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CFB锅炉效率计算(ASMEPTC4.1),,,,,,,

,,,,,,,,

项目,符号,单位,数据来源,试验数据,,,

一.试验煤质资料,,,,,,,

收到基碳,Car,%,化验值,34.70,,,

收到基氢,Har,%,化验值,2.41,,,

收到基氧,Oar,%,化验值,10.72,,,

收到基氮,Nar,%,化验值,0.94,,,

收到基硫,Sar,%,化验值,2.04,72.06666667,,

全水分,Mar,%,化验值,31.10,,,

收到基灰分,Aar,%,,18.09,100.00,,

收到基高位发热量,HHV,kJ/kg,化验值,14690.00,,,

收到基低位发热量,HLV,kJ/kg,化验值,12110,,,

实际燃料消耗量,B,kg/s,记测值,72.07,1号,t/h,75.1

二.试验石灰石成分,,,,,2号,t/h,81.2

碳酸钙,CaCO3,%,化验值,91.30,3号,t/h,78.4

碳酸镁,MgCO3,%,化验值,0.00,4号,t/h,84.8

水分,Ms,%,化验值,0.19,,,319.50

其它,As,%,化验值,8.25,210.00,,23.33

实际石灰石耗量,G,kg/s,记测值,6.48,,,296.17

三.钙硫摩尔比,,,,,,,

SO2转换率,k,%,按90取定,90.00,,,

钙硫摩尔比,Ca/S,,32×CaCO3×G/(100×B×k/100×Sar),1.43,,,

四.灰渣量,,,,,,,

脱硫效率(假设值),ηs,%,先假定90,再循环计算。,82.85,1.00,,

脱硫效率(计算值),ηs,%,,83.54,,,

每公斤煤燃烧脱硫生成的CaSO4,ACaSO4,kg/kg,4.246×ηs/100×Sar×k/100,0.06,,,

未反应的氧化钙,ACaO,kg/kg,1.75×k/100×Sar×[(Ca/S)-ηs/100],0.019361,,,

石灰石中杂质量,A´,kg/kg,3.125×(1-CaCO3/100-Ms/100)×k/100×Sar×(Ca/S)/CaCO3,0.0077,0.0917,,

灰渣量,A,kg/kg,Aar+ACaSO4+ACaO+A´,0.2726,,,

五.灰渣可燃物,,,,,,,

飞灰比率,rf,%,待定(47%),53.00,,,

炉渣比率,rs,%,待定(53%),47.00,,,

沉降灰比率,,%,,,,,

飞灰可燃物,Cf,%,化验值,0.10,,,

炉渣可燃物,Cs,%,化验值,0.92,,,

沉降灰可燃物,,%,,0.00,,,

灰渣平均可燃物,Cav,%,rs×Cs/100+rf×Cf/100,0.49,,,

干灰渣量,Wdp,kg/kg,A×100/(100-Cav),0.2739,71061.81,,

实际烧掉的碳,Cb,kg/kg,Car-Wdp×Cav/100,34.70,,,

六.烟气特性,,,,,,,

预热器出口氧量,O2,%,实测值,4.21,,,

预热器出口二氧化碳,CO2,%,实测值,15.19,,,

预热器出口一氧化碳,CO,%,实测值,0.00,,,

排烟中二氧化硫浓度,"CSO2""",mg/m3,,537.00,,,

预热器出口氮,N2,%,100-O2-CO2-CO,80.60,,,

理论空气量,A´θ,kg/kg,[11.51Car+34.30×(Har-Oar/7.937)+4.335×Sar+2.159×Sar×ηs/100]/100,4.48,,,

预热器出口干烟气量,WG´,kg/kg,[(44.01×CO2+28.01×CO+32.00×O2+28.02×N2)/12.01/(CO2+CO)]×[Cb+12.01/32.07×Sar×k/100×(1-ηs/100)+(Ca/S)×12.01/32.07×Sar×k/100]/100,6.01,,,

预热器出口干空气量,WA´,kg/kg,((28.02×N2×(Cb+12.01×Sar/32.07))/(12.01*(CO2+CO))-Nar)/0.7685/100,5.75,,,

干烟气密度,γ,kg/m3,0.04299×(CO2/35.11+O2/48.28+N2/55.14+CO/55.16)×16.018,1.36,,,

七.脱硫效率,,,,,,,

每公斤煤燃烧应生成的SO2,SO2´,kg/kg,64.07/32.07×k/100×Sar/100,0.04,,,

计算二氧化硫浓度,CSO2´,mg/m3,SO2´/WG´×γ×1000000×[15/(21-O2)],8330.49,,,

排烟中二氧化硫浓度,CSO2,mg/m3,"CSO2""×15/(21-O2)×64.07/22.41",1371.60,,,

脱硫效率,ηs,%,(1-CSO2/CSO2´)×100,83.54,,,

八.大气条件,,,,,,,

大气压力,PA,kPa,实测,88.10,,,

干球温度,td,℃,实测,27.05,,,

湿球温度,tw,℃,实测,20.32,,,

相对湿度,φ,%,查表,54.40,,,

饱和蒸汽压力,Pb,Pa,611.7927+42.7809×td+1.6883×td^2+1.2079/100×td^3+6.1637/10000×td^4,3573.42,,,

空气含湿量,WmA´,kg/kg,0.622×φ/100×Pb/(1000×PA-φ/100×Pb),0.01403,,,

九.温度,,,,,,,

一次风量,Wp,kg/s,实测,85.37,85.37391667,,

二次风量,Ws,kg/s,实测,214.82,214.8175833,,

预热器进口一次风温,tp,℃,实测,67.60,,,

预热器进口二次风温,ts,℃,实测,42.50,,,

基准温度,tRA,℃,标准规定,25.00,,,

平均进口空气温度,tpj,℃,(tp*Wp+tsWs)/(Wp+Ws),49.64,,,

烟气中水分,mG,kg/kg,8.936×Har/100+WmA´×WA´+Mar/100+Ms/100×G/B,0.61,,,

排烟温度,"ν""py",℃,实测值,160.50,,,

渣温,tlz,℃,实测值,800.00,,,

烟气中水分分压力,PmG,Pa,1000×PA/{1+150×Cb/100/[mG×(CO2+CO)]},13263.67,,,

烟气中水蒸汽焓,"h""",kJ/kg,"查表(根据ν""py,PmG)或计算",2804.84,,,

基准温度下水蒸汽焓,hRV,kJ/kg,查表(根据tRA)或计算,2547.29,,,

CO2定压比热,,kj/kg.k,,0.8931,,,

O2,,kj/kg.k,,0.9222,,,

CO,,kj/kg.k,,1.0437,,,

N2,,kj/kg.k,,1.0382,,,

干烟气平均比热,CpG´,kJ/(kg.k),"查图(根据ν""py,tRA)",1.0113,,,

炉渣比热,Cplz,kJ/(kg℃),,1.1116,,,

飞灰比热,Cpfh,kJ/(kg℃),,0.8415,,,

十.锅炉效率计算,,,,,,,

未燃碳分热损失,Luc,%,33727×Wdp×Cav/HLV,0.3703,,,

干烟气带走的热损失,LG,%,"100×WG´×CpG´×(ν""py-tRA)/HLV",5.56,,,

燃料中水分引起的热损失,Lmf,%,"Mar×(h""-hRV)/HLV",0.66,,,

氢生成的水分带走的热损失,LH,%,"8.936×Har×(h""-hRV)/HLV",0.46,,,

空气中湿分带走的热损失,LmA,%,"100×WmA´×WA´×(h""-hRV)/HLV",0.17,,,

石灰石中水分带走的热损失,Ls,%,"Ms×G/B×(h""-hRV)/HLV",0.00,输入项增加项目,,

CO引起的热损失,LCO,%,23632×Cb×CO/(CO2+CO)/HLV,0.00,额定蒸汽流量(t/h),1025.00,

辐射对流热损失,LR,%,查图,0.44,实际蒸汽流量(t/h),986.76,

灰渣显热损失,Ld,%,"Wdp×[Cpfh*rf/100×(ν""py-tRA)+Cplz*rs/100×(tlz-tRA)]/HLV",1.00,,,

CaCO3煅烧热损失(此项需考证),LCaCO3,%,CaCO3×G/B×1830/HLV,1.24,,,

硫酸盐化放热(此项需考证),q,%,Sar×k/100×ηs/100×15141/HLV,-1.92,,,

未测量损失,Lw,%,设计值,0.000,,,

总热损失,L,%,Luc+LG+Lmf+LH+LmA+Ls+LCO+LR+Ld+LCaCO3-q,7.99,,,

锅炉效率,η,%,100-L,92.01,,,

十一.效率修正,,,,,,,

1.煤质资料,,,,,,,

收到基碳,Cd,%,设计值,25.44,,,

收到基氢,Hd,%,设计值,1.87,,,

收到基氧,Od,%,设计值,6.7,,,

收到基氮,Nd,%,设计值,0.61,,,

收到基硫,Sd,%,设计值,2.84,,,

全水分,Md,%,设计值,34.7,,,

收到基灰分,Ad,%,设计值,21.51,,,

收到基高位发热量,HHVd,kJ/kg,设计值,13210.00,,,

收到基低位发热量,HLVd,kJ/kg,设计值,12435.00,,,

设计燃料消耗量,Bd,kg/s,设计值,59.44,63.33333333,,

2.设计石灰石成分,,,,,,,

碳酸钙,[CaCO3]d,%,设计值,97.40,,,

碳酸镁,[MgCO3]d,%,设计值,1.00,,,

水分,Msd,%,设计值,0.23,,,

其它,Asd,%,设计值,1.32,,,

设计石灰石耗量,Gd,kg/s,设计值,7.14,,,

3.脱硫效率,,,,,,,

SO2转换率,k,%,按90取定,90.00,,,

设计计算二氧化硫浓度,,,,,,,

实际二氧化硫排放浓度,,,,,,,

每公斤煤燃烧应生成的SO2,SO2´,kg/kg,64.07/32.07×k/100×Sar/100,0.04,,,

钙硫摩尔比,(Ca/S)d,,设计值,2.00,,,

脱硫效率,ηs,%,计算值,83.54,,,

4.灰渣量,,,,,,,

每公斤煤燃烧脱硫生成的CaSO4,(ACaSO4)d,kg/kg,4.246×ηs/100×Sd×k/100,0.09,,,

未反应的氧化钙,(ACaO)d,kg/kg,1.75×k/100×Sd×[(Ca/S)d-ηs/100],0.05,,,

石灰石中杂质量,A´d,kg/kg,3.125×(1-[CaCO3]d/100-Msd/100)×k/100×Sd×(Ca/S)d,0.0039,,,

灰渣量,A°,kg/kg,Ad+(ACaSO4)d+(ACaO)d+A´d,0.362,,,

5.灰渣可燃物,,,,,,,

灰渣平均可燃物,Cav°,%,rs×Cs/100+rf×Cf/100,0.49,,,

干灰渣量,Wdpd,kg/kg,A°×100/(100-Cav°),0.364,,,

实际烧掉的碳,Cbd,kg/kg,Cd-Wdpd×Cav°/100,25.438,,,

6.空气、烟气特性,,,,,,,

预热器出口干烟气量,WG´d,kg/kg,[(44.01×CO2+28.01×CO+32.00×O2+28.02×N2)/12.01/(CO2+CO)]×[Cbd+12.01/32.07×Sd×k/100×(1-ηs/100)+(Ca/S)d×12.01/32.07×Sd×k/100]/100,4.62,,,

预热器出口干空气量,WA´d,kg/kg,{28.02×N2×[Cbd+12.01/32.07×Sd×k/100×(1-ηs/100)+(Ca/S)d×12.01/32.07×Sd×k/100]/12.01/(CO2+CO)-Nd}/0.7685/100,5.70,,,

设计空气含湿量,WmA´d,kg/kg,设计值,0.01,,,

保证基准温度,tRAd,℃,设计值,40.00,,,

预热器进口烟温,ν´,℃,实测值,317.30,,,

修正后的排烟温度,"ν""d",℃,"[tRAd×(ν´-ν""py)+ν´×(ν""py-tRA)]/(ν´-tRA)",154.85,,,

烟气中水蒸汽焓,"h""d",kJ/kg,"查表(根据ν""d,PmG)或计算",2792.69,,,

饱和水蒸汽焓,hRVd,kJ/kg,查表(根据tRAd)或计算,2572.95,,,

CO2定压比热,,kj/kg.k,,0.8906,,,

O2,,kj/kg.k,,0.9220,,,

CO,,kj/kg.k,,1.0434,,,

N2,,kj/kg.k,,1.0382,,,

干烟气平均比热,CpG´,kJ/(kg℃),,1.0109,,,

7.修正后的锅炉效率,,,,,,,

干烟气带走的热损失,LGd,%,"100×WG´d×CpG´d×(ν""d-tRAd)/HLVd",4.31,,,

燃料中水分引起的热损失,Lmfd,%,"Md×(h""d-hRVd)/HLVd",0.61,,,

氢生成的水分带走的热损失,LHd,%,"8.936×Hd×(h""d-hRVd)/HLVd",0.30,,,

空气中湿分带走的热

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