脫硫計算公式大全.doc

煙氣量計算序號名 稱符號單位計算公式或數(shù)值來源一煙氣量計算1理論空氣量V0Nm3/kg0.0889(Car+0.375Sar)+0.265Har-0.0333Oar2燃燒產物理論體積Vy0Nm3/kgVN20+VRO20+VH2O01)氮氣VN20Nm3/kg0.79V0+0.008Nar2)二氧化物VRO20Nm3/kg0.01866(Car+0.375Sar)3)水蒸汽VH2O0Nm3/kg0.111Har+0.0124Mar+0.0161V03燃燒產物實際體積VyNm3/kgVy0+0.0161(alfa-1)V0+(alfa-1)V04干煙氣量VgyNm3/kgVRO20+VN20+(alfa-1)V0煙氣含氧量和含濕量計算1)煙氣中的水分VH2ONm3/kgVH2O0+0.0161(alfa-1)V02)煙氣中的氧量VO2Nm3/kg0.21(alfa-1)V03)干煙氣中含氧量ngo2%VO2/Vgy4)濕煙氣中含氧量nsho2%VO2/Vy5)濕煙氣中含濕量nH2O%VH20/Vy6)濕煙氣中CO2含量nshCO2%0.01866Car/Vy7)干煙氣中CO2含量ngCO2%0.01866Car/Vgy8)濕煙氣中SO2含量nshSO2%0.01866*0.375Sar/Vy9)干煙氣中SO2含量ngSO2%0.01866*0.375Sar/Vgy10)濕煙氣中N2含量nshN2%(0.79alfaV0+0.008Nar)/Vy11)干煙氣中N2含量ngN2%(0.79alfaV0+0.008Nar)/Vgy6總燃燒產物實際濕體積VtshyNm3/hVy*Bj*10007總燃燒產物實際干體積VtgyNm3/hVgy*Bj*10008總燃燒產物6%O2干體積Vtgy-O2Nm3/hVtgy*(21-ngo2)/(21-6)煙氣含硫量及脫硫量計算1脫硫進口SO2量Mkg/hBj*1000*Sy/100*0.7*64/22.41kmol/hM/642脫硫進口SO2實際濃度Cso2mg/Nm3M/Vtshy（標態(tài)，干基，6%O2）ppmCso2*22.41/643要求脫硫量Mskg/hM*n/100kmol/hMs/64吸收劑消耗量計算1石灰石(CaCO3)理論消耗量M3kmol/hMs/64*(Ca/S)kg/hM3*M12石灰石(CaCO3)實際消耗量M3kg/hM3*M1/(P/100)t/h脫硫產物計算1CaSO4.2H2O生成量M4t/hMs/64*M10/10003脫硫產物中飛灰含量M5t/hm2*2/3引風機出口飛灰總量m2t/hVtgy-o2*mh4未反應的CaCO3M6t/hM3/(ca/s)*(ca/s)-1)5CaCO3帶入的雜質M7t/hM3*(1-P/100)6脫硫產物總量M8t/hM4+M5+M6+M77皮帶機出口石膏產量M9t/hM8/0.98石膏純度n1%M4/M89總的脫硫產物量 M8t/hM810皮帶機出口的石膏總產量 M9t/hM911年石膏生成量t/年M9*H1)1kg水蒸發(fā)需要熱量:mshkj/kg(50-10)*4.18+2510脫硫反應熱蒸發(fā)水量(CaCO3+SO2+1/2O2+H2O-CaSO4.2H2O+339kJ/mol)msh1t/hMs/64*339/msh2)煙氣降溫蒸發(fā)水量(未計放熱損失)熱交換器放熱端: 126-t 吸熱端: 50-85煙氣比熱kcal/Nm3.100kcal/Nm3.200i1kcal/Nm3.插值法: tpyi2插值法求85比熱t(yī)t=126-i2*(85-50)/i1i3kcal/Nm3.插值法: t塔內煙氣放熱量Q1kJ/hV * i3*4.18*(t-50)塔內煙氣放熱蒸發(fā)水量msh2t/hQ1/msh3)單塔蒸發(fā)水量Mwet/hmsh1+msh2單塔蒸發(fā)水汽體積VweNm3/hMwe/18*106*22.4/10002脫硫耗水量1)脫硫結晶水Mgyct/hM4/M10*(2*18)2)石膏表面水Mgyst/hM9*0.13)FGD廢水Mwwt/h(Bj*0.063%*1000+(Mgyc+Mgys+Mwe)*1000*0.000018-Vtgy*0.4*0.000001-M9*1000*0.01%)/0.02/10004)脫硫蒸發(fā)水量Mwet/h5)清潔沖洗水Mgywt/h估計6)泵與風機冷卻用水Mwqt/h估計7）單套脫硫裝置耗水量Mwt/hMgyc+Mgys+Mww+Mwe+Mgyw+Mwq8）總的脫硫裝置耗水量Mwt/hn*Mw氧化空氣量計算1需氧量Vo2kg/hSO2-1/2O2kmol/hVo2/322需空氣量VkNm3/hVo2/32*22.41/0.21七主要參數(shù)匯總四臺爐的數(shù)據(jù)1吸收塔進口煙氣量VNm3/h2吸收塔出口煙氣量VNm3/hVtshy+Vk-Vo2+Vwe-Vso23脫水機出口石膏M9t/h含水10%4旋流站出口石膏漿液量M11t/hM8/0.5(含水50%)5石膏旋流站出口回流量M12t/hM13-M11-Mww(不包括廢水)6吸收塔排出漿液量M13t/hM8/0.15(含水85%)7石灰石粉耗量M3t/h8工藝水量Mwt/h包括冷卻水等9FGD廢水Mwwt/h八主要設備選擇1吸收塔煙氣流速m/s取值煙氣量Qm3/hV*(273+50)/273計算直徑Dm（4*Q/3.14/3600)0.5液氣接觸時間Ss取值吸收塔高度H