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本帖最后由 Alexii 于 2019-6-20 09:06 编辑
本人新手,今天在用ASPEN PLUS V8.4 做丙酮、水二元体系精馏RADFRAC模拟时总是出错,信息如下:
->Calculations begin ...
Block: B1 Model: RADFRAC
Convergence iterations:
OL ML IL Err/Tol
1 1 10 64.015
2 1 10 111.32
3 1 10 34.424
4 1 10 40.624
5 1 10 88.513
6 1 10 95.318
7 1 5 18.353
8 1 6 29.491
9 1 5 17.738
10 1 5 18.322
11 1 7 28.433
12 1 5 18.218
13 1 10 38.147
14 1 5 18.302
15 1 8 32.844
16 1 10 20.549
17 1 5 14.546
18 1 5 14.738
19 1 5 15.466
20 1 5 16.354
21 1 8 41.246
22 1 5 16.996
23 1 10 26.634
24 1 5 16.031
25 1 8 41.908
** ERROR
RADFRAC NOT CONVERGED IN 25 OUTSIDE LOOP ITERATIONS.
*** SEVERE ERROR
MATERIAL AND ENERGY BALANCES FAILED TO CONVERGE: CHECK COL-SPECS
OR SUPPLY BETTER TEMPERATURE AND COMPOSITION ESTIMATES.
** ERROR
BLOCK B1 IS NOT IN MASS BALANCE:
MASS INLET FLOW = 0.27777778E+00, MASS OUTLET FLOW = 0.25546727E+00
RELATIVE DIFFERENCE = 0.87332145E-01
->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 2
Warnings 0 0 0
网上找了一下解决措施,调整操作压力,进汽量等,都没有解决,望大家指点一下,谢谢!
--解决途径:更改物性方法、尝试共沸。
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