双碱液法脱硫计算公式

烟气量计算序号名称符号单位计算公式或数值来源一烟气量计算1理论空气量V0Nm3/kg0.0889(Car+0.375Sar)+0.265Har-0.0333Oar2燃烧产物理论体积Vy0Nm3/kgVN20+VRO20+VH2O01)氮气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燃烧产物实际体积Vy'Nm3/kgVy0+0.0161(alfa'-1)V0+(alfa'-1)V04干烟气量Vgy'Nm3/kgVRO20+VN20+(alfa'-1)V0烟气含氧量和含湿量计算1)烟气中的水分VH2O'Nm3/kgVH2O0+0.0161(alfa'-1)V02)烟气中的氧量VO2'Nm3/kg0.21(alfa'-1)V03)干烟气中含氧量ngo2'%VO2'/Vgy'4)湿烟气中含氧量nsho2'%VO2'/Vy'5)湿烟气中含湿量nH2O'%VH20'/Vy'6)湿烟气中CO2含量nshCO2'%0.01866Car/Vy'7)干烟气中CO2含量ngCO2'%0.01866Car/Vgy'8)湿烟气中SO2含量nshSO2'%0.01866*0.375Sar/Vy'9)干烟气中SO2含量ngSO2'%0.01866*0.375Sar/Vgy'10)湿烟气中N2含量nshN2'%(0.79alfa'V0+0.008Nar)/Vy'11)干烟气中N2含量ngN2'%(0.79alfa'V0+0.008Nar)/Vgy'6总燃烧产物实际湿体积VtshyNm3/hVy'*Bj*10007总燃烧产物实际干体积VtgyNm3/hVgy'*Bj*10008总燃烧产物6%O2干体积Vtgy-O2Nm3/hVtgy*(21-ngo2')/(21-6)烟气含硫量及脱硫量计算1脱硫进口SO2量Mkg/hBj*1000*Sy/100*0.7*64/22.41kmol/hM/642脱硫进口SO2实际浓度Cso2mg/Nm3M/Vtshy（标态，干基，6%O2）ppmCso2*22.41/643要求脱硫量Mskg/hM*η*n/100kmol/hMs/64吸收剂消耗量计算1石灰石(CaCO3)理论消耗量M3kmol/hMs/64*(Ca/S)kg/hM3*M12石灰石(CaCO3)实际消耗量M3'kg/hM3*M1/(P/100)t/h脱硫产物计算1CaSO4.2H2O生成量M4t/hMs/64*M10/10003脱硫产物中飞灰含量M5t/hm2*2/3引风机出口飞灰总量m2t/hVtgy-o2*mh4未反应的CaCO3M6t/hM3/(ca/s)*((ca/s)-1))5CaCO3带入的杂质M7t/hM3'*(1-P/100)6脱硫产物总量M8t/hM4+M5+M6+M77皮带机出口石膏产量M9t/hM8/0.98石膏纯度n1%M4/M89总的脱硫产物量M8't/hM810皮带机出口的石膏总产量M9't/hM911年石膏生成量t/年M9'*H1)1kg水蒸发需要热量:mshkj/kg(50-10)*4.18+2510脱硫反应热蒸发水量(CaCO3+SO2+1/2O2+H2O----CaSO4.2H2O+339kJ/mol)msh1t/hMs/64*339/msh2)烟气降温蒸发水量(未计放热损失)热交换器放热端:126------t吸热端:50----85烟气比热kcal/Nm3.℃100℃kcal/Nm3.℃200℃i1kcal/Nm3.℃插值法:tpyi2插值法求85℃比热t℃t=126-i2*(85-50)/i1i3kcal/Nm3.℃插值法:t塔内烟气放热量Q1kJ/hV'*i3*4.18*(t-50)塔内烟气放热蒸发水量msh2t/hQ1/msh3)单塔蒸发水量Mwet/hmsh1+msh2单塔蒸发水汽体积VweNm3/hMwe/18*106*22.4/10002脱硫耗水量1)脱硫结晶水Mgyct/hM4/M10*(2*18)2)石膏表面水Mgyst/hM9*0.13)FGD废水Mwwt/h(Bj*0.063%*1000+(Mgyc+Mgys+Mwe)*1000*0.000018-Vtgy*0.4*0.000001-M9*1000*0.01%)/0.02/10004)脱硫蒸发水量Mwet/h5)清洁冲洗水Mgywt/h估计6)泵与风机冷却用水Mwqt/h估计7）单套脱硫装置耗水量Mwt/hMgyc+Mgys+Mww+Mwe+Mgyw+Mwq8）总的脱硫装置耗水量Mw't/hn*Mw氧化空气量计算1需氧量Vo2kg/hSO2---1/2O2kmol/hVo2/322需空气量VkNm3/hVo2/32*22.41/0.21七主要参数汇总四台炉的数据1吸收塔进口烟气量V'Nm3/h2吸收塔出口烟气量VNm3/hVtshy+Vk-Vo2+Vwe-Vso23脱水机出口石膏M9t/h含水10%4旋流站出口石膏浆液量M11t/hM8/0.5(含水50%)5石膏旋流站出口回流量M12t/hM13-M11-Mww(不包括废水)6吸收塔排出浆液量M13t/hM8/0.15(含水85%)7石灰石粉耗量M3't/h8工艺水量Mwt/h包括冷却水等9FGD废水Mwwt/h八主要设备选择1吸收塔烟气流速νm/s取值烟气量Qm3/hV*(273+50)/273计算直径Dm（4*Q/3.14/ν/3600)0.5液气接触时间Ss取值吸收塔高度Hmν*S液气比L/G取值浆液循环量Qcm3/h(L/G)*V/1000浆液停留时间Tmin取值吸收塔浆池容积V1m3Qc*T/602石灰石粉仓容积m3按7天储量：M3'×7×24/0.93石灰石浆池容积m3按4小时储量：M3'×4/0.3/1.219