paper manufacturing, textiles, pharmaceuticals,… helping save up to 80% on fuel costs.

In the thermal power industry, fluidized bed boilers produce high kinetic steam, driving the turbines of power generators, thus generating electrical energy.

Advantages

  • The fluidized bed boiler has the ability to efficiently burn a wide range of fuels, from fossil fuels, household waste, industrial waste, to biomass. The heat produced is maximally utilized in thermal power production and food processing.
  • In particular, Biomass – fuel derived from plants that is cost-effective but provides energy equivalent to coal, has helped save costs when using the boiler. The fluidized bed boiler is also more intelligently designed with a compact heat transfer system, supporting the combustion of various fuels.
  • The start-up time is quick, and the boiler cleaning requires less effort compared to previous systems. It provides stable steam, maintaining pressure and temperature at standard levels, with a heat source always maintained at about 800 – 900°C.
  • The process of convective heat exchange – where different temperatures or between solids and liquids exchange heat – occurs efficiently.
  • Emissions like NOx, SOx are less than traditional boilers, making the fluidized bed boiler more environmentally friendly. Ash and slag do not easily adhere to equipment, reducing wear and tear.
  • The issue of fuel supply for the boiler has become more convenient and faster, thanks to the conveyor belt and automatic screw conveying system. Notably, the durability and lifespan of the fluidized bed boiler are also very high.

Specifications

1CodeCNTL – TS
2Steam capacity1.000 kg steam – 30.000kg steam/hour
3Boiler typeFluid bed fire, combination of water pipes, fire pipes, external combustion chamber, natural circulation
4Design pressure12.0 (kG/cm2) ‐ 30 (kG/cm2)
5Working pressure1 (kG/cm2) – 25 (kG/cm2)
6Saturation steam temperature18.0 (kG/cm2) ‐ 35.0 (kG/cm2) ‐ Theo TCVN
7Slightly saturated temperature165℃ ‐ 230℃
8Supply water temperature80℃
9Boiler efficiency85 % ± 3
10FuelLoose rice husks, sawdust, indo coal dust, firewood pellets, rice husk pellets and other biomass fuels…
11
Fuel consumption level
No.Furnace fuelKg/ton of steamHumidity
1Loose rice husks195±5≤10%
2Grinding husks210±5≤10%
3Sawdust, shavings215±5≤20%
4Indonesian coal170±5≤20%
5Rice husk pellets225±5≤10%
6Sawdust pellets210±5≤10%
12Working voltage380 VAC – 3 pha – 50Hz
13Manufacturing standardsTheo TCVN6413‐1998, TCVN6004‐6008, TCVN7704‐2007
14
Environmental emissions
Commitment to exhaust gas composition in accordance with QCVN19:2009/BTNMT as follows:
The noise 1m away from the furnace is less than 85dB
No.Standard QCVN19:2009/BTNMT columnGuarantee
1CO1000 mg/m3600 mg/m3
2NOX850 mg/m3300 mg/m3
3SO2500 mg/m3300 mg/m3
4BỤI200 mg/m3150 mg/m3
15Working modeFully automatic (Auto), PLC, Touch screen – Manual control (Manual), when PLC fails.

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