9-2附录二 能量衡算

茂名石化年产20万吨醋酸乙烯酯项目能量衡算目录1.概述12.能量衡算目的13.能量衡算方法24.系统能量衡算24.1醋酸乙烯酯合成工段24.1.1泵P010124.1.2换热器E010134.1.3换热器E010234.1.4反应器R0101A44.1.5反应器R0101B54.1.6反应器R0101C54.1.7换热器E010364.1.8压缩机C010174.2原料分离与循环工段74.2.1分离器V020174.2.2乙烯分离塔T020184.2.3醋酸分离塔T020284.2.4醋酸脱水分离器V020594.2.5二氧化碳吸收塔T0203104.2.6乙烯分离器V0202104.2.7高温分离器V0203114.2.8常温分离器V0204124.2.9换热器E0201124.3产品分离与精制工段134.3.1混合器M0301134.3.2 VAc脱水塔T0301134.3.3甘油回收塔T0302144.3.4泵P0301154.3.5换热器E030115华侨大学The Elites队 1.概述本项目拟建一套年产20万吨的醋酸乙烯酯装置，在全工艺段中伴随着物料从一个体系或单元进入另一个体系或单元，在发生质量传递的同时也伴随着能量的消耗、释放和转化。对于新设计的装置，可以由此确定设备的热负荷。再根据设备的热负荷大小、所处理物料的性质及工艺要求选择恰当的设备。通过下述能量衡算，可以为后续设计工作中提高热量的利用率，降低能耗提供主要依据。设计过程中利用Aspen Plus对全流程进行模拟，并在此基础上完成能量衡算、能量衡算，Aspen plus全模拟流程如图1-1所示。图1-1全流程模拟流程图2.能量衡算目的（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，确定加热蒸汽和冷却剂的用量，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。3.能量衡算方法根据能量守恒：输入系统的能量 = 输出系统的能量 + 系统积累的能量本装置主要设备有反应器、精馏塔、换热器、闪蒸罐、压缩机和泵，输入整个生产系统的能量主要有电能、加热蒸汽带入的能量和进入物料的焓，输出的能量有冷却剂带走的能量和输出物料的焓。对于连续系统，有： 注：Q 设备的热负荷；W 输入系统的机械能； 离开设备的各能量焓之和；进入设备的各能量焓之和。4.系统能量衡算4.1醋酸乙烯酯合成工段4.1.1泵P0101表4-1泵P0101能量衡算INOUTTemperature C96.797.1Pressure bar19Vapor Frac00Mole Flow kmol/hr871.269871.269Mass Flow kg/hr52421.14552421.145Volume Flow cum/hr53.76153.79Enthalpy Gcal/hr-98.5330412-98.5169481H Gcal/hr0.0160931Q Gcal/hrW Gcal/hrHinGcal/hrHoutGcal/hrRel.diff00.0160931-98.5330412-98.5169481-1.63E-044.1.2换热器E0101表4-2换热器E0101能量衡算INOUTTemperature C97.1204Pressure bar98.5Vapor Frac01Mole Flow kmol/hr871.269871.269Mass Flow kg/hr52421.14552421.145Volume Flow cum/hr53.792947.597Enthalpy Gcal/hr-98.5169481-90.4420751H Gcal/hr8.074873QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff8.0748730-98.5169481-90.4420751-8.20E-024.1.3换热器E0102表4-3换热器E0102能量衡算INOUTTemperature C134.1160Pressure bar8.58.45Vapor Frac11Mole Flow kmol/hr4527.2564527.256Mass Flow kg/hr157268.853157268.853Volume Flow cum/hr16684.48518175.219Enthalpy Gcal/hr-53.4553-50.8470242H Gcal/hr2.60827574Q Gcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff2.608275740-53.4553-50.8470242-4.88E-024.1.4反应器R0101A表4-4反应器R0101A能量衡算INOUTTemperature C160187Pressure bar8.458.45Vapor Frac11Mole Flow kmol/hr4527.2564379.201Mass Flow kg/hr157268.853157268.853Volume Flow cum/hr18175.21919158.193Enthalpy Gcal/hr-50.8470242-89.6541391H Gcal/hr-38.8071149QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff-38.80711490-50.8470242-89.65413910.43234.1.5反应器R0101B表4-5反应器R0101B能量衡算INOUTTemperature C187160Pressure bar8.458.513Vapor Frac11Mole Flow kmol/hr4379.2014363.361Mass Flow kg/hr157268.853157268.853Volume Flow cum/hr19158.19317609.494Enthalpy Gcal/hr-89.6541391-95.2208425H Gcal/hr-5.56670336QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff-5.566703360-89.6541391-95.22084255.84E-024.1.6反应器R0101C表4-6反应器R0101C能量衡算INOUTTemperature C160160.7Pressure bar8.5138.513Vapor Frac11Mole Flow kmol/hr4363.3614363.211Mass Flow kg/hr157268.853157268.853Volume Flow cum/hr17609.49417642.445Enthalpy Gcal/hr-95.2208-95.2208H Gcal/hr0Q Gcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff00-95.2208-95.220804.1.7换热器E0103表4-7换热器E0201能量衡算INOUTTemperature C160.740Pressure bar8.5138.313Vapor Frac10.613Mole Flow kmol/hr4363.2114363.211Mass Flow kg/hr157268.853157268.853Volume Flow cum/hr17642.4458147.923Enthalpy Gcal/hr-95.2208425-115.169082H Gcal/hr-19.9482396QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff-19.94823960-95.2208425-115.1690820.174.1.8压缩机C0101表4-8压缩机C0101能量衡算INOUTTemperature C40113Pressure bar512Vapor Frac11Mole Flow kmol/hr2628.3612628.361Mass Flow kg/hr74129.44474129.444Volume Flow cum/hr13377.9666847.174Enthalpy Gcal/hr28.192415530.2943515H Gcal/hr2.101936QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff02.10193628.192415530.2943515-6.94E-024.2原料分离与循环工段4.2.1分离器V0201表4-9分离器V0201能量衡算INOUT1OUT2Temperature C401010Pressure bar8.3137.57.5Vapor Frac0.61310Mole Flow kmol/hr4363.2112467.6771895.534Mass Flow kg/hr157268.85372789.14684479.707Volume Flow cum/hr8147.9237412.59597.419Enthalpy Gcal/hr-115.1690829.575-126.747H Gcal/hr-2.00332672QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff-2.003326720-115.169082-117.1724091.71E-024.2.2乙烯分离塔T0201表4-10乙烯分离塔T0201能量衡算INOUT1OUT2Temperature C1028.6148Pressure bar7.577.2Vapor Frac010Mole Flow kmol/hr1895.534469.6811425.853Mass Flow kg/hr84479.70714139.09670340.611Volume Flow cum/hr97.4191622.06286.383Enthalpy Gcal/hr-126.7473261.184-122.411H Gcal/hr5.52029625QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff5.520296250-126.747326-121.227026-4.36E-024.2.3醋酸分离塔T0202表4-11醋酸分离塔T0202能量衡算INOUT1OUT2Temperature C148127.572.2Pressure bar7.21.71.5Vapor Frac000Mole Flow kmol/hr1425.853903.411522.442Mass Flow kg/hr70340.61139159.11731181.494Volume Flow cum/hr86.38344.29235.542Enthalpy Gcal/hr-122.411-84.681-39.664H Gcal/hr-1.93415536QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff-1.934155360-122.410976-124.3451261.56E-024.2.4醋酸脱水分离器V0205表4-12醋酸脱水分离器V0205能量衡算INOUT1OUT2Temperature C127.5127.5127.5Pressure bar1.71.71.7Vapor Frac010Mole Flow kmol/hr903.411362.004541.407Mass Flow kg/hr39159.1176521.60132637.516Volume Flow cum/hr44.2926970.45535.113Enthalpy Gcal/hr-84.681-20.637-60.634H Gcal/hr3.41001754QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff3.410017540-84.6808353-81.2708178-4.03E-024.2.5二氧化碳吸收塔T0203表4-13二氧化碳吸收塔T0203能量衡算IN1IN2OUT1OUT2Temperature C11012.86731.2Pressure bar1.8711.7Vapor Frac0110Mole Flow kmol/hr4803.432937.3583255.5234279.666Mass Flow kg/hr110258.6286928.24286028.191111158.672Volume Flow cum/hr88.7249577.73391653.04886.297Enthalpy Gcal/hr-340.6510.759-2.974-326.911H Gcal/hr0QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff00-329.891396-329.884919-1.96E-054.2.6乙烯分离器V0202表4-14乙烯分离器V0202能量衡算INOUT1OUT2Temperature C674040Pressure bar155Vapor Frac101Mole Flow kmol/hr3255.523627.1622628.361Mass Flow kg/hr86028.19111898.74674129.444Volume Flow cum/hr91653.04813.48713377.966Enthalpy Gcal/hr-2.974-38.10628.192H Gcal/hr-6.9401059QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff-6.94010590-2.97354308-9.913648980.704.2.7高温分离器V0203表4-15高温分离器V0203能量衡算INOUT1OUT2Temperature C31.2230230Pressure bar1.711Vapor Frac010Mole Flow kmol/hr4279.6663719.828765.438Mass Flow kg/hr111158.67276037.84435120.827Volume Flow cum/hr86.297155140.66518.323Enthalpy Gcal/hr-326.911-212.002-67.069H Gcal/hr-6.9401059QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff-6.94010590-2.97354308-9.913648980.704.2.8常温分离器V0204表4-16常温分离器V0204能量衡算INOUT1OUT2Temperature C2302020Pressure bar10.60.6Vapor Frac110Mole Flow kmol/hr3719.828240.6993479.129Mass Flow kg/hr76037.8449700.50466337.34Volume Flow cum/hr155140.6659735.01767.152Enthalpy Gcal/hr-212.002-16.11-239.191H Gcal/hr-43.2990229QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff-43.29902290-212.001771-255.3007940.174.2.9换热器E0201表4-17换热器E0202能量衡算INOUTTemperature C57.6110Pressure bar21.8Vapor Frac00Mole Flow kmol/hr4310.6464803.43Mass Flow kg/hr110258.614110258.62Volume Flow cum/hr85.56888.724Enthalpy Gcal/hr-343.652611-340.650263H Gcal/hr3.0023549QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff3.00235490-343.652611-340.650263-8.74E-044.3产品分离与精制工段4.3.1混合器M0301表4-18混合器M0301能量衡算IN1IN2OUTTemperature C505050Pressure bar222Vapor Frac000Mole Flow kmol/hr 0.001977.275977.275Mass Flow kg/hr 0.00190000.36490000.364Volume Flow cum/hr -0.001-154.622-154.622H Gcal/hr0QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff00-154.62229-154.622291.24E-104.3.2 VAc脱水塔T0301表4-19 VAc脱水塔T0301能量衡算IN1IN2OUT1OUT2Temperature C5072.2190.172.4Pressure bar21.51.11.1Vapor Frac0000Mole Flow kmol/hr977.275522.4421181.315318.403Mass Flow kg/hr90000.36431181.49493916.11327265.745Volume Flow cum/hr71.82835.54283.2731.603Enthalpy Gcal/hr-154.622-39.664-160.547-25.953H Gcal/hr7.78613776QGcal/hrWGcal/hrHinGcal/hrHoutGcal/hrRel.diff7.786137760-194.28658-186.500538-0.044.3.3甘油回收塔T0302表4-20甘油回收塔T0302能量衡算INOUT1OUT2Temperature C190.147.9287.2Pressure bar1.111Vapor Frac000Mole Flow kmol/hr1181.315204.0497