抽凝机组原则性热力系统计算

1、1.1.汽汽轮轮机机型型式式和和技技术术数数据据型号C15-8.83/0.98额定功率(kW)P15000蒸汽初参数（1）压力(Mpa)p08.83（2）温度（）t0535（3）焓值（kj/kg）h03475额定抽气量（t/h）De0额定抽气压力（Mpa）pe0.98额定抽气温度（）te296.9凝结水回水焓值(kj/kg)hr237额定排气压力（kpa）pc4.62.2.回回热热系系统统参参数数项目回热抽汽级数一二加热器编号GJ2GJ1抽汽压力（Mpa）2.2930.98抽汽温度（）385.9296.94.4.计计算算选选用用数数据据锅炉排污量Dbl0.05Db热电厂内汽水损失Dlo0.03

2、Db锅炉出口过热蒸汽量DbDb对外供热凝结水回水率0凝结水回水温度th80锅炉效率b0.85汽轮机机械效率m0.985发电机效率g0.97换热器效率h0.98热电厂内管道效率p0.96轴封用汽量Dsg0.01Do汽轮机进汽量Do5.5.汽汽轮轮机机组组汽汽水水综综合合表表项目各计算点12加热器编号GJ2GJ2GJ1GJ1抽汽压力pe(Mpa)2.290.98抽汽温度te()385.90296.90抽汽焓值he(kJ/kg)3205.603044.30抽气压损p（%）8.008.00加热器处汽压pj(Mpa)2.110.90pj压力下饱和水温tj()215.14175.39pj压力下饱和水焓hj

3、(kJ/kg)921.10742.90抽气放热量qe=he-hj(kJ/kg)2284.502301.40加热器端差t()5.005.00加热器出口水温tw=tj-t()210.14170.39加热器出口水焓hw(kJ/kg)903.10727.70加热器进口水温tw()170.39158.00加热器进口水焓hw(kJ/kg)727.70667.24给水焓升hw=hw-hw(kJ/kg)175.4060.466.6.汽汽轮轮机机耗耗气气量量近近似似计计算算汽轮机功率汽轮机进气初焓汽轮机抽气焓P（kW)ho（kj/kg)he（kj/kg)1500034753044.30供热抽气量汽轮机汽耗量供热

4、抽气占汽轮机汽耗量份额DeDe057732.7694407.7.锅锅炉炉排排污污系系统统计计算算汽轮机总汽耗量D01.01D0轴封用汽份额sg0.01汽轮机总汽耗量份额01.01( )0()3600eecp cmgocD hhP D hhhha h h- =+-项目锅炉蒸发量Db1.04124D0锅炉蒸发量份额b1.04124全厂厂内汽水损失份额100.03124锅炉排污量Dbl0.05206D0锅炉排污量份额bl0.052062锅炉汽包压力饱和水焓Pd（Mpa）hbl（kj/kg)11.41466.2排排污污扩扩容容器器扩容压力扩容压力下饱和水焓值排污扩容器二次蒸汽焓值Pbl(Mpa)hbl

5、(Kj/kg)hf(Kj/kg)0.7697.322763.29热热平平衡衡式式blhblh=fhf+blhbl物物质质平平衡衡式式bl=bl-fblhblh0.0520621466.20.98对对外外供供热热凝凝结结水水损损失失占占汽汽轮轮机机耗耗气气量量的的份份额额凝结水损失份额DeDow057732.769440化化学学补补充充水水量量排污水损失量热电厂内汽水损失量对外供热凝结水损失量Dbl=bl*D0D10=lo*Db=lo*b*DoDow=owDo0.033430.0325254220锅锅炉炉给给水水量量锅炉蒸发量份额排污量份额锅炉给水份额bblfw1.041240.0520621.

6、093302排排污污水水冷冷却却器器的的计计算算化学补充水温度化学补充水焓值排污水冷却器端差tma（）hma（kj/kg）75314.0257热平衡方程式整理得高高压压加加热热器器GJ2GJ2GJ1GJ1抽气份额10.0856549550.02254055抽气放热量qe2284.502301.40给水焓升hw175.4060.46给水份额 fw1.0933021.093302换热器效率h0.980.98除除氧氧器器计计算算物物质质平平衡衡fw=ma+(1+2)+f+(3+4+c+sg)+d+r给水份额fw1.093302给水份额ma0.065950.90052高加抽气冷却水份额1+20.108

7、195506排污二次蒸汽份额f0.01864低加（含轴封）份额3+4+c+sg0.52099-d加热用蒸汽份额d0.0773冷却水回水份额r0热热平平衡衡fwhd=(mahma+(1+2)*h2+fhf+(3+4+c+sg)hw4+dhd+rhr)h给水焓值 hd（kj/kg)667.24()()blblblhmamamahhhhaha-=-*7*4.1868* blblhmamamablmablhhhhahaaaah+= +补水焓值 hma（kj/kg)334.94高加冷凝水 h2（kj/kg)742.90二次蒸汽焓值 hf（kj/kg)2763.29低加出水焓值 hw4（kj/kg)246

8、.60加热蒸汽焓值 hd（kj/kg)3044.30凝结水焓值 hr（kj/kg)0求得d0.07733+4+sg+c0.82317低低压压加加热热器器组组热平衡式一（包括二级低加）(3 3+4 4+sgsg+c)*c)*h hc c - -c ch hc c-(-(3 3+4 4)h)h4 4-sgsgh hsgsg=(=(（3 3（h h3 3-h-h3 3)+)+4 4(h(h4 4-h-h4 4)+sg(h)+sg(h0 0-h-hsgsg)h h热平衡式一（不包括二级低加）(3 3+4 4+sgsg+c)*c)*h hc c - -c ch hc c-(-(3 3+4 4)h)h4

9、4-sgsgh hsgsg=(=(4 4(h(h4 4-h-h4 4)+sg(h)+sg(h0 0-h-hsgsg)h h二级低加出水焓值 hc431.20一级低加出水焓值 hc246.60冷却水焓值 hc131.61二级低加抽汽焓值 h32738.50二级低加冷凝水焓值 h3449.24一级低加抽汽焓值 h42519.50一级低加冷凝水焓值 h4251.43轴封抽气焓值 h03405.5轴封凝结水焓值 hsg251.09汽汽轮轮机机汽汽耗耗量量及及各各项项汽汽水水流流量量计计算算（1）做功不足系数计算GJ2抽气系数Y10.7607035GJ1抽气系数Y20.617427607LHE2抽气系数

10、Y30.345798543LHE1抽气系数Y40.151270208各级抽气份额及做功不足系数乘积1Y10.065158024（2+d+e)Y20.0616725613Y30.0229536114Y40.0035256121221244/ () ()fw ahma mafffwmafrwr rd dwhhhhhhhhahaaaaaaaaaaaa-+-+-= -(2)汽轮机纯凝工况时的汽耗量Dco50202.40821(3)有回热抽气汽轮机汽耗量D0D059292.53544核算汽轮机耗气量误差2.63%各各项项抽抽汽汽和和汽汽水水流流量量计计算算锅炉排污bl0.052062锅炉排污Dbl（kg

11、/h)排污扩容蒸汽f0.01864排污扩容蒸汽Df（kg/h)排污水bl0.03343排污水Dbl（kg/h)厂内汽水损失100.03124厂内汽水损失D10（kg/h)轴封用汽量sg0.01轴封用汽量Dsg（kg/h)化学补充水量ma0.06595化学补充水量Dma（kg/h)锅炉给水量fw1.093302锅炉给水量Dfw（kg/h)汽轮机总汽耗量01.01汽轮机总汽耗量D0（kg/h)锅炉蒸发量b1.04124锅炉蒸发量Db（kg/h)一级抽汽量10.085654955一级抽汽量D1（kg/h)二级抽汽量2+d+e0.0999二级抽汽量D2（kg/h)三级抽汽量30.0664三级抽汽量D3

12、（kg/h)四级抽汽量40.0233四级抽汽量D4（kg/h)凝汽器凝结水量c0.72349凝汽器凝结水量Dc（kg/h)汽汽轮轮机机功功率率核核算算P1363.1245159P2676.9962993P3769.3183646P4350.4429Pc12817.3453314977.22741计算误差-0.15%热热电电厂厂经经济济指指标标计计算算03600()cocmgNDhhh h= -0 01c iiDDYa= -( )0(1)1()3600nmgnDhhPh h- - =（1）热耗量(kj/h）232179226.3（2）热耗率(kJ/(kW.h)15478.61508（3）煤耗量(

13、kg/h)17859.94048（4）煤耗率(Gj/h)1.190662699（5）发电标准煤耗率(kg/h)0.53（6）热效率0.23（7）供电标准煤耗率0.607011654设备利用小时数6500(8)全年发电量（kw.h/a)195000000(9)全年耗煤量(kg/a)232179226.3*()*()(/)bbfwblblfwbDhhDhhQkJhh-+-=Qq p =. b ar netQBQ=Bb P=.0.12329310ar nete ebQbh=36003600eP Qqh=1e h ab b f =-3.3.锅锅炉炉主主要要参参数数主蒸汽出口压力（Mpa）pb9.8汽包

14、压力（Mpa）pd11.411.4过热蒸汽温度（）tb540过热蒸汽焓(kj/kg)hb3475锅炉给水温度（）tfw210.1锅炉给水焓(kj/kg)hfw903.1三四LHE2LHE10.1450.026132.965.80.050.03回热抽汽级数各计算点345c除氧器LHE2LHE2LHE1LHE10.1450.0260.0046132.9065.803044.32738.502519.502349.28.008.000.130.02158107.1460.07667.24449.24251.432377.062289.262268.075.005.00102.1455.07431.2

15、0246.6055.0731.4431.44246.60131.61131.608184.60114.99汽轮机实际终焓汽轮机机械效率发电机效率调整抽气量hc（kj/kg)mgDe（kg/h）2349.20.9850.970锅炉轴封用汽按0.01D0供热抽气占汽轮机汽耗量份额e07.7.锅锅炉炉排排污污系系统统计计算算( )0()3600eecp cmgocD hhP D hhhha h h- =+-汽水损失锅炉蒸发量的0.03排污率按0.05二次蒸汽份额排污水份额fbl0.018640.033430凝结水回水量r0轴封用汽量化学水补充水量化学水补充份额Dsg=0.01D0Dmama00.06

16、5950.06595blblhblblf fblhhhhahaa- = -冷却器加热后的给水温度相应焓值排污水焓值排污水温度kj/kghbl(kj/kg)tbl-7hbl-7*4.1868460.805901487fw=ma+(1+2)+f+(3+4+c+sg)+d+rfwhd=(mahma+(1+2)*h2+fhf+(3+4+c+sg)hw4+dhd+rhr)h()()blblblhmamamahhhhaha-=-*7*4.1868* blblhmamamablmablhhhhahaaaah+= +求得30.066440.0233c0.72349各份额相加1.008710 0. .8 87

17、7% %轴封冷凝水温度取60，对应焓值为251.09kj/kg(3 3+4 4+sgsg+c)*c)*h hc c - -c ch hc c-(-(3 3+4 4)h)h4 4-sgsgh hsgsg=(=(（3 3（h h3 3-h-h3 3)+)+4 4(h(h4 4-h-h4 4)+sg(h)+sg(h0 0-h-hsgsg)h h(3 3+4 4+sgsg+c)*c)*h hc c - -c ch hc c-(-(3 3+4 4)h)h4 4-sgsgh hsgsg=(=(4 4(h(h4 4-h-h4 4)+sg(h)+sg(h0 0-h-hsgsg)h h1221244/ () (

18、)fw ahma mafffwmafrwr rd dwhhhhhhhhahaaaaaaaaaaaa-+-+-= -kg/h3086.91105.01981.91852.1592.93910.464824.659885.561737.85078.75922.53935.81381.942897.403600()cocmgNDhhh h= -0 01c iiDDYa= -( )0(1)1()3600nmgnDhhPh h- - =*()*()(/)bbfwblblfwbDhhDhhQkJhh-+-=Qq p =. b ar netQBQ=Bb P=.0.12329310ar nete ebQbh=

19、36003600eP Qqh=1e h ab b f =-备注二级抽汽减压后用于除氧焓值不变考虑非调整抽气回热用气量的系数汽轮机汽耗量估算pD（kg/h)1.1557732.76944备注blblhblblf fblhhhhahaa- = -故冷却器出水口温度相应焓值tma()hma(kj/kg)80334.94按汽机厂给的(3 3+4 4+sgsg+c)*c)*h hc c - -c ch hc c-(-(3 3+4 4)h)h4 4-sgsgh hsgsg=(=(（3 3（h h3 3-h-h3 3)+)+4 4(h(h4 4-h-h4 4)+sg(h)+sg(h0 0-h-hsgsg)h

20、 h(3 3+4 4+sgsg+c)*c)*h hc c - -c ch hc c-(-(3 3+4 4)h)h4 4-sgsgh hsgsg=(=(4 4(h(h4 4-h-h4 4)+sg(h)+sg(h0 0-h-hsgsg)h h1221244/ () ()fw ahma mafffwmafrwr rd dwhhhhhhhhahaaaaaaaaaaaa-+-+-= -秸秆发热量(kj/h)13000*()*()(/)bbfwblblfwbDhhDhhQkJhh-+-=1.1.汽汽轮轮机机型型式式和和技技术术数数据据型号C15-8.83/0.98额定功率(kW)P15000蒸汽初参数（1

21、）压力(MPa)p08.83（2）温度（）t0535（3）焓值（kJ/kg）h03475额定抽汽量（t/h）De7.5额定抽汽压力（MPa）pe0.98额定抽汽温度（）te296.9对外凝结水回水焓值(kJ/kg)（80）hr334.92额定排汽压力（kPa）pc4.62.2.回回热热系系统统参参数数项目回热抽汽级数一二加热器编号GJ2GJ1抽汽压力（MPa）2.2930.98抽汽温度（）385.9296.94.4.计计算算选选用用数数据据锅炉排污量Dbl0.05Db热电厂内汽水损失Dlo0.03Db锅炉出口过热蒸汽量DbDb对外供热凝结水回水率0凝结水回水温度th80锅炉效率b0.85汽轮机

22、机械效率m0.985发电机效率g0.97换热器效率h0.98热电厂内管道效率p0.96轴封用汽量Dsg0.01Do汽轮机进汽量Do5.5.汽汽轮轮机机组组汽汽水水综综合合表表项目各计算点12加热器编号GJ2GJ2GJ1GJ1抽汽压力pe(Mpa)2.290.98抽汽温度te()385.90296.90抽汽焓值he(kJ/kg)3205.603044.30抽汽压损p（%）8.008.00加热器处汽压pj(Mpa)2.110.90pj压力下饱和水温tj()214.85175.36pj压力下饱和水焓hj(kJ/kg)899.53734.20抽汽放热量qe=he-hj(kJ/kg)2306.07231

23、0.10加热器端差t()5.005.00加热器出口水温tw=tj-t()209.85170.36加热器出口水焓hw(kJ/kg)878.60713.26加热器进口水温tw()170.36158.00加热器进口水焓hw(kJ/kg)713.26670.40给水焓升hw=hw-hw(kJ/kg)165.3442.866.6.汽汽轮轮机机耗耗汽汽量量近近似似计计算算汽轮机功率汽轮机进汽初焓汽轮机抽汽焓P（kW)ho（kJ/kg)he（kJ/kg)1500034753044.30供热抽汽量汽轮机汽耗量供热抽汽占汽轮机汽耗量份额DeDe750063058.082550.1189379657.7.锅锅炉炉

24、排排污污系系统统计计算算汽轮机总汽耗量D01.01D0轴封用汽份额sg0.01汽轮机总汽耗量份额01.01( )0()3600eecp cmgocD hhP D hhhha h h- =+-项目锅炉蒸发量Db1.04124D0锅炉蒸发量份额b1.04124全厂厂内汽水损失份额100.03124锅炉排污量Dbl0.05206D0锅炉排污量份额bl0.052062锅炉汽包压力饱和水焓Pd（MPa）hbl（kJ/kg)11.41471.5排排污污扩扩容容器器扩容压力扩容压力下饱和水焓值排污扩容器二次蒸汽焓值Pbl(MPa)hbl(kJ/kg)hf(kJ/kg)0.7697.322763.29热热平平

25、衡衡式式blhblh=fhf+blhbl物物质质平平衡衡式式bl=bl-fblhblh0.0520621471.50.98对对外外供供热热凝凝结结水水损损失失占占汽汽轮轮机机耗耗气气量量的的份份额额凝结水损失份额DeDow750063058.082550.118937965化化学学补补充充水水量量排污水损失量热电厂内汽水损失量对外供热凝结水损失量Dbl=bl*D0D10=lo*Db=lo*b*DoDow=owDo0.033290.0325254220.118937965锅锅炉炉给给水水量量锅炉蒸发量份额排污量份额锅炉给水份额bblfw1.041240.0520621.093302排排污污水水冷

26、冷却却器器的的计计算算化学补充水温度化学补充水焓值排污水冷却器端差tma（）hma（kJ/kg）2083.747热平衡方程式整理得高高压压加加热热器器GJ2GJ2GJ1GJ1抽汽份额10.0799855770.014858391抽汽放热量qe2306.072310.10给水焓升hw165.3442.86锅炉给水份额 fw1.0933021.093302换热器效率h0.980.98除除氧氧器器计计算算物物质质平平衡衡fw=ma+(1+2)+f+(3+4+c+sg)+d+r锅炉给水份额fw1.093302化学补水份额ma0.184760.79493高加抽汽凝结水份额1+20.094843967排污

27、二次蒸汽份额f0.01877低加（含轴封）份额3+4+c+sgC132-d加热用蒸汽份额d0.0974对外凝结水回水份额r0热热平平衡衡fwhd=(mahma+(1+2)*h2+fhf+(3+4+c+sg)hw4+dhd+rhr)h出口给水焓值 hd（kJ/kg)670.4()()blblblhmamamahhhhaha-=-*7*4.1868* blblhmamamablmablhhhhahaaaah+= +化学补水焓值 hma（kJ/kg)171.4362489高加凝结水 h2（kJ/kg)734.20二次蒸汽焓值 hf（kJ/kg)2763.29低加来水焓值 hw4（kJ/kg)230.

28、55加热蒸汽焓值 hd（kJ/kg)3044.30对外凝结水焓值 hr（kJ/kg)0求得d0.09743+4+sg+c0.69756低低压压加加热热器器组组热平衡式一（包括二级低加）(3 3+4 4+sgsg+c)*c)*h hc c - -c ch hc c-(-(3 3+4 4)h)h4 4-sgsgh hsgsg=(=(（3 3（h h3 3-h-h3 3)+)+4 4(h(h4 4-h-h4 4)+sg(h)+sg(h0 0-h-hsgsg)h h热平衡式一（不包括二级低加）(3 3+4 4+sgsg+c)*c)*h hc c - -c ch hc c-(-(3 3+4 4)h)h4

29、 4-sgsgh hsgsg=(=(4 4(h(h4 4-h-h4 4)+sg(h)+sg(h0 0-h-hsgsg)h h二级低加出水焓值 hc427.64一级低加出水焓值 hc230.55冷却水焓值 hc131.61二级低加抽汽焓值 h32738.50二级低加冷凝水焓值 h3448.57一级低加抽汽焓值 h42519.50一级低加冷凝水焓值 h4251.48轴封抽汽焓值 h03266.5轴封凝结水焓值 hsg251.09汽汽轮轮机机汽汽耗耗量量及及各各项项汽汽水水流流量量计计算算（1）做功不足系数计算GJ2抽汽系数Y10.760433316GJ1抽汽系数Y20.617208311LHE2抽

30、汽系数Y30.345675724LHE1抽汽系数Y40.15121648各级抽汽份额及做功不足系数乘积1Y10.060823697（2+d+e)Y20.1426802213Y30.0207539474Y40.0020058011221244/ () ()fw ahma mafffwmafrwr rd dwhhhhhhhhahaaaaaaaaaaaa-+-+-= -(2)汽轮机纯凝工况时的汽耗量Dco50202.40821(3)有回热抽汽汽轮机汽耗量D0D064883.09515核算汽轮机耗汽量误差2.81%各各项项抽抽汽汽和和汽汽水水流流量量计计算算锅炉排污bl0.052062锅炉排污Dbl排

31、污扩容蒸汽f0.01877排污扩容蒸汽Df排污水bl0.03329排污水Dbl厂内汽水损失100.03124厂内汽水损失D10轴封用汽量sg0.01轴封用汽量Dsg化学补充水量ma0.18476化学补充水量Dma锅炉给水量fw1.093302锅炉给水量Dfw汽轮机总汽耗量01.01汽轮机总汽耗量D0锅炉蒸发量b1.04124锅炉蒸发量Db一级抽汽量10.079985577一级抽汽量D1二级抽汽量2+d+e0.2312二级抽汽量D2三级抽汽量30.0600三级抽汽量D3四级抽汽量40.0133四级抽汽量D4凝汽器凝结水量c0.61426凝汽器凝结水量Dc汽汽轮轮机机功功率率核核算算P1371.0

32、618403P21714.525319P3761.4503545P4218.2510491Pc11908.2331514973.52171计算误差-0.18%热热电电厂厂经经济济指指标标计计算算03600()cocmgNDhhh h= -0 01c iiDDYa= -( )0(1)1()3600nmgnDhhPh h- - =（1）发电热耗率(kJ/(kW.h)11566.27596（2）发电标准煤耗量(kg/(kW.h)0.483634427（3）平均耗热标准煤耗量(kg/GJ)44.86207329E(h)6.303（4）供热量(GJ/h)22.2042（5）标准煤耗量(kg/h)8182

33、.96（6）全厂热效率0.32 010( )(1)*()()fweerwhrwtp eDhhDhhhhq Pxf+-=()()29308tpetpebpqbh h= ( )5.73 1 2(0.8)hbEh=+-()( )34.12( )avavtp htp ebpbE h bh h=+ 6() *10eemarmaQD hhhhf-=-( )( )( )*()avap ehtp eBbtPE QbQ=-+0.003629308tpaPQBh+ =3.3.锅锅炉炉主主要要参参数数主蒸汽出口压力（MPa）pb9.8汽包压力（MPa）pd11.411.4过热蒸汽温度（）tb540过热蒸汽焓(kJ/

34、kg)hb3475.4锅炉给水温度（）tfw210.1锅炉给水焓(kJ/kg)hfw879.6三四 五 CYLHE2LHE10.980.1450.026296.9132.965.80.050.03回热抽汽级数各计算点345c除氧器LHE2LHE2LHE1LHE10.1450.0260.0046132.9065.803044.32738.502519.502349.28.008.000.130.02158107.1460.07670.4448.57251.482373.92289.932268.025.005.00102.1455.07427.64230.5555.0731.4431.44230

35、.55131.61131.608197.0998.94汽轮机实际终焓汽轮机机械效率发电机效率调整抽汽量hc（kJ/kg)mgDe（kg/h）2349.20.9850.977500汽机轴封用汽按0.01D0供热抽汽占汽轮机汽耗量份额e0.1189379657.7.锅锅炉炉排排污污系系统统计计算算( )0()3600eecp cmgocD hhP D hhhha h h- =+-汽水损失锅炉蒸发量的0.03排污率按0.05二次蒸汽份额排污水份额fbl0.018770.03329凝结水回水量r0轴封用汽量化学水补充水量化学水补充份额Dsg=0.01D0Dmama00.184760.18476blbl

36、hblblf fblhhhhahaa- = -冷却器加热后的给水温度相应焓值排污水焓值排污水温度kJ/kghbl(kJ/kg)tbl-7hbl-7*4.1868200.743848947.94684458fw=ma+(1+2)+f+(3+4+c+sg)+d+rfwhd=(mahma+(1+2)*h2+fhf+(3+4+c+sg)hw4+dhd+rhr)h()()blblblhmamamahhhhaha-=-*7*4.1868* blblhmamamablmablhhhhahaaaah+= +求得30.060040.0133c0.61426各份额相加1.008710.87%0.87%轴封冷凝水温度取60，对应焓值为251.09kJ/kg(3 3+4 4+sgsg