燃煤鍋爐煙氣量、二氧化硫濃度、含塵量計算表

燃煤鍋爐煙氣量、二氧化硫濃度、含塵量計算表,,,,,,

,名稱,符號,單位,公式說明,數(shù)值,

,一、鍋爐基本參數(shù),,,,,

1,鍋爐額定蒸發(fā)量,D,t/h,設(shè)計取定,60,

2,冷空氣溫度,tlk,℃,設(shè)計取定,121,

,二、燃料參數(shù)(II類煙煤),,,,,

1,碳,Cy,%,設(shè)計燃料數(shù)據(jù),55.10,

2,氫,Hy,%,設(shè)計燃料數(shù)據(jù),2.75,

3,氧,Oy,%,設(shè)計燃料數(shù)據(jù),2.00,

4,氮,Ny,%,設(shè)計燃料數(shù)據(jù),0.64,

5,硫,Sy,%,設(shè)計燃料數(shù)據(jù),0.21,

6,水份,Wy,%,設(shè)計燃料數(shù)據(jù),6.20,

7,灰份,Ay,%,設(shè)計燃料數(shù)據(jù),27.22,

8,揮發(fā)份,Vr,%,設(shè)計燃料數(shù)據(jù),5.88,

9,低位發(fā)熱量,Qdwy,kcal/kg,設(shè)計燃料數(shù)據(jù),21375.00,

10,理論空氣量,V°,m3/kg,0.0889(Cy+0.375*Sy)+0.265Hy-0.0333Oy,5.57,5.800125

11,理論H2O容積,V°H2O,m3/kg,0.111Hy+0.0124Wy+0.0161V°,0.47,

12,理論N2容積,V°N2,m3/kg,0.79V°+0.8Ny/100,4.40,

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

14,過量空氣系數(shù),α,,選取,1.30,

15,實際水蒸汽體積,VH2O,m3/kg,V°H2O+0.0161*(α-1)*V°,0.50,

,水蒸汽體積份額,γH2O,,VH2O/Vy,0.07,

16,實際煙氣量,Vg,m3/kg,VRO2+V°N2+VH2O+(α-1)*V°,7.60,

17,飛灰份額,αfh,,取定(αfh=0.2),0.12,

18,實際煙氣量,Vy,m3/kg,VRO2+V°N2+VH2O+(α-1)*V°,7.60,

19,煙氣質(zhì)量,Gy,kg/kg,1－Ay/100＋1.306αV°,10.18,

20,煙氣密度,ρy,kg/m3,Gy/Vy,1.34,

21,煙氣飛灰濃度,γfh,Kg/Kg,Ayαfh/(100Gy),0.003,

,三、熱平衡參數(shù)及計算,,,,,

1,冷空氣理論熱焓,Ilk°,kcal/kg,"《標(biāo)準(zhǔn)》附表8,公式3-35",29.064,

2,排煙溫度,Tpy,℃,假定,170,

3,排煙熱焓,Ipy,kcal/kg,查焓溫表,856.00,

4,排煙熱損失,q2,%,(Ipy-αIlk°)*(100-q4)/Qr,3.8,

5,氣體不完全燃燒熱損失,q3,%,《標(biāo)準(zhǔn)》附表5,1,

6,固體不完全燃燒熱損失,q4,%,《標(biāo)準(zhǔn)》附表5,1,

7,散熱損失,q5,%,《標(biāo)準(zhǔn)》表4-1,3,

8,灰渣漏煤比,α(hz+lm),,設(shè)計取定,0.8,

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

10,灰渣物理熱損失,q6,%,(Ct)hz*α(hz+lm)*Ay/Qdwy,0.136,

11,鍋爐總熱損失,∑q,%,Q2+q3+q4+q5+q6,8.93,

12,鍋爐的效率,η,%,100-∑q,91.07,

13,保熱系數(shù),ψ,,1-q5/(η+q5),0.968,

17,鍋爐有效利用熱(飽和),Qgl,kcal/h,估算Q=D*600000,36000000,

,鍋爐有效利用熱(過熱),Qgl,kcal/h,《標(biāo)準(zhǔn)》公式4-10,,

18,總?cè)剂舷牧?B,kg/h,Qgl/(Qdwy*η/100),1849.3,

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

20,產(chǎn)生的煙氣量,Qy,m3/s,(Bj/3600)×Vy×(273+Tpy)/273,29.1,

21,產(chǎn)生的煙氣量,Qy,m3/h,Bj×Vy×(273+Tpy)/273,104855.2,

22,需引風(fēng)機流量,Q,m3/h,1.2Qy,125826.2,

,風(fēng)機設(shè)計全壓,H,Pa,選取,3000,

,介質(zhì)壓縮系數(shù),ψ,,選取,0.91,

,風(fēng)機效率,η,%,選取,70,

,引風(fēng)機需要功率,N°,KW,QHψ/(3600*9.8*η),139.1,

,所需電機功率,N,KW,1.13N°,157.2,

23,煙氣流速,wy,m/s,假定(金屬煙道取10-15m/s;磚煙道取6-8m/s),11,

24,煙道需要截面積,Fy,m2,Qy/wy,2.6,

25,煙道需要直徑,dy,m,(4Fy/3.1415926)0.5,1.84,

26,爐膛過量空氣系數(shù),αl,,選取,1.3,

27,需要空氣量,Qk,m3/h,1.07*Bj*αl*V°,65827.8,

28,需鼓風(fēng)機流量,Q,m3/h,1.2Qk,78993.4,

,風(fēng)機設(shè)計全壓,H,Pa,選取,2800,

,介質(zhì)壓縮系數(shù),ψ,,選取,1.0,

,風(fēng)機效率,η,%,選取,70,

,鼓風(fēng)機需要功率,N°,KW,QHψ/(3600*9.8*η),89.6,

,所需電機功率,N,KW,1.13N°,101.2,

29,空氣流速,wk,m/s,假定(一般取煙速的0.5-0.6倍),5.5,

30,風(fēng)道需要截面積,Fk,m2,Qk/(3600*wk),3.32,

,,,,,,,

,四、鍋爐煙塵排放量計算,,,,,

1,飛灰份額,αfh,kg/kg,選取或計算,0.12,

2,單臺鍋爐產(chǎn)生的煙塵量(除塵器前),M,mg/s,(Bj×106/3600)×(Ay/100+Qdwy×q4/(8100×100))×αfh,84600.2,

3,除塵效率,ηc,%,給定,95,

4,單臺鍋爐煙塵排放量(除塵器后),MA,mg/s,(Bj×106/3600)×(1-ηc/100)(Aar/100+Qdwy×q4/(8100×100))×αfh,4230.0,

5,單臺鍋爐煙塵排放濃度(除塵器后),CA,mg/m3,MA×3600/(Qy×273/(273+Tpy)),145.2,

6,多臺鍋爐煙塵排放濃度,CAi,mg/m3,∑MA×3600/(∑Qy×273/(273+Tpy)),,

7,燃燒后生成的SO2份額,C,,選取(鏈條爐取0.8-0.85;煤粉爐取0.9-0.92;沸騰爐取0.8-0.85),0.85,

8,單臺鍋爐產(chǎn)生的SO2量(除塵器前),MSO2,mg/s,(Bj×106/3600)×C×Sar/100×64/32,1833.9,

9,脫硫率,ηso2,%,干式除塵器取0;其它脫硫除塵器可參照產(chǎn)品特性選取,0,

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

,單臺鍋爐SO2排放濃度(除塵器后),CSO2,mg/m3,MSO2×3600/(Qy×273/(273+Tpy)),63.0,

11,燃燒時NO轉(zhuǎn)變率,β,%,"與燃料含氮量有關(guān),一般層燃爐取0.25-0.5;煤粉爐取0.2-0.25",0.25,

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