大气污染控制工程 课后习题答案2

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1、第二章燃烧与大气污染2.1解：1kg燃油含：重量（g）摩尔数（g）需氧数（g）C85571.2571.25H113－2.555.2527.625S100.31250.3125H2O22.51.250N元素忽略。1）理论需氧量71.25+27.625+0.3125=99.1875mol/kg设干空气O2：N2体积比为1：3.78，则理论空气量99.1875×4.78=474.12mol/kg重油。即474.12×22.4/1000=10.62m3N/kg重油。烟气组成为CO271.25mol，H2O55.25+11.25=56.50mol，SO20.1325mol，N23

2、.78×99.1875=374.93mol。理论烟气量71.25+56.50+0.3125+374.93=502.99mol/kg重油。即502.99×22.4/1000=11.27m3N/kg重油。2）干烟气量为502.99－56.50=446.49mol/kg重油。SO2百分比浓度为，空气燃烧时CO2存在最大浓度。3）过剩空气为10%时，所需空气量为1.1×10.62=11.68m3N/kg重油，产生烟气量为11.267+0.1×10.62=12.33m3N/kg重油。2.2解：相对于碳元素作如下计算：%（质量）mol/100g煤mol/mol碳C65.75.475

3、1H3.23.20.584S1.70.0530.010O2.30.1440.026灰分18.13.306g/mol碳水分9.01.644g/mol碳故煤的组成为CH0.584S0.010O0.026，燃料的摩尔质量（包括灰分和水分）为。燃烧方程式为有问题n=1+0.584/4+0.010－0.013/2=1.1495otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary

4、.Startingin1939servedasrecorderoftheWestNorthOrganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommit

5、teeSecretary,Ministersand1）理论空气量；SO2在湿烟气中的浓度为2）产生灰分的量为烟气量（1+0.292+0.010+3.78×1.1495+1.644/18）×1000/18.26×22.4×10－3=6.826m3/kg灰分浓度为mg/m3=2.12×104mg/m33）需石灰石/t煤后面的计算过程是正确的，答案有些出入。2.3解：按燃烧1kg煤计算重量（g）摩尔数（mol）需氧数（mol）C79566.2566.25H31.12515.56257.78S60.18750.1875H2O52.8752.940设干空气中N2：O2体积比为3.

6、78：1，所需理论空气量为4.78×（66.25+7.78+0.1875）=354.76mol/kg煤。理论烟气量CO266.25mol，SO20.1875mol，H2O15.5625+2.94=18.50molN2总计66.25+`8.50+0.1875+280.54=365.48mol/kg煤实际烟气量365.48+0.2×354.76=436.43mol/kg煤，SO2浓度为。2.4解：取1mol煤气计算H2S0.002mol耗氧量0.003molCO20.05mol0CO0.285mol0.143molH2（0.13-0.004）mol0.063molCH40.

7、007mol0.014mol共需O20.003+0.143+0.063+0.014=0.223mol。设干空气中N2：O2体积比为3.78：1，则理论干空气量为0.223×（3.78+1）=1.066mol。取，则实际干空气1.2×1.066mol=1.279mol。otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Starting