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Biomass circulating fluidized bed boiler
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Circulating fluidized bed boiler
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Descriptions
Product Introduction
In the combustion system of this boiler, the feeder sends biomass fuel into the furnace, and the air required for boiler combustion is provided by primary and secondary blowers, respectively. The air sent by the primary blower is preheated by the primary air preheater and then introduced into the lower water-cooled air chamber from the left and right air ducts, entering the combustion chamber through the wind caps on the water-cooled air distribution plate; the air sent by the secondary blower is preheated by the secondary air preheater and then injected into the furnace through nozzles distributed on the front and rear walls of the furnace, supplementing air and enhancing disturbance and mixing. The fuel and air are mixed and burned in a fluidized state in the furnace, and heat exchange is carried out with the heating surface. The flue gas in the furnace (carrying a large amount of unburned carbon particles) further burns and releases heat in the upper part of the furnace. After leaving the furnace and carrying a large amount of material, the flue gas passes through a spiral cyclone separator, and most of the material is separated and returned to the furnace through a return device to achieve circulating combustion. The separated flue gas is discharged from the tail flue through the turning chamber, high-temperature superheater, low-temperature superheater, economizer, primary and secondary air preheaters. Due to the adoption of circulating fluidized bed combustion, by adding limestone to the furnace, the emission of SO2 in the flue gas can be significantly reduced, and the low-temperature and air-graded combustion technology can significantly suppress the generation of NOx. Its ash and slag have good activity and high comprehensive utilization value, so it is more suitable for increasingly stringent environmental protection requirements.
Main Products: 10～130t/h biomass circulating fluidized bed steam and hot water boilers;
Performance Characteristics
1、Membrane water wall suspended furnace and membrane water wall flue at the separator inlet.
2、Uses easily replaceable, low-resistance, ash-free bell-type wind caps.
3、Technical improvements to the separator and central cylinder for low resistance and high separation efficiency.
4、Uses a reliable return device and is equipped with an independent Roots blower for air supply, saving electricity consumption.
5、Uses a low bed pressure operation mode.
6、Uses a primary blower with lower pressure head to reduce blower power consumption.
7、Optimized secondary air arrangement and nozzle flow rate to reduce the secondary blower pressure head.
8、The air preheater adopts a multi-tube box arrangement, and the low-temperature section uses corrosion-resistant steel pipes to avoid overall replacement due to low-temperature corrosion.
Product Parameters
| Biomass Circulating Fluidized Bed Boiler |
| Capacity: 10-130T/H |
| Working Pressure ≤ 9.8 Mpa |
Specific parameters can be designed according to the actual needs of users. Applicable Fuel Loose straw-like fuel, pressed into shaped fuel |
Key words:
Biomass circulating fluidized bed boiler
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