一段炉热量衡算参考-1.doc

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1、③燃料气、空气用量和烟气量的计算分别计算燃料气、空气和烟气(1045℃)的焓值(不计压力对焓的影响，三者中均含有燃气量x)，用热平衡式即可解出x及空气和烟气量。（3）模型求解①燃料气和烟气组成的计算及物料表a.燃料气和烟气组成：以100kmol燃料气为计算基准组分天然气驰放气燃料气耗O2kmol生CO2kmol生H2Okmol生N2kmol空气烟气N20.31050.98015.511721.485737.137H219.4105.8232.91155.823CH490.36021.68069.756139.51269.756139.512Ar0.1406.9902.1

2、959.25011.445COCO20.5400.37885.632C2H65.7003.99013.9657.9811.97C3H81.2400.8684.342.6043.472C4H101.5301.0716.96154.2845.355C5H120.1800.1261.0080.630.756NH30.9400.2820.21150.4230.141O2194.24625.336H2O28.735196.046∑100.000100.000100.000168.91085.254167.3110.141953.7151055.596理论消耗空气量=804.330

3、952kmol/100kmol燃料气实际消耗空气量=924.981kmol/100kmol燃料气大气压力=740mmHg=98.659kPa30℃水的饱和蒸汽压=0.043kg/cm2=4.246kPa空气带水量=28.735kmol/100kmol燃料气b.物料表物料原料气转化气燃料气空气烟气温度，K783.151095.15443.15480.151318.15压力(表)，MPa3.533.28000流量，Kmol/h5767.557522.45x9.53715x10.55596x组成mol%N20.4160.31915.51175.65069.831H21.070

4、39.7105.823CH418.0525.56469.756Ar0.0330.0262.1950.9701.084CO5.704CO20.1086.0430.3788.112C2H61.1383.990C3H80.2480.868C4H100.3051.071C5H120.0360.126NH30.282O220.3672.400H2O78.59442.6343.01318.572∑100.000100.000100.000100.000100.000②采用统一基准焓法计算101-B辐射段热负荷气体的临界参数和热容计算式中的参数(选自氮肥工艺设计手册P74-P75)热

5、容通式Cp=a+bT+cT2+dT3其中CO2Cp=a+bT+cT-0.5(kcal/kmol)Tc(K)Pc(atm)abcdHi,T0(kcal/kmol)N2126.2033.56.5290.00149-2.27E-070H233.3012.86.4240.00104-7.80E-080CH4190.7045.84.750.012003.03E-06-2.63E-09-17889Ar151.0048.04.940CO405.60112.56.480.001566-2.387E-07-26416CO2304.2072.918.036-4.474E-05-158.08

6、-94052C2H6305.4048.21.6480.04124-0.00001531.74E-09-20236C3H8369.9042.0-0.9660.07279-3.755E-057.58E-09-24820C4H10425.2037.50.9450.08873-0.00004388.36E-09-30150C5H12408.1036.0-1.890.09936-5.495E-051.192E-09-35000NH3405.60112.56.58460.006132.37E-06-1.60E-09-11004O2154.8050.16.7320.00151-1.7

7、9E-070H2O647.00218.36.970.003464-4.833E-07-57798单位换算，计算ai，biTc(K)Pc(MPa)abcdHi,T0(kJ/kmol)ai(R-K)10-6N.m4K0.5/kmol2bi(R-K)cm3/molN2126.203.39427.335620.00623-9.51E-070.00155748126.78098H233.301.29726.896000.00435-3.27E-070.0014578718.49465CH4190.704.64119.887300.050241.27