膜科学与技术

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Optimization and energy efficiency analysis of heat pump-vacuum membrane distillation process

Authors： LIU Zheng, DING Ping, LIU Guochang

Units： 1. The Institute of Seawater Desalination and Multipurpose Utilization, SOA(Tianjin), Tianjin 300192, China; 2. China Astronaut Research and Training Center, Beijing, 100094, China

KeyWords： Heat pump, membrane distillation, hydrophobic membrane, water production, specific energy consumption

ClassificationCode：TQ028.8；X703

year,volume(issue):pagination： 2024,44(1):102-107

Abstract：

The experimental study is focus on the heat imbalance in heat pump-membrane distillation process. The heat pump system heat balance is realized by using two vaccum membrane distillation modules and merging them into the liquid circulation flow path, so that they can respectively undertake the heat recovery and exclude excess heat. According to the test, it is found that the MD1200 and MD200 were the best dual membrane combination. The dual-membrane combination was used for continuous 8h salt-containing membrane distillation treatment, and the test results show that the dual-membrane-module combination can obtain stable and continuous operation of membrane distillation, with a total water yield of up to 1.9L/h, and a maximum specific energy consumption of the system of up to 310W.h/kg of water. The energy consumption performance is better than that of the membrane distillation process without heat recovery, and is comparable to the industrialized multi-effect membrane distillation process, which is expected to become a new low-energy membrane distillation process that can be applied industrially.

Funds：

项目来源“基于空间水处理任务的膜技术研究”（2016SY54A0901）；中央级公益性科研院所基本科研业务费专项资金项目“生物药用超滤膜与膜蒸馏用微孔膜研制”(K-JBYWF-2022-ZD01)。

AuthorIntro：

刘铮（1982-），女，山东济南人，高级工程师，博士研究生，膜技术与应用，E-mail：liuzheng@isdmu.com.cn

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