Fluidized bed boiler

1	Code	CNTL – TS
2	Steam capacity	1.000 kg steam – 30.000kg steam/hour
3	Boiler type	Fluid bed fire, combination of water pipes, fire pipes, external combustion chamber, natural circulation
4	Design pressure	12.0 (kG/cm2) ‐ 30 (kG/cm2)
5	Working pressure	1 (kG/cm2) – 25 (kG/cm2)

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Category: Boilers and equipment

Description
Specifications
Advantages
Application

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.

Specifications

1	Code	CNTL – TS
2	Steam capacity	1.000 kg steam – 30.000kg steam/hour
3	Boiler type	Fluid bed fire, combination of water pipes, fire pipes, external combustion chamber, natural circulation
4	Design pressure	12.0 (kG/cm2) ‐ 30 (kG/cm2)
5	Working pressure	1 (kG/cm2) – 25 (kG/cm2)
6	Saturation steam temperature	18.0 (kG/cm2) ‐ 35.0 (kG/cm2) ‐ Theo TCVN
7	Slightly saturated temperature	165℃ ‐ 230℃
8	Supply water temperature	80℃
9	Boiler efficiency	85 % ± 3
10	Fuel	Loose rice husks, sawdust, indo coal dust, firewood pellets, rice husk pellets and other biomass fuels…
11	Fuel consumption level	No.	Furnace fuel		Kg/ton of steam	Humidity
		1	Loose rice husks		195±5	≤10%
		2	Grinding husks		210±5	≤10%
		3	Sawdust, shavings		215±5	≤20%
		4	Indonesian coal		170±5	≤20%
		5	Rice husk pellets		225±5	≤10%
		6	Sawdust pellets		210±5	≤10%
12	Working voltage	380 VAC – 3 pha – 50Hz
13	Manufacturing standards	Theo 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 column				Guarantee
		1	CO	1000 mg/m³			600 mg/m³
		2	NOX	850 mg/m³			300 mg/m³
		3	SO2	500 mg/m³			300 mg/m³
		4	BỤI	200 mg/m³			150 mg/m³

15	Working mode	Fully automatic (Auto), PLC, Touch screen – Manual control (Manual), when PLC fails.

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.

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.