一生一代一双人 发表于 2015-5-21 16:07:38

Aspen Plus循环问题

模拟循环时，有错误和警告，目前改了，但还是有错，请帮我再看看，教教我怎么改。。。灰常感激啊。。。

   
<< Run reinitialized 15:52:48 Thu May 21, 2015>>



->Processing input specifications ...


   Disable STREAM O2 due to disabled source AND destination
   Disable STREAM NO due to disabled source AND destination
   Disable STREAM PRODUCT5 due to disabled source AND destination
   Disable STREAM PRODUCT6 due to disabled source AND destination
   Disable STREAM CH3OH2 due to disabled source AND destination
   Disable STREAM PRODUCT7 due to disabled source AND destination
   Disable STREAM V2 due to disabled source AND destination
   Disable STREAM L2 due to disabled source AND destination

Flowsheet Analysis :

Block $OLVER01 (Method: SECANT) has been defined to converge
          specs : DS-1

COMPUTATION ORDER FOR THE FLOWSHEET:
MIXER H1 R1 H2
$OLVER01 D1
(RETURN $OLVER01)

->Calculations begin ...


   Block: MIXER    Model: MIXER

   Block: H1       Model: HEATER

   Block: R1       Model: RSTOIC

   Block: H2       Model: HEATER

   Block: D1       Model: DISTL
*** SEVERE ERROR
      VAPOR FLOWRATE BELOW THE FEED STAGE IS ZERO.
      FEED QUALITY IS 0.10000E+36 REFLUX RATIO IS 1.2000
      EITHER FEED QUALITY IS TOO HIGH OR REFLUX RATIO IS TOO LOW.


> Beginning Convergence Loop $OLVER01 Method: SECANT
   1 vars not converged, Max Err/Tol-0.60899E+02

   Block: D1       Model: DISTL
*** SEVERE ERROR
      VAPOR FLOWRATE BELOW THE FEED STAGE IS ZERO.
      FEED QUALITY IS 0.10000E+36 REFLUX RATIO IS 1.2000
      EITHER FEED QUALITY IS TOO HIGH OR REFLUX RATIO IS TOO LOW.


> Loop $OLVER01 Method: SECANT       Iteration    2
*   WARNING
      SPEC FUNCTION NOT CHANGING, POSSIBLY HAS A FLATRESPONSE
      TO THE MANIPULATED PARAMETER WITHIN THE GIVEN BOUNDS.

   1 vars not converged, Max Err/Tol-0.60899E+02
**ERROR
      Convergence block $OLVER01 did not converge
      normally in the final pass


->Generating block results ...

    Block: H1       Model: HEATER

    Block: H2       Model: HEATER

->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               1
         Warnings      0               0               1

->Generating results ...


缘如此 发表于 2015-5-21 16:07:38

作为刚学习Aspen的新手，我是来友情顶贴的！

zzb7410 发表于 2015-5-21 16:07:38

就这点东西谁都帮不了啊，只能告诉你调整各种参数了

guojuanlu 发表于 2015-5-21 16:07:38

要上传文档文件才能搞啊

yingxiongmolu 发表于 2015-5-21 16:07:38

FEED QUALITY IS 0.10000E+36 REFLUX RATIO IS 1.2000
      EITHER FEED QUALITY IS TOO HIGH OR REFLUX RATIO IS TOO LOW.
A FLATRESPONSE
      TO THE MANIPULATED PARAMETER WITHIN THE GIVEN BOUNDS.
初值不合适而导致 操纵变量无变化！调节进料，下调试试！

2331419016 发表于 2015-5-21 16:07:38

下次发贴求助要附上相关说明和文件

qianseason 发表于 2015-5-21 16:07:38

注意初值的选取 深有感触
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