燃煤锅炉烟气量、二氧化硫浓度、含尘量计算表

燃煤锅炉烟气量、二氧化硫浓度、含尘量计算表,,,,,,

,名称,符号,单位,公式说明,数值,

,一、锅炉基本参数,,,,,

1,锅炉额定蒸发量,D,t/h,设计取定,60,

2,冷空气温度,tlk,℃,设计取定,121,

,二、燃料参数(II类烟煤),,,,,

1,碳,Cy,%,设计燃料数据,55.10,

2,氢,Hy,%,设计燃料数据,2.75,

3,氧,Oy,%,设计燃料数据,2.00,

4,氮,Ny,%,设计燃料数据,0.64,

5,硫,Sy,%,设计燃料数据,0.21,

6,水份,Wy,%,设计燃料数据,6.20,

7,灰份,Ay,%,设计燃料数据,27.22,

8,挥发份,Vr,%,设计燃料数据,5.88,

9,低位发热量,Qdwy,kcal/kg,设计燃料数据,21375.00,

10,理论空气量,V°,m3/kg,0.0889(Cy+0.375*Sy)+0.265Hy-0.0333Oy,5.57,5.800125

11,理论H2O容积,V°H2O,m3/kg,0.111Hy+0.0124Wy+0.0161V°,0.47,

12,理论N2容积,V°N2,m3/kg,0.79V°+0.8Ny/100,4.40,

13,理论RO2容积,VRO2,m3/kg,0.01866*(Cy+0.375*Sy),1.03,

14,过量空气系数,α,,选取,1.30,

15,实际水蒸汽体积,VH2O,m3/kg,V°H2O+0.0161*(α-1)*V°,0.50,

,水蒸汽体积份额,γH2O,,VH2O/Vy,0.07,

16,实际烟气量,Vg,m3/kg,VRO2+V°N2+VH2O+(α-1)*V°,7.60,

17,飞灰份额,αfh,,取定(αfh=0.2),0.12,

18,实际烟气量,Vy,m3/kg,VRO2+V°N2+VH2O+(α-1)*V°,7.60,

19,烟气质量,Gy,kg/kg,1－Ay/100＋1.306αV°,10.18,

20,烟气密度,ρy,kg/m3,Gy/Vy,1.34,

21,烟气飞灰浓度,γfh,Kg/Kg,Ayαfh/(100Gy),0.003,

,三、热平衡参数及计算,,,,,

1,冷空气理论热焓,Ilk°,kcal/kg,"《标准》附表8,公式3-35",29.064,

2,排烟温度,Tpy,℃,假定,170,

3,排烟热焓,Ipy,kcal/kg,查焓温表,856.00,

4,排烟热损失,q2,%,(Ipy-αIlk°)*(100-q4)/Qr,3.8,

5,气体不完全燃烧热损失,q3,%,《标准》附表5,1,

6,固体不完全燃烧热损失,q4,%,《标准》附表5,1,

7,散热损失,q5,%,《标准》表4-1,3,

8,灰渣漏煤比,α(hz+lm),,设计取定,0.8,

9,灰渣热焓,(Ct)hz,kcal/kg,查表thz=600℃,133.8,

10,灰渣物理热损失,q6,%,(Ct)hz*α(hz+lm)*Ay/Qdwy,0.136,

11,锅炉总热损失,∑q,%,Q2+q3+q4+q5+q6,8.93,

12,锅炉的效率,η,%,100-∑q,91.07,

13,保热系数,ψ,,1-q5/(η+q5),0.968,

17,锅炉有效利用热(饱和),Qgl,kcal/h,估算Q=D*600000,36000000,

,锅炉有效利用热(过热),Qgl,kcal/h,《标准》公式4-10,,

18,总燃料消耗量,B,kg/h,Qgl/(Qdwy*η/100),1849.3,

19,计算燃料消耗量,Bj,kg/h,B(1-q4/100),8500.0,

20,产生的烟气量,Qy,m3/s,(Bj/3600)×Vy×(273+Tpy)/273,29.1,

21,产生的烟气量,Qy,m3/h,Bj×Vy×(273+Tpy)/273,104855.2,

22,需引风机流量,Q,m3/h,1.2Qy,125826.2,

,风机设计全压,H,Pa,选取,3000,

,介质压缩系数,ψ,,选取,0.91,

,风机效率,η,%,选取,70,

,引风机需要功率,N°,KW,QHψ/(3600*9.8*η),139.1,

,所需电机功率,N,KW,1.13N°,157.2,

23,烟气流速,wy,m/s,假定(金属烟道取10-15m/s;砖烟道取6-8m/s),11,

24,烟道需要截面积,Fy,m2,Qy/wy,2.6,

25,烟道需要直径,dy,m,(4Fy/3.1415926)0.5,1.84,

26,炉膛过量空气系数,αl,,选取,1.3,

27,需要空气量,Qk,m3/h,1.07*Bj*αl*V°,65827.8,

28,需鼓风机流量,Q,m3/h,1.2Qk,78993.4,

,风机设计全压,H,Pa,选取,2800,

,介质压缩系数,ψ,,选取,1.0,

,风机效率,η,%,选取,70,

,鼓风机需要功率,N°,KW,QHψ/(3600*9.8*η),89.6,

,所需电机功率,N,KW,1.13N°,101.2,

29,空气流速,wk,m/s,假定(一般取烟速的0.5-0.6倍),5.5,

30,风道需要截面积,Fk,m2,Qk/(3600*wk),3.32,

,,,,,,,

,四、锅炉烟尘排放量计算,,,,,

1,飞灰份额,αfh,kg/kg,选取或计算,0.12,

2,单台锅炉产生的烟尘量(除尘器前),M,mg/s,(Bj×106/3600)×(Ay/100+Qdwy×q4/(8100×100))×αfh,84600.2,

3,除尘效率,ηc,%,给定,95,

4,单台锅炉烟尘排放量(除尘器后),MA,mg/s,(Bj×106/3600)×(1-ηc/100)(Aar/100+Qdwy×q4/(8100×100))×αfh,4230.0,

5,单台锅炉烟尘排放浓度(除尘器后),CA,mg/m3,MA×3600/(Qy×273/(273+Tpy)),145.2,

6,多台锅炉烟尘排放浓度,CAi,mg/m3,∑MA×3600/(∑Qy×273/(273+Tpy)),,

7,燃烧后生成的SO2份额,C,,选取(链条炉取0.8-0.85;煤粉炉取0.9-0.92;沸腾炉取0.8-0.85),0.85,

8,单台锅炉产生的SO2量(除尘器前),MSO2,mg/s,(Bj×106/3600)×C×Sar/100×64/32,1833.9,

9,脱硫率,ηso2,%,干式除尘器取0;其它脱硫除尘器可参照产品特性选取,0,

10,SO2排放量(除尘器后),MSO2,mg/s,(Bj×109/3600)×(1-ηso2/100)×Sar/100×64/32,1833.9,

,单台锅炉SO2排放浓度(除尘器后),CSO2,mg/m3,MSO2×3600/(Qy×273/(273+Tpy)),63.0,

11,燃烧时NO转变率,β,%,"与燃料含氮量有关,一般层燃炉取0.25-0.5;煤粉炉取0.2-0.25",0.25,

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