附录1-能量衡算一览表

2019“东华科技-恒逸石化杯”第十三届全国大学生化工竞赛山东齐鲁石化分厂年产20万吨醋酸乙烯项目能量衡算一览表西南大学乙炔吃醋队团队成员：何林海、罗成、李任元、杨鑫、周义芳指导老师：张钰婷、雷洪、王晓丹、李龙芹 能量衡算一览表目录第一章 总论1第二章 热量衡算原理2第三章 热量衡算任务3第四章 热量衡算44.1 醋酸乙烯合成工段44.1.1 醋酸乙烯合成固定床反应器（R0101）44.1.2 乙醛合成副反应反应器（R0102）54.1.3 新鲜原料预热器（E0101）64.1.4 流股间换热器（E0102）74.1.5 新鲜原料辅助预热器（E0103）94.1.6 反应气冷却器 （E0104）104.1.7 醋酸输送泵（P0101）114.1.8 鼓风机（C0101）124.1.9 混合器（M0101）134.1.10 混合器（M0102）144.1.11 混合器（M0103）154.1.12 混合器（M0104）174.1.13 混合器（M0105）184.2 预分离工段204.2.1 洗涤塔（T0201）204.2.2 汽提塔（T0202）214.2.3水泵（P0201）224.2.4 压缩机（C0201）234.2.5压缩机（C0202）254.2.6 分流器（F0201）264.2.7 气液分离器（V0201）274.3 CO2吸收解吸工段284.3.1 CO2吸收塔（T0301）284.3.2 CO2解吸塔（T0302）294.3.3 流股间换热器（E0301）314.3.4 循环MEA冷却器（E0302）324.3.5冷却器（E0303）334.3.6冷却器（E0304）344.3.7循环MEA泵（P0301）354.3.8混合器（M0301）364.3.9闪蒸罐（V0301）374.3.10膜分离器（V0302）394.4 醋酸乙烯精制工段404.4.1 醋酸乙烯回收精馏塔（T0401，热泵精馏）404.4.2 醋酸乙烯精制塔（T0402）414.4.3 乙醛精制塔（T0403）424.4.4 粗醋酸乙烯冷却器（E0401）444.4.5 循环HAc冷却器1（E0402）454.4.6 循环HAc冷却器2（E0403）464.4.7 循环HAc冷却器3（E0404）474.4.8 精醋酸乙烯冷却器（E0405）484.4.9 T0401冷却器（E0406）494.4.10 流股间换热器（E0407）514.4.11 T0401辅助再沸器（E0408）524.4.12 醋酸循环泵（P0401）534.4.13 醋酸循环泵（P0402）544.4.14 乙醛输送泵（P0404）554.4.15 醋酸乙烯输送泵（P0403）564.4.16 废水输送泵（P0405）574.4.17 压缩机（C0401）594.4.18 分流器（F0401）604.4.19 分流器（F0402）614.4.20 醋酸乙烯分相器（V0401）624.4.21气液分相器（V0402）634.4.22 减压阀（W0401）644.5 总结65乙炔吃醋队 第一章 总论本项目以山东省齐鲁市中国石化分厂的主产品乙烯为原料，经与其余新鲜原料混合、预热后，进入VAc合成反应器，反应器出口的粗VAc产品经过气液分离器、酸洗、水洗等手段进入醋酸回收塔，塔顶蒸出较纯的VAc以及少量的乙醛、水，在通过共沸精馏、分相等节能技术后，从VAc精制塔塔底可以精馏出高纯度的VAc，并且产出副产品乙醛。在已确定化学生产工艺和流程后，对各工段各重要设备进行能量衡算，以确定各单元操作需要热量以及冷量，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。第二章 热量衡算原理系统的热量衡算以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。第三章 热量衡算任务从入厂到产品输出，其工艺路线四个工段：VAc合成工段、预分离工段、CO2吸收解吸工段、VAc精制工段。在进行本厂的热量衡算中，主要通过定量计算完成下述基本任务：确定工艺单元中物料输送机械（如泵）所需要的功率，以便于进行设备的设计和选型；确定精馏等单元操作中所需要的热量或冷量以及传递速率，计算换热设备的尺寸，确定加热剂和冷却剂的消耗量，为后续设计中比如供汽、供冷、供水等专业提供设备条件；确定为保持一定反应温度所需移除或者加入的热传递速率，指导反应器的设计和选型；提高热量内部集成度，充分利用余热，提高能量利用率，降低能耗；最终计算出总需求能量和能量的费用，并由此确定工艺过程在经济上的可行性。第四章 热量衡算4.1 醋酸乙烯合成工段图4-1 VAc合成工段工艺流程简图本工段主要有原料预热器，流股之间换热器，主、副反应器，以及粗VAc冷却器。主要设备能量衡算如下。4.1.1 醋酸乙烯合成固定床反应器（R0101）表4-1 热负荷表WQHeat Duty Gcal/hr0-17.7218表4-2 流股焓变计算表进出口InOut物流编号01081-6Temperature160169.656Pressurebar87.36Molar Vapor Fraction11Molar Liquid Fraction00Molar Solid Fraction00Mass Vapor Fraction11Mass Liquid Fraction00Mass Solid Fraction00Molar Enthalpykcal/kmol-35.6090-39.2608Mass Enthalpykcal/kg-954.2110-1027.2700Molar Entropykcal/kmol-K-11.7142-11.6808Mass Entropykcal/kg-K-0.3139-0.3056Molar Densitykmol/cum0.23270.2063Mass Densitykg/cum8.68527.8860Enthalpy FlowGcal/hr-231.4600-249.1810Average MW37.317838.2185Volume Flowcum/hr27928.700030759.0000Mole Flowskmol/hr6500.03006346.8300Mass Flowskg/hr242567.0000242567.0000表4-3 热量平衡计算一览表W Gcal/hrQ Gcal/hrHinGcal/hrHoutGcal/hrError0-17.7218-231.4600-249.1810-1.000010-044.1.2 乙醛合成副反应反应器（R0102）表4-4 热负荷表WQHeat Duty Gcal/hr0-1.0455表4-5流股焓变计算表进出口InOut物流编号1-60109Temperature169.656163.8Pressurebar7.367.36Molar Vapor Fraction11Molar Liquid Fraction00Molar Solid Fraction00Mass Vapor Fraction11Mass Liquid Fraction00Mass Solid Fraction00Molar Enthalpykcal/mol-39.2608-39.4702Mass Enthalpykcal/kg-1027.2700-1031.5800Molar Entropycal/mol-K-11.6808-11.9587Mass Entropycal/gm-K-0.3056-0.3126Molar Densitykmol/cum0.20630.2096Mass Densitykg/cum7.88608.0213Enthalpy FlowGcal/hr-249.1810-250.2270Average MW38.218538.2619Volume Flowcum/hr30759.000030240.4000Mole Flowskmol/hr6346.83006339.6400Mass Flowskg/hr242567.0000242567.0000表4-6热量平衡计算一览表W Gcal/hrQ Gcal/hrHinGcal/hrHoutGcal/hrError0-1.0455-249.1810-250.2270-1.000010-044.1.3 新鲜原料预热器（E0101）表4-7 热负荷表WQHeat Duty Gcal/hr02.6299表4-8流股焓变计算表进出口InOut物流编号0103140Temperature93.2998140Pressurebar88Molar Vapor Fraction0.2414960.341529Molar Liquid Fraction0.7585040.658471Molar Solid Fraction00Mass Vapor Fraction0.1482610.253304Mass Liquid Fraction0.8517390.746696Mass Solid Fraction00Molar Enthalpykcal/mol-79.2487-77.3964Mass Enthalpykcal/kg-1606.9300-1569.3800Molar Entropycal/mol-K-53.2243-48.5426Mass Entropycal/gm-K-1.0792-0.9843Molar Densitykmol/cum1.08840.7403Mass Densitykg/cum53.677636.5102Enthalpy FlowGcal/hr-112.5170-109.8880Average MW49.316749.3167Volume Flowcum/hr1304.45001917.8200Mole Flowskmol/hr1419.80001419.8000Mass Flowskg/hr70019.900070019.9000表4-9热量平衡计算一览表W Gcal/hrQ Gcal/hrHinGcal/hrHoutGcal/hrError02.6299-112.5170-109.8880-1.000010-044.1.4 流股间换热器（E0102）表4-10 热负荷表WQHeat Duty Gcal/hr011.6974表4-11流股焓变计算表进出口InInOutOut物流编号0106010901070110Temperature76.1726163.8138.00995.8961Pressurebar87.3687.36Molar Vapor Fraction0.858651110.898539Molar Liquid Fraction0.141349000.101461Molar Solid Fraction0000Mass Vapor Fraction0.793072110.868674Mass Liquid Fraction0.206928000.131326Mass Solid Fraction0000Molar Enthalpykcal/mol-37.8480-39.4702-36.0484-41.3153Mass Enthalpykcal/kg-1014.2100-1031.5800-965.9860-1079.8000Molar Entropycal/mol-K-17.5193-11.9587-12.7552-16.6380Mass Entropycal/gm-K-0.4695-0.3126-0.3418-0.4348Molar Densitykmol/cum0.33260.20960.24840.2778Mass Densitykg/cum12.41048.02139.268110.6306Enthalpy FlowGcal/hr-246.0130-250.2270-234.3160-261.9240Average MW37.317838.261937.317838.2619Volume Flowcum/hr19545.500030240.400026172.300022817.7000Mole Flowskmol/hr6500.03006339.64006500.03006339.6400Mass Flowskg/hr242567.0000242567.0000242567.0000242567.0000表4-12热量平衡计算一览表W Gcal/hrQ Gcal/hrHinGcal/hrHoutGcal/hrError011.6974-496.2400-496.240004.1.5 新鲜原料辅助预热器（E0103）表4-13 热负荷表WQHeat Duty Gcal/hr02.8563表4-14流股焓变计算表进出口InOut物流编号01070108Temperature138.009160Pressurebar88Molar Vapor Fraction11Molar Liquid Fraction00Molar Solid Fraction00Mass Vapor Fraction11Mass Liquid Fraction00Mass Solid Fraction00Molar Enthalpykcal/mol-36.0484-35.6090Mass Enthalpykcal/kg-965.9860-954.2110Molar Entropycal/mol-K-12.7552-11.7142Mass Entropycal/gm-K-0.3418-0.3139Molar Densitykmol/cum0.24840.2327Mass Densitykg/cum9.26818.6852Enthalpy FlowGcal/hr-234.3160-231.4600Average MW37.317837.3178Volume Flowcum/hr26172.300027928.7000Mole Flowskmol/hr6500.03006500.0300Mass Flowskg/hr242567.0000242567.0000表4-15热量平衡计算一览表W Gcal/hrQ Gcal/hrHinGcal/hrHoutGcal/hrError02.8563-234.3160-231.46001.0000*10-44.1.6 反应气冷却器 （E0104）表4-16 热负荷表WQHeat Duty Gcal/hr0-13.9141表4-17流股焓变计算表进出口InOut物流编号01100111Temperature95.896120Pressurebar7.367.3Molar Vapor Fraction0.8985390.72549Molar Liquid Fraction0.1014610.27451Molar Solid Fraction00Mass Vapor Fraction0.8686740.647701Mass Liquid Fraction0.1313260.352299Mass Solid Fraction00Molar Enthalpykcal/mol-41.3153-43.5101Mass Enthalpykcal/kg-1079.8000-1137.1700Molar Entropycal/mol-K-16.6380-23.1677Mass Entropycal/gm-K-0.4348-0.6055Molar Densitykmol/cum0.27780.4272Mass Densitykg/cum10.630616.3445Enthalpy FlowGcal/hr-261.9240-275.8380Average MW38.261938.2619Volume Flowcum/hr22817.700014840.8000Mole Flowskmol/hr6339.64006339.6400Mass Flowskg/hr242567.0000242567.0000表4-18热量平衡计算一览表W Gcal/hrQ Gcal/hrHinGcal/hrHoutGcal/hrError0-13.9141-261.9240-275.8380-1.000010-044.1.7 醋酸输送泵（P0101）表4-19 热负荷表WQHeat Duty Gcal/hr0.00810表4-20流股焓变计算表进出口InOut物流编号01010102Temperature113.033113.289Pressurebar2.58Molar Vapor Fraction00Molar Liquid Fraction11Molar Solid Fraction00Mass Vapor Fraction00Mass Liquid Fraction11Mass Solid Fraction00Molar Enthalpykcal/mol-112.4760 -112.4630 Mass Enthalpykcal/kg-1881.6900 -1881.4800 Molar Entropycal/mol-K-68.0684 -68.0575 Mass Entropycal/gm-K-1.1388 -1.1386 Molar Densitykmol/cum15.9234 15.9171 Mass Densitykg/cum951.8000 951.4250 Enthalpy FlowGcal/hr-110.3960 -110.3840 Average MW59.7736 59.7736 Volume Flowcum/hr61.6396 61.6639 Mole Flowskmol/hr981.5130 981.5130 Mass Flowskg/hr58668.6000 58668.6000 表4-21热量平衡计算一览表W Gcal/hrQ Gcal/hrHinGcal/hrHoutGcal/hrError0.00810-110.3960 -110.3840 -1.000010-044.1.8 鼓风机（C0101）表4-22 热负荷表WQHeat Duty Gcal/hr0.32390表4-23流股焓变计算表进出口InOut物流编号01120113Temperature29.054135.892Pressurebar7.38Molar Vapor Fraction0.9996991Molar Liquid Fraction0.0003011310Molar Solid Fraction00Mass Vapor Fraction0.9998371Mass Liquid Fraction0.0001629466.76979E-09Mass Solid Fraction00Molar Enthalpykcal/mol-28.0970-28.0302Mass Enthalpykcal/kg-825.1080-823.1460Molar Entropycal/mol-K-9.8364-9.7931Mass Entropycal/gm-K-0.2889-0.2876Molar Densitykmol/cum0.30120.3229Mass Densitykg/cum10.256510.9966Enthalpy FlowGcal/hr-136.2270-135.9030Average MW34.052634.0526Volume Flowcum/hr16097.300015013.9000Mole Flowskmol/hr4848.45004848.4600Mass Flowskg/hr165102.0000165102.0000表4-24热量平衡计算一览表W Gcal/hrQ Gcal/hrHinGcal/hrHoutGcal/hrError0.32390-136.2270-135.9030-1.000010-044.1.9 混合器（M0101）表4-25 热负荷表WQHeat Duty Gcal/hr00表4-26流股焓变计算表进出口InInOut物流编号1-104130101Temperature25147.457113.033Pressurebar2.52.52.5Molar Vapor Fraction000Molar Liquid Fraction111Molar Solid Fraction000Mass Vapor Fraction000Mass Liquid Fraction111Mass Solid Fraction000Molar Enthalpykcal/mol-115.1360-111.2570-112.4760Mass Enthalpykcal/kg-1924.8100-1861.9300-1881.6900Molar Entropycal/mol-K-75.7841-65.1589-68.0684Mass Entropycal/gm-K-1.2669-1.0905-1.1388Molar Densitykmol/cum17.915515.054815.9234Mass Densitykg/cum1071.6600899.5820951.8000Enthalpy FlowGcal/hr-35.4883-74.9079-110.3960Average MW59.817159.753759.7736Volume Flowcum/hr17.204544.722261.6396Mole Flowskmol/hr308.2290673.2850981.5130Mass Flowskg/hr18437.400040231.200058668.6000表4-27热量平衡计算一览表W Gcal/hrQ Gcal/hrHinGcal/hrHoutGcal/hrError00-110.3962-110.3960-1.000010-044.1.10 混合器（M0102）表4-28 热负荷表WQHeat Duty Gcal/hr00表4-29流股焓变计算表进出口InInInOut物流编号1-21-301020103Temperature2525113.28993.2998PressureBar8888Molar Vapor Fraction1000.241496Molar Liquid Fraction0110.758504Molar Solid Fraction0000Mass Vapor Fraction1000.148261Mass Liquid Fraction0110.851739Mass Solid Fraction0000Molar Enthalpykcal/mol12.4594-68.2727-112.4630-79.2487Mass Enthalpykcal/kg444.1260-3789.7100-1881.4800-1606.9300Molar Entropycal/mol-K-17.0496-39.0152-68.0575-53.2243Mass Entropycal/gm-K-0.6077-2.1657-1.1386-1.0792Molar Densitykmol/cum0.338355.173015.91711.0884Mass Densitykg/cum9.4905993.9570951.425053.6776Enthalpy FlowGcal/hr4.2888-6.4224-110.3840-112.5170Average MW28.053818.015359.773649.3167Volume Flowcum/hr1017.50001.705061.66391304.4500Mole Flowskmol/hr344.218094.0700981.51301419.8000Mass Flowskg/hr9656.62001694.700058668.600070019.9000表4-30热量平衡计算一览表W Gcal/hrQ Gcal/hrHinGcal/hrHoutGcal/hrError00-112.5176-112.5170-1.000010-044.1.11 混合器（M0103）表4-31 热负荷表WQHeat Duty Gcal/hr00表4-32流股焓变计算表进出口InInInOut物流编号01041-41-50105Temperature1402525130.887Pressurebar8888Molar Vapor Fraction0.341529110.45788Molar Liquid Fraction0.658471000.54212Molar Solid Fraction0000Mass Vapor Fraction0.253304110.353177Mass Liquid Fraction0.746696000.646823Mass Solid Fraction0000Molar Enthalpykcal/mol-77.3964-94.0780-0.0161-66.6698Mass Enthalpykcal/kg-1569.3800-2137.6600-0.5045-1421.4300Molar Entropycal/mol-K-48.5426-3.6059-4.1456-41.7030Mass Entropycal/gm-K-0.9843-0.0819-0.1296-0.8891Molar Densitykmol/cum0.74030.34160.32470.5590Mass Densitykg/cum36.510215.031710.388826.2206Enthalpy FlowGcal/hr-109.8880-0.2187-0.0037-110.1100Average MW49.316744.009831.998846.9033Volume Flowcum/hr1917.82006.8065706.72102954.3200Mole Flowskmol/hr1419.80002.3248229.44601651.5700Mass Flowskg/hr70019.9000102.31307341.990077464.2000表4-33热量平衡计算一览表W Gcal/hrQ Gcal/hrHinGcal/hrHoutGcal/hrError00-110.1104-110.1100-1.000010-044.1.12 混合器（M0104）表4-34 热负荷表WQHeat Duty Gcal/hr00表4-35流股焓变计算表进出口InInOut物流编号010501130106Temperature130.88735.89276.1726Pressurebar888Molar Vapor Fraction0.4578810.858651Molar Liquid Fraction0.5421200.141349Molar Solid Fraction000Mass Vapor Fraction0.35317710.793072Mass Liquid Fraction0.6468236.76979E-090.206928Mass Solid Fraction000Molar Enthalpykcal/mol-66.6698-28.0302-37.8480Mass Enthalpykcal/kg-1421.4300-823.1460-1014.2100Molar Entropycal/mol-K-41.7030-9.7931-17.5193Mass Entropycal/gm-K-0.8891-0.2876-0.4695Molar Densitykmol/cum0.55900.32290.3326Mass Densitykg/cum26.220610.996612.4104Enthalpy FlowGcal/hr-110.1100-135.9030-246.0130Average MW46.903334.052637.3178Volume Flowcum/hr2954.320015013.900019545.5000Mole Flowskmol/hr1651.57004848.46006500.0300Mass Flowskg/hr77464.2000165102.0000242567.0000表4-36热量平衡计算一览表W Gcal/hrQ Gcal/hrHinGcal/hrHoutGcal/hrError00-246.0130-246.0130-1.000010-044.1.13 混合器（M0105）表4-37 热负荷表WQHeat Duty Gcal/hr00表4-38流股焓变计算表进出口InInOut物流编号020603010112Temperature28.104665.36829.0541Pressurebar7.37.37.3Molar Vapor Fraction0.99993310.999699Molar Liquid Fraction6.67923E-0500.000301131Molar Solid Fraction000Mass Vapor Fraction0.99996410.999837Mass Liquid Fraction3.60393E-0500.000162946Mass Solid Fraction000Molar Enthalpykcal/mol-28.73786.8705-28.0970Mass Enthalpykcal/kg-841.3180242.8200-825.1080Molar Entropycal/mol-K-9.7791-13.7826-9.8364Mass Entropycal/gm-K-0.2863-0.4871-0.2889Molar Densitykmol/cum0.30220.26710.3012Mass Densitykg/cum10.32197.558710.2565Enthalpy FlowGcal/hr-136.82700.5994-136.2270Average MW34.158128.294634.0526Volume Flowcum/hr15756.2000326.589016097.3000Mole Flowskmol/hr4761.210087.24604848.4500Mass Flowskg/hr162634.00002468.5900165102.0000表4-39热量平衡计算一览表W Gcal/hrQ Gcal/hrHinGcal/hrHoutGcal/hrError00-136.2276-136.2270-1.000010-044.2 预分离工段图4-2 预分离工段流程简图4.2.1 洗涤塔（T0201）表4-40 热负荷表WReboilerQHeat Duty Gcal/hr000表4-41流股焓变计算表进出口InInInInOutOut物流编号020102102-22-302030204Temperature2025.102125.1966111.30328.03731.2815Pressurebar7.37.37.37.37.37.3Molar Vapor Fraction100110Molar Liquid Fraction011001Molar Solid Fraction000000Mass Vapor Fraction100110Mass Liquid Fraction011001Mass Solid Fraction000000Molar Enthalpykcal/mol-26.7058-68.2712-115.0550-64.2236-28.7378-112.1420Mass Enthalpykcal/kg-781.8000-3789.6300-1925.4800-1588.4900-841.3180-1908.2300Molar Entropycal/mol-K-10.7971-39.0092-75.7013-3.0399-9.7791-72.4066Mass Entropycal/gm-K-0.3161-2.1653-1.2669-0.0752-0.2863-1.2321Molar Densitykmol/cum0.311855.167517.92650.23310.302217.8632Mass Densitykg/cum10.6495993.85901071.17009.423310.32381049.7700Enthalpy FlowGcal/hr-122.8290-3.4136-201.3460-24.4050-140.6690-211.3240Average MW34.159318.015359.753740.430734.158158.7672Volume Flowcum/hr14752.90000.906397.62111630.390016195.7000105.4930Mole Flowskmol/hr4599.340050.00001750.0000380.00004894.90001884.4400Mass Flowskg/hr157110.00009