pro2_常压塔模拟流程运算

常压系统流程模拟计算一、工艺流程简述常减压装置是我国最基本的原油加工的装置之一。

主要包括换热器系统、常压系统、减压系统。

常压系统是原油通过换热网络换热到一定温度后，再进到常压加热炉加热到要求的温度，常压加热炉要求的出口温度与原油的性质，拔出率有关，一般要求常压炉出口汽化率大于常压塔所有侧线产品一定的比例，这个比例叫过汽化率，一般为2～5%（wt）。

常压加热炉出口达到一定温度和汽化率的原油，进到常压塔的进料段，油汽往上走，常压塔侧线抽出，一至四个左右的侧线产品，为控制侧线产品的干点，抽出的侧线产品进到侧线产品汽提塔中汽提，冷却后出装置，常压塔进料产品与出料产品之间的焓差，叫剩余热，为回叫这部份热量，常压塔的各产品段有中段回流抽出，与冷原油换热后返回塔内。

塔底抽出常压重油，为提高拔出率和减少塔底结焦，有塔底还通入一定量的蒸汽。

常压系统分离其工流流程如图1所示，所涉及主要模块有原油混合器（M1）、常压加热炉（E1）、常压塔（T1）。

图1 常压系统模拟计算流程图1进常压炉原油； 2进常压塔原油；W塔顶切水；GN常顶油；CC1常一线去汽提塔；S1常一线汽提蒸汽CC2常二线去汽提塔；S2常二线汽提蒸汽；CC3常三线去汽提塔；S3常三线汽提蒸汽；CP4常四线产品；SS常底汽提蒸汽；CB常底油二、需要输入的主要参数1、装置进料数据2、单元操作参数3、设计规定及模拟技巧3．1原油蒸馏数据的重要性3．2常压炉出口汽化率的确认3．3分步模拟第一步：只考虑常压塔进出料，不考虑中段回流和汽提塔，汽提蒸汽考虑直接进至常压塔，如图2所示。

第二步：只考虑汽提塔，不考虑中段回流，如图3所示。

第三步：考虑汽提塔，中段回流考虑为侧线冷却器，如图3所示。

第四步：考虑汽提塔，考虑中段回流，如图1所示。

图2 常压系统模拟计算流程图图3 常压系统模拟计算流程图三、软件版本采用PRO / II 软件8.0版本四、主要计算结果根据以上输入条件和设计规定。

模拟输出结果见5至表9所示。

表5 T1塔模拟计算结果1 70.0 1.30 339.2 220.0 -5.69552 125.9 1.30 330.3 559.23 147.6 1.31 338.0 550.34 158.2 1.31 328.4 558.0 13.35 167.3 1.31 259.1 535.1 51.16 177.7 1.32 240.0 516.97 188.3 1.32 753.8 497.8 -1.80008 198.7 1.32 366.5 617.49 211.4 1.33 346.4 624.310 223.3 1.33 320.6 604.2 15.511 236.2 1.33 128.6 563.0 163.812 250.7 1.34 601.9 534.7 -4.100013 264.7 1.34 639.7 754.514 272.9 1.35 378.0 792.315 281.6 1.35 356.9 784.116 289.2 1.35 330.5 763.0 13.117 296.9 1.36 213.3 723.5 87.818 305.4 1.36 282.0 694.1 -1.100019 314.5 1.36 261.8 728.620 322.1 1.37 177.9 708.321 333.9 1.37 81.3 658.722 360.0 1.37 532.4 562.1 824.9 6.623 358.0 1.38 493.9 195.024 355.7 1.38 156.5 116.6 454.0表9 物料平衡结果五、模拟输入文件$ Generated by PRO/II Keyword Generation System <version 8.0.2> TITLEDIMENSION METRIC, STDTEMP=0, STDPRES=1.03323SEQUENCE SIMSCICALCULATION RVPBASIS=APIN, TVP=37.778COMPONENT DATALIBID 1,H2O/2,H2/3,N2/4,O2/5,CO2/6,H2S/7,CH4/8,C2H6/9,C2H4/ &10,C3H8/11,C3H6/12,NC4/13,IC4/14,BUT1/15,IBTE/16,C2BUTENE/ & 17,T2BUTENE/18,NC5/19,IC5/20,1PENTENE/21,CO, &BANK=PROCESS,SIMSCIASSAY CURVEFIT=VER6CUTPOINTS TBPCUTS=10,150,15/350,25/500,15/800,20 THERMODYNAMIC DATAMETHOD SYSTEM=BK10, SET=BK1001, DEFAULTSTREAM DATAPROPERTY STREAM=C1, TEMPERATURE=40, PRESSURE=11, PHASE=M, &RATE(WT)=6250, ASSAY=LVD86 STREAM=C1, DATA=0,133/10,146/50,160/90,178/100,204, TEMP=CSPGR STREAM=C1, AVERAGE=0.7922PROPERTY STREAM=LHO1, TEMPERATURE=40, PRESSURE=11, PHASE=M, &RATE(WT)=8332.99, ASSAY=LVD86 STREAM=LHO1, DATA=0,230/10,260/50,300/90,340/100,382, TEMP=C SPGR STREAM=LHO1, AVERAGE=0.8778PROPERTY STREAM=ZHO, TEMPERATURE=40, PRESSURE=11, PHASE=M, &RATE(WT)=149731, ASSAY=LVD86 STREAM=ZHO, DATA=11,500/13,520/17.88,540, TEMP=CSPGR STREAM=ZHO, AVERAGE=0.9798PROPERTY STREAM=LHO3, TEMPERATURE=40, PRESSURE=11, PHASE=M, &RATE(WT)=14167, ASSAY=LVD86 STREAM=LHO3, DATA=0,368/10,434/50,471/70,494/90,531/98,569, & TEMP=CSPGR STREAM=LHO3, AVERAGE=0.9264PROPERTY STREAM=C3, TEMPERATURE=40, PRESSURE=11, PHASE=M, &RATE(WT)=20667, ASSAY=LVD86 STREAM=C3, DATA=0,260/10,312/50,337/90,366/100,378, TEMP=CSPGR STREAM=C3, AVERAGE=0.866PROPERTY STREAM=LHO, TEMPERATURE=40, PRESSURE=11, PHASE=M, &RATE(WT)=1550, ASSAY=LVD86 STREAM=LHO, DATA=0,86/10,112/30,167/50,222/70,272/90,321/ & 100,354, TEMP=CSPGR STREAM=LHO, AVERAGE=0.8257PROPERTY STREAM=CT, TEMPERATURE=40, PRESSURE=11, PHASE=M, &RATE(WT)=5366.99, ASSAY=LVD86 STREAM=CT, DATA=0,46/10,74/50,106/90,137/100,161, TEMP=CSPGR STREAM=CT, AVERAGE=0.7273PROPERTY STREAM=LHO4, TEMPERATURE=40, PRESSURE=11, PHASE=M, &RATE(WT)=9749.99, ASSAY=LVD86 STREAM=LHO4, DATA=0,370/10,446/30,473/50,501/70,526/75,538, & TEMP=CSPGR STREAM=LHO4, AVERAGE=0.9372PROPERTY STREAM=LHO2, TEMPERATURE=40, PRESSURE=11, PHASE=M, &RATE(WT)=62500, ASSAY=LVD86 STREAM=LHO2, DATA=0,317/10,375/50,423/90,469/100,520, TEMP=C SPGR STREAM=LHO2, AVERAGE=0.9113PROPERTY STREAM=C4, TEMPERATURE=40, PRESSURE=11, PHASE=M, &RATE(WT)=3250, ASSAY=LVD1160 STREAM=C4, DATA=0,243/10,349/30,395/50,410/70,427/90,450/ & 100,488, TEMP=CSPGR STREAM=C4, AVERAGE=0.8927PROPERTY STREAM=CGAS, TEMPERATURE=40, PRESSURE=11, PHASE=M, &RATE(WT)=268, COMPOSITION(WT)=2,0.572/3,0.2576/5,0.0936/ &6,0.3398/7,32.8289/8,6.7814/9,0.6664/10,40.636/11,0.5042/ & 12,1.3942/13,0.5402/14,0.2695/17,0.254/18,0.0286/20,1.7658/ & 21,1.0678, NORMALIZEPROPERTY STREAM=C2, TEMPERATURE=40, PRESSURE=11, PHASE=M, &RATE(WT)=30667, ASSAY=LVD86 STREAM=C2, DATA=0,198/10,222/50,254/90,291/100,309, TEMP=CSPGR STREAM=C2, AVERAGE=0.8431PROPERTY STREAM=S2, TEMPERATURE=440, PRESSURE=10, PHASE=M, &RATE(WT)=100, COMPOSITION(M)=1,100PROPERTY STREAM=SS, TEMPERATURE=440, PRESSURE=10, PHASE=M, &RATE(WT)=2100, COMPOSITION(M)=1,100PROPERTY STREAM=S1, TEMPERATURE=440, PRESSURE=10, PHASE=M, &RATE(WT)=100, COMPOSITION(M)=1,100PROPERTY STREAM=S3, TEMPERATURE=440, PRESSURE=10, PHASE=M, &RATE(WT)=100, COMPOSITION(M)=1,100UNIT OPERATIONSMIXER UID=M1FEED C1,LHO1,ZHO,LHO3,C3,LHO,CT,LHO4,LHO2,C4,CGAS,C2PRODUCT M=1HX UID=E1COLD FEED=1, M=2, DP=9.6OPER CTEMP=364COLUMN UID=T1PARAMETER TRAY=24,IO=80 DAMPING=0.8FEED 2,22/SS,24/C11,4/C22,10/C33,16PRODUCT OVHD(WT)=GN,5749.99, WATER(WT)=W,1,2600, &LDRAW(WT)=CC2,11,30667, LDRAW(WT)=CC3,17,20667, & BTMS(M)=CB, LDRAW(WT)=CP4,22,3250, LDRAW(WT)=CC1,5, & 6250, SUPERSEDE=ONCONDENSER TYPE=TFIX, TEMPERATURE=70, TEST=70DUTY 1,1,-5,CONDENSERDUTY 2,7,-1.8,PAROHC1DUTY 3,12,-4.1,PAROHC2DUTY 4,18,-1.1,PAROHC3PA NAME=PA1, FROM=8, TO=7, PHASE=L, DNAME=PAROHC1, &RATE(WT)=65000.2PA NAME=PA2, FROM=14, TO=12, PHASE=L, DNAME=PAROHC2, &RATE(WT)=56999.9PA NAME=PA3, FROM=20, TO=18, PHASE=L, DNAME=PAROHC3, &RATE(WT)=10000PRINT PROPTABLE=PARTESTIMATE MODEL=REFINING, RRATIO=2, CTEMP=70, TTEMP=100, & BTEMP=353TEMPERATURE 1,70/2,100/24,353PRESSURE 1,1.3/24,1.38SPEC ID=COL1SPEC1, STREAM=GN, D86(EP,C), VALUE=180SPEC ID=COL1SPEC3, STREAM=CP1, RATE(WT,KG/H),TOTAL,WET, & VALUE=6250SPEC ID=COL1SPEC4, STREAM=CP2, RATE(WT,KG/H),TOTAL,WET, & VALUE=30667SPEC ID=COL1SPEC5, STREAM=CP3, RATE(WT,KG/H),TOTAL,WET, & VALUE=20667VARY DNAME=CONDENSERVARY DRAW=CC2,CC3SIDESTRIPPER UID=SS1PARAMETER TRAY=2,IOFEED CC1,1/S1,2PRODUCT OVHD(M)=C11, BTMS(WT)=CP1,6250, SUPERSEDE=ONPSPEC PTOP=1.31, DPCOLUMN=0.05PRINT PROPTABLE=PARTESTIMATE MODEL=SIMPLEVARY FEED=CC1SIDESTRIPPER UID=SS2PARAMETER TRAY=2,IOFEED CC2,1/S2,2PRODUCT OVHD(M)=C22, BTMS(WT)=CP2,30667PSPEC PTOP=1.4, DPCOLUMN=0.05PRINT PROPTABLE=PARTSIDESTRIPPER UID=SS3PARAMETER TRAY=2,IOFEED CC3,1/S3,2PRODUCT OVHD(M)=C33, BTMS(WT)=CP3,20667PSPEC PTOP=1.6, DPCOLUMN=0.05PRINT PROPTABLE=PARTEND。