67707105 chimney design calc (1)

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Combustion CalcInstruction: Enter the design condition by filling out the blue cells!COAL COMBUSTION CALCULATIONREACTANTS:CoalComponentCH2SO2N2H2OashTotalyi0.6820.0570.0220.230.013001.004Mi12.0112.01632.063228.01618.016ni/100 kg fuel5.6782.8270.0690.7190.0460.000Air requirements for chemically correct complete combustionCO2H2OSO2O2 from fuelN2 from fuelH2O from fuelN2 from airO2 requiredProduct5.6782.8270.0690.0460.00024.221O2 required5.6781.4140.069-0.7196.442AFc8.847Products of chemically correct complete combustionComponentCO2H2OSO2 (ppm)N2Total molesn wet5.6782.8270.06924.26732.841x wet0.1730.08620890.7390.997911n dry5.6780.06924.26730.014x dry0.1890.00022860.809ni = mole numberyi = mass fractionAF = Air fuel ratio in mass basisProducts With Excess AirExcess air20.00%ComponentCO2H2OSO2 (ppm)N2O2Total molesM exhaustn wet5.6782.8270.06929.1111.28838.97429.82x wet0.1460.07317610.7470.033n dry5.6780.06929.1111.28836.14630.74x dry0.1570.00018980.8050.036AF10.6164331422Calculations of mass fractionsCO2H2OSO2N2O2M44.01118.0166428.01632.000y wet0.2150.0440.003780.7020.035Flue gas flow calculationItemUnitQtyFlue gas temperatureoC135Flue gas flowNm3/h129000Flue gas specific grafitykg/Nm31.2838Flue gas flowkg/h165610.2Flue gas specific grafitykg/m30.8590132353Gas volume as stackm3/s53.5531135531Stack inner diameterm1.8Area of stackm22.5434Gas velocity*m/s21.0557181541OK*recomended velocity to give an isokinetic flue gas flow in the stack outlet is above 20 m/s, a consideration should be made due to the flue gas abrasive wear and the generation of noise resulted by an exceed velocityACID DEW POINT TEMPERATURE CALCULATIONFormulas for ADP Temperature calculation* :1. Kp = exp(12.12 / T x (1 0.942.T + 0.00702.T 2 0.0108.T. Ln (1000. T) 0.0013 / T))2. pSO3 = KP x PSO2VW /100 x (PO2VW/100)0.53. psO2 = PSO2VW / 1004. PConv = pSO3 / pSO2 x 1005. pH2O = PH2OvW / 1006. ADP* = 203.25 + 27.6 x 10Log(pH2O) + 10.83.10Log(pSO3) + 1.06.(10Log(pSO3) + 8)2.19*A.G. Okkes methodsource : www.engsoft.co.krDescriptionSymbolUnitQtyRemarksSO2 volume percent in wet flue gasSO2%0.17620.00%Excess airSO2 removal eff.-0.882Corrected SO2 percent in wet flue gasSO2c%0.021O2 Volume percent in wet flue gasO2%3.306H2O volume percent in flue gasH2O%7.2545726281Equilibrium temperatureT equilibriumoK/10001.273000Equilibrium constantKP-0.017433Partial pressure of SO3PSO3mmHg1.20E-007Partial pressure of SO2PSO2mmHg0.001761SO3 conversion ratePConv%0.006800Partial pressure of SO3PH2OmmHg0.072546Acid dew point temperatureT ADPoC98.089633

&C&"Bitstream Vera Serif,Roman"&12Page &P2 x 10-4source : www.engsoft.co.kr

Chimney heightInstruction: Enter the design condition by filling out the blue cells!CHIMNEY HEIGHT CALCULATION**Flue GasSymbolUnitValueReference flowVm3/s53.5531135531TemperatureTdK408Heat ReleaseQMW5.6576565197Pollutant Index CalculationPollutantsEmmisions ConcentrationsEmmisions ConcentrationsDischarge rate DGuideline Concentration GdBackground Concentration BcPollutant index Pimg/Nm3mg/m3g/smg/m3mg/m3m3/sSO2450301.102941176516.1250.3650.08056,578.95NO2750501.838235294126.8751.1300.00223,825.35Particullate12080.29411764714.30.1500.05043,000.00Pollutant index Pi56,578.95Gd and Bc values are taken from Kep Kepala Bapedal No. 107 tahun 1997 Tentang: Perhitungan dan Pelaporan Serta Informasi Indeks Pencemaran UdaraPi for calculation purposes is maximum value in table aboveBuoyancy CalculationDescriptionSymbolValuea-0.8594417216b0.4604449419Uncorrected stack heightUb21.3252519453mMinimumUb min2.8893589048