bv efficiency

8/3/2019 BV Efficiency

1/21

MwtH2 2.016H2S 34.08C1 16.043C2 30.07

C3 44.097iC4 58.124nC4 58.124iC5 72.151nC5 72.151

Avg. molecular weight

fuel Gas density kg/m3 1.05

fuel oil flow(MT/D) 33.6fuel gas flow(MT/D) 10.02005098

net heat Gross Heat

heating value of fuel fuel oil at 110C (Btu/lb) 17640 18700

heating value of fuel oil at 110C (kJ/kg) 41030.64 43496.2

combustion air flow (MT/D) 1488total air required for complete combustion 629.2354211

when burn oil and fuel gaswt from fuel oil(MT)

C 28.90588235H 3.854117647S 0.84

reqd Air


2/21

vol% wt% C.V(kCal/kg)32.44 0.024182 2.418235 28669.6

4.2975 0.054156 5.415551 3636.413.60875 0.080729 8.072926 11593.613.55145 0.150677 15.06768 11349.6

17.94445 0.292595 29.25946 11079.25.157 0.110836 11.08357 10932.310.5241 0.226187 22.6187 10904.11.40385 0.037453 3.745331 10839.70.86905 0.023185 2.318538 10813.1

2704.412 energy (kCal/kg)energy (kJ/kg)

1

wt from fuel gas (MT) total(MT)

7.504489614 36.410372.106883927 5.9610020.510541083 1.350541

from API data book fig 14A1.1


3/21

wt of carbon per kg wt of H p Kgenergy kCal/kg C H

693.2983807 0 0.024182353196.9310966 0 0.003203565935.9428062 0.060440018 0.0202892471710.121353 0.120371067 0.030305729

3241.714603 0.239087985 0.0535066611211.689502 0.091614342 0.0192213922466.365659 0.186961121 0.039225878405.9826768 0.031174325 0.012557976250.7058782 0.019298392 0.00777398511112.75196 0.748947249 0.21026678746526.869892704.411794

fuel oilC/H wt ratio 7.5S % by wt 2.5

C wt per 1kg 0.860294118H wt per 1kg 0.114705882S wt per 1 kg 0.025


4/21

wt of S p kgS

0 mass of CO2 after combution (kg) 2.744310830.050951945 mass of H2O after combution (kg) 1.879050813

0 mass of SO2 after combution (kg) 0.1018021890 required oxygen (kg) 3.71499785

0 required air (kg) per 1kg of fuel gas 16.048081410000

0.050951945

mass of CO2 after combution (kg) 3.152310749mass of H2O after combution (kg) 1.025070028mass of SO2 after combution (kg) 0.0499501required oxygen (kg) 3.227330877required air (kg) per 1kg of fuel oil 13.94145319


5/21

507497 506836 165.25 3966850890 847019 967.75 23226


6/21

Air vol% wt% mwtN2 0.7809 0.7553 28.013O2 0.2095 0.2314 31.999Ar 0.0093 0.0128 39.948CO2 0.0003 0.0005 44.01

molar mass kg/kmol 28.96SO2 64.065H2O 18.015

O2 % of in flue gas 7.9% of air accompanied with flue gas by volume 34.14002 34.14002cumbustrion air flow rateflue gas temperature

combustion products vol% wt wt% MwtCO2H2OSO2CONox


7/21

C1 C2 C3 C4 C5 Cp (J/molK)31.15 -0.01357 0.000026796 -1.168E-08 2.92E+01

28.106 -0.00000368 0.000017459 -1.065E-08 2.81E+0120.804 -0.00003211 5.1665E-08 0 2.08E+0119.795 0.073436 -0.00005602 1.7153E-08 1.98E+01

8.57E+04 5.7443 0 0 8.78E+042.76E+05 -2.09E+03 8.125 -1.41E-02 9.37E-06 7.43E+05

Cp avg (kJ/kgK) 2.891Air


8/21

out let inletCp (kJ/kgK) temperature C 151.9375 25

1.04E+00 temperature K 361.61888.78E-015.21E-014.50E-01

6.21E-012.02E+00

wt (kg)CHS


9/21

fuel oilC/H wt ratio 7.5S % by wt 2.5

C wt per 1kgH wt per 1kgS wt per 1 kg 0.025


10/21

mass of CO2 after combution (kg) 0mass of H2O after combution (kg) 0mass of SO2 after combution (kg) 0.04995required oxygen (kg) 0.02495required air (kg) per 1kg of oil 0.10778


11/21

combustion airunit value factor

reading m3/min 62 10flow rate m3/D 892800density of air lb/ft3 0.0808

kg/m3 1.294416

mass flow rate MT/D 1155.654605temperature C 40specific heat capacity kJ/kgK 2.890188158Heat available MJ/D 1045939.555


12/21

theoritical air reqd MT/D 629.2354Air flow rate MT/D 1155.655excess O2 % % 75.71242


13/21

FROM TO FACTORkg lb 2.205lb kg 0.453514739m dm 10m ft 3.281

inch m 0.0254ft m 0.304785126m3 dm3 1000L m3 0.001m3 ft3 35.31ft3 m3 0.028320589cu inch m3 1.64E-05SCFM M3/D 40.78164826lb/ft3 kg/m3 16.02psi atm 0.06804atm psi 14.69723692tons/h MT/D 24

CONVERSION FACTORS


14/21

unittemperature C 350O2 % by volume % 7.9unused Air percentage by volume % 34.14001729specific heat capacity of air that temp kJ/kgK 2.89108044

By FUEL GASCO2 mass produced MT/D 27.49813441SO2 mass produced MT/D 3.420553543H2O mass produced MT/D 18.82818493

total mass of product gases MT/D 191.7851904

heat capacity of products at that temp kJ/kgK energy abdorbed MJ/kgKCO2 4.50E-01 106256.674SO2 6.21E-01 31058.02163H2O 2.02E+00 32984.79254Total MJ/D 170299.4882


15/21

FUEL OIL TOTAL105.9176 133.41581.678323 5.09887734.44235 53.27054


16/21

unittheoritical mass of air required MT/D 629.2354211C Air Flow rate MT/D 1155.654605excess air F.R MT/D 526.4191837flue gas temp C 350

Cp of air at flue gas temp kJ/kgK 2.92957266Heat loss by excess air MJ/D 961011.4912


17/21

Column1 Fuel temp Calorific value Flow rate energy givenunit C kJ/kg MT/D MJ/D

FUEL GAS 40 46526.86989 10.020051 466201.6081FUEL OIL 110 43496.2 33.6 1461472.32

1927673.928


18/21

temperature C 382pressure psi 550flow rate tons/hr 19.1enthalpy kJ/kg 3175.7394

total enthalpy of steam MJ/D 1455758.941water inlet temp C 40enthalpy of water kJ/kg 167.6154total enthalpy of water MJ/D 76834.89936energy gained by steam MJ/D 1378924.042


19/21

thermal efficiencyunit

energy produced by fuels MJ/D 1927673.928energy gained by steam MJ/D 1378924.042thermal efficiency % 71.5330545


20/21

unitsenergy given by fuel MJ/D 1927674


21/21

unitloss due to product gases MJ/D 170299.5loss due to unused Air MJ/D 961011.5energy input by combustion air MJ/D 1045940energy input by fuel MJ/D 1927674

combustion efficiency % -12.947

bv efficiency

Documents