08 附录4物料衡算表

年产10万吨高纯醋酸乙烯酯配套空分装置项目物料衡算相关说明1.1 物料衡算的概述本项目以乙烯和醋酸为原料，通过乙烯气相法制取醋酸乙烯酯，实现年产高纯度醋酸乙烯酯（99.9wt%）10万吨的目标，同时副产品为99.9wt%的氮气9万吨。在已确定化学生产工艺和流程后，由定性阶段转向定量阶段，通过对整个生产系统、生产车间，以及部分重要的生产单元进行物料衡算为主、副产品的产量、原料的消耗定额、“三废”排放量及组成，以及产品收率等各项经济指标，从而定量地评述初步设计所选择的工艺路线、生产方法及工艺流程在经济上是否合理、技术上是否先进，为后阶段的设计提供数据依据。在化学工程中，设计或改造工艺流程和设备、了解和控制生产操作过程、核算生产过程的经济效益、确定原材料消耗定额、确定生产过程的损耗量、对现有的工艺过程进行分析、选择最有效的工艺路线、对设备进行最佳设计以及确定最佳操作条件等都要进行物料衡算。而且，化学工程的开发与放大都以物料衡算为基础的。物料衡算是质量守恒定律的一种表现形式。凡引入某一设备的物料成分、质量或体积等于操作后所得产物的成分、质量或体积加上物料损失。1.2 物料衡算基本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：系统中的累计 = 输入-输出+反应生成-反应消耗假设系统无泄漏，有：dF/dt=FIN-FOUT+GR-CR （1-1）当系统无化学反应发生时，有：dF/dt=FIN-FOUT （1-2）在稳定状态下，有：dF/dt=FIN-FOUT=0，FIN=FOUT （1-3）注：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。物料衡算包括总质量衡算、组分衡算和元素衡算。各种衡算方法的适用情况如下表所示：表1-1 物料衡算式适用范围类别物料衡算形式无化学反应有化学反应总衡算式总质量衡算式适用适用总物质的量衡算式适用不适用组分衡算式组分质量衡算式适用不适用组分物质的量衡算式适用不适用元素原子衡算式元素原子质量衡算式适用适用元素原子物质的量衡算式适用适用由于系统中存在化学反应，我们主要采用总摩尔衡算与总质量衡算的衡算方法，同时列出每种物料组分的质量流量便于查找和计算。1.3 物料衡算的步骤（1）确定衡算范围，画出衡算示意图，标明各股物料的方向及组成。（2）定出衡算基准，对连续操作常以单位时间为基准如：kg/h，t/h；对间歇操作，常以一批物料（即一个操作循环为基准）。基准选定后，各流股按所选基准进行计算。1.4 物料衡算本项目利用乙烯和醋酸进行醋酸乙烯酯的合成。整个流程分为空分工段，反应工段，脱碳工段，精制提纯工段。现分别对醋酸乙烯酯生产的各个单元进行物料衡算。1.4.1 空分工段物料衡算图1-1空分工段工艺路线图空分工段摩尔物料衡算表进出INOUT物流101118121125126相态汽相汽相汽相汽相汽相摩尔流量kmol/hr450350.84344.94793976.4085816.81532CO2kmol/hr0.134920000O2kmol/hr94.21940.0003010.9697476.3522216.80292C2H4kmol/hr00000CH3COOHkmol/hr00000VACkmol/hr00000H2Okmol/hr0.4003350000EGDAkmol/hr00000YQkmol/hr00000CSJZkmol/hr00000CSYZkmol/hr00000N2kmol/hr351.1977350.83850.00808500ARkmol/hr4.0476110.0046793.9701140.0563650.012404MEAkmol/hr00000MEA+kmol/hr00000H3O+kmol/hr00000MEACOO-kmol/hr00000HCO3-kmol/hr00000CO3-kmol/hr00000OH-kmol/hr00000H+kmol/hr00000总计450449.0152801空分工段质量物料衡算进出INOUT物流101118121125126相态汽相汽相汽相汽相汽相质量流量kg/hr13028.029828.403189.85512445.431538.1688CO2kg/hr5.9378190000O2kg/hr3014.9080.00963831.030512443.179537.6732C2H4kg/hr00000CH3COOHkg/hr00000VACkg/hr00000H2Okg/hr7.2121440000EGDAkg/hr00000YQkg/hr00000CSJZkg/hr00000CSYZkg/hr00000N2kg/hr9838.2719828.2060.22648200ARkg/hr161.6940.186931158.59812.2516870.495531MEAkg/hr00000MEA+kg/hr00000H3O+kg/hr00000MEACOO-kg/hr00000HCO3-kg/hr00000CO3-kg/hr00000OH-kg/hr00000H+kg/hr00000总计1302813001.857511.4.1.1 空分工段空分塔精馏系统物料衡算空分塔精馏系统质量物料衡算进出INOUT物流110111121122相态液相液相汽相液相摩尔流量kmol/hr449.0153350.84344.94793993.223905CO2kmol/hr0000O2kmol/hr94.125180.0003010.9697493.1551351C2H4kmol/hr0000CH3COOHkmol/hr0000VACkmol/hr0000H2Okmol/hr0000EGDAkmol/hr0000YQkmol/hr0000CSJZkmol/hr0000CSYZkmol/hr0000N2kmol/hr350.8465350.83850.0080850.00E+00ARkmol/hr4.0435640.0046793.9701140.06876985MEAkmol/hr0000MEA+kmol/hr0000H3O+kmol/hr0000MEACOO-kmol/hr0000HCO3-kmol/hr0000CO3-kmol/hr0000OH-kmol/hr0000H+kmol/hr0000总计449.0153449.0152801空分塔精馏系统质量物料衡算进出INOUT物料110111121122相态液相液相汽相液相质量流量kg/hr13001.869828.403189.85512983.59976CO2kg/hr0000O2kg/hr3011.8930.00963831.030512980.85254C2H4kg/hr0000CH3COOHkg/hr0000VACkg/hr0000H2Okg/hr0000EGDAkg/hr0000YQkg/hr0000CSJZkg/hr0000CSYZkg/hr0000N2kg/hr9828.4339828.2060.2264824.82E-14ARkg/hr161.53230.186931158.59812.74721809MEAkg/hr0000MEA+kg/hr0000H3O+kg/hr0000MEACOO-kg/hr0000HCO3-kg/hr0000CO3-kg/hr0000OH-kg/hr0000H+kg/hr0000总计13001.8613001.857511.4.2反应工段物料衡算图1-2反应工段工艺路线图反应工段摩尔物料衡算进出INOUT物流125201202223425224221相态汽相汽相液相汽相液相液相汽相摩尔流量kmol/hr76.40858413.9564314.25132002.15241154.841477602.5431992291.86403CO2kmol/hr0000.056635840.058411540.000152270.16181668O2kmol/hr76.352220068.840104900.0056012277.9938136C2H4kmol/hr0413.956401909.1197402.584571142186.15294CH3COOHkmol/hr00314.25130.00E+00121.326273301.4669740.00E+00VACkmol/hr00016.98804710132.4391718.564823H2Okmol/hr0001.4176797933.3154073165.8601032.99518382EGDAkmol/hr0001.13E-190.092574840.103129523.22E-19YQkmol/hr0000.8786220500.009848171.08763265CSJZkmol/hr0000.0015484100.007638930.00175006CSYZkmol/hr0000.0007576100.065619220.00080959N2kmol/hr0000000ARkmol/hr0.056365004.8492648700.000390414.90524096MEAkmol/hr0004.09E-0800.00E+000.00E+00MEA+kmol/hr000001.43E-080H3O+kmol/hr00000.00E+001.25E-080MEACOO-kmol/hr000001.49E-150HCO3-kmol/hr00000.00029472.68E-080CO3-kmol/hr00000.048515791.92E-160OH-kmol/hr0000000H+kmol/hr0000000总计2961.6101652894.407229反应工段质量物料衡算进出INOUT物流125201202223425224221相态汽相汽相液相汽相液相液相汽相质量流量kg/hr2445.43111613.0318871.657483.93517905.1689432588.187565728.923CO2kg/hr0002.492531932.57068010.00670137.12151979O2kg/hr2443.179002202.8007500.179232372495.70844C2H4kg/hr011613.03053557.9871072.506938661329.81CH3COOHkg/hr0018871.63.67E-047285.9532718103.86361.04E-03VACkg/hr0001462.50845011401.74651598.25378H2Okg/hr00025.5398983600.1863912988.016253.9590751EGDAkg/hr0001.65E-1713.529164615.0716584.71E-17YQkg/hr00038.706077900.4338429247.9136549CSJZkg/hr0000.114705600.565887660.12964351CSYZkg/hr0000.066749905.781467520.07132981N2kg/hr0000000ARkg/hr2.25168700193.71843300.01559618195.954566MEAkg/hr0002.50E-0601.63E-066.94E-24MEA+kg/hr000008.87E-070H3O+kg/hr00002.25E-132.38E-070MEACOO-kg/hr000001.55E-130HCO3-kg/hr00000.017982061.64E-060CO3-kg/hr00002.91144681.15E-140OH-kg/hr0000000H+kg/hr0000000总计98319.164798317.110551.4.2.1反应工段反应器物料衡算反应器摩尔物料衡算进出INOUT物流209218相态汽相汽相摩尔流量kmol/hr2961.610132894.40723CO2kmol/hr0.115194760.16196898O2kmol/hr145.19232877.9994148C2H4kmol/hr2323.0762188.73751CH3COOHkmol/hr435.577657301.466991VACkmol/hr16.9879493151.003993H2Okmol/hr34.7819141168.855287EGDAkmol/hr0.092574870.10312952YQkmol/hr0.878576771.09748081CSJZkmol/hr0.001548390.00938899CSYZkmol/hr0.000757590.0664288N2kmol/hr00ARkmol/hr4.905631374.90563137MEAkmol/hr0.00E+000.00E+00MEA+kmol/hr00H3O+kmol/hr00MEACOO-kmol/hr00HCO3-kmol/hr00CO3-kmol/hr00OH-kmol/hr00H+kmol/hr00总计2961.610132894.40723反应器质量物料衡算进出INOUT物流209218相态汽相汽相质量流量kg/hr98317.110698317.1106CO2kg/hr5.069698237.12822226O2kg/hr4645.980252495.88768C2H4kg/hr65171.016461402.3169CH3COOHkg/hr26157.553418103.8646VACkg/hr1462.5000313000.0002H2Okg/hr626.6059223041.97528EGDAkg/hr13.529168815.071658YQkg/hr38.704082848.3474979CSJZkg/hr0.114703770.69553117CSYZkg/hr0.066748285.85279732N2kg/hr00ARkg/hr195.970162195.970162MEAkg/hr2.50E-062.50E-06MEA+kg/hr00H3O+kg/hr00MEACOO-kg/hr00HCO3-kg/hr00CO3-kg/hr00OH-kg/hr00H+kg/hr00总计98317.110698317.11061.4.3脱碳工段物料衡算图1-3脱碳工段工艺路线图10年产10万吨高纯醋酸乙烯酯配套空分装置项目脱碳工段摩尔物料衡算进出INOUT物流301302407303308310315321322相态汽相液相汽相液相汽相液相液相汽相汽相摩尔流量kmol/hr1489.71162155.63315408351.4432500616.215072437.0942613289.8615131200CO2kmol/hr0.1051808400.6263360200.000119850.00E+000.00E+000.00E+000.00E+00O2kmol/hr50.695978900.9068835100.021046770.001043080.0039193310.034587741.5422701C2H4kmol/hr1420.9994101.8348106901.267422760.509930590.76512238276.3264811143.96621CH3COOHkmol/hr0.00E+0000.00E+0000.00E+007.87E-054.20E-068.28E-093.43E-08VACkmol/hr12.06713501.0925044800.066737370.02505490.043564672.5339594410.490359H2Okmol/hr1.94686948150.46546388300.0546567315.621255131.26749920.089220690.36936545EGDAkmol/hr2.10E-1901.81E-0902.67E-141.81E-09000YQkmol/hr0.7069612200.0045521500.031925270.05754870.003798170.12028060.49795063CSJZkmol/hr0.0011375408.10E-0501.76E-052.86E-051.04E-050.000226070.00093589CSYZkmol/hr0.0005262300.000109201.71E-052.43E-055.26E-060.000114560.00047425N2kmol/hr000000000ARkmol/hr3.1884066200.7023413700.001306476.69E-050.000301880.756642543.13243053MEAkmol/hr7.38E-26005003.537862099.89E-094.09E-08MEA+kmol/hr0000000.7404478300H3O+kmol/hr000001.74E-069.01E-1200MEACOO-kmol/hr0000000.7216944900HCO3-kmol/hr000001.74E-060.0009419700CO3-kmol/hr000009.23E-120.0087207100OH-kmol/hr0000000.0003687300H+kmol/hr000000000总计1545.3447731544.61409711年产10万吨高纯醋酸乙烯酯配套空分装置项目脱碳工段质量物料衡算进出INOUT物流301302407303308310315321322相态汽相液相汽相液相汽相液相液相汽相汽相质量流量kg/hr42723.8270.2292238.774701845.87744.4262447300.465792926.6005668328.4005134478.812CO2kg/hr4.62898786027.56492300.005274411.67E-031.12E-066.01E-102.49E-09O2kg/hr1622.21049029.019184200.67347140.03337740.12541388321.0947661329.30279C2H4kg/hr39864.3765051.4733386035.55597414.305470521.46455967751.9967832092.5536CH3COOHkg/hr6.77E-0404.31E-0301.00E-054.72E-032.52E-044.97E-072.06E-06VACkg/hr1038.86496094.054191205.745449842.156986953.75050125218.149683903.119623H2Okg/hr35.0733988270.22928.38546214540.45840.98465622281.421284563.2927541.607335726.65422205EGDAkg/hr3.06E-1702.65E-0703.90E-122.65E-07000YQkg/hr31.143875700.2005363701.406408932.535202060.167321195.298740621.9362987CSJZkg/hr0.0842682806.00E-0301.30E-032.12E-037.69E-040.016746840.06933037CSYZkg/hr0.0463643700.0096208701.51E-032.14E-034.63E-040.010093090.04178447N2kg/hr000000000ARkg/hr127.370468028.05713300.052190722.67E-030.0120594630.2263563125.134335MEAkg/hr4.51E-2400305.418600216.1057776.04E-072.50E-06MEA+kg/hr00000045.975227900H3O+kg/hr000003.31E-051.71E-1000MEACOO-kg/hr00000075.118386700HCO3-kg/hr000001.06E-040.0574766700CO3-kg/hr000005.54E-100.5233323300OH-kg/hr0000000.0062713400H+kg/hr000000000总计44078.6808644078.705121.4.3.1脱碳工段T0302物料衡算CO2吸收T0302摩尔物料衡算进出INOUT物流313318314319相态汽相液相液相汽相摩尔流量kmol/hr1492.68645407.282072370.9426131528.29459CO2kmol/hr0.731357230.00E+000.00E+000.00E+00O2kmol/hr51.58077250.059309590.0391933151.6008888C2H4kmol/hr1421.056879.992557267.65122381423.3982CH3COOHkmol/hr0.00E+004.18E-054.20E-054.09E-06VACkmol/hr13.0678470.769590390.4356466613.4017908H2Okmol/hr1.7364191345.767082312.67499234.8544053EGDAkmol/hr1.59E-14000YQkmol/hr0.622038280.53911580.037981661.12317242CSJZkmol/hr0.001172330.000319570.000103810.00138808CSYZkmol/hr0.000594060.00029855.26E-050.00084N2kmol/hr0000ARkmol/hr3.889374590.004524410.003018793.89088021MEAkmol/hr036.894960735.37862090.02297294MEA+kmol/hr06.668694787.404478340H3O+kmol/hr05.11E-109.01E-110MEACOO-kmol/hr06.459361657.216944920HCO3-kmol/hr00.039781910.009419670CO3-kmol/hr00.083110130.087207080OH-kmol/hr00.003318690.003687310H+kmol/hr0000总计1899.9685211899.237203CO2吸收T0302质量物料衡算进出INOUT物流313318314319相态汽相液相汽相质量流量kg/hr42887.91189949.104399266.0056643571.0105CO2kg/hr32.18688532.35E-041.12E-051.95E-03O2kg/hr1650.522821.897835631.254138841651.16652C2H4kg/hr39865.9884280.328803214.64559639931.6716CH3COOHkg/hr2.55E-042.51E-032.52E-032.46E-04VACkg/hr1125.016766.254375137.50501251153.76606H2Okg/hr31.28207626229.090795632.92754627.911871EGDAkg/hr2.32E-12000YQkg/hr27.402751723.74975471.6732119149.4792945CSJZkg/hr0.08684530.023673270.007690110.10282846CSYZkg/hr0.052340050.026299864.63E-030.07400915N2kg/hr0000ARkg/hr155.3727360.180741020.12059456155.432883MEAkg/hr02253.681452161.057771.40327237MEA+kg/hr0414.066661459.7522790H3O+kg/hr09.72E-091.71E-090MEACOO-kg/hr0672.329956751.1838670HCO3-kg/hr02.427400350.574766690CO3-kg/hr04.987463525.233323260OH-kg/hr00.056443970.062713390H+kg/hr0000总计52837.0161852837.016181.4.4精制提纯工段图1-4精制提纯工段工艺路线图精制提纯工段摩尔物料衡算进出INOUT物流224407412422427425相态液相汽相液相液相液相液相摩尔流量kmol/hr602.545.6331162.32369150.39128.1824154.8477CO2kmol/hr0.000150.62633600.00E+002.09050130.00198710.05841154O2kmol/hr0.0056010.9068800.003484600C2H4kmol/hr2.58451.834810600.880555700CH3COOHkmol/hr301.46690.00E+0019.65007136.78243298.84119121.32VACkmol/hr132.439171.09250448128.28011.0133670.00E0H2Okmol/hr165.8600.46546814.3262109.609725.154233.31540EGDAkmol/hr0.103129521.81E-099.39E-160.00E+002.252295780.09257484YQkmol/hr0.0098480.0045523.12E-090.0117916700CSJZkmol/hr0.007638938.10E-050.005542780.0003669600CSYZkmol/hr0.0656220.00010920.0616010.0010879.22E-100N2kmol/hr000000ARkmol/hr0.0003900.7023400.002437500MEAkmol/hr2.67E-0800000MEA+kmol/hr0.00E+0000000H3O+kmol/hr1.25E-0808.52E-086.29E-051.26E-180.00E+00MEACOO-kmol/hr1.49E-1500000HCO3-kmol/hr2.68E-0808.52E-086.29E-051.805390.0002947CO3-kmol/hr1.92E-1601.83E-163.62E-140.12724670.0485159OH-kmol/hr000000H+kmol/hr000000总计602.543601.376767精制提纯工段质量物料衡算进出INOUT物流224.0407.0412.0422.0427.0425.0相态液相汽相液相液相液相质量流量kg/hr32588.2238.812487.74388.36835.97905.2CO2kg/hr0.027.60.092.00.12.6O2kg/hr0.229.00.00.10.00.0C2H4kg/hr72.551.50.024.70.00.0CH3COOHkg/hr18103.90.01180.02208.95935.77286.0VACkg/hr11401.794.111043.787.20.00.0H2Okg/hr2988.08.4258.11974.7453.2600.2EGDAkg/hr15.10.00.00.0329.213.5YQkg/hr0.40.20.00.50.00.0CSJZkg/hr0.60.00.40.00.00.0CSYZkg/hr5.80.05.40.10.00.0N2kg/hr0.00.00.00.00.00.0ARkg/hr0.028.10.00.10.00.0MEAkg/hr0.00.00.00.00.00.0MEA+kg/hr0.00.00.00.00.00.0H3O+kg/hr0.00.00.00.00.00.0MEACOO-kg/hr0.00.00.00.00.00.0HCO3-kg/hr0.00.00.00.0110.20.0CO3-kg/hr0.00.00.00.07.62.9OH-kg/hr0.00.00.00.00.00.0H+kg/hr0.00.00.00.00.00.0总计32588.231855.81.4.4.1精制提纯工段T0405物料衡算粗VACT0405摩尔物料衡算进出INOUT物流404.00409.00405.00411.00相态液相液相汽相液相摩尔流量kmol/hr193.9113.1641.41165.65CO2kmol/hr0.000.090.090.00O2kmol/hr0.000.020.020.00C2H4kmol/hr2.310.322.630.00CH3COOHkmol/hr22.980.010.0222.98VACkmol/hr152.410.0724.20128.28H2Okmol/hr16.1112.6414.4214.33EGDAkmol/hr0.000.000.000.00YQkmol/hr0.020.000.020.00CSJZkmol/hr0.010.000.000.01CSYZkmol/hr0.070.000.000.06N2kmol/hr0.000.000.000.00ARkmol/hr0.000.020.020.00MEAkmol/hr0.000.000.000.00MEA+kmol/hr0.000.000.000.00H3O+