Bed temperature control system for CFB boiler
The invention relates to the field of CFB boiler, in particular, to a CFB boiler bed temperature control system.
The circulating fluidized bed (CFB) is a new generation developed in recent years in the international efficiency and low emission clean combustion technology, its main feature is the fuel and sorbent after repeated cycles repeated low temperature combustion and desulfurization reaction, Furnace strong turbulence, not only to achieve low NOx emissions and achieve up to 90% desulfurization efficiency and a similar pulverized coal furnace combustion efficiency, but also fuel adaptability, load regulation performance, easy advantage of the comprehensive utilization of ash, So rapid commercial deployment in the world.
The bed temperature control parameters directly affect the important safety CFB boiler can run continuously, but also directly affects the generation of boiler operation of the desulfurization efficiency and NOx. Usually ultra high temperature CFB boiler bed temperature control between 790V~900 ° C, the temperature of the furnace is the optimum temperature to achieve desulfurization. Not only will decrease the bed temperature is too low boiler efficiency, it will result in the boiler unstable and prone to fire. Bed temperature is too high will cause the furnace desulfurization efficiency decreases and the amount of NOx will be greatly increased, but also likely to cause material coking furnace bed, and if the situation coking furnace bed material must be shutdown occurs. Therefore bed temperature control is critical for ultra-high temperature boiler CFB.
The utility model discloses a bed temperature control system for a CFB (Circulating Fluidized Bed) boiler. The bed temperature control system for the CFB boiler can comprise a plurality of groups of bed temperature control devices, wherein each group of bed temperature control devices can comprise a cyclone separator, a material returning device and an external bed; each cyclone separator is arranged in an auxiliary steel frame straddle on two sides of a hearth; each material returning device is arranged below the corresponding cyclone separator; a heat exchanger which is used for controlling the bed temperature is arranged in each external bed; materials separated by each cyclone separator enters the corresponding material returning device; the materials in each material returning device are divided into two parts, one part directly returns to the hearth of the CFB boiler, and the other part passes through the corresponding external bed and then returns to the hearth. The load feed-forward of the boiler can act on valves of the material returning devices, and slight oscillation signals are superposed on control signals of the valves. According to the bed temperature control system for the CFB boiler, the bed temperature control can quickly respond to the actual working conditions and is independent of reheating steam temperature adjustment so as to be stable, quick and accurate.
Circulating fluidised bed Boiler Cases
ZG Boiler Workshop
Why choose ZG Boiler as Bed temperature control system for CFB boiler manufacturer
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.
How about the quality of Bed temperature control system for CFB boiler ?
Our Bed temperature control system for CFB boiler manufactured strictly according to national and international standard. our products have approved ASME, IBR, ISO9001-2008, etc
All our company's products are 100% factory inspected to ensure the high quality.
We provide one year quality warranty service, please rest assured purchase.
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
Our Trade & Market
Total Annual Sales Volume:US$100 Million
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