丙烯制环氧丙烷,精馏模拟出错,帮看看吧
物性是NRTL,不知是不是这个错了?<< All Blocks Reinitialized >>
<< Run reinitialized 17:47:43 Thu Jun 20, 2013>>
->Processing input specifications ...
Flowsheet Analysis :
Block $OLVER01 (Method: WEGSTEIN) has been defined to converge
streams: J1-OUT
COMPUTATION ORDER FOR THE FLOWSHEET:
$OLVER01 J2 J3 JINGLIU1
(RETURN $OLVER01)
->Calculations begin ...
> Beginning Convergence Loop $OLVER01 Method: WEGSTEIN
Block: J2 Model: RADFRAC
* WARNING
ZERO FEED - BLOCK BYPASSED.
Block: J3 Model: RADFRAC
* WARNING
ZERO FEED - BLOCK BYPASSED.
Block: JINGLIU1 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 3 64.380
2 1 3 5.2299
3 1 3 0.33936
> Loop $OLVER01 Method: WEGSTEIN Iteration 1
4 vars not converged, Max Err/Tol 0.10000E+07
Block: J2 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 5 114.82
2 1 4 15.386
3 1 3 2.4485
4 1 3 0.31620
Block: J3 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 3 96.675
2 1 3 4.8270
3 1 2 0.30643
Block: JINGLIU1 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 5 42.019
2 1 3 2.2819
3 1 3 0.57737
> Loop $OLVER01 Method: WEGSTEIN Iteration 2
*** SEVERE ERROR
FAILURE TO SOLVE 2-PHASE ADIABATIC PROBLEM AS TP SUBPROBLEMS. T= 10.0000
P= 1.0234D+05 HCALC= -1.7218D+08 HFSPEC= -1.9196D+08 ERRORS OCCURRED IN
FLASH CALCULATIONS FOR TEAR STREAMJ1-OUT .
5 vars not converged, Max Err/Tol 0.93665E+04
Block: J2 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 5 277.64
2 1 2 3.8216
3 1 3 0.21439
*** SEVERE ERROR
SINGLE PHASE TEMPERATURE CALCULATIONS FAILED IN4ITERATIONS. FINAL
TEMPERATURE IS10.0000FINAL ENTHALPY IS-1.7010D+08SPECIFIED
ENTHALPY IS-1.8510D+08
Block: J3 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 3 864.49
2 1 2 25.518
3 1 2 2.1832
4 1 2 0.92220E-02
Block: JINGLIU1 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 4 5.6121
2 1 2 0.27491
> Loop $OLVER01 Method: WEGSTEIN Iteration 3
5 vars not converged, Max Err/Tol-0.69553E+04
Block: J2 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 9 222.86
2 1 3 26.558
3 1 3 3.1626
4 1 3 0.37001
Block: J3 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 4 171.62
2 1 2 28.071
3 1 2 15.234
4 1 2 0.32480
Block: JINGLIU1 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 2 0.19210E-01
> Loop $OLVER01 Method: WEGSTEIN Iteration 4
5 vars not converged, Max Err/Tol 0.33460E+03
Block: J2 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 6 13.562
2 1 3 0.53141
Block: J3 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 3 11.984
2 1 2 1.6766
3 1 2 0.82173
Block: JINGLIU1 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 1 0.17064E-02
> Loop $OLVER01 Method: WEGSTEIN Iteration 5
# Converged Max Err/Tol-0.75012E+00
->Simulation calculations completed ...
***No Warnings were issued during Input Translation ***
***Summary of Simulation Errors***
Physical
Property System Simulation
Terminal Errors 0 0 0
Severe Errors 0 0 2
Errors 0 0 0
Warnings 0 0 2
这个是bpk文件,是aspen v7.2 的 @micro @Horse 能帮忙看看嘛 已经收敛了,其实可以不管的。不过可以排除掉,把J2-OUT作为撕裂流:
->Simulation calculations completed ...
***No Warnings were issued during Input Translation ***
***Summary of Simulation Errors***
Physical
Property System Simulation
Terminal Errors 0 0 0
Severe Errors 0 0 0
Errors 0 0 0
Warnings 0 0 0
tdl522 发表于 2013-6-20 18:03
已经收敛了,其实可以不管的。不过可以排除掉,把J2-OUT作为撕裂流:
太感谢了 我今天弄了一下午了都不知道问题在哪里,再次感谢 tdl522 发表于 2013-6-20 18:03
已经收敛了,其实可以不管的。不过可以排除掉,把J2-OUT作为撕裂流:
那个计算的顺序可以自己设定嘛?现在的顺序是先计算精馏塔3在计算 塔1 塔2
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