Aspen dynamic吸收塔转换动态模型时提醒压强出错
本帖最后由 shandonghaichua 于 2015-3-12 02:10 编辑 <br /><br />稳态没有错误和警告***No Errors or Warnings were issued during Simulation ***Export选的Flow Driven Dyn总提示压强问题如下：
TRANSLATING BLOCK B1 of TYPE RADFRAC:
The specified pressure drops in the column are smaller than the liquid head on the stages listed below. Please adjust the pressure profile on the Pressure sheet of the Setup form. A typical total pressure drop across a stage is twice the pressure drop due to liquid head. Alternatively, modify the weir heights or column diameter on these stages. If you are modelling a packed column, select the Simple Packing option on the Hydraulics sheet of the Dynamics form. If you are using tray-rating or packing-rating, ensure your input parameters are consistent.
P_dropL = Pressure drop due to liquid head on stage (Bar).
P_drop= Total pressure drop on stage (Bar).
Stage P_dropL (Bar) P_drop (Bar)
1 0.000000000000e+000 0.000000000000e+000
2 4.731748380765e-003 4.445000000008e-005
3 4.731785726897e-003 4.432999999993e-005
4 4.732392970614e-003 4.406999999995e-005
5 4.733485609176e-003 4.362999999996e-005
6 4.735444484784e-003 4.282000000000e-005
7 4.739199814903e-003 4.117000000003e-005
The pressure drop across all stages should be greater than 0.1 Pa/1.45E-5 psi. The pressure drops across the following stages are not:
1
Please adjust the pressure profile on the Pressure sheet of the Setup form.
FATAL ERROR: Please correct the errors above before continuing
Aborting procedure D:Program FilesAspenTechAspen Plus Dynamics V7.3AstRADFRAC.TBL
TRANSLATING FEED STREAM 1 of TYPE MATERIAL.
WARNING: Dynamic simulation specifications use input data, not results, for this feed stream.
TRANSLATING FEED STREAM 2 of TYPE MATERIAL.
WARNING: Valid-Phases specified as Vapor-Liquid but results are vapor only.This may cause a convergence failure in Aspen Dynamics. Please change Valid-Phases to Vapor-Only and re-run the simulation.
TRANSLATING Reaction ID GLOBAL of Type CHEMISTRY:
FATAL ERROR: Chemistry name GLOBAL cannot be used in dynamics because it conflicts with the global keyword. Please rename it.
Aborting procedure D:Program FilesAspenTechAspen Plus Dynamics V7.3AstCHEMISTRY.TBL
求高手指点
本帖最后由 shandonghaichua 于 2015-3-12 02:10 编辑 <br /><br />哪位高手帮忙指点下啊，小弟外行，对塔器不甚了解，还望指点，小弟不胜感激。
我也是，和你一样的，怎么改都不对，你现在知道怎么回事了么 雪雪雪 发表于 2017-5-1 15:26
我也是，和你一样的，怎么改都不对，你现在知道怎么回事了么
适当增加全塔压降 大橙子丶 发表于 2017-6-1 15:17 static/image/common/back.gif
适当增加全塔压降
嗯嗯，谢谢
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