Aspen模拟
在氯乙烯清制工段低沸塔经塔顶，塔釜回流率与纯度进一步调整后出现以下问题，求告知怎么改正SEVERE ERROR
COLUMN NOT IN MASS BALANCE.
CHECK FEEDS, PRODUCTS, COL-SPECS, AND VARY SKWS.
***SEVERE ERROR
CMBAL CALCULATIONS FAILURE: RERUN WITH CHANGES SUGGESTED
IF THERE ARE ANY.
***SEVERE ERROR
MATERIAL AND ENERGY BALANCES FAILED TO CONVERGE: CHECK COL-SPECS
OR SUPPLY BETTER TEMPERATURE AND COMPOSITION ESTIMATES.
** ERROR
FINAL VALUE OF ONE OR MORE MANIPULATED VARIABLE LIES OUTSIDE
USER-SPECIFIED BOUNDS.BOUNDS FOR MANIPULATED VARIABLES ARE
NOT USED FOR DSMETH=SIMULT.
*WARNING
REST OF BLOCK BYPASSED DUE TO SEVERE ERROR.
col specor 那边可能有点问题
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