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- 2021-3-5
- 积分
- 44
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分馏塔模拟后不收敛
proii模拟后的message是这样的
** WARNING ** The liquid enthalpy of H2O at temperature 805.15 K is outside
the acceptable range of 273.16 K through 533.15 K.
** WARNING ** The liquid enthalpy of BUTANE at temperature 805.15 K is
outside the acceptable range of 134.86 K through 420 K.
** WARNING ** The liquid enthalpy of HEXANE at temperature 805.15 K is
outside the acceptable range of 177.83 K through 460 K.
** WARNING ** Cp calculated for stream 244 is less than zero. Results can be
erroneous. Use some other suitable enthalpy corelation.
FEED FLASH COMPLETE
UNIT 11 BEGINS - 'E1 '
** WARNING ** The LMTD correction factor (FT) has been set to 0.0001.
UNIT 11 SOLVED
UNIT 9 BEGINS - 'T1 '
** WARNING ** UNIT 9, 'T1' - Stream 401 - The given FIXED STREAM RATE
(80.207) and the PRODUCT RATE ESTIMATE (1283.5) were DIFFERENT,
so the rate estimate has been changed to 80.207.
** WARNING ** UNIT 9, 'T1' - Stream 301 - The given FIXED STREAM RATE
(.38069) and the PRODUCT RATE ESTIMATE (2955.8) were DIFFERENT,
so the rate estimate has been changed to .38069.
** WARNING ** UNIT 9, 'T1' - Stream 241 - The given FIXED STREAM RATE
(.12683) and the PRODUCT RATE ESTIMATE (7623.3) were DIFFERENT,
so the rate estimate has been changed to .12683.
** WARNING ** UNIT 9, 'T1' - Stream 202A - The given FIXED STREAM RATE
(1.1135E-21) and the PRODUCT RATE ESTIMATE (3377.2) were
DIFFERENT, so the rate estimate has been changed to 1.1135E-21.
** WARNING ** UNIT 9, 'T1' - COLUMN calculations are DIVERGING. Check input
data for consistency.
*** A FATAL ERROR OCCURRED ON ITERATION 1
*** ERROR HISTORY IS NOT AVAILABLE FOR THIS ITERATION
UNIT 9 NOT SOLVED
*** PROBLEM SOLUTION NOT REACHED
***
*** GLOBAL DEVIATION 13.77 MOLE PERCENT
*** MAXIMUM DEVIATION ON COMPONENT PENTANE OF 24.77 MOLE PERCENT
***
** WARNING ** Unit 'T1' DID NOT SOLVE
*** Run completed - Case not solved
*** THIS RUN USED 49.36 PRO/II SIMULATION UNITS
*** RUN STATISTICS
STARTED 09:59:19 04/28/21 NO ERRORS
FINISHED 09:59:23 04/28/21 29 WARNINGS
RUN TIMES NO MESSAGES
INTERACTIVE 0 MIN, 0.00 SEC
CALCULATIONS 0 MIN, 3.95 SEC
TOTAL 0 MIN, 3.95 SEC
** WARNING ** PROBLEM SOLUTION NOT REACHED. ** Note- Default Tolerances in
unit specifications, recycle loops and columns are tightened
starting with PRO/II 9.4. If the file is happened to converge
in previous version, probable reason for non-convergence could
be tightened tolerance in current version.
*** CHECKING
UNIT DATA
EXECUTION SEQUENCE
FEED FLASH CONDITIONS
R
PRO/II Version 9.4 - Calculation module
========================================
*** READING PRO/II DATABASE
PROJECT USER
PROBLEM DATE 04/06/21
*** PROBLEM SOLUTION BEGINS
FEED FLASH BEGINS
** WARNING ** The liquid enthalpy of N2 at temperature 366.15 K is outside
the acceptable range of 63.15 K through 112 K.
** WARNING ** The liquid enthalpy of CO at temperature 366.15 K is outside
the acceptable range of 68.15 K through 132 K.
** WARNING ** The liquid enthalpy of CO2 at temperature 366.15 K is outside
the acceptable range of 220 K through 290 K.
** WARNING ** The liquid enthalpy of H2 at temperature 366.15 K is outside
the acceptable range of 13.95 K through 32 K.
** WARNING ** The liquid enthalpy of METHANE at temperature 366.15 K is
outside the acceptable range of 90.69 K through 190 K.
** WARNING ** The liquid enthalpy of ETHYLENE at temperature 366.15 K is
outside the acceptable range of 103.97 K through 252.7 K.
** WARNING ** The liquid enthalpy of ETHANE at temperature 366.15 K is
outside the acceptable range of 92 K through 290 K.
** WARNING ** The liquid enthalpy of PROPENE at temperature 366.15 K is
outside the acceptable range of 87.89 K through 298.15 K.
** WARNING ** The liquid enthalpy of PROPANE at temperature 366.15 K is
outside the acceptable range of 85.47 K through 360 K.
** WARNING ** The liquid enthalpy of IBUTENE at temperature 366.15 K is
outside the acceptable range of 132.81 K through 343.15 K.
** WARNING ** The liquid enthalpy of 1BUTENE at temperature 366.15 K is
outside the acceptable range of 87.8 K through 300 K.
** WARNING ** The liquid enthalpy of T2BUTENE at temperature 366.15 K is
outside the acceptable range of 167.62 K through 274.03 K.
** WARNING ** The liquid enthalpy of C2BUTENE at temperature 366.15 K is
outside the acceptable range of 134.26 K through 350 K.
** WARNING ** The liquid enthalpy of 1PENTENE at temperature 366.15 K is
outside the acceptable range of 107.93 K through 310 K.
** WARNING ** The liquid enthalpy of IPENTANE at temperature 366.15 K is
outside the acceptable range of 113.25 K through 310 K.
** WARNING ** The liquid enthalpy of H2S at temperature 416.15 K is outside
the acceptable range of 187.68 K through 370 K.
** WARNING ** The liquid enthalpy of IBUTANE at temperature 416.15 K is
outside the acceptable range of 113.54 K through 380 K.
** WARNING ** The liquid enthalpy of PENTANE at temperature 416.15 K is
outside the acceptable range of 143.42 K through 390 K.
** WARNING ** The liquid enthalpy of H2O at temperature 805.15 K is outside
the acceptable range of 273.16 K through 533.15 K.
** WARNING ** The liquid enthalpy of BUTANE at temperature 805.15 K is
outside the acceptable range of 134.86 K through 420 K.
** WARNING ** The liquid enthalpy of HEXANE at temperature 805.15 K is
outside the acceptable range of 177.83 K through 460 K.
** WARNING ** Cp calculated for stream 244 is less than zero. Results can be
erroneous. Use some other suitable enthalpy corelation.
FEED FLASH COMPLETE
UNIT 11 BEGINS - 'E1 '
** WARNING ** The LMTD correction factor (FT) has been set to 0.0001.
UNIT 11 SOLVED
UNIT 9 BEGINS - 'T1 '
INNER 0 : E(ENTH+SPEC) = 1.61376E-01
CALCULATING NEW MATRIX
INNER 1 : E(ENTH+SPEC) = 1.61365E-01 ALPHA = 9.89537E-05
INNER 2 : E(ENTH+SPEC) = 1.61346E-01 ALPHA = 7.78588E-04
INNER 3 : E(ENTH+SPEC) = 1.61350E-01 ALPHA = 4.50298E-05
INNER 4 : E(ENTH+SPEC) = 1.61354E-01 ALPHA = 7.56096E-06
ITER 1 E(K) = 1.806E+00 E(ENTH+SPEC) = 1.614E-01 E(SUM) = 2.531E+01
DAMP = 1.000E+00
INNER 0 : E(ENTH+SPEC) = 1.62677E-01
INNER 1 : E(ENTH+SPEC) = 1.62678E-01 ALPHA = 4.82446E-06
INNER 2 : E(ENTH+SPEC) = 1.62682E-01 ALPHA = 8.20466E-06
INNER 3 : E(ENTH+SPEC) = 1.62684E-01 ALPHA = 4.37230E-06
INNER 4 : E(ENTH+SPEC) = 1.62685E-01 ALPHA = 2.03671E-06
CALCULATING NEW MATRIX
INNER 1 : E(ENTH+SPEC) = 1.62685E-01 ALPHA = 2.81318E-13
INNER 2 : E(ENTH+SPEC) = 1.62685E-01 ALPHA = 3.44795E-13
INNER 3 : E(ENTH+SPEC) = 1.62685E-01 ALPHA = 3.21155E-13
INNER 4 : E(ENTH+SPEC) = 1.62685E-01 ALPHA = 2.52753E-14
CALCULATING NEW MATRIX
INNER 1 : E(ENTH+SPEC) = 1.62685E-01 ALPHA = 7.67658E-13
INNER 2 : E(ENTH+SPEC) = 1.62685E-01 ALPHA = 3.23288E-13
INNER 3 : E(ENTH+SPEC) = 1.62685E-01 ALPHA = 3.17754E-13
INNER 4 : E(ENTH+SPEC) = 1.62685E-01 ALPHA = 2.67711E-14
CALCULATING NEW MATRIX
INNER 1 : E(ENTH+SPEC) = 1.62685E-01 ALPHA = 6.55025E-13
INNER 2 : E(ENTH+SPEC) = 1.62685E-01 ALPHA = 6.21049E-15
INNER 3 : E(ENTH+SPEC) = 1.62685E-01 ALPHA = 1.41148E-15
INNER 4 : E(ENTH+SPEC) = 1.62685E-01 ALPHA = 6.70924E-16
CALCULATING NEW MATRIX
** WARNING ** UNIT 9, 'T1' - COLUMN calculations are DIVERGING. Check input
data for consistency.
*** A FATAL ERROR OCCURRED ON ITERATION 2
*** ERROR HISTORY IS NOT AVAILABLE FOR THIS ITERATION
UNIT 9 NOT SOLVED
*** PROBLEM SOLUTION NOT REACHED
***
*** GLOBAL DEVIATION 13.79 MOLE PERCENT
*** MAXIMUM DEVIATION ON COMPONENT PENTANE OF 24.70 MOLE PERCENT
***
** WARNING ** Unit 'T1' DID NOT SOLVE
*** Run completed - Case not solved
*** THIS RUN USED 49.36 PRO/II SIMULATION UNITS
*** RUN STATISTICS
STARTED 10:03:06 04/28/21 NO ERRORS
FINISHED 10:03:10 04/28/21 25 WARNINGS
RUN TIMES NO MESSAGES
INTERACTIVE 0 MIN, 0.00 SEC
CALCULATIONS 0 MIN, 4.56 SEC
TOTAL 0 MIN, 4.56 SEC
** WARNING ** PROBLEM SOLUTION NOT REACHED. ** Note- Default Tolerances in
unit specifications, recycle loops and columns are tightened
starting with PRO/II 9.4. If the file is happened to converge
in previous version, probable reason for non-convergence could
be tightened tolerance in current version.
希望大家能够帮忙看看 |
|
发表于 2021-4-28 10:13:37
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