各位高手帮帮忙，环己酮-水双塔共沸精馏问题
运行后出现结果，应该怎样调整？谢谢各位了，论文要用 本人新手不知该怎样分析~->Calculations begin ...
> Beginning Convergence Loop $OLVER01 Method: BROYDEN
Block: T1 Model: RADFRAC
*** SEVERE ERROR
A LIQUID FEED/PUMPAROUND TO THE TOP STAGE IS REQUIRED WHEN
"Q1=0" IS SPECIFIED IN "COL-SPECS"; REQUIRED FEED/PUMPAROUND
HAS ZERO FLOW.
* WARNING
REST OF BLOCK BYPASSED DUE TO SEVERE ERROR.
Block: DECANTER Model: DECANTER
Block: T2 Model: RADFRAC
Convergence iterations:
Iter Err/Tol
0 69333.
0 0.12917E+07
1 24487.
2 20558.
3 18740.
4 15616.
5 8663.4
6 885.96
7 2.0298
8 0.12279E-04
> Loop $OLVER01 Method: BROYDEN Iteration 1
6 vars not converged, Max Err/Tol 0.10000E+07
Block: T1 Model: RADFRAC
Convergence iterations:
Iter Err/Tol
0 0.57513E+06
0 0.97407E+06
1 0.67093E+06
2 0.55537E+06
3 0.53657E+06
4 0.60351E+06
5 0.51975E+06
6 0.44726E+06
7 0.36471E+06
8 0.27203E+06
9 0.16822E+06
10 52333.
11 1209.2
12 0.58982
Block: DECANTER Model: DECANTER
* WARNING
VAPOR PRESENT IN FEED TO BLOCK; VFRAC = 1.0000
Block: T2 Model: RADFRAC
Convergence iterations:
Iter Err/Tol
0 0.34494
0 0.22187E-01
1 0.21072E-07
> Loop $OLVER01 Method: BROYDEN Iteration 2
6 vars not converged, Max Err/Tol 0.58402E+05
Block: T1 Model: RADFRAC
Convergence iterations:
Iter Err/Tol
0 29621.
0 29621.
1 1498.3
2 1.0927
3 0.35221E-05
Block: DECANTER Model: DECANTER
* WARNING
VAPOR PRESENT IN FEED TO BLOCK; VFRAC = 1.0000
Block: T2 Model: RADFRAC
Convergence iterations:
Iter Err/Tol
0 0.12269
0 0.12269
1 0.92959E-07
> Loop $OLVER01 Method: BROYDEN Iteration 3
6 vars not converged, Max Err/Tol 0.36547E+04
Block: T1 Model: RADFRAC
Convergence iterations:
Iter Err/Tol
0 427.61
0 427.61
1 5.4588
2 0.72838E-04
Block: DECANTER Model: DECANTER
* WARNING
VAPOR PRESENT IN FEED TO BLOCK; VFRAC = 1.0000
Block: T2 Model: RADFRAC
Convergence iterations:
Iter Err/Tol
0 0.22775
0 0.22775
1 0.24068E-06
> Loop $OLVER01 Method: BROYDEN Iteration 4
6 vars not converged, Max Err/Tol 0.14324E+04
Block: T1 Model: RADFRAC
Convergence iterations:
Iter Err/Tol
0 594.98
0 594.98
1 10.238
2 0.20992E-03
Block: DECANTER Model: DECANTER
* WARNING
VAPOR PRESENT IN FEED TO BLOCK; VFRAC = 1.0000
Block: T2 Model: RADFRAC
Convergence iterations:
Iter Err/Tol
0 0.88279E-01
0 0.88279E-01
1 0.61979E-07
> Loop $OLVER01 Method: BROYDEN Iteration 5
6 vars not converged, Max Err/Tol 0.40624E+03
Block: T1 Model: RADFRAC
Convergence iterations:
Iter Err/Tol
0 300.96
0 300.96
1 1.8408
2 0.61786E-05
Block: DECANTER Model: DECANTER
* WARNING
VAPOR PRESENT IN FEED TO BLOCK; VFRAC = 1.0000
Block: T2 Model: RADFRAC
Convergence iterations:
Iter Err/Tol
0 0.27340
0 0.17419E-01
1 0.20407E-07
> Loop $OLVER01 Method: BROYDEN Iteration 6
6 vars not converged, Max Err/Tol 0.47494E+02
Block: T1 Model: RADFRAC
Convergence iterations:
Iter Err/Tol
0 43.995
0 43.995
1 0.34400E-01
Block: DECANTER Model: DECANTER
* WARNING
VAPOR PRESENT IN FEED TO BLOCK; VFRAC = 1.0000
Block: T2 Model: RADFRAC
Convergence iterations:
Iter Err/Tol
0 0.81807
0 0.53337E-01
1 0.41283E-07
> Loop $OLVER01 Method: BROYDEN Iteration 7
# Converged Max Err/Tol 0.78493E+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 1
Errors 0 0 0
Warnings 0 0 7
分层器温度太高，或者压力太低，回流量有问题！ 另外，必须有一个液体物料从塔顶进入，否则没法模拟 你塔顶因为没有冷凝器，所以必须有一股液体从塔顶进料，这是Aspen规定的 塔顶蒸出的气体，必须经过换热器冷却为液体以后才能进入分层器，不知道你换热了没？ 这个waring可以忽略掉，或者，气相经冷凝后混合进入分相器。 tdl522 发表于 2014-3-25 14:23
这个waring可以忽略掉，或者，气相经冷凝后混合进入分相器。
你好，谢谢帮助！您说的气相经冷凝后混合进入分相器，是指物流1和4先用一个混合器混合后在进入分相器；还是在T1设定上塔顶全凝器？谢谢了，我不是太明白{:1106_400:} 406613254 发表于 2014-3-25 14:12
塔顶蒸出的气体，必须经过换热器冷却为液体以后才能进入分层器，不知道你换热了没？
你好，谢谢你的帮助！是不是应该在分相器之前加上换热器，将物流1和4冷却然后在进入分相器？进入分相器还需要加上混合器吗？谢谢了
需要将塔设定成塔顶全凝的吗？
物流2和3都是从塔顶进料的
谢谢了{:1106_389:}
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