6-物料平衡计算书

独山子石化年产5800吨甲硫醇项目物料平衡计算书目录第一章 物料衡算简介11.1 概述11.2物料衡算目的11.3物料衡算方法1第二章 项目物料衡算22.1 物料衡算任务22.2 各工段物料衡算22.3总流程物料衡算102.4总结15第一章 物料衡算简介1.1 概述本项目主要通过对炼油厂废气进行资源化利用，并以甲醇为主要原料，通过硫化氢甲醇法制甲硫醇工艺合成纯度为99.6%的甲硫醇。年产量为5800吨。副产甲硫醚，氢气，C2、C3。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计算出主、副产品的产量，原材料的消耗定额、“三废”排放量及组成，以及产品收率等各项经济技术指标，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。1.2物料衡算目的工艺设计中，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。1.3物料衡算方法物料衡算是根据质量守恒定律，利用某进出化工过程中某些已知物流的流量和组成，通过建立有关物料的平衡式和约束式，求出其他未知物流的流量和组成的过程。系统中物料衡算一般表达式为：系统中的积累=输入-输出+生成-消耗式中，生成或消耗项是由于化学反应而生成或消耗的量；积累量可以是正值，也可以是负值，当系统中积累量不为零时称为非稳定状态过程；积累量为零时，称为稳定状态过程。稳定状态过程时，可以简化为：输入=输出-生成+消耗对无化学反应的稳定过程，又可表示为：输入=输出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表 1-1 所示：表1-1 各衡算方法适用情况类别物料衡算形式无化学反应有化学反应总衡算式总物料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第二章 项目物料衡算本项目工艺流程分为MDEA脱硫阶段，产品分离与精制及低烃氢气利用阶段三个工段。2.1 物料衡算任务对于本厂，工艺采取年开工333天(8000小时)的连续操作，其中一年内的四五周(约30天)用于固定的停车设备检修及紧急情况处理。物料衡算的主要任务在于：(1)确定甲硫醇以及副产品的实际产量以及质量指标；(2)确定甲醇、丁烷等的循环量以及损失率等指标；(3)确定工艺中的“三废”排放量等公共经济指标；(4)各主要单元过程的物料衡算，并指导工艺设备的尺寸确定。2.2 各工段物料衡算表2-1MDEA脱硫工段总物料衡算进出口进口出口流股编号0101012001210122013001310109流股信息废气循环蒸气补充水补充MDEA废水酸性气塔顶不凝气Total Flow kmol/hr3695.1330.057862628.90630.20899814.53361415.558853698.961Total Flow kg/hr250000.5438589520.75524.90581.67846527.074324822.16Total Flow l/min91946300325. 03124523.620624.2001481.7283735011511889800Temperature306535350035.35368Pressure MPa0.1013250.51110.10.8Vapor Frac1100011Enthalpy Gcal/hr-13.68637-0.00042242-1.9681-0.0225387-0.3114261-0.0851869-14.58145Mass Flow kg/hrMDEA01.13E-05024.9055.558E-113.3826E-170.0326495H2O1250.053520.755081.642781.74383472.6134CO20000000H2S5250.056000.02331524.81170.0404198H3O+00002.5676E-0500OH-00009.4833E-1100HCO3-0000000CO32-0000000HS-00004.77904E-0500S2-00002.0798E-1600MDEAH+00001.14381E-0500CH475800.149000.004114140.20162637579.794N22767.50.035000.0006313570.0266932767.473O2500.0009002.34389E-050.001239449.99874CO1550.0025005.25827E-050.00258945154.9974H258250.0771000.001238340.08920545824.91C2H633700.07945000.003110670.11664013369.88C2H40000000C3H824850.0540000.002087330.05947382484.938C4H10-212150.0215000.0004271570.007960831214.992C4H10-1902.50.0180000.0005942150.013418902.486CH3OH0000000CH3SH0000000C2H6S0000000Mass fracMDEA02.0855E-05016.8047E-139.0057E-231.31534E-06H2O0.0050.0920281100.999563200.0190399CO20000000H2S0.0210.1038177000.0002853882.5493E-141.62838E-06H3O+00003.14354E-0700OH-00001.161E-1200HCO3-0000000CO32-0000000HS-00005.85104E-0700S2-00002.5463E-1800MDEAH+00001.40038E-0700CH40.30320.2735264005.03699E-050.42745990.3053641N20.11070.0647142007.72979E-060.1765370.111492O20.0020.00169067002.86965E-070.00302920.00201428CO0.00620.00453741006.43777E-070.009782060.00624432H20.2330.1417267001.51611E-050.38130310.2346657C2H60.13480.1460811003.80844E-054.08983E-090.135761C2H40000000C3H80.09940.0992972002.55555E-054.12626E-050.1001097C4H102-0.04860.0394741005.22973E-060.001461450.0489478C4H10-0.03610.0330854007.27505E-060.0003859610.036358CH3OH0000000CH3SH0000000C2H6S0000000总计表2-2反应与产品分离精制工段总物料衡算进出口进口出口流股编号013102040234013002260227流股信息酸性气体反应物甲醇吸收甲醇废水甲硫醇甲硫醚Total Flow kmol/hr15.5588515.167520.01999815.6002815.205560.4107442Total Flow kg/hr527.07434860.6407791281.1374731.526618.47339Total Flow l/min350115615.48880.8115069293.413165309.7725.84827Temperature C0252599.6001362.68404108.366Pressure MPa0.10.10.60.10.60.6Vapor Frac100101Enthalpy Gcal/hr-0.0851869-0.8636507-0.0011387-1.043983-0.0782127-0.0152118Mass Flow kg/hrMDEA3.3826E-1700000H2O1.7438300280.92264.7737E-170.0716417CO2000000H2S524.811700000H3O+0003.68313E-0602.9257E-13OH-0003.29299E-0602.6159E-13HCO3-000000CO32-000000HS-000000S2-000000MDEAH+000000CH40.201626300000N20.02669300000O20.001239400000CO0.0025894500000H20.089205400000C2H60.116640100000C2H4000000C3H80.059473800000C4H10-20.0079608300000C4H10-10.01341800000CH3OH04860.64077910.21478371.81056E-077.198705CH3SH0000731.49940.384471C2H6S0005.14657E-090.027242410.81857Mass fracMDEA9.0057E-2306.8047E-1300H2O0000.99956326.5257E-200.00387811CO2000000H2S2.5493E-14000.00028538800H3O+0003.14354E-0701.5837E-14OH-0001.161E-1201.4161E-14HCO3-000000CO32-000000HS-0005.85104E-0700S2-0002.5463E-1800MDEAH+0001.40038E-0700CH40.4274599005.03699E-0500N20.176537007.72979E-0600O20.0030292002.86965E-0700CO0.00978206006.43777E-0700H20.3813031001.51611E-0500C2H64.08983E-09003.80844E-0500C2H4000000C3H84.12626E-05002.55555E-0500C4H10-20.00146145005.22973E-0600C4H10-10.000385961007.27505E-0600CH3OH01102.475E-100.3896797CH3SH00000.99996280.0208121C2H6S00003.72406E-050.58563总计表2-3氢气低烃利用工段总物料衡算进出口进口出口流股编号0101012001210122013001310109流股信息塔顶不凝气丁烷废水氢气乙烷丙烷丁烷燃料气Total Flow kmol/hr3698.9611720.91226.234032889.512169.52321756.876577.7273Total Flow kg/hr24822.16100000472.61345824.915872.15810209010562.62Total Flow l/min11889800162358481.04211894790326005205202287994Temperature C35.35368-23.4095136.82318-102.3731-2.42389870.93428-102.3731Pressure MPa0.840.82.2112.2Vapor Frac1001100.9983463Enthalpy Gcal/hr-14.58145-65.04195-1.804604-2.494444-3.774671-60.72825-9.26972Mass Flow kg/hrMDEA0.03264951.5623120004.39269E-090H2O472.6134000000CO20007561.722767.47249.99755154.9973H2S0.04041981.50917E-0900.0015438400.621199922.00191H3O+005.8105630000OH-000004.39269E-090HCO3-0000000CO32-0007561.722767.47249.99755154.9973HS-0000.0015438400.621199922.00191S2-005.810563000MDEAH+000004.39269E-090CH47579.7946.8884E-1500000N22767.4732.2972E-2407561.722767.47249.99755154.9973O249.998743.9705E-2100.0015438400.621199922.00191CO154.997405.810563000H25824.9100004.39269E-090C2H63369.883.41303E-0500000C2H40007561.722767.47249.99755154.9973C3H82484.93881.8375900.0015438400.621199922.00191C4H10-21214.99257011.375.8105630000C4H10-1902.48642905.230004.39269E-090CH3OH0000000CH3SH0007561.722767.47249.99755154.9973C2H6S0000.0015438400.621199922.00191Mass fracMDEA1.31534E-061.56231E-050001.56231E-050H2O0.0190399010000CO20000000H2S1.62838E-061.5092E-14006.8833E-061.5092E-144.1587E-13H3O+0000000OH-0000000HCO3-0000000CO32-0000000HS-0000000S2-0000000MDEAH+0000000CH40.30536416.8884E-20000.003077996.8884E-200.7158942N20.1114922.2972E-29006.14894E-082.2972E-290.2620062O20.002014283.9705E-26002.02769E-073.9705E-260.00473344CO0.006244320001.25324E-0800.0146741H20.23466570011.1527E-1000C2H60.1357613.413E-10000.5738743.413E-101.4616E-07C2H40000000C3H80.10010970.000818376000.42277570.0008183765.88111E-05C4H10-20.04894780.5701137000.000254990.57011370.002083C4H10-10.0363580.4290523001.0139E-050.42905230.000550106CH3OH0000000CH3SH0000000C2H6S0000000总计2.3总流程物料衡算表2-4全流程物料衡算(进口)进出口进口流股编号01010121012202040.2340314流股信息废气补充水补充MDEA反应甲醇吸收甲醇丁烷Total Flow kmol/hr30121.8255050-40Total Flow kg/hr32.11.21.21.222Total Flow l/min110110Temperature C8989.051056.850.372808.776214.1216.24Pressure MPa213703.8119039.4496.735593.86274021.067520.365Vapor Frac74472.36916315.7550.00718015.46136920.080.823Enthalpy Gcal/hr-182.297-60.241-0.025-75.84-152.727-0.951Mass Flow kg/hrMDEA000000H2O100384.400000CO236517.33400000H2S34747.317000274021.070H3O+15987.77100000OH-13323.1400000HCO3-4410.2400000CO32-3631.9600000HS-929.5800000S2-729.6000000MDEAH+410.7300000CH4103.7600000N251.1600000O21424.190035593.8100CO1052.6219039.456.7000H2000000C2H6000000C2H4000000C3H8000000C4H10-2000000C4H10-1000000CH3OH000000CH3SH000000C2H6S000000Mass frac000000MDEA000000H2O000000CO2000000H2S000000H3O+00000520.36OH-HCO3-CO32-HS-000000S-20.4700000MDEAH+0.17100000CH40.16300000N20.07500000O20.06200000CO0.02100000H20.01700000C2H60.00400000C2H40.00300000C3H80.00200000C4H10-2000000C4H10-1000000CH3OH0.00700100CH3SH0.00511000C2H6S000000总计表2-5全流程物料衡算(出口)进出口出口流股编号03350130023002260226032903250334流股信息燃料气废水废水甲硫醇甲硫醚丁烷乙烷丙烷氢气Temperature30.530.550-101.300PressureMPa22382.955VaporFrac100100MoleFlowkmol/hr31.9561063.57352.4397472.2134.516503.803Mass Flowkg/hr1384.28419188.456944.701136935.5910279.64229282.629VolumeFlowcum/hr399.51919.3010.97435306.26715.71349.558Enthalpy Gcal/hr-2.965-72.536-3.578-144.171-6.024-18.636MassFlow kg/hrC3H6000000CH41.900.0030100382.500C2H60.680.001036496.4100C3H80.430.001047.7100.81ISOBU-010.120000.1015971.57N-BUT-010.1100013.3213309.482-MET-010.020004409.490.73N-PEN-010.030003631.900.04N-HEX-010.007000929.580N-HEP-010.005000729.600N-OCT-010.003000410.730N-NON-010.001000103.760N-DEC-01000051.160CO21368.1246.9908.9400H2O12.8519141.21944.70000K+000000H3O+000000HCO3-000000CO32-000000OH-000000N2000000O2000000AR000000C2H4000000H2000000C3H4000000CO000000CH3OH000000Mass FracC3H6000000CH40.001000.73300C2H60000.26700C3H8000000ISOBU-01000000.545N-BUT-01000000.4552-MET-01000000N-PEN-01000000N-HEX-01000000N-HEP-01000000N-OCT-01000000N-NON-01000000N-DEC-01000000CO20.9880.0020000H