Easy-to-Operate and Energy-Efficient Four-Product Dividing Wall Columns with Two Partition Walls
Easy-to-Operate and Energy-Efficient Four-Product Dividing Wall Columns with Two Partition Walls
复制标题
易于操作且节能的四产品分隔壁柱，具有两个隔墙
DOI：
10.1021/acs.iecr.0c00411
复制
发表时间：
2020-06
影响因子：
4.2
通讯作者：
Xigang Yuan
中科院分区：
文献类型：
--
作者：
Xiaolong Ge;Botong Liu;Botan Liu;Hongxing Wang;Xigang Yuan
四产品分隔壁塔 (FPDWC) 被认为比用于多产品分离的传统塔序列更节能。与复杂的萨金特配置相比，具有两个隔墙的 FPDWC 具有内部结构更简单的优点，并且在相对于主导分裂的某些限制下没有能量损失。然而，它们的工业应用仍然受到不可控的蒸气分裂的限制。为了解决这些障碍，塔段之间的双向汽液热耦合流被转换为纯液体传输流，以获得当前工作中的新变体。这些合成结构的特点是没有不可控的蒸气分裂，并且对于工业实施来说是令人鼓舞的。详细分析表明，在最小蒸气流条件下，这些衍生物在热力学上与原始衍生物等效。借助顺序优化方法，在实际情况中验证了易于操作的布置和具有不可控蒸汽分裂的配置之间的进一步功能等效性。此外，考虑到每个隔断墙的替代终止点，列举了所有新的易于操作的变体。最后，我们通过将策略扩展到适用于具有各种主要分裂的分离任务的补充热耦合配置，扩展了具有两个隔墙的 FPDWC 的搜索空间，这为从业者提供了多种实施选择。通过采用这些新配置，可以显着减轻多产物蒸馏系统的能量消耗，并且可以消除与不可控蒸气分裂相关的操作不确定性。
Four-product dividing wall columns (FPDWCs) are considered as more energy-efficient than the conventional column.sequence for multiproduct separation. The FPDWCs with two partition walls have the superiority of a simpler internal structure.without an energy penalty under certain restrictions with respect to the dominating split, as compared with the complex Sargent.configuration. Nevertheless, their industrial applications are still constrained by uncontrollable vapor splits. To handle these.obstacles, the bidirectional vapor−liquid thermal coupling streams between column sections were converted to liquid-only transfer.streams to obtain new variants in the present work. These synthesized configurations are characterized by no uncontrollable vapor split and are encouraging for industrial implementation. Elaborate analyses indicate that these derivatives are thermodynamically equivalent to the original ones under the minimum vapor flow condition. Further functional equivalence between the easy-to-operate arrangements and the configurations with uncontrollable.vapor splits was validated in practical situations, with the aid of the sequential optimization method. Besides, considering alternative.terminating points for each partition wall, all of the new easy-to-operate variants were enumerated. Finally, we expand the search.space of FPDWCs with two partition walls by extending the strategy to supplementary thermally coupled configurations applicable.to the separation task with various dominating splits, which provide multiple options for practitioners to implement. By employing.these new configurations, the energy consumption of the multiproduct distillation system could be substantially mitigated and the.operational uncertainty associated with uncontrollable vapor splits could be eliminated.
登录
查看更多内容
影响因子：
2.1
作者：
Jiao Sun;H. Ge;Wenyi Chen;N. Chen;Xiangwu Chen
通讯作者：
Jiao Sun;H. Ge;Wenyi Chen;N. Chen;Xiangwu Chen
影响因子：
2.1
作者：
G. Kaibel
通讯作者：
G. Kaibel
影响因子：
3.9
作者：
W. Luyben
通讯作者：
W. Luyben
影响因子：
4.2
作者：
K. Kraemer;S. Kossack;W. Marquardt
通讯作者：
K. Kraemer;S. Kossack;W. Marquardt
DOI：
10.1016/j.compchemeng.2019.106520
发表时间：
2019-10
期刊：
Comput. Chem. Eng.
影响因子：
--
作者：
T. Waltermann;M. Skiborowski
通讯作者：
T. Waltermann;M. Skiborowski