Biomass Combustion in 58 MW Circulating Fluidized-Bed Boiler
58 MW circulating fluidized-bed boiler provide by ZG CFB boiler manufacturer, the 58 MW cfb boiler fired with forestry residues, was performed to study the effect on bottom and fly ash. Ash samples from a period of kaolin dosage were compared with ash samples without kaolin.
Biomass Combustion in 58 MW CFB Boiler
The samples were analyzed for elemental composition, water solubility, and mineralogical composition. The cross-section of bed particles was examined for elements. The agglomeration temperature of the material from the particle seal was determined.
The kaolin, in the form of a fine powder, was supplied to the particle seal. It was found to be carried by the flue gases to the electrostatic filter rather than staying in the bed. Despite this, alkali is removed from the furnace by the kaolin, and thereby, the agglomeration temperature of the bed material increases.The alkali ends up in the fly ash, in which the content of alkali increases and the solubility of alkali decreases, suggesting that alkali aluminum silicates have been formed. These compounds have high melting points and are therefore unlikely to become liquid and stick to the surface of super-heaters.
A small fraction of the kaolin stays in the furnace by forming a thin layer on bed particles. It is concluded that kaolin addition can significantly enhance the operation of a fluidized bed fired with bio-fuels both with respect to super-heater deposition and corrosion and bed agglomeration.
The results show that findings in small-scale reactors are also valid in large-scale combustors. However, under the present circumstances, most kaolin ends up as fly ash.
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We have over 70 years' experience of boiler and autoclave, and we have a professional installation and after-sales staff for products.Take advantage of the most economical way to improve efficiency and operating flexibility, Get substantial savings on your fuel costs,Reduce all emissions for each K/W of electricity generated, including CO2.
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Basic Information of CFB Boiler manufacturer--- ZG Boiler
Number of Employees:above 1500 People
Our products:industrial horizontal steam boiler and hot water boiler(biomass boiler, gas boiler, oil boiler, coal boiler, etc), CFB boiler, power plant boiler, waste heating recovery boiler, Pressure Vessel(AAC autoclave, Curing tank,etc )
Factory Size (Sq.meters):400,000 square meters
Factory Location:Factory 1: Zhengzhou,,Henan, China. Factory 2: Xingyang,Henan,China
Number of R&D Staff:376 people
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