5-1 附录一 物料平衡计算书

河北农业大学威风堂堂团队 团队名称：河北农业大学威风堂堂队指导老师：李继文、刘祺凤、刘红蕾、纪晓婧、刘媛 团队成员：赵雅琦、靳晓悦、杜学朴、李军豪、陈宇翔完成时间：2017年7月2017“东华科技-陕鼓杯”第十一届全国大学生化工设计竞赛8.64亿立方米每年废气脱硫项目物料平衡计算书目录1.概述12.物料衡算原理23.物料衡算任务44. 全流程物料衡算55. 分工段物料衡算95.1烟气脱硫工段物料衡算95.2硫酸镁纯化工段物料衡算175.3碱式碳酸镁合成工段物料衡算24 9 /26 河北农业大学威风堂堂团队 1. 概述本项目旨在为中海石油中捷石化120万中海石油中捷石化120万吨裂化装置镁法深度脱硫项目，该项目以总厂产生的含硫废气为原料，通过烟气脱硫、碱式硫酸镁脱硫、硫酸镁分离纯化等工段，将烟气中SO2含量降至100mg/Nm3，并且最终获得高纯度无水硫酸镁晶体，以及副产物碱式碳酸镁。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. 物料衡算原理工艺设计中，物料衡算是在工艺流程确定后进行的。目的是根据原料与产品之间的定量转化关系，计算原料的消耗量，各种中间产品、产品和副产品的产量，生产过程中各阶段的消耗量以及组成，进而为热量衡算、其他工艺计算及设备计算打基础。对于已有装置，物料衡算可以弄清原料的来龙去脉，找出生产中的薄弱环节，为改进生产、完善管理提供可靠的依据和明确方向，并可作为检查原料利用率及三废处理完善程度的一种手段。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：dFdt=Fin-Fout+GR-CR当系统无化学反应发生时，有：dFdt=Fin-Fout在稳定状态下，有：dFdt=Fin-Fout=0，Fin=Fout其中，Fin进入系统的物料流率；Fout流出系统的物料流率；GR反应产生物料速率；CR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. 全流程物料衡算全流程物料衡算表格如下：表4-1全流程输入物质总量全流程物料衡算UnitsINStream ClassMGOH2OG12-H2OO2H2SO4CO2Stream Class氧化镁工艺水含硫烟气工艺水空气浓硫酸二氧化碳PhaseLiquidLiquidMixedLiquidVaporLiquidVaporTemperatureC252534020252020Pressurebar110.11111Molar Vapor Fraction000.981547260101Molar Liquid Fraction110.018452741010Molar Solid Fraction0000000Mass Vapor Fraction000.992475240101Mass Liquid Fraction110.007524761010Mass Solid Fraction0000000Molar Enthalpykcal/mol-62.964067-68.725855-15.36256-68.823206-0.0019157-188.59917-94.042718Mass Enthalpykcal/kg-1562.2132-3814.8647-521.57445-3820.2684-0.0664938-2008.3811-2136.8586Molar Entropycal/mol-K-11.742226-40.11985510.4392525-40.449141.01448968-97.3257950.54199462Mass Entropycal/gm-K-0.2913386-2.22699040.35442318-2.24526850.03521244-1.03641640.01231532Molar Densitykmol/cum132.89055255.17299760.0019984255.44000460.0403615519.06273390.0412664Mass Densitykg/cum5356.07396993.9570.05886197998.7672061.162838311790.106431.81612593Enthalpy FlowGcal/hr-6.2488529-76.297293-3.7429782-0.0688232-1.81E-05-4.02E-01-11.285126Average MW40.304418.0152829.454203918.0152828.81054493.906070344.0098Mole Flowskmol/hr99.24474751110.1687243.64286919.427104192.12978777120Mole FractionsMass Flowskg/hr4000200007122.3067318.01528271.62005281.176MG(OH)2kg/hr0000000N2kg/hr004883.141530211.26879600CO2kg/hr001329.613640005281.176H2Okg/hr020000417.27795818.01528020O2kg/hr00234.273603060.331204300SO2kg/hr002400000NO2kg/hr00180000MGSO3kg/hr0000000MGSO4kg/hr0000000MGCO3kg/hr0000000MG(NO3)2kg/hr0000000MGSO3-3Hkg/hr0000000MGSO4-7Hkg/hr0000000MGOkg/hr4000000000MGHCO-01kg/hr0000000MG+kg/hr0000000HCO3-kg/hr0000000ASHkg/hr0000000CO3-kg/hr0000000H2SO4kg/hr000001980Volume Flowcum/hr0.7468156820.1215948121917.5370.01803752233.5664360.11172522907.93492输入合计kg/hr36893.098表4-2全流程输出物质总量全流程物料输出总量UnitsOUTStream ClassG5C5L8OUT1OUT2OUT3OUT-H2OStream Class合格烟气碱式碳酸镁硫酸镁晶体空气空气滤液废水PhaseVaporMixedSoildVaporVaporMixedMixedTemperatureC57.05440828076.046846920208076.0468469Pressurebar110.71110.7Molar Vapor Fraction0.202113070.57091296010.988005080.998843940.98779441Molar Liquid Fraction0.797886930.42908704100.011994920.001156060.01220559Molar Solid Fraction0000000Mass Vapor Fraction0.272349130.40494445010.963125160.99751220.95131678Mass Liquid Fraction0.727650870.59505555100.036874840.00248780.04868322Mass Solid Fraction0000000Molar Enthalpykcal/mol-56.079701-333.49024-315.25189-24.270013-20.90614813.4246553-59.138789Mass Enthalpykcal/kg-2838.8745-6834.0638-2619.0543-732.45849-660.00233580.021619-3161.4768Molar Entropycal/mol-K-30.372791-929.74142-123.988681.15347202-43.823225190.704131-9.510162Mass Entropycal/gm-K-1.5375357-19.052768-1.0300750.03481129-1.38348928.23950536-0.5083999Molar Densitykmol/cum0.179936720.059583890.838902670.041106010.041571910.034492960.02457929Mass Densitykg/cum3.554506232.90758855100.9775391.36204781.316826320.798342770.45978177Enthalpy FlowGcal/hr-58.121943-63.146743-1.6924881-0.116686-0.19013953.4601111-0.3793833Average MW19.754201948.7982326120.368633.135000831.675869623.145094618.7060643Mole Flowskmol/hr1036.41679189.35115.368685044.807825089.09490788257.7430136.41513409Mole FractionsMass Flowskg/hr20473.58659239.99902646.221102159.307288288.4957855965.48643120.001911MG(OH)2kg/hr8.42E-22828.1016310003.380006660N2kg/hr4768.4821611.4637926091.7256427222.73450100CO2kg/hr1.41E-063038.25412054.269944624.421475100H2Okg/hr15475.5356963.336950003660.68041114.79045O2kg/hr229.4785830.9587904702.397461865.7591675300SO2kg/hr0.064231421.9271948901.92719493000NO2kg/hr0.025911623.5948176808.987043995.3922263900MGSO3kg/hr1.19E-2300019.23023600MGSO4kg/hr00646.2211020005.2114605MGCO3kg/hr04392.361730008.873458040MG(NO3)2kg/hr0000000MGSO3-3Hkg/hr0000000MGSO4-7Hkg/hr0000000MGOkg/hr0000000MGHCO-01kg/hr0000000MG+kg/hr2.09E-230000660.8372970HCO3-kg/hr0.00E+00000000ASH0000000CO3-kg/hr5.17E-2300001631.715260H2SO4kg/hr000010.551510100Volume Flowcum/hr5759.896073177.890846.3996519116.961599218.7753327472.33726260.997537输出合计kg/hr36893.0985. 分工段物料衡算5.1烟气脱硫工段物料衡算烟气脱硫工段模拟流程图如下图所示：图5-1烟气脱硫工段模拟流程图5.1.1烟气除尘物料衡算表5-1烟气除尘物料衡算表烟气除尘物料衡算UnitsINOUTStream Name锅炉烟气入口循环水含硫烟气出口循环水TemperatureC3402022.369139922.50549819Pressurekg/sqcm0.1019716211.0197162130.1019716210.101971621Mass Vapor Fraction0.992475224013.18E-07Mass Liquid Fraction0100.999091653Mass Solid Fraction0.007524776000.000908029Mass Enthalpykcal/kg-546.008946-3794.466446-887.2219466-3779.196406Mass Densitygm/cc5.88E-050.9983303350.0001101770.993697059Enthalpy FlowGcal/hr-3.918320177-227.6679867-6.837121662-224.7469193Mass FlowsTotalkg/hr7176.293600007706.2134159469.49965H2Okg/hr417.27600001391.99577759024.78841NO2kg/hr904.1081399274.891530685NOkg/hr908.9799742580.020029595CO2kg/hr1329.61301020.805215308.7199242SO2kg/hr2400176.881120163.11349748N2kg/hr4883.1404870.7340712.40540658O2kg/hr234.270232.70911431.560843701ASHkg/hr540054Volume Flowcum/hr121969.28860.1003474269944.1299959.846709935.1.2氧化镁水化物料衡算表5-2氧化镁水化物料衡算氧化镁水化反应器物料衡算UnitsINOUTStream Name工艺水氧化镁固体氢氧化镁浆液TemperatureC95.532706042520Pressurebar0.811Molar Vapor Fraction0.00752441100Molar Liquid Fraction0.99247558911Molar Solid Fraction000Mass Vapor Fraction0.00752441100Mass Liquid Fraction0.99247558911Mass Solid Fraction000Molar Enthalpykcal/mol-67.27106818-62.96406714-136.7629208Mass Enthalpykcal/kg-3734.111719-1562.213236-6460.330214Molar Entropycal/mol-K-35.76368881-11.74222592-280.7938787Mass Entropycal/gm-K-1.985186398-0.291338561-13.26398389Molar Densitykmol/cum3.271809921132.890551929.51136105Mass Densitykg/cum58.942571845356.073961624.7451447Enthalpy FlowGcal/hr-85.30531333-6.248852943-173.4265271Average MW18.0152840.304421.16964866Mole Flowskmol/hr1268.08322999.244747471268.08148Mole FractionsMass Flowskg/hr22844.87443400026844.83941MG(OH)2kg/hr005787.916814N2kg/hr000CO2kg/hr000H2Okg/hr22844.87443021056.92259O2kg/hr000SO2kg/hr000NO2kg/hr000MGSO3kg/hr000MGSO4kg/hr3.31E-3300MGCO3kg/hr000MG(NO3)2kg/hr000MGSO3-3Hkg/hr000MGSO4-7Hkg/hr000MGOkg/hr040000MGHCO-01kg/hr000MG+kg/hr000HCO3-kg/hr000ASH0000Mass FractionsVolume Flowcum/hr387.57851440.74681567742.969264565.1.3烟气吸收塔物料衡算表5-3烟气吸收塔物料衡算烟气吸收塔物料衡算Stream ClassGASINMGOH2GASOUTLIQUIDOUTStream Name含硫烟气氢氧化镁浆液洁净烟气排出液PhaseVAPORLiquidVaporLiquidTemperatureC209078.7652698272.71586055Pressurebar1111Molar Vapor Fraction0.921152939010Molar Liquid Fraction0.078847061101Molar Solid Fraction0000Mass Vapor Fraction0.949080127010Mass Liquid Fraction0.050919873101Mass Solid Fraction0000Molar Enthalpykcal/mol-19.46992833-71.32462019-23.33454581-74.34923561Mass Enthalpykcal/kg-653.840638-3733.988081-971.6953877-3683.561917Molar Entropycal/mol-K-1.990657487-37.24361137-1.562256128-38.72911429Mass Entropycal/gm-K-0.066850414-1.949778359-0.065055351-1.918797003Molar Densitykmol/cum0.04458966446.488379580.03426056446.63668288Mass Densitykg/cum1.32778158887.99587620.822742104941.3176165Enthalpy FlowGcal/hr-4.65338382-112.0196424-7.184505401-109.4873081Average MW29.7777886519.1014589924.0142601320.18406023Mole Flowskmol/hr239.0036441570.560658307.89137521472.608389Mole FractionsMass Flowskg/hr7117300007393.78357829723.21642MG(OH)2kg/hr0000N2kg/hr488304873.7173259.282675695CO2kg/hr1328.99998603.94E-241.26E-07H2Okg/hr416.5162837255002277.63900324250.52234O2kg/hr2.34E+020232.91430921.085690797SO2kg/hr239.139939705.22E-251.53E-14NO2kg/hr1409.5129403754.487059623MGSO3kg/hr0000MGSO4kg/hr0000MGCO3kg/hr0000MG(NO3)2kg/hr0000SO3-kg/hr6.80E-0700299.9406491SO4-kg/hr0000HSO4-kg/hr0000HSO3-kg/hr1.09E+00000.000542161MG+kg/hr018.804643460137.0689627H2SO3kg/hr0.00E+00000H+kg/hr0000MGOH+kg/hr0.00E+003155.69145902954.665668H3O+kg/hr0.2553826362.45E-1005.90E-10H2SO4kg/hr0000OH-kg/hr4.29E-131325.5038980253.9630656HNO3kg/hr0000HCO3-kg/hr1.92E-05001.184347858NO3-kg/hr0000CO3-kg/hr1.07E-14001811.015418Mass FractionsVolume Flowcum/hr5360.06833333.783940678986.75725831.576182055.1.4沉淀离心机物料衡算表5-4沉淀离心机物料衡算沉淀离心机INOUTStream ClassL4C1L5OUT1Stream name吸收液滤饼滤液气体PhaseMixedMixedMixedVaporTemperatureC20202020Pressurebar1111Molar Vapor Fraction0.0435973430.0293606470.0116571311Molar Liquid Fraction0.9564026570.9706393530.9883428690Molar Solid Fraction0000Mass Vapor Fraction0.0828363490.0436576830.0533542981Mass Liquid Fraction0.9171636510.9563423170.9466457020Mass Solid Fraction0000Molar Enthalpykcal/mol-159.4042343-259.0143191-76.41750717-61.51943739Mass Enthalpykcal/kg-6772.844948-9228.820043-4061.351002-1582.919962Molar Entropycal/mol-K-359.6845052-707.7889936-68.133045721.704394543Mass Entropycal/gm-K-15.2824509-25.21890401-3.621057840.04385476Molar Densitykmol/cum0.9150209111.288311334.2763452220.041179796Mass Densitykg/cum21.5357370236.1575022980.462792191.600433323Enthalpy FlowGcal/hr-145.544249-109.2054172-35.99273358-1.256901184Average MW23.5357867328.0658110118.8157849838.86452813Mole Flowskmol/hr913.0513357421.6192277471.001147620.43096032Mole FractionsMass Flowskg/hr21489.3815111833.085568862.256318794.039632MG(OH)2kg/hr5479.9204195370.32201109.59840840N2kg/hr191.34126873.8268253740187.5144433CO2kg/hr1167.465637583.73281860583.7328186H2Okg/hr13976.571455590.628588385.942870O2kg/hr8.0102847711.6020569542.4030854314.005142385SO2kg/hr19.583293519.79164675609.791646756NO2kg/hr17.991161843.5982323695.3973485538.995580922MGSO3kg/hr358.91460540358.91460540MGSO4kg/hr0000MGCO3kg/hr0000MG(NO3)2kg/hr0000MGSO3-3Hkg/hr0000MGSO4-7Hkg/hr0000MGOkg/hr0000MGHCO-01kg/hr0000MG+kg/hr44.7721746444.7721746400HCO3-kg/hr224.8112174224.811217400Volume Flowcum/hr997.8475077327.2650159110.1410488496.14040195.2硫酸镁纯化工段物料衡算硫酸镁纯化工段流程图如下：图5-2硫酸镁纯化工段模拟流程图5.2.1亚硫酸镁氧化塔物料衡算表5-5亚硫酸镁氧化塔物料衡算表亚硫酸镁氧化塔物料衡算UnitsINOUTStream ClassL5O2L6OUT2Stream Name滤液空气硫酸镁溶液出口空气PhaseMixedVaporLiquidMixedTemperatureC20252020Pressurebar1111Molar Vapor Fraction0.011657131100.806635013Molar Liquid Fraction0.988342869010.193364987Molar Solid Fraction0000Mass Vapor Fraction0.053354298100.676019117Mass Liquid Fraction0.946645702010.323980883Mass Solid Fraction0000Molar Enthalpykcal/mol-76.41750717-0.001915724-69.31515337-190.9957106Mass Enthalpykcal/kg-4061.351002-0.066493847-3701.028503-5405.151947Molar Entropycal/mol-K-68.133045721.014489683-38.47375997-629.620739Mass Entropycal/gm-K-3.621057840.035212445-2.054276378-17.81817902Molar Densitykmol/cum4.2763452220.04036155338.870345450.05075937Mass Densitykg/cum80.462792191.162838309727.9878971.793626172Enthalpy FlowGcal/hr-35.99273358-1.81E-05-32.49199901-1.917074134Average MW18.8157849828.81054418.7286191735.33586335Mole Flowskmol/hr471.00114769.427104188468.757514410.03726277Mole FractionsMass Flowskg/hr8862.256318271.68779.180972354.6753455MG(OH)2kg/hr109.598408400109.5984084N2kg/hr0211.26879570211.2687957CO2kg/hr0000H2Okg/hr8385.9428708385.942870O2kg/hr2.40E+0060.3312043010.4650626SO2kg/hr0000NO2kg/hr5.397348553005.397348553MGSO3kg/hr358.91460540017.94573027MGSO4kg/hr00393.23810220MGCO3kg/hr0000MG(NO3)2kg/hr0000MGSO3-3Hkg/hr0000MGSO4-7Hkg/hr0000MGOkg/hr0000MGHCO-01kg/hr0000MG+kg/hr0000HCO3-kg/hr0000ASHMass FractionsVolume Flowcum/hr110.1410488233.566436412.05951501197.74206635.2.1中和反应器物料衡算表5-6中和反应器物料衡算表中和反应器R0201物料衡算UnitsINOUTStream Class3H2SO4S6Stream Name混合液浓硫酸硫酸镁溶液PhaseMixedLiquidMixedTemperatureC202020Pressurebar111Molar Vapor Fraction0.03003136700.028577337Molar Liquid Fraction0.96996863310.971422663Molar Solid Fraction000Mass Vapor Fraction0.04664790300.042706595Mass Liquid Fraction0.95335209710.957293405Mass Solid Fraction000Molar Enthalpykcal/mol-70.99227289-188.5991724-69.6562542Mass Enthalpykcal/kg-3602.232325-2008.381053-3463.035966Molar Entropycal/mol-K-47.80451721-97.32579485-37.76143256Mass Entropycal/gm-K-2.425658035-1.036416437-1.877350435Molar Densitykmol/cum1.31476425219.062733891.367611741Mass Densitykg/cum25.911183441790.10642927.50843827Enthalpy FlowGcal/hr-22.69043864-0.401676211-22.50624885Average MW19.7078551693.9060703220.11421622Mole Flowskmol/hr319.61842772.129787769323.1044952Mole FractionsMass Flowskg/hr6298.9936782006498.993678MG(OH)2kg/hr79.097800910N2kg/hr222.7345010.111725201222.734501CO2kg/hr0024.42147505H2Okg/hr5498.60796105559.472338O2kg/hr5.75916752705.759167527SO2kg/hr000NO2kg/hr5.39222639405.392226394MGSO3kg/hr19.23023602019.23023602MGSO4kg/hr4.21E+020651.4322242MGCO3kg/hr000MG(NO3)2kg/hr000MGSO3-3Hkg/hr000MGSO4-7Hkg/hr000MGOkg/hr040000MGHCO-01kg/hr000MG+kg/hr13.4864754500HCO3-kg/hr000ASH00CO3-kg/hr33.300311390H2SO4kg/hr010.55151015Mass FractionsVolume Flowcum/hr243.09942040.746815677236.2545495.2.2三效蒸发物料衡算表5-7三效蒸发物料衡算表三效蒸发物料衡算UnitsINOUTStream ClassL6L7RE-OUTStream Name硫酸镁溶液硫酸镁循环水PhaseLiquidLiquidVaporTemperatureC20102.56371741