ASPEN模拟精馏塔警告如何消除？

现在模拟的粗二甲醚精馏，物料为二甲醚、甲醇和水，共两台塔，两台精馏塔警告分别如下，不知道这两个区别如何消除。
第一台塔警告：
The following messages were issued during Report Generation:

*  WARNING
   NO LIGHT-KEY COMPONENT FOR COLUMN TARGETING ANALYSIS ON THE
   FOLLOWING STAGES:
    1    2   10
   EXTRAPOLATIONS ARE USED TO COMPLETE THE SPECIFICATIONS.

*  WARNING
   NO HEAVY-KEY COMPONENT FOR COLUMN TARGETING ANALYSIS ON THE
   FOLLOWING STAGES:
    1   10
   EXTRAPOLATIONS ARE USED TO COMPLETE THE SPECIFICATIONS.

第二台塔警告：
The following messages were issued during Report Generation:

*  WARNING
   NO LIGHT-KEY COMPONENT FOR COLUMN TARGETING ANALYSIS ON THE
   FOLLOWING STAGES:
   10
   EXTRAPOLATIONS ARE USED TO COMPLETE THE SPECIFICATIONS.

*  WARNING
   NO HEAVY-KEY COMPONENT FOR COLUMN TARGETING ANALYSIS ON THE
   FOLLOWING STAGES:
   10
   EXTRAPOLATIONS ARE USED TO COMPLETE THE SPECIFICATIONS.

*  WARNING
   NO LIGHT-KEY COMPONENT FOR COLUMN TARGETING ANALYSIS ON THE
   FOLLOWING STAGES:
   10
   EXTRAPOLATIONS ARE USED TO COMPLETE THE SPECIFICATIONS.

*  WARNING
   NO HEAVY-KEY COMPONENT FOR COLUMN TARGETING ANALYSIS ON THE
   FOLLOWING STAGES:
   10
   EXTRAPOLATIONS ARE USED TO COMPLETE THE SPECIFICATIONS.

*  WARNING
   NO LIGHT-KEY COMPONENT FOR COLUMN TARGETING ANALYSIS ON THE
   FOLLOWING STAGES:
   10
   EXTRAPOLATIONS ARE USED TO COMPLETE THE SPECIFICATIONS.

*  WARNING
   NO HEAVY-KEY COMPONENT FOR COLUMN TARGETING ANALYSIS ON THE
   FOLLOWING STAGES:
   10
   EXTRAPOLATIONS ARE USED TO COMPLETE THE SPECIFICATIONS.

*  WARNING
   NO LIGHT-KEY COMPONENT FOR COLUMN TARGETING ANALYSIS ON THE
   FOLLOWING STAGES:
    1    2   10
   EXTRAPOLATIONS ARE USED TO COMPLETE THE SPECIFICATIONS.

*  WARNING
   NO HEAVY-KEY COMPONENT FOR COLUMN TARGETING ANALYSIS ON THE
   FOLLOWING STAGES:
    1   10
   EXTRAPOLATIONS ARE USED TO COMPLETE THE SPECIFICATIONS.

*  WARNING
   NO LIGHT-KEY COMPONENT FOR COLUMN TARGETING ANALYSIS ON THE
   FOLLOWING STAGES:
    1    2   10
   EXTRAPOLATIONS ARE USED TO COMPLETE THE SPECIFICATIONS.

*  WARNING
   NO HEAVY-KEY COMPONENT FOR COLUMN TARGETING ANALYSIS ON THE
   FOLLOWING STAGES:
    1   10
   EXTRAPOLATIONS ARE USED TO COMPLETE THE SPECIFICATIONS.

针对ASPEN模拟精馏塔中出现的警告信息，通常是因为在某些阶段缺少关键组分数据导致无法进行精确的塔内分析。解决这些警告的方法主要如下：

1. **检查进料成分和塔板设置**：确保所有必要的组分都已经被正确定义并在进料中包含，同时检查塔板设置是否合理。

2. **调整关键组分定义**：可能需要重新选择或定义轻关键组分（Light-Key Component）和重关键组分（Heavy-Key Component）。这通常涉及到确认哪些组分在精馏过程中起关键作用，并在ASPEN中进行相应的设置。

3. **修改操作条件**：调整塔内操作压力、温度等条件，使之更适于实际分离的需求。不当的操作条件可能导致关键组分表现异常。

4. **稳定性分析**：进行塔设备的流体动力学检查，确保整个系统运行稳定，避免因振荡或其他动态因素影响成分分离。

5. **增加塔板数或检查再沸器和冷凝器设置**：有可能是塔板数量不足或者再沸器与冷凝器功能不足导致关键组分不能得到有效分离和识别。

6. **使用额外的分析工具**：在ASPEN中利用额外的工具如敏感性分析等进一步诊断问题，并根据分析结果调整模拟参数。

如果调整上述参数后仍然存在问题，建议详细审查模拟的每个参数设定，或者考虑咨询更专业的技术支持以解决复杂的模拟问题。
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射雕大侠 发表于 2024-10-30 08:47
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