锅炉热力计算表

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序号,名称,符号,单位,公式或来源,设计煤种,校核煤种

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一,原始数据,,,,,

1,锅炉最大连续蒸发量,Dgr,t/h,锅炉厂提供数据,670,670

2,过热器出口蒸汽压力,Pgr,MPa(g),锅炉厂提供数据,13.73,13.73

3,过热器出口蒸汽温度,tgr,℃,锅炉厂提供数据,540,540

4,再热器蒸汽流量,Dzr,t/h,锅炉厂提供数据,553.76,553.76

5,再热器进口蒸汽压力,Pzrj,MPa(g),锅炉厂提供数据,2.661,2.661

6,再热器出口蒸汽压力,Pzrc,MPa(g),锅炉厂提供数据,2.395,2.395

7,再热器进口蒸汽温度,tzrj,℃,锅炉厂提供数据,326.7,326.7

8,再热器出口蒸汽温度,tzrc,℃,锅炉厂提供数据,540,540

9,省煤器进口给水温度,tgs,℃,锅炉厂提供数据,254.1,254.1

10,省煤器进口给水压力,Pgs,MPa(g),,15.8,15.8

11,汽包压力,Pqb,MPa(g),,15.1,15.1

12,锅炉排污率,ηpw,,,0.02,0.02

13,锅炉效率,ηg,,锅炉厂提供数据,0.92,0.92

14,机械未完全燃烧损失,q4,,暂取,0.005,0.005

15,飞灰份额,αfh,,暂取,0.9,0.9

16,空预器出口一次风温,"tkyⅠ""",℃,,320,318

17,空预器出口二次风温,"tkyⅡ""",℃,,331,327

18,空预器出口烟气温度（修正后),tpy,℃,,145,145

19,空预器进口一次风温,tkyⅠ',℃,锅炉厂提供数据,25,25

20,空预器进口二次风温,tkyⅡ',℃,锅炉厂提供数据,23,23

21,空预器一次风至二次风漏风量,GⅠ→Ⅱ,kg/s,,0,0

22,空预器二次风至烟气漏风量,GⅡ→烟,kg/s,锅炉厂提供数据,8.44,8.44

23,空预器一次风至烟气漏风量,GⅠ→烟,kg/s,锅炉厂提供数据,2.44,2.44

24,炉膛出口过剩空气系数,αl,,估取,1.2,1.2

25,炉膛漏风系数,△αl,,估取,0.01,0.01

26,过热器漏风系数,△αgr,,估取,0.03,0.03

27,再热器漏风系数,△αzr,,估取,0.03,0.03

28,省煤器漏风系数,△αsm,,估取,0.02,0.02

29,空预器漏风率,△Lky,,锅炉厂提供数据,0.05,0.05

30,除尘器漏风率,△Lc,,估取,0.1,0.1

31,每十米钢烟道漏风系数,△αyd,,估取,0.01,0.01

32,当地大气压,P,kPa,当海拔高度高于300m时对容积流量和速度做修正：P0/PP0取固定值，,102.1,102.1

33,标准大气压,P0,kPa,见《制粉规程》第98页，本工程不用修正，因此取比值为1（实际P=102.1）,102.1,102.1

34,冷风温度,tlf,℃,,20,20

35,夏季通风室外计算温度,tx,℃,暖通提供,27,27

36,湿空气密度(高于100℃),ρkr,kg/Nm3,,1.285,1.285

37,湿空气密度(低于100℃),ρkl,kg/Nm3,,1.306,1.306

38,干空气密度,ρkg,kg/Nm3,,1.293,1.293

39,磨煤机运行台数,n,,选用MPS磨5台（4＋1运行）,4,5

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二,燃料特性,,,,,

1,收到基水分,Mt(Mar),%,电厂提供数据,9.53,16.19

2,空干基水分,Mad,%,电厂提供数据,2.66,6.47

3,干燥无灰基挥发分,Vdaf,%,电厂提供数据,46.11,44.70

4,收到基灰分,Aar,%,电厂提供数据,35.95,30.69

5,收到基碳,Car,%,电厂提供数据,41.92,40.13

6,收到基氢,Har,%,电厂提供数据,2.83,2.65

7,收到基氧,Oar,%,电厂提供数据,8.64,9.33

8,收到基氮,Nar,%,电厂提供数据,0.62,0.63

9,收到基硫,Sar,%,电厂提供数据,0.51,0.38

10,收到基低位发热量,"Qar,net,p",kJ/kg,电厂提供数据,14550,13480

,,,kcal/kg,,3480,3224

11,哈氏可磨性系数,HGI,,电厂提供数据,60,62

12,灰变形温度,DT,℃,电厂提供数据,1350,1240

13,灰软化温度,ST,℃,电厂提供数据,1390,1290

14,灰流动温度,FT,℃,电厂提供数据,1440,1350

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验算,成份总和,,%,,100.00,100.00

,收到基低位发热量(门得列也夫公式),"Qar,net,p",kcal/kg,,3823,3573

,收到基低位发热量(日本公式),"Qar,net,p",kcal/kg,,,

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三,燃料量计算,,,,,

1,过热蒸汽焓,igr,kJ/kg,"由Pgr,tgr查表得",3435,3435

2,再热蒸汽进口焓,izrj,kJ/kg,"由Pzrj,tzrj查表得",3068.7,3068.7

3,再热蒸汽出口焓,izrc,kJ/kg,"由Pzrc,tzrc查表得",3551,3551

4,给水焓,igs,kJ/kg,"由Pgs,tgs查表得",1105.6,1105.6

5,排污水焓,ipw,kJ/kg,由Pqb查表得,1615,1615

6,锅炉实际耗煤量,Bg,t/h,"Bg=(Dgr(igr－igs)+Dgr×ηpw×(ipw－igs)+Dzr(izrc－izrj))/(ηg×Qar,net,p)",137.05,147.93

7,锅炉计算耗煤量,Bj,t/h,Bj=Bg(1-q4),136.37,147.19

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四,理论空气量及理论烟气量,,,,,

1,理论空气量,V0,Nm3/kg,V0＝0.0889(Car+0.375Sar)+0.265Har－0.0333Oar,4.206,3.972

2,燃烧产物理论体积,V0N2,Nm3/kg,V0N2＝0.79V0+0.008Nar,3.328,3.143

,,V0RO2,Nm3/kg,V0RO2＝1.866(Car+0.375Sar)×10-2,0.786,0.751

,,V0H2O,Nm3/kg,V0H2O＝0.111Har+0.0124Mt+0.0161V0,0.500,0.559

3,理论烟气量,V0y,Nm3/kg,V0y＝V0N2+V0RO2+V0H2O,4.613,4.453

4,理论干烟气量,V0gy,Nm3/kg,V0gy＝V0N2+V0RO2,4.113,3.894

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五,烟气量计算,,,,,

1,空气预热器出口烟气量,,,,,

⑴,空预器入口过剩空气系数,αky',,αky'=αl+△αgr+△αzr+△αsm,1.28,1.28

⑵,空预器漏风系数,△αky,,△αky=△Lky(V0y+1.0161(αky'-1)V0)/V0,0.0691,0.0703

⑶,空预器出口过剩空气系数,αpy,,αpy=αky'+△αky,1.3491,1.3503

⑷,空预器出口燃烧产物实际体积,Vpydw,Nm3/kg,Vpydw=V0y+1.0161(αpy-1)V0,6.1053,5.8667

⑸,空预器出口干烟气实际体积,Vgydw,Nm3/kg,Vgydw=V0gy+(αpy-1)V0,5.5816,5.2855

⑹,空预器出口烟气量,Vpy,m3/h,Vpy=Vpydw×Bj×1000×(tpy+273)/273×P0/P,1274770,1322202

,,,m3/s,Vpy/3600,354.10,367.28

,,,Nm3/h,Vpydw×Bj×1000,832565,863544

,每台空预器出口烟气量,,m3/s,Vpy/2,177.05,183.64

⑺,空预器出口烟气比重,γpy,kg/m3,γpy=(1-0.01Aar+1.306αpy×V0)/Vpydw×273/(273+tpy)×P/P0,0.8612,0.8569

⑻,空预器出口干烟气量,Vpyg,m3/h,Vpyg=Vgydw×Bj×1000×(tpy+273)/273×P0/P,1165432,1191204

,,,m3/s,Vpyg/3600,323.73,330.89

,,,Nm3/h,Vgydw×Bj×1000,761155,777988

,,,kg/s,(Vpyg/3600)×γpy,278.81,283.54

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2,除尘器进口处烟气量,,,,,

⑴,空预器出口至脱硫除尘岛入口钢烟道长度,Lyd1,10m,估计,3.5,3.5

⑵,空预器出口至脱硫除尘岛入口钢烟道漏风系数,△αyd1,,△αyd1=Lyd1×△αyd,0.035,0.035

⑶,脱硫除尘岛进口过剩空气系数,αc',,αc'=αpy+△αyd1,1.38407,1.38528

⑷,脱硫除尘岛进口燃烧产物实际体积,Vc'dw,Nm3/kg,Vc'dw=Vpydw+1.0161△αyd1×V0,6.255,6.008

⑸,脱硫除尘岛进口烟气温度,tc',℃,tc'=tpy,145.0,145.0

⑹,脱硫除尘岛进口烟气量,Vc',m3/h,Vc'=Vc'dw×Bj×1000×(tc'+273)/273×P0/P,1306002,1354036

,,,m3/s,Vc'/3600,362.78,376.12

,,,Nm3/h,Vc'dw×Bj×1000,852963,884335

⑺,脱硫除尘岛进口烟气比重,γc',kg/m3,γc'=(1-0.01Aar+1.306αc'×V0)/Vc'dw×273/(273+tc')×P/P0,0.8607,0.8565

⑻,脱硫除尘岛进口干烟气实际体积,Vc'gdw,Nm3/kg,Vc'gdw=Vgydw+△αyd1×V0,5.73,5.42

⑼,脱硫除尘岛进口干烟气温度,tc'g,℃,tc'g=tc',145.0,145.0

⑽,脱硫除尘岛进口干烟气量,Vc'g,m3/h,Vc'g=Vc'gdw×Bj×1000×(tc'g+273)/273×P0/P,1196168,1222534

,,,m3/s,Vc'g/3600,332.27,339.59

,,,Nm3/h,Vc'gdw×Bj×1000,781230,798449

(11),脱硫除尘岛进口干烟气比重,γc'g,kg/m3,γc'g=γc'×Vc'dw/Vc'gdw,0.9398,0.9486

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3,脱硫除尘岛出口处烟气量,,,,,

⑴,脱硫除尘岛漏风系数,△αc,,△αc=△Lc(V0y+1.0161(αc'-1)V0)/V0,0.14871,0.15127

⑵,脱硫除尘岛出口过剩空气系数,"αc""",,"αc""=αc'+△αc",1.53278,1.53655

⑶,脱硫除尘岛出口燃烧产物实际体积,"Vc""dw",Nm3/kg,"Vc""dw=Vpydw+1.0161(△αyd1+△αc)×V0",6.890,6.618

⑷,脱硫除尘岛出口烟气温度,"tc""",℃,tc'=tpy,145.0,145.0

⑸,脱硫除尘岛出口烟气量,"Vc""",m3/h,"Vc""=Vc""dw×Bj×1000×(tc""+273)/273×P0/P",1438704,1491620

,,,m3/s,"Vc""/3600",399.64,414.34

,,,Nm3/h,"Vc""dw×Bj×1000",939632,974192

⑹,脱硫除尘岛出口烟气比重,"γc""",kg/m3,"γc""=(1-0.01Aar+1.306αc""×V0)/Vc""dw×273/(273+tc"")×P/P0",0.8588,0.8549

⑺,脱硫除尘岛出口干烟气实际体积,"Vc""gdw",Nm3/kg,"Vc""gdw=Vgydw+(△αyd1+△αc)×V0",6.35,6.03

⑻,脱硫除尘岛出口干烟气温度,"tc""g",℃,"tc""g=tc""",145.0,145.0

⑼,脱硫除尘岛出口干烟气量,"Vc""g",m3/h,"Vc""g=Vc""gdw×Bj×1000×(tc""g+273)/273×P0/P",1326768,1357938

,,,m3/s,"Vc""g/3600",368.55,377.20

,,,Nm3/h,"Vc""gdw×Bj×1000",866526,886883

⑽,脱硫除尘岛出口干烟气比重,"γc""g",kg/m3,"γc""g=γc""×Vc""dw/Vc""gdw",0.9312,0.9391

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4,引风机进口处烟气量,,,,,

⑴,脱硫除尘岛出口至引风机入口钢烟道长度,Lyd2,10m,估计,4,4

⑵,脱硫除尘岛出口至引风机入口钢烟道漏风系数,△αyd2,,△αyd2=Lyd2×△αyd,0.04,0.04

⑶,引风机进口过剩空气系数,αxj,,"αxj=αc""+△αyd2",1.5728,1.5766

⑷,引风机进口燃烧产物实际体积,Vxjdw,Nm3/kg,Vxjdw=Vpydw+1.0161(△αyd1+△αc+△αyd2)×V0,7.061,6.780

⑸,引风机进口烟气温度,txj,℃,,145.0,145.0

⑹,引风机进口烟气量,Vxj,m3/h,Vxj=Vxjdw×Bj×1000×(txj+273)/273×P0/P,1474398,1528002

,,,m3/s,Vxj/3600,409.55,424.44

,,,Nm3/h,Vxjdw×Bj×1000,962944,997953

⑺,引风机进口烟气比重,γxj,kg/m3,γxj=(1-0.01Aar+1.306αxj×V0)/Vxjdw×273/(273+txj)×P/P0,0.8583,0.8545

⑻,引风机进口干烟气实际体积,Vxjgdw,Nm3/kg,Vxjgdw=Vgydw+(△αyd1+△αc+△αyd2)×V0,6.5225,6.1842

⑼,引风机进口干烟气温度,txjg,℃,txjg=txj,145.0,145.0

⑽,引风机进口干烟气量,Vxjg,m3/h,Vxjg=Vxjgdw×Bj×1000×(txjg+273)/273×P0/P,1361896,1393743

,,,m3/s,Vxjg/3600,378.30,387.15

,,,Nm3/h,Vxjgdw×Bj×1000,889468,910267

(11),引风机进口干烟气比重,γxjg,kg/m3,γxjg=γxj×Vxjdw/Vxjgdw,0.9292,0.9369

(12),每台引风机风量,V引风机,m3/h,V引风机=Vxj/2,737199,764001

,,,m3/s,V引风机/3600,204.78,212.22

,,,kg/s,(V引风机/3600)×γxj,175.76,181.35

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,烟囱烟气体积,,m3/s,,1267.77,1313.85

,烟囱烟气密度,,kg/m3,,0.8318,0.8282

,烟囱烟气温度,,℃,,158.3,158.3

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六,烟气露点,,,,,

1,空预器出口烟气湿分量,G',kg/s,G'=(V0H2O+0.0161(αpy-1)V0)×0.804×Bj×1000/3600,15.948,19.108

2,空预器出口烟气比重,γpy,kg/m3,,0.8612,0.8569

3,空预器出口烟气重量流量,Gy',kg/s,Gy'=Vpydw×Bj×1000/3600×γpy×(273+tpy)/273×P0/P,304.968,314.716

4,空预器出口烟气含湿量,d',,d'=G'×1000/(Gy'-G'),55.180,64.638

5,烟气中水蒸汽的露点温度,tldH2O,℃,由d'查表得,42.03,44.8

6,折算灰分,AS,%/Mcal,"AS=1000×Aar/Qar,net,p",10.332,9.520

,,,%/MJ,,2.471,2.277

7,折算硫分,SS,%/Mcal,"AS=1000×Sar/Qar,net,p",0.147,0.118

,,,%/MJ,,0.035,0.028

8,烟气露点温度(清华公式),tld,℃,tld=tldH2O+208×(SS)1/3/(4.396×αfh×AS),48.99,51.83

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