| 刘际洲， 陈东*， 曹旭， 葛晟.基于气扫式膜蒸馏的热敏料液近冰点浓缩装置[J].轻工机械,2025,43(5):47-51 |
| 基于气扫式膜蒸馏的热敏料液近冰点浓缩装置 |
| Near Freezing Point Concentration Device for Heat Sensitive Liquids Based on Sweeping Gas Membrane Distillation |
| |
| DOI：10.3969/j.issn.1005 2895.2025.05.006 |
| 中文关键词: 浓缩装置 气扫式膜蒸馏 近冰点浓缩 热敏料液 浓缩速率 浓缩能耗比 |
| 英文关键词:concentration device sweeping gas membrane distillation near freezing point concentration heat sensitive liquids concentration rate concentration energy consumption ratio |
| 基金项目: |
|
| 摘要点击次数: 2 |
| 全文下载次数: 2 |
| 中文摘要: |
| 针对热敏料液的低温浓缩需求和冷冻浓缩会造成溶质损耗的问题，课题组设计了基于气扫式膜蒸馏的热敏料液近冰点浓缩装置。该装置在0 ℃附近将料液中的水分汽化为水蒸气并通过疏水微孔膜排出，实现了常压、低温下的料液浓缩，且浓缩过程中料液溶质无损耗；通过建立数学模型并开发性能模拟软件，计算分析了膜管内直径、膜孔直径、吹扫气流速、吹扫气出吸热器温度对装置性能的影响规律。结果表明：当膜管内直径为1.0 mm、膜孔直径为0.2 μm、吹扫气流速为0.3 m/s、吹扫气出吸热器温度为-6 ℃时，装置的浓缩速率为0.182 kg/h、浓缩能耗比为0.294 kWh/kg。该研究为进一步优化浓缩装置性能提供了参考，有助于实现该装置的产业化应用。 |
| 英文摘要: |
| Regarding the issue of solute loss caused by low temperature concentration requirements and freeze concentration methods for heat sensitive liquids, a near freezing point concentration device based on sweeping gas membrane distillation was designed. This device achieved concentration of heat sensitive liquids at near 0 ℃ and atmospheric pressure by vaporizing water from the liquid into water vapor, which was then expelled through hydrophobic microporous membranes with no solute loss during the concentration process. The effects of membrane tube inner diameter, membrane pore size, purge gas flow rate, and temperature of sweeping gas out of heat receiver on device performance were analyzed by establishing a mathematical model and developing performance simulation software. The results indicate that when the inner diameter of the membrane tube is 1.0 mm, the membrane pore diameter is 0.2 μm, the sweeping gas flow rate is 0.3 m/s, and the temperature of the sweeping gas exiting the heat receiver is -6 ℃, the device achieves a concentration rate of 0.182 kg/h and an energy consumption ratio of 0.294 kWh/kg. The research provides a reference for further optimizing the performance of the concentration device and is conducive to its industrial application. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
