8-1 附录一 物料平衡计算书

30万吨PDH项目 物料平衡计算书 目录1.概述22.物料衡算原理23.物料衡算任务34.系统物料衡算34.1 预处理工段物料衡算34.2 丙烷脱氢反应工段物料衡算114.3 氢气分离及选择加氢反应工段物料衡算174.4 全流程物料衡算22物料平衡计算书1.概述本项目旨为中海石油炼化有限责任公司惠州炼油分公司设计一座生产30万吨/年丙烯项目分厂，该项目以总厂产生的液化气为原料，通过原料预处理、丙烷脱氢反应、氢气分离及选择加氢三个工段，丙烷资源化利用程度大大增加，最终得到质量分数为99.7%的聚合级丙烯和纯度为99.99%的氢气，以及副产C4液化气和少量C2燃料气。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模拟流程如图1-1所示。图1-1 Aspen Plus模拟流程图2.物料衡算原理系统的物料衡算以质量守恒为理论基础，研究某一系统内进出物料量及组成的变化，即：系统累计的质量输入系统的质量输出系统的质量反应生成的质量反应消耗的质量假设系统无泄漏，有：当系统无化学反应发生时，有：在稳定状态下，有：，其中，进入系统的物料流率；流出系统的物料流率；反应产生物料速率；反应消耗物料速率。3.物料衡算任务通过对系统整体以及部分主要单元的详细物料衡算，得到主、副产品的产量，原料的消耗量，“三废”的排放量以及最后产品的质量指标等关键经济技术指标，对所选工艺路线、设计流程进行定量评述，为后阶段的设计提供依据。4.系统物料衡算4.1 预处理工段物料衡算原料预处理工段模拟流程图如下图所示：图4-1 原料预处理工段模拟流程图 西南石油大学Boiling 330万吨PDH项目 物料平衡计算书 表4-1 原料预处理工段物料衡算表inoutSteam No.0105010101020122010301240121010401360143Steam Name空气含硫LPG原料新鲜碱液循环丙烷碱渣C4液化气C2燃料气含硫空气丙烷聚合级丙烯Temperature C35353544.93540-18.93520.17.9Pressure bar12181230121828.5128.57.5Vapor Frac100.1660001100Mole Flow kmol/hr1874.5271405.7114.7411622.364.545443.42598.62392640.171616.021869.989Mass Flow kg/hr54080.8566462.62286.96569005.90293.59225384.5462320.584267272071180.14536582.683Volume Flow cum/hr4000134.2540.916159.9910.39346.48857.261197682.192145.9769.703Enthalpy Gcal/hr0.098-25.969-0.229-28.802-0.291-10.816-0.4424.854-45.7170.465Mass Flow kg/hrC3H8022883.081046763.419095.760069494.1156.217C3H6017167.295020991.15019.698001686.03536452.538C2H601136.51100.531001063.5520073.511C2H406.64601087.251001093.481000.416CH4000131.08500131.085000H200032.4650032.465000H2O0071.323078.36800000NC4H1003668.7370003668.7370000IC4H10015013.90600015013.9060000NC4H803628.8590003628.85900001:3-C4=02957.5870002957.5870000C3H40000000000H2S0000000000CH4S0000000000CH3S-0000000000OH-006.6510000000O212596.34900000622515.92200C2H6S2000000013.01800NA2S000015.22400000N241484.501000000205019000NA+008.9900000004.1.1 预碱洗罐物料衡算表4-2 预碱洗罐物料衡算inoutSteam No.010701100112Steam NameLPG、碱液混合物循环碱液含硫LPGTemperature C353535Pressure bar121212Vapor Frac00.1620Mole Flow kmol/hr1551.251144.8731405.988Mass Flow kg/hr69143.4472667.52966475.919Volume Flow cum/hr131.82827.505135.231Enthalpy Gcal/hr-32.987-7.081-25.967Mass Flow kg/hrC3H822883.081022883.081C3H617167.295017167.295C2H61136.51101136.511C2H46.64606.646CH4000H2000H2O2182.482189.5090NC4H103668.73703668.737IC4H1015013.906015013.906NC4H83628.85903628.8591:3-C4=2957.58702957.587C3H4000H2S6.64800CH4S13.297013.297CH3S-000OH-203.429196.7940O2000C2H6S2000NA2S015.2240N2000NA+274.971266.0020 西南石油大学Boiling 6 30万吨PDH项目 物料平衡计算书 4.1.2 纤维膜接触反应器物料衡算表4-3 纤维膜接触反应器物料衡算inoutSteam No.0112010901130111Steam Name含硫LPG循环碱液无硫LPG含硫碱液Temperature C35353535Pressure bar12121212Vapor Frac00.16600.165Mole Flow kmol/hr1405.988108.7991405.849108.937Mass Flow kg/hr66475.9191995.63666465.1122006.443Volume Flow cum/hr135.23121.029135.21621.032Enthalpy Gcal/hr-25.967-5.263-25.972-5.264Mass Flow kg/hrC3H822883.081022883.0810C3H617167.295017167.2950C2H61136.51101136.5110C2H46.64606.6460CH40000H20000H2O01636.6922.491639.181NC4H103668.73703668.7370IC4H1015013.906015013.9060NC4H83628.85903628.85901:3-C4=2957.58702957.5870C3H400001:3-C4=0000C3H40000H2S0000CH4S13.297000CH3S-00013.018OH-0152.6330147.932O20000C2H6S20000NA2S0000N20000NA+0206.3110206.3114.1.3 超重力反应器物料衡算表4-4 超重力反应器物料衡算表inoutSteam No.0105011101040109Steam Name空气含硫碱液含硫空气循环碱液Temperature C35353535Pressure bar12121212Vapor Frac1010.166Mole Flow kmol/hr1874.527108.9371874.596108.799Mass Flow kg/hr54080.852006.44354091.6571995.636Volume Flow cum/hr400021.0324000.11321.029Enthalpy Gcal/hr0.098-5.2640.097-5.263Mass Flow kg/hrC3H80000C3H60000C2H60000C2H40000CH40000H20000H2O01639.18101636.692NC4H100000IC4H100000NC4H800001:3-C4=0000C3H400001:3-C4=0000C3H40000H2S0000CH4S0000CH3S-013.0180152.633OH-0147.9320147.932O212596.349012594.1380C2H6S20013.0180NA2S0000N241484.501041484.5010NA+0206.3110206.3114.1.4 脱丙烷塔物料衡算表4-5 脱丙烷塔物料衡算表inoutSteam No.011601240117Steam Name无硫LPG原料C4液化气C2、C3混合物Temperature C354042.7Pressure bar181817.5Vapor Frac000Mole Flow kmol/hr1405.711443.425962.287Mass Flow kg/hr66462.62225384.54641078.076Volume Flow cum/hr134.25446.48894.744Enthalpy Gcal/hr-25.969-10.816-14.782Mass Flow kg/hrC3H822883.08195.7622787.321C3H617167.29519.69817147.597C2H61136.51101136.511C2H46.64606.646CH4000H2000H2O000NC4H103668.7373668.7370IC4H1015013.90615013.9060NC4H83628.8593628.85901:3-C4=2957.5872957.5870C3H4000H2S000CH4S000CH3S-000OH-000O2000C2H6S2000NA2S000N2000NA+0004.1.5 脱乙烷塔物料衡算表4-6 脱乙烷塔物料衡算表inoutSteam No.0119012201230121Steam NameC2、C3混合物循环丙烷C3组分C2燃料气Temperature C69.544.971.6-18.9Pressure bar30302928.5Vapor Frac0001Mole Flow kmol/hr962.2871622.362486.02398.623Mass Flow kg/hr41078.07669005.902107763.3942320.584Volume Flow cum/hr117.184159.991306.96257.261Enthalpy Gcal/hr-13.839-28.802-40.574-0.442Mass Flow kg/hrC3H822787.32146763.41969550.740C3H617147.59720991.1538138.7470C2H61136.5110.53173.491063.552C2H46.6461087.2510.4161093.481CH40131.0850131.085H2032.465032.465H2O0000NC4H100000IC4H100000NC4H800001:3-C4=0000C3H400001:3-C4=0000C3H40000H2S0000CH4S0000CH3S-0000OH-0000O20000C2H6S20000NA2S0000N20000NA+00004.1.6 丙烯精制热泵双塔物料衡算表4-7 丙烯精制热泵双塔物料衡算表inoutSteam No.012801360143Steam NameC3组分丙烷聚合级丙烯Temperature C19.220.17.9Pressure bar98.57.5Vapor Frac000Mole Flow kmol/hr2486.0231616.021869.989Mass Flow kg/hr107763.39471180.14536582.683Volume Flow cum/hr218.707145.9769.703Enthalpy Gcal/hr-45.011-45.7170.465Mass Flow kg/hrC3H869550.7469494.1156.217C3H638138.7471686.03536452.538C2H673.49073.511C2H40.41600.416CH4000H2000H2O000NC4H10000IC4H10000NC4H80001:3-C4=000C3H4000H2S000CH4S000CH3S-000OH-000O2000C2H6S2000NA2S000N2000NA+0004.2 丙烷脱氢反应工段物料衡算丙烷脱氢反应工段模拟流程图如图4-2所示：图4-2 丙烷脱氢反应工段模拟流程图表4-8 丙烷脱氢反应工段物料衡算表inoutSteam No.0202020302040217Steam Name丙烷循环氢气新鲜氢气丙烷、丙烯、氢气混合物Temperature C15.8325300Pressure bar2.52.52.52Vapor Frac1111Mole Flow kmol/hr1616.0211189.1754003729.784Mass Flow kg/hr71180.1452397.234806.35274383.731Volume Flow cum/hr14856.21610936.3283971.43588899.862Enthalpy Gcal/hr-39.582-0.1790-9.81Mass Flow kg/hrC3H869494.110047026.078C3H61686.0350020528.787C2H60000.581C2H40001308.284CH4000748.462H202397.234806.3524167.043H2O0000NC4H100000IC4H100000NC4H800001:3-C4=0000C3H4000604.495H2S0000CH4S0000CH3S-0000OH-0000O20000C2H6S20000NA2S0000N20000NA+00004.2.1 丙烷脱氢一段反应器物料衡算表4-9 丙烷脱氢一段反应器物料衡算表inoutSteam No.02090210Steam Name丙烷、氢气混合物丙烷、丙烯、氢气混合物Temperature C600538.5Pressure bar2.51.6Vapor Frac11Mole Flow kmol/hr3205.1963354.684Mass Flow kg/hr74383.7374383.73Volume Flow cum/hr93157.32141568.1Enthalpy Gcal/hr-5.5-5.5Mass Flow kg/hrC3H869494.1162902.11C3H61686.0357294.035C2H600.082C2H40455.022CH40260.252H23203.5863472.233H2O00NC4H1000IC4H1000NC4H8001:3-C4=00C3H400H2S00CH4S00CH3S-00OH-00O200C2H6S200NA2S00N200NA+004.2.2 二段丙烷脱氢反应器表4-10 二段丙烷脱氢反应器物料衡算表inoutSteam No.02110212Steam Name丙烷、丙烯氢气混合物丙烷、丙烯、氢气混合物Temperature C600551.3Pressure bar21.2Vapor Frac11Mole Flow kmol/hr3354.6843474.324Mass Flow kg/hr74383.7374383.73Volume Flow cum/hr121855.4198553.8Enthalpy Gcal/hr-1.038-1.038Mass Flow kg/hrC3H862902.1157626.08C3H67294.03511696C2H60.0820.302C2H4455.022876.733CH4260.252501.528H23472.2333683.095H2O00NC4H1000IC4H1000NC4H8001:3-C4=00C3H400H2S00CH4S00CH3S-00OH-00O200C2H6S200NA2S00N200NA+004.2.3 三段丙烷脱氢反应器表4-11 三段丙烷脱氢反应器物料衡算表inoutSteam No.02130214Steam Name丙烷、丙烯、氢气混合物丙烷、丙烯、氢气混合物Temperature C600553.4Pressure bar20.8Vapor Frac11Mole Flow kmol/hr3474.3243587.554Mass Flow kg/hr74383.7374383.731Volume Flow cum/hr126200.7308262.651Enthalpy Gcal/hr2.5082.508Mass Flow kg/hrC3H857626.0852632.748C3H61169616019.822C2H60.3020.5C2H4876.7331170.703CH4501.528669.742H23683.0953890.215H2O00NC4H1000IC4H1000NC4H8001:3-C4=00C3H400H2S00CH4S00CH3S-00OH-00O200C2H6S200NA2S00N200NA+004.2.4 四段丙烷脱氢反应器表4-12 四段丙烷脱氢反应器物料衡算表inoutSteam No.02150216Steam Name丙烷、丙烯、氢气混合物丙烷、丙烯、氢气混合物Temperature C600546.5Pressure bar20.4Vapor Frac11Mole Flow kmol/hr3587.5543714.696Mass Flow kg/hr74383.7374383.73Volume Flow cum/hr130313.1632968.6Enthalpy Gcal/hr5.9095.909Mass Flow kg/hrC3H852632.7547026.08C3H616019.8221163.7C2H60.50.581C2H41170.7031308.284CH4669.742748.462H23890.2154136.628H2O00NC4H1000IC4H1000NC4H8001:3-C4=00C3H400H2S00CH4S00CH3S-00OH-00O200C2H6S200NA2S00N200NA+004.2.5 丙烷脱氢收率反应器物料衡算表表4-13 丙烷脱氢收率反应器物料衡算表inoutSteam No.02160217Steam Name丙烷、丙烯、氢气混合物丙烷、丙烯、氢气混合物Temperature C546.5549.6Pressure bar0.42Vapor Frac11Mole Flow kmol/hr3714.6963729.784Mass Flow kg/hr74383.73174383.731Volume Flow cum/hr632968.64127665.565Enthalpy Gcal/hr5.9096.755Mass Flow kg/hrC3H847026.07847026.078C3H621163.69820528.787C2H60.5810.581C2H41308.2841308.284CH4748.462748.462H24136.6284167.043H2O00NC4H1000IC4H1000NC4H8001:3-C4=00C3H40604.495H2S00CH4S00CH3S-00OH-00O200C2H6S200NA2S00N200NA+004.3 氢气分离及选择加氢反应工段物料衡算氢气分离及选择加氢反应工段模拟流程图如下图所示：图4-3 氢气分离及选择加氢反应工段模拟流程图表4-14 氢气分离及选择加氢反应工段物料衡算表inoutSteam No.03020360036103630108Steam Name丙烷、丙烯、氢气混合物PSA燃料气高纯度氢气循环氢气循环丙烷Temperature C40-10-10-76.944.9Pressure bar111112.530Vapor Frac11110Mole Flow kmol/hr3729.78456.423846.7871189.1751622.36Mass Flow kg/hr74383.731273.6621707.022397.23369005.902Volume Flow cum/hr96926.52105.271694.7097772.872159.991Enthalpy Gcal/hr-23.271-0.739-0.201-0.822-28.802Mass Flow kg/hrC3H847026.08264.080046763.419C3H620528.79167.9910020991.15C2H60.5810.049000.531C2H41308.284221.032001087.251CH4748.462617.37700131.085H24167.04301707.022397.23332.465H2O00000NC4H1000000IC4H1000000NC4H8000001:3-C4=00000C3H4604.4953.133000H2S00000CH4S00000CH3S-00000OH-00000O200000C2H6S200000NA2S00000N200000NA+000004.3.1 丙烯-乙烯复叠式制冷物料衡算表4-15 丙烯-乙烯复叠式制冷物料衡算inoutSteam No.030903150317Steam Name丙烯、丙烷、氢气混合物富氢气丙烯、丙烷混合物Temperature C30-10-10Pressure bar111111Vapor Frac110Mole Flow kmol/hr3729.7842117.3841612.4Mass Flow kg/hr74383.735428.31368955.42Volume Flow cum/hr8347.1844237.028126.987Enthalpy Gcal/hr-23.879-1.224-30.757Mass Flow kg/hrC3H847026.08264.0846762C3H620528.79167.99120360.8C2H60.5810.0490.531C2H41308.284221.0321087.252CH4748.462617.377131.085H24167.0434154.65112.393H2O000NC4H10000IC4H10000NC4H80001:3-C4=000C3H4604.4953.133601.363C3H40.0080.0010.009H2S000CH4S000CH3S-000OH-000O2000C2H6S2000NA2S000N2000NA+0004.3.2 变压吸附塔物料衡算表4-16 变压吸附塔物料衡算表inoutSteam No.031503590360Steam Name富氢气高纯度氢气PSA燃料气Temperature C-10-10-10Pressure bar111111Vapor Frac111Mole Flow kmol/hr2117.3842060.96156.423Mass Flow kg/hr5428.3134154.6511273.662Volume Flow cum/hr4237.0284124.687105.27Enthalpy Gcal/hr-1.224-0.49-0.739Mass Flow kg/hrC3H8264.080264.08C3H6167.9910167.991C2H60.04900.049C2H4221.0320221.032CH4617.3770617.377H24154.6514154.6510H2O000NC4H10000IC4H10000NC4H80001:3-C4=000C3H43.13303.133H2S000CH4S000CH3S-000OH-000O2000C2H6S2000NA2S000N2000NA+0004.3.3 选择加氢反应器物料衡算表4-17 选择加氢反应器物料衡算表inoutSteam No.035403550358Steam Name丙烷、丙烯混合物高纯度氢气循环丙烷Temperature C-976.334.4Pressure bar22.322.316Vapor Frac010.104Mole Flow kmol/hr1612.4251622.359Mass Flow kg/hr68955.4250.39769005.87Volume Flow cum/hr126.5432.913355.037Enthalpy Gcal/hr-30.710.009-28.864Mass Flow kg/hrC3H846762046763.39C3H620360.8020991.15C2H60.53100.531C2H41087.25201087.252CH4131.0850131.085H212.39350.39732.465H2O000NC4H10000IC4H10000NC4H80001:3-C4=000C3H4601.36300H2S000CH4S000CH3S-000OH-000O2000C2H6S2000NA2S000N2000NA+0004.4 全流程物料衡算全流程模拟