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不同螺旋环距离对二氧化碳₂通过胺溶液吸收在同心圆形膜接触器中的影响

Chii-Dong Ho¹, Jui-Wei Ke¹, Jun-Wei Lim^2,3

¹Department of Chemical and Materials Engineering, Tamkang University, Tamsui, New Taipei 251301, Taiwan.

|July 26, 2024

概括

在膜接触器中优化螺旋环间距显著增加了使用单乙胺 (MEA) 溶液的二氧化碳吸收流量. 下降的场地增强了流,减少了两极分化,以获得更有效的碳捕获.

科学领域:

化学工程是化学工程的重要组成部分.
环境科学环境科学
材料科学材料科学材料科学

背景情况:

碳捕获技术对于缓解气候变化至关重要.
单甲胺 (MEA) 溶液被广泛用于二氧化碳的吸收.
度极化和质量转移限制阻碍了吸收效率.

研究的目的:

通过优化螺旋环间距配置,增强膜接触器中的二氧化碳吸收流量.
为了研究上升和下降螺旋曲线对流和度极化的影响.
开发二氧化碳吸收流量的预测模型,并评估经济可行性.

主要方法:

将不同的上升和下降螺旋环距离配置集成到同心圆形膜接触器中.
插入螺旋杆以减轻度极化和增强流.
开发和验证一个理论的一维模型,用于吸收流量预测.
通过各种操作参数对理论预测进行实验验证.
基于吸收流量改善和功耗的经济可行性评估.

主要成果:

与空道相比,优化的螺旋环阵地显著提高了二氧化碳吸收流量.
下降的螺旋环距离显示出更高的流强度,导致偏振阻力降低.
在特定条件下,吸收流量显著提高83.69% (40%的二氧化碳输入,MEA流量为5cm3/s).
一个通用的谢尔伍德数表达式是为了质量转移系数预测而衍生出来的.

结论:

优化螺旋环距离配置是提高膜接触器中二氧化碳吸收流量的有效策略.
下降的螺旋曲线提供了优越的性能,因为增加了流和减少了极化.
开发的模型和谢尔伍德数表达式为设计和优化二氧化碳捕获系统提供了实用工具.
螺旋电线模块显示出提高碳捕获技术的效率和经济可行性的承诺.

关键词:

吸收二氧化碳的吸收方式谢尔伍德号码谢尔伍德号码度极化度极化集中的膜接触器的集中的膜接触器螺旋环的投球距离螺旋环的投球距离

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