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Zhengzhou Boiler Co., Ltd.

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Zhengzhou Boiler Co., Ltd.
Web Page Link: http://www.toboc.com/zhengzhouboilercoltd


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75TPH 3.82MPa CFBC Boiler

"75TPH 3.82MPa CFBC Boiler" is listed under  BoilersCategory

DESIGNING CONDITION amp PERFORMANCE DATA This boiler shall reside either indoor or semi-open-air. The mounting of this boiler combines suspension with sustaining with nominal height of operating floor—7m. This boiler utilizes single drum, natural circulation, concentrated down comers, balanced draft, heat insulating cyclone gas-solid separator, CFBC, convection heat surface arranged in convective pass. 2.1 MAIN DATA SHEET 2.1.1 Technical specification Basic features 1. Specification of boiler ?rated steam output 75t/h ?rated steam pressure 5.29MPa ?rated steam temperature 485? ?drum pressure 5.94MPa ?feed water temperature 104? ?exhaust gas temperature 137? ?boiler designed efficiency 88.37 Percent 2. Fuel Lignite is preferred in this boiler, the specification of it as below: Var=44.96 Percent Qnet.v.ar=13105KJ/kg Car=39.2 Percent Har=1.47 Percent Oar=8.16 Percent Nar= 0.42 Percent Sar= 0.2 Percent War=21.7 Percent Aar=28.85 Percent boiler model:ZG-60/5.29-M boiler type: Single drum, natural circulation, coal fired CFBC boiler. The requirement of granularity of coal for this boiler is that: the range of lignite’s granularity is 0-8mm,The volume of partial coal whose granularity is less than 200m shall not greater than 20 Percent, advocated range shown in below Fig: Advocated range of coal granularity for this boiler Along with the stricter requirement for environmental protection, new control standards for discharging SO2 and NOx of coal-fired boiler have been announced, which have been already taken into consideration in the designing of this boiler. Around the coal feeder in the front part of the boiler, there are two sets of the storage, the F133 tubes have been used for connection between feeder and coal feeding tubes. The Limestone, which takes action in desulfurizing and circulation of materials and supplies, should be fed into the furnace with coal. If diameters of the limestone’s particle are oversize, smaller than superficial area, desulfuing would not be fully activated with low utilization rate. At same time, due to low of particle, the limestone is not able to finish the job in circulation of materials and supplies. But if the particle is too small with short residence time in bed, no good to desulfurization. For improving utilization rate of limestone, the diameter of particle should be controlled within the range of 0-1mm, and the temperature of FBC should be controlled within the range of 850~900?. Either sand or original bed materials could be used as starting bed materials. If using the latter one, the max diameter of bed materials should be less than 3mm. If using former one, sand with low-density is preferred, in which could cause coking without controlling the capacity of Na and K— Na2O=2.0 Percent, K2O=2.5 Percent. Max diameter of particle=6mm. And the mass volume of grain size that less than 100m should be no greater than 25 Percent. 2.1.2 Quality of steam and water To ensure the quality of steam and water in outlet of the boiler, strict control of quality of steam and water in boiler should be applied, especially the quality of feeding water. The quality of feeding water, boiler water, attemperating water and steam should be in line with GB/T12145-2008, steam and water quality standard for thermal power’s and steam power’s equipment. 2.1.3 Main performance index On the conditions that emission value, fuel, limestone and coefficient of excess air are fixed in 1.2, B-MCR and Ca/S mole ratio are fixed in 2.2. item measurement unit rated condition computational efficiency(Qnet) % 88. +66 ensuring efficiency(Qnet) % =88 SO2 concentration of emission SO2 mg/Nm3 350(Ca/S=2.2,O2=6 Percent) NOX concentration of emission NOX mg/Nm3 250 (O2=6 Percent) CO concentration of emission CO mg/Nm3 150 (O2=6 Percent)

Product Detail

Steam Boiler, Coal fired boilter, Boiler
#SteamBoiler, #Coalfiredboilter, #Boiler

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