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QXX116-1.6/130/70-H CFB Hot Water Boiler Technical Advantages

2016-01-15 14:49:06

QXX116-1.6/130/70-H energy saving CFB hot water boiler is a kind of CFB boiler. Engineer Cao, the Senior Engineer and his technical team, designed the 116MW CFB Hot Water Boiler for a Harbin thermal power plant.

CFB hot water boiler

QXX116-1.6/130/70-H CFB Hot Water Boiler Technical Advantages

1, high combustion efficiency, energy saving evidently. Due to circulating fluidized bed boiler gas-solids mixed well, and the fuel particles could recycle burning, so the time of fuel kept in the furnace become longer, the combustion efficiency is up to 97-99%. Boiler thermal efficiency is about 85%, 15%-20% higher than the national standard. Bring remarkable energy saving effect and economic benefit. Also reduce the waste of energy and the particulate emissions, have great social benefit.  
2, energy saving circulating fluidized bed boiler has wide output adjustment range and fast regulation speed. high air velocity and fuel concentration are easy to control make its heat-absorbing easier to control, so the energy saving circulating fluidized bed boiler with strong ability to adapt the load changing, load range change ratio is up to 1/3~1/4. Both high and low load, the combustion efficiency could maintain a constant value. At the same time, the load regulation speed is fast, up to 5% per minute. So the boiler is particularly applicable for companies regulate load frequently .
3,clean burning, excellent environmental performance. Circulating fluidized bed combustion temperature only around 850 ℃~ 950℃, is a low-temperature combustion, at the same time, adopt the staging air, staged combustion, air get into bed from different heights along with the flow of combustion, combustion chamber is in a circulating combustion state, thus there are three major techniques in environmental benefits.
①, add limestone to the fuel, can be economically desulfurization, when the Ca / S molar ratio is 1.5 to 2.5, the desulfurization efficiency could up to 85% -90%.
②, due to the furnace temperature is in the range of 850 ℃ -950 ℃, so the amount of NOx emissions can be controlled at 200ppm or less.
③, slag with high activity , low carbon content, can be used for cement clinker and construction materials.
4, easy to ignite, and could press the fire for a long time. Higher volume heat load, the cross-sectional area of its dense area is only 1/3 ~ 1/2 of the traditional circulating fluidized bed boiler, while the dense area is adiabatic chamber, so the ignition convenient and easy, the press fire up to about 30 hours.
5, compact structure, low maintenance. Since circulating fluidized bed boiler has few mechanical transmission, also no pipe laying heating surface, so fundamentally eliminate grate drive failures and pipe wear and extend operating cycle, reducing the labor intensity.

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