10-能量平衡计算书

大连石化热电厂减排1.7万吨/年二氧化硫循环经济利用项目 大连理工大学Chem Strangers大连石化热电厂减排1.7万吨/年二氧化硫循环经济利用项目 能量平衡计算书目录1.概述12.能量衡算原理23.能量衡算任务34.能量衡算表44.1深度脱硫工段44.2亚硫酸钠制备工段54.3硫酸钠制备工段94.4硫酸生产工段1211.概述本项目为大连石化热电厂烟气脱硫项目，内容包括减排1.7万吨/年二氧化硫，联产0.74万吨/年亚硫酸钠、1.2万吨/年硫酸钠和1.3万吨/年硫酸循环经济利用项目。项目建厂位于中国石油大连石化分公司，以热电厂氯碱生产装置产出的氢氧化钠溶液作为吸收剂，吸收4-6#高压锅炉外排烟气中的二氧化硫，吸收富液送至产品转换装置，通过加热、加酸等方式产出亚硫酸钠及硫酸钠产品，所得二氧化硫与水的混合物经分离后，将二氧化硫送往硫酸生产车间制成硫酸产品，部分酸回用到上述工段，部分酸作为产品输出。设计过程中利用Aspen Plus对全流程进行模拟，并在此基础上完成物料衡算、能量衡算，Aspen plus全模拟流程如图1-1、1-2、1-3、1-4所示。图1-1 深度脱硫工段模拟图1-2亚硫酸钠制备工段模拟图1-3 硫酸钠制备工段模拟图1-4 硫酸生产工段模拟2.能量衡算原理系统的能量衡算能量守恒为理论基础，研究某一系统内各类型的能量的变化，即：输入系统的能量=输出系统的能量+系统积累的能量对于连续系统，有：Q+W=Hout-Hin注：Q设备的热负荷；W输入系统的机械能；Hout离开设备的各物料焓之和；Hin进入设备的各物料焓之和。本项目的能量衡算以单元设备为对象，计算由机械能转换、化学反应释放能量和单纯的物理变化带来的热量变化。3.能量衡算任务（1）确定流程中机械所需的功率，为设备设计和选型提供依据。（2）确定精馏各单元操作中所需的热量或冷量及传递速率，确定加热剂和冷剂的用量，为后续换热和公用工程的设计做准备。（3）确定反应过程中的热交换量，指导反应器的设计和选型。（4）最终计算出所需的能量和费用，判定工艺过程的经济性 大连石化热电厂减排1.7万吨/年二氧化硫循环经济利用项目 能量平衡计算书4.能量衡算表4.1深度脱硫工段 表4-1脱硫塔T101物料衡算104103105106Total Flow kmol/hr258.5146421.7141633.025012.17Total Flow kg/hr4800.001338770.001250870.0092700.66Total Flow l/min60.736012770.007582190.001547.86Temperature C40.0040.0042.8536.55Pressure bar3.003.002.402.40Vapor Frac0.000.901.000.00Liquid Frac1.000.100.001.00Enthalpy cal/mol-64507.78-19498.35-13883.79-68592.69Average MW18.5676928.8392230.0450218.4951表4-2换热器E101物料衡算429430Total Flow kmol/hr143.28143.28Total Flow kg/hr4086.194086.19Total Flow l/min34985.7823365.62Temperature C255.1280.00Pressure bar3.003.00Vapor Frac1.001.00Liquid Frac0.000.00Enthalpy cal/mol1205.28-34.82Average MW28.5228.52表4-3压缩机C101物料衡算421429Total Flow kmol/hr143.28143.28Total Flow kg/hr4086.194086.19Total Flow l/min68899.7434985.78Temperature C80.85255.12Pressure bar1.023.00Vapor Frac1.001.00Liquid Frac0.000.00Enthalpy cal/mol-26.681205.28Average MW28.5228.524.2亚硫酸钠制备工段表4-4闪蒸罐V201物料衡算202203205Total Flow kmol/hr2215.421974.28240.82Total Flow kg/hr48003.0835866.6212136.46Total Flow l/min1032940.001035370.0095.36Temperature C107.84107.84107.84Pressure bar1.001.001.00Vapor Frac0.891.000.00Liquid Frac0.080.000.73Solid Frac0.030.000.27Enthalpy cal/mol-64243.68-57187.71-121980.00Average MW21.6718.1750.40表4-5闪蒸罐V202物料衡算209210212Total Flow kmol/hr102.6614.3887.31Total Flow kg/hr9647.05276.609370.44Total Flow l/min47.5612202.9242.29Temperature C98.3295.9595.95Pressure bar1.000.600.60Vapor Frac0.001.000.00Liquid Frac0.310.000.19Solid Frac0.690.000.81Enthalpy cal/mol-201740.00-57580.44-226180.00Average MW93.9719.24107.33表4-6闪蒸罐V203物料衡算216217218Total Flow kmol/hr80.180.7579.39Total Flow kg/hr9236.1014.939221.18Total Flow l/min39.501772.2039.19Temperature C73.4170.6470.64Pressure bar0.600.200.20Vapor Frac0.001.000.00Liquid Frac0.110.000.10Solid Frac0.890.000.90Enthalpy cal/mol-241270.00-58006.07-243120.00Average MW115.1920.03116.15表4-7换热器E201物料衡算109201Total Flow kmol/hr2004.872011.68Total Flow kg/hr37080.2637080.26Total Flow l/min619.161067100.00Temperature C36.55128.00Pressure bar2.401.00Vapor Frac0.000.96Liquid Frac1.000.04Solid Frac0.000.00Enthalpy cal/mol-68592.66-57607.92Average MW18.5018.43表4-8换热器E202物料衡算STEAMCONDENSETotal Flow kmol/hr5.005.00Total Flow kg/hr90.0090.00Total Flow l/min700.141.63Temperature C144.00144.00Pressure bar4.044.04Vapor Frac1.000.00Liquid Frac0.001.00Solid Frac0.000.00Enthalpy cal/mol-56879.96-66154.10Average MW18.0218.02表4-9换热器E203物料衡算203204Total Flow kmol/hr1974.281974.28Total Flow kg/hr35866.6235866.62Total Flow l/min1035370.001012390.00Temperature C107.8499.54Pressure bar1.001.00Vapor Frac1.001.00Liquid Frac0.000.00Solid Frac0.000.00Enthalpy cal/mol-57187.71-57256.00Average MW18.1718.17表4-10换热器E204物料衡算210211Total Flow kmol/hr14.3814.38Total Flow kg/hr276.60276.60Total Flow l/min12202.9211844.73Temperature C95.9585.24Pressure bar0.600.60Vapor Frac1.001.00Liquid Frac0.000.00Solid Frac0.000.00Enthalpy cal/mol-57580.44-57668.52Average MW19.2419.24表4-11换热器E205物料衡算225226Total Flow kmol/hr7.947.94Total Flow kg/hr922.12922.12Total Flow l/min3.923.91Temperature C70.6420.00Pressure bar0.201.00Vapor Frac0.000.00Liquid Frac0.100.10Solid Frac0.900.90Enthalpy cal/mol-243120.00-244540.00Average MW116.15116.15表4-12闪蒸罐V201物料衡算202203205Total Flow kmol/hr2215.421974.28240.82Total Flow kg/hr48003.0835866.6212136.46Total Flow l/min1032940.001035370.0095.36Temperature C107.83107.84107.84Pressure bar1.001.001.00Vapor Frac0.891.000.00Liquid Frac0.080.000.73Solid Frac0.030.000.27Enthalpy cal/mol-64243.68-57187.71-121980.00Average MW21.6718.1750.40表4-13闪蒸罐V202物料衡算209210212Total Flow kmol/hr102.6614.3887.31Total Flow kg/hr9647.05276.609370.44Total Flow l/min47.5612202.9242.29Temperature C98.3295.9595.95Pressure bar1.000.600.60Vapor Frac0.001.000.00Liquid Frac0.310.000.19Solid Frac0.690.000.81Enthalpy cal/mol-201740.00-57580.44-226180.00Average MW93.9719.24107.33表4-14闪蒸罐V203物料衡算216217218Total Flow kmol/hr80.180.7579.39Total Flow kg/hr9236.1014.939221.18Total Flow l/min39.501772.2039.19Temperature C73.4170.6470.64Pressure bar0.600.200.20Vapor Frac0.001.000.00Liquid Frac0.110.000.10Solid Frac0.890.000.90Enthalpy cal/mol-241270.00-58006.07-243120.00Average MW115.1920.03116.154.3硫酸钠制备工段表4-15 闪蒸罐V301物料衡算305309306Total Flow kmol/hr3067.2459.703007.31Total Flow kg/hr62971.787815.5855156.20Total Flow l/min3009380.0050.695880840.00Temperature C90.0087.4187.41Pressure bar0.500.260.26Vapor Frac0.980.001.00Liquid Frac0.000.100.00Solid Frac0.020.900.00Enthalpy cal/mol-62203.57-304730.00-57393.85Average MW20.53130.9118.34表4-16压缩机C301物料衡算表306307Total Flow kmol/hr3007.313007.31Total Flow kg/hr55156.2055156.20Total Flow l/min5880840.005278460.00Temperature C87.41107.60Pressure bar0.260.30Vapor Frac1.001.00Liquid Frac0.000.00Solid Frac0.000.00Enthalpy cal/mol-57393.85-57229.31Average MW18.3418.34表4-17二氧化硫分离塔T301物料衡算314SO2315Total Flow kmol/hr4996.7128.734967.98Total Flow kg/hr91314.351814.3489500.01Total Flow l/min19057.145571.651582.45Temperature C110.0014.38120.26Pressure bar2.002.002.00Vapor Frac0.011.000.00Liquid Frac0.990.001.00Solid Frac0.000.000.00Enthalpy cal/mol-66716.10-71263.02-66590.72Average MW18.2763.1518.02表4-18换热器E301物料衡算301302Total Flow kmol/hr12.2712.27Total Flow kg/hr1098.851098.85Total Flow l/min12.7812.24Temperature C107.6640.00Pressure bar1.001.00Vapor Frac0.000.00Liquid Frac1.001.00Solid Frac0.000.00Enthalpy cal/mol-196300.00-196280.00Average MW89.5789.57表4-19换热器E302物料衡算304307305308Total Flow kmol/hr3163.853007.313067.243007.31Total Flow kg/hr62971.7855156.2062971.7855156.20Total Flow l/min1868.135278460.003009380.0024196.21Temperature C38.45107.6090.0042.88Pressure bar0.500.300.500.30Vapor Frac0.001.000.980.01Liquid Frac1.000.000.000.99Solid Frac0.000.000.020.00Enthalpy cal/mol-70559.81-57229.31-62203.57-68018.84Average MW19.9018.3420.5318.34表4-20换热器E303物料衡算308312Total Flow kmol/hr3007.313007.31Total Flow kg/hr55156.2055156.20Total Flow l/min24196.214942530.00Temperature C42.8883.50Pressure bar0.300.30Vapor Frac0.011.00Liquid Frac0.990.00Solid Frac0.000.00Enthalpy cal/mol-68018.84-57426.37Average MW18.3418.34表4-21换热器E304物料衡算313314Total Flow kmol/hr4996.714996.71Total Flow kg/hr91314.3591314.35Total Flow l/min12525500.0019057.14Temperature C89.20110.00Pressure bar0.202.00Vapor Frac1.000.01Liquid Frac0.000.99Solid Frac0.000.00Enthalpy cal/mol-57359.83-66716.10Average MW18.2718.274.4硫酸生产工段表4-22反应器R401物料衡算404405Total Flow kmol/hr185.17176.60Total Flow kg/hr6314.346314.34Total Flow l/min134968.00178081.00Temperature C400.00657.90Pressure bar1.281.28Vapor Frac1.001.00Liquid Frac0.000.00Solid Frac0.000.00Enthalpy cal/mol-8137.68-8532.54Average MW34.1035.76表4-23反应器R402物料衡算406407Total Flow kmol/hr176.60172.86Total Flow kg/hr6314.346314.34Total Flow l/min136796.00155238.00Temperature C436.63549.53Pressure bar1.271.27Vapor Frac1.001.00Liquid Frac0.000.00Solid Frac0.000.00Enthalpy cal/mol-10502.26-10729.57Average MW35.7636.53表4-24反应器R403物料衡算406407Total Flow kmol/hr176.60172.86Total Flow kg/hr6314.346314.34Total Flow l/min136796.00155238.00Temperature C436.63549.53Pressure bar1.271.27Vapor Frac1.001.00Liquid Frac0.000.00Solid Frac0.000.00Enthalpy cal/mol-10502.26-10729.57Average MW35.7636.53表4-25反应器R404物料衡算428414Total Flow kmol/hr144.38144.02Total Flow kg/hr4144.184144.18Total Flow l/min124324.00126919.00Temperature C404.00419.73Pressure bar1.091.09Vapor Frac1.001.00Liquid Frac0.000.00Solid Frac0.000.00Enthalpy cal/mol1937.951942.80Average MW28.7028.78表4-26三氧化硫吸收塔T401物料衡算418417411412419Total Flow kmol/hr27.9561.91171.64144.3890.06Total Flow kg/hr503.536057.986314.344144.188731.49Total Flow l/min8.4370.53104624.0062609.34100.30Temperature C32.00124.08223.9980.52150.10Pressure bar1.131.131.131.131.13Vapor Frac0.000.001.001.000.00Liquid Frac1.001.000.000.001.00Solid Frac0.000.000.000.000.00Enthalpy cal/mol-68185.42-209620.00-14013.44-386.99-204550.00Average MW18.0297.8636.7928.7096.95表4-27三氧化硫吸收塔T402物料衡算415420416421Total Flow kmol/hr144.0261.8961.91143.28Total Flow kg/hr4144.186000.006057.984086.19Total Flow l/min82125.2068.9370.5368899.74Temperature C163.00150.10124.0880.85Pressure bar1.061.131.021.02Vapor Frac1.000.000.001.00Liquid Frac0.001.001.000.00Solid Frac0.000.000.000.00Enthalpy cal/mol76.67-204550.00-209620.00-26.68Average MW28.7896.9597.8628.52表4-28换热器E401物料衡算402409403425Total Flow kmol/hr185.17171.64185.17171.64Total Flow kg/hr6314.346314.346314.346314.34Total Flow l/min78779.78144216.0087084.93126805.00Temperature C34.27466.24161.40350.57Pressure bar1.001.221.281.17Vapor Frac1.001.001.001.00Liquid Frac0.000.000.000.00Solid Frac0.000.000.000.00Enthalpy cal/mol-10970.18-11898.65-10016.25-12927.78Average MW34.1036.7934.1036.79表4-29换热器E402物料衡算403405404406Total Flow kmol/hr185.17176.60185.17176.60Total Flow kg/hr6314.346314.346314.346314.34Total Flow l/min87084.93178081.00134968.00136796.00Temperature C161.40657.90400.00436.63Pressure bar1.281.281.281.27Vapor Frac1.001.001.001.00Liquid Frac0.000.000.000.00Solid Frac0.000.000.000.00Enthalpy cal/mol-10016.25-8532.54-8137.68-10502.26Average MW34.1035.7634.1035.76表4-30换热器E403物料衡算426407408428Total Flow kmol/hr144.38172.86172.86144.38Total Flow kg/hr4144.186314.346314.344144.18Total Flow l/min91538.08155238.00137907.00124324.00Temperature C225.46549.53429.12404.00Pressure bar1.091.271.221.09Vapor Frac1.001.001.001.00Liquid Frac0.000.000.000.00Solid Frac0.000.000.000.00Enthalpy cal/mol638.73-10729.57-11814.731937.95Average MW28.7036.5336.5328.70表4-31换热器E404物料衡算412414426427Total Flow kmol/hr144.38144.02144.38144.02Total Flow kg/hr4144.184144.184144.184144.18Total Flow l/min62609.34126919.0091538.08101287.00Temperature C80.52419.73225.46279.92Pressure bar1.131.091.091.09Vapor Frac1.001.001.001.00Liquid Fr