2-附录二 能量衡算

中海壳牌石化年产20万吨醋酸乙烯酯项目 能量衡算计算书目录1.1总述11.2 热量衡算原理11.3 热量衡算任务21.4 热量衡算21.4.1.醋酸合成工段21.4.2.醋酸乙烯酯合成工段81.4.3.醋酸乙烯酯精制工段141.5总结321.1总述本项目拟建一套年产20万吨醋酸乙烯酯的装置，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热量的消耗、释放和转化。其中的热量变换数量关系可以由热量衡算求得，对于新设计的车间，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。总而言之，通过下述热量衡算，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。1.2 热量衡算原理工程依据化工设计中关于热量衡算的基本思想和要求，遵循基本规范与实际工艺相结合的原则，进行热量衡算书的编制。其中一个主要依据是热量平衡方程：其中，表示输入设备热量的总和；表示输出设备热量的总和；表示损失热量的总和。对于连续系统：其中，设备的热负荷；输入系统的机械能；离开设备的各物料焓之和；进入设备的各物料焓之和。在进行全厂热量衡算时，是以单元设备为基本单位，考虑由机械能转换、化学反应释放和单纯的物理变化带来的热量变化。最终对全工艺段进行系统级的热量平衡计算，进而用于指导节能降耗设计工作。1.3 热量衡算任务在进行杂质脱除并资源化利用装置的热量衡算中，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。1.4 热量衡算1.4.1.醋酸合成工段1.4.1.1. 换热器热量衡算（1）E0101反应产物冷却器表1-3-1 热负荷表WQHeat Duty（Watt）0-5769240.8表1-3-2 流股焓变计算表InOut物流编号S0002S0003Temperature K593.15333.15Pressure N/sqm1000000900000Vapor Frac10.2143045Mole Flow（kmol/sec）0.15281380.1528138Mass Flow（kg/sec）7.9359757.935975Volume Flow（cum/sec）0.72620570.1074113Enthalpy（Watt）-50833000-56602000表1-3-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-5769240.8-50833000-56602000240.8（2）E0102产品加热器表1-4-1 热负荷表WQHeat Duty（Watt）0426727.293表1-4-2 流股焓变计算表InOut物流编号S0004S0005Temperature K333.1499376.6942Pressure N/sqm900000850000Vapor Frac00.00774868Mole Flow（kmol/sec）0.12006510.1200651Mass Flow（kg/sec）7.003567.00356Volume Flow（cum/sec）0.006950680.0107349Enthalpy（Watt）-52855000-52428000表1-4-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0426727.293-52855000-52428000272.707（3）E0103产品冷却器表1-5-1 热负荷表WQHeat Duty（Watt）0-426731.371表1-5-2 流股焓变计算表InOut物流编号S0007S0008Temperature K390.6023343.15Pressure N/sqm10000050000Vapor Frac00Mole Flow（kmol/sec）0.11323820.1132382Mass Flow（kg/sec）6.7864256.786425Volume Flow（cum/sec）0.00717570.00670051Enthalpy（Watt）-50871000-51298000表1-5-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-426731.371-50871000-51298000-268.6291.4.1.2. 原料混合器M0101表2-1-1 热负荷表WQHeat Duty（Watt）00表2-1-2流股焓变计算表InOut物流编号COCH3OHS0104S0001Temperature K593.15593.15674.2213600.4103Pressure N/sqm1000000100000010000001000000Vapor Frac1111Mole Flow（kmol/sec）0.11666670.11388890.03522240.265778Mass Flow（kg/sec）3.267883.6449891.0231067.935975Volume Flow（cum/sec）0.5769030.54607510.19771061.319138Enthalpy（Watt）-11877000-21086000-4041900-37005000表2-1-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error00-32963000-41046900-51.9721.4.1.3. 压缩机热量衡算表3-1-1 热负荷表（1）C0101循环压缩机WQHeat Duty（Watt）420051.9720表3-1-2 流股焓变计算表InOut物流编号S0103S0104Temperature K331.8987674.2213Pressure N/sqm1000001000000Vapor Frac11Mole Flow（kmol/sec）0.03522240.0352224Mass Flow（kg/sec）1.0231061.023106Volume Flow（cum/sec）0.97067210.1977106Enthalpy（Watt）-4461900-4041900表3-1-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error420051.9720-4461900-4041900-361.311.4.1.4. 泵热量衡算（1）P0101醋酸产品泵表4-1-1 热负荷表WQHeat Duty（Watt）9361.312570表4-1-2 流股焓变计算表InOut物流编号S0010S0011Temperature K343.15343.8551Pressure N/sqm50000820000Vapor Frac00Mole Flow（kmol/sec）0.11111110.1111111Mass Flow（kg/sec）6.6589456.658945Volume Flow（cum/sec）0.006574650.00658087Enthalpy（Watt）-50334000-50325000表4-1-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error9361.312570-50334000-50325000-7191.4.1.5. 反应器热量衡算（1）R0101醋酸合成反应器表5-1-1 热负荷表WQHeat Duty（Watt）0-13827281表5-1-2 流股焓变计算表InOut物流编号S0001S0002Temperature K600.4103593.15Pressure N/sqm10000001000000Vapor Frac11Mole Flow（kmol/sec）0.2657780.1528138Mass Flow（kg/sec）7.9359757.935975Volume Flow（cum/sec）1.3191380.7262057Enthalpy（Watt）-37005000-50833000表5-1-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-13827281-37005000-50833000200（2）V0101醋酸闪蒸罐表5-2-1 热负荷表WQHeat Duty（Watt）00表5-2-2 流股焓变计算表InOut物流编号S0003S0101S0004Temperature K333.15333.1499333.1499Pressure N/sqm900000900000900000Vapor Frac0.214304510Mole Flow（kmol/sec）0.15281380.03274860.1200651Mass Flow（kg/sec）7.9359750.93241437.00356Volume Flow（cum/sec）0.10741130.10046060.00695068Enthalpy（Watt）-56602000-3746800-52855000表5-2-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error00-56602000-566018002001.4.1.6. 塔热量衡算（1）T0101醋酸精制塔表6-1-1 热负荷表WQHeat Duty（Watt）07678877表6-1-2 流股焓变计算表InOut物流编号S0005S0006S0007Temperature K374.8697349.9785390.6401Pressure N/sqm850000100000100000Vapor Frac0.0075189910Mole Flow（kmol/sec）0.12301530.01014010.1128752Mass Flow（kg/sec）7.2178150.45514756.762667Volume Flow（cum/sec）0.01090860.29187850.00715103Enthalpy（Watt）-54130000-3006500-50704000表6-1-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error07678877-54130000-5371950090901.4.2.醋酸乙烯酯合成工段1.4.2.1. 压缩机热量衡算（1）C0201循环气体压缩机表2-1-1 热负荷表WQHeat Duty（Watt）1914659.380表2-1-2 流股焓变计算表InOut物流编号S0105S0110S0114Temperature K313.15340.5457371.238Pressure N/sqm450000750000830000Vapor Frac111Mole Flow（kmol/sec）0.63588790.18367830.8195697Mass Flow（kg/sec）19.425135.20017224.6254Volume Flow（cum/sec）3.6001670.67472242.977102Enthalpy（Watt）-572700093061305493550表2-1-3热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error1914659.38035791305493550-239.381.4.2.2. 换热器热量衡算（1）E0201 反应产物第一冷凝器表2-2-1 热负荷表WQHeat Duty（Watt）01668904.59表2-2-2 流股焓变计算表InOut物流编号PRODUCTS0118Temperature K421.1221444.375Pressure N/sqm800000780000Vapor Frac11Mole Flow（kmol/sec）1.1223311.122331Mass Flow（kg/sec）42.1586742.15867Volume Flow（cum/sec）4.7343795.157447Enthalpy（Watt）-119390000-117720000表2-2-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error01668904.59-119390000-1177200001095.41（2）E0202反应产物第二冷凝器表2-2-1 热负荷表WQHeat Duty（Watt）0-2667719.01表2-2-2 流股焓变计算表InOut物流编号S0118S0119Temperature K429411.4874Pressure N/sqm760000740000Vapor Frac10.9533678Mole Flow（kmol/sec）1.1729611.172961Mass Flow（kg/sec）45.1807745.18077Volume Flow（cum/sec）5.3176954.990071Temperature K-154590000-157260000表2-2-3热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-2667719.01-154590000-157260000-2280.99（4）E0201A第一热交换器表2-4-1 热负荷表WQHeat Duty（Watt）01668904.59表2-4-2流股焓变计算表InOut物流编号S0115S0116Temperature K421.1221444.375Pressure N/sqm800000780000Vapor Frac11Mole Flow（kmol/sec）1.1223311.122331Mass Flow（kg/sec）42.1586742.15867Volume Flow（cum/sec）4.7343795.157447Enthalpy（Watt）-119390000-117720000表2-4-3热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error01668904.59-119390000-1177200001095.41（5）E0202A第二热交换器表2-5-1热负荷表WQHeat Duty（Watt）02667719.01表2-5-2 流股焓变计算表InOut物流编号S0112S0120Temperature K353.0138419Pressure N/sqm820000800000Vapor Frac11Mole Flow（kmol/sec）0.78758770.7875877Mass Flow（kg/sec）23.2381723.23817Volume Flow（cum/sec）2.7417373.37751Enthalpy（Watt）1504900017716800表2-5-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error02667719.01150490001771680080.99（6）E0203A气体预热器表2-6-1热负荷表WQHeat Duty（Watt）0419010.895表2-6-2 流股焓变计算表InOut物流编号S0116S0117Temperature K444.375450Pressure N/sqm780000760000Vapor Frac11Mole Flow（kmol/sec）1.1223311.122331Mass Flow（kg/sec）42.1586742.15867Volume Flow（cum/sec）5.1574475.370621Enthalpy（Watt）-117720000-117310000表2-6-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0419010.895-117720000-117310000-9010.8951.4.2.3. 反应器热量衡算（1）Reaction 醋酸乙烯酯合成反应器 表3-1-1热负荷表WQHeat Duty（Watt）0-35626678表3-1-2 流股焓变计算表InOut物流编号FEEDPRODUCTTemperature K444.4039451.15Pressure N/sqm780000780000Vapor Frac11Mole Flow（kmol/sec）1.2167751.172961Mass Flow（kg/sec）45.1807745.18077Volume Flow（cum/sec）5.6128195.471931Enthalpy（Watt）-117300000-152920000表3-1-3热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-35626678-117300000-1529200006678（2）R0101A平推流反应器 表3-2-1 热负荷表WQHeat Duty（Watt）0-34895865.8表3-2-2流股焓变计算表InOut物流编号FEEDPRODUCTTemperature K444.4039451.15Pressure N/sqm780000780000Vapor Frac11Mole Flow（kmol/sec）1.2167751.174161Mass Flow（kg/sec）45.1807745.18077Volume Flow（cum/sec）5.6128195.478211Enthalpy（Watt）-117300000-152190000表3-2-3热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-34895865.8-117300000-1521900005865.8（3）R0101B化学计量反应器 表3-3-1 热负荷表WQHeat Duty（Watt）0-730812.299表3-3-2 流股焓变计算表InOut物流编号FEEDPRODUCTTemperature K451.15451.15Pressure N/sqm780000780000Vapor Frac11Mole Flow（kmol/sec）1.1741611.172961Mass Flow（kg/sec）45.1807745.18077Volume Flow（cum/sec）5.4782115.471931Enthalpy（Watt）-152190000-152920000表3-3-3热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-730812.299-152190000-152920000812.2991.4.2.4. 塔热量衡算（1）T0201醋酸蒸发塔表4-1-1热负荷表WQHeat Duty（Watt）09203109.84表4-1-2 流股焓变计算表InOut物流编号CH3COOHS0208S0120S0115S0213Temperature K343.8551400.3078419421.1221423.8554Pressure N/sqm820000850000800000800000800000Vapor Frac00110Mole Flow（kmol/sec）0.11111110.23496870.78758771.1223310.0113366Mass Flow（kg/sec）6.65894512.90623.2381742.158670.6444472Volume Flow（cum/sec）0.006580870.01408293.377514.7343790.000773615Enthalpy（Watt）-50325000-10059000017716800-119390000-4600000表4-1-3热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error09203109.84-133198200-1239900005090.161.4.3.醋酸乙烯酯精制工段1.4.3.1. 闪蒸罐热量衡算（1）V0301G脱气槽表1-1-1 热负荷表WQHeat Duty（Watt）00表1-1-2 流股焓变计算表InOut物流编号S0211S0212S0104S0113S0201S0201BTemperature K293.15258.15329.8926313.15313.8043313.8043Pressure N/sqm115000110000510000450000120000120000Vapor Frac000001Mole Flow（kmol/sec）0.003325140.004957150.65800220.04566320.63884980.0730973Mass Flow（kg/sec）0.18379830.335523132.596052.30990132.93322.492057Volume Flow（cum/sec）0.0001898710.0003499470.0363250.002434180.03382381.576663Enthalpy（Watt）-1184700-1603100-225830000-17135000-243440000-2308200表1-1-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error00-245752800-24574820046001.4.3.2. 液液分离器热量衡算（1）V0301A第一分离器表2-1-1 热负荷表WQHeat Duty（Watt）0-22502.0754表2-1-2 流股焓变计算表InOut物流编号S0219S0217S0221S0225Temperature K283.15308.15311.7036311.7036Pressure N/sqm120000120000120000120000Vapor Frac0000Mole Flow（kmol/sec）0.006874180.51164080.40580160.1127133Mass Flow（kg/sec）0.4681234.0207232.359722.129106Volume Flow（cum/sec）0.0005023090.0373180.03595420.00223304Enthalpy（Watt）-2203200-163980000-134860000-31338000表2-1-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-22502.0754-166183200-1661980007702.0754（2）V0301B第二分离器表2-2-1 热负荷表WQHeat Duty（Watt）0-6699.89244表2-2-2 流股焓变计算表InOut物流编号S0310S0309S030X1S0311S0312Temperature K293.15283.15303.15293.1984293.1984Pressure N/sqm140000140000110000140000140000Vapor Frac00000Mole Flow（kmol/sec）0.08459850.00433290.0001905260.08313250.00598946Mass Flow（kg/sec）6.7261250.28208620.01426016.9078730.1145989Volume Flow（cum/sec）0.007251480.0003069771.56678E-050.007472710.00011725Enthalpy（Watt）-28606000-1329000-62273.32-28315000-1689200表2-2-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-6699.89244-29997273.3-30004200-226.807561.4.3.3. 换热器热量衡算（1）E0301反应产物第三冷凝器表3-1-1 热负荷表WQHeat Duty（Watt）0-17584372.1表3-1-2流股焓变计算表InOut物流编号S0119S0101Temperature K411.4874333.15Pressure N/sqm740000690000Vapor Frac0.95336780.5662741Mole Flow（kmol/sec）1.1729611.172961Mass Flow（kg/sec）45.1807745.18077Volume Flow（cum/sec）4.9900712.612902Enthalpy（Watt）-157260000-174850000表3-1-3热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-17584372.1-157260000-174850000-5627.9（2）E0302一级闪蒸表3-2-1热负荷表WQHeat Duty（Watt）0-176720.946表3-2-2 流股焓变计算表InOut物流编号S0201BS0209S011Temperature K313.8043293.15293.15Pressure N/sqm120000115000115000Vapor Frac110Mole Flow（kmol/sec）0.07309730.06977210.00332514Mass Flow（kg/sec）2.4920572.3082590.1837983Volume Flow（cum/sec）1.5766631.4662690.000189871Enthalpy（Watt）-2308200-1300200-1184700表3-2-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-176720.946-2308200-248490020.946（3）E0303二级闪蒸表3-3-1热负荷表WQHeat Duty（Watt）0-281477.651表3-3-2 流股焓变计算表InOut物流编号S0209S0210S0212Temperature K293.15258.15258.15Pressure N/sqm115000110000110000Vapor Frac110Mole Flow（kmol/sec）0.06977210.0648150.00495715Mass Flow（kg/sec）2.3082591.9727360.3355231Volume Flow（cum/sec）1.4662691.2522350.000349947Enthalpy（Watt）-130020021431.11-1603100表3-3-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-281477.651-1300200-1581668.898.761（4）E0304第三热交换器表3-4-1 热负荷表WQHeat Duty（Watt）0-2528570.43表3-4-2流股焓变计算表InOut物流编号S0103S0105S0113Temperature K357.3311313.15313.15Pressure N/sqm500000450000450000Vapor Frac110Mole Flow（kmol/sec）0.68155110.63588790.0456632Mass Flow（kg/sec）21.7350319.425132.309901Volume Flow（cum/sec）3.9724453.6001670.00243418Enthalpy（Watt）-20333000-5727000-17135000表3-4-3热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-2528570.43-20333000-22862000-429.57（5）E0305醋酸分离塔塔顶一次闪蒸表3-5-1热负荷表WQHeat Duty（Watt）0-19291596.6表3-5-2流股焓变计算表InOut物流编号S0215S0218S0216Temperature K343.5634315.15315.15Pressure N/sqm130000125000125000Vapor Frac110Mole Flow（kmol/sec）0.53587850.02423770.5116408Mass Flow（kg/sec）35.057441.03672534.02072Volume Flow（cum/sec）11.469870.50158940.0378557Enthalpy（Watt）-146630000-2139900-163790000表3-5-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-19291596.6-146630000-165929900-8303.4（6）E0306醋酸分离塔产品冷凝器表3-6-1热负荷表WQHeat Duty（Watt）0-188667.986表3-6-2 流股焓变计算表InOut物流编号S0216S0217Temperature K315.15308.15Pressure N/sqm125000120000Vapor Frac00Mole Flow（kmol/sec）0.51164080.5116408Mass Flow（kg/sec）34.0207234.02072Volume Flow（cum/sec）0.03785570.037318Enthalpy（Watt）-163790000-163980000表3-6-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-188667.986-163790000-163980000-1332.014（7）E0307醋酸分离塔塔顶一次闪蒸表3-7-1热负荷表WQHeat Duty（Watt）0-290063.902表3-7-2流股焓变计算表InOut物流编号S0218S0220S0219Temperature K315.15283.15283.15Pressure N/sqm125000120000120000Vapor Frac110Mole Flow（kmol/sec）0.02423770.01736350.00687418Mass Flow（kg/sec）1.0367250.5686050.46812Volume Flow（cum/sec）0.50158940.33733410.000502309Enthalpy（Watt）-2139900-226670-2203200表3-7-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-290063.902-2139900-242987093.902（8）E0308醋酸乙烯精制塔塔顶一次闪蒸表3-8-1热负荷表WQHeat Duty（Watt）0-2914839.18表3-8-2 流股焓变计算表InOut物流编号S0305S0307S0306Temperature K353.255333.15333.15Pressure N/sqm150000145000145000Vapor Frac110Mole Flow（kmol/sec）0.09147560.00687710.0845985Mass Flow（kg/sec）7.0902570.36413246.726125Volume Flow（cum/sec）1.7310040.12867940.00769898Enthalpy（Watt）-26350000-1169400-28096000表3-8-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-2914839.18-26350000-29265400-560.82（9）E0309醋酸乙烯精制塔塔顶二次闪蒸表3-9-1热负荷表WQHeat Duty（Watt）0-174006.222表3-9-2 流股焓变计算表InOut物流编号S0307S0308S0309Temperature K333.15283.15283.15Pressure N/sqm145000140000140000Vapor Frac110Mole Flow（kmol/sec）0.00687710.00254420.0043329Mass Flow（kg/sec）0.36413240.08204620.2820862Volume Flow（cum/sec）0.12867940.04228140.000306977Enthalpy（Watt）-1169400-14396.16-1329000表3-9-3 热量平衡计算表一览W（Watt）Q（Watt）Hin（Watt）Hout（Watt）Error0-174006.222-1169400-1343396.1610.062（10）E0310醋酸乙烯精制塔产品冷凝器表3-10-1热负荷表WQHeat Duty（Watt）0-510118.313表3-10-2 流股焓变计算表InOut物流编号S0306S0310Temperature K333.15293.15Pressure N/sqm145000140000Vapor Frac00Mole Flow（kmol/sec）0.08459850.0845985Mass Flo