In this study, direct contact membrane distillation (DCMD) technology was proposed to produce freshwater by utilizing the low-grade waste heat from the gases purged from the absorber of a CO₂ capture unit. A Rate-based model has been used to simulate a monoethanolamine (MEA)-based CO₂ capture process in Aspen Plus® V.10, and DCMD unit was simulated with the MATLAB software. The regeneration energy requirement in the CO₂ capture process and freshwater production in DCMD unit were analyzed by varying the operating parameters. Cold seawater and purged gas were allowed to pass through the additional heat exchanger; as a result, the temperature of seawater increased. Then the warmed seawater was injected into the DCMD unit to produce freshwater. The freshwater production was 88,599 L/day at the feed temperature of 52.2 °C, which reduced to 85,050 L/day when the feed temperature declined to 50.3 °C. The freshwater production was 88,950 L/day at the permeate temperature of 10 °C, which declined to 78,450 L/day when the permeate temperature increased to 20 °C. Since adequate amount of freshwater was produced by the proposed system, the proposed integration method could help to mitigate environmental pollution and freshwater crises.

在这项研究中，提出了直接接触膜蒸馏（DCMD）技术，该技术通过利用从CO ₂捕集单元的吸收塔中排出的气体中的低级废热来生产淡水。基于速率的模型已用于在AspenPlus®V.10中模拟基于单乙醇胺（MEA）的CO ₂捕集过程，并使用MATLAB软件模拟了DCMD单元。CO _2中的再生能量需求通过改变运行参数来分析DCMD装置的捕集过程和淡水生产。允许冷海水和吹扫的气体通过附加的热交换器。结果，海水温度升高。然后，将温暖的海水注入DCMD装置以产生淡水。在进水温度为52.2°C时，淡水产量为88,599 L /天，当进水温度降至50.3°C时，淡水产量为85,050 L /天。在10°C的渗透温度下，淡水产量为88,950 L /天，当渗透温度升高至20°C时，淡水产量降至78,450 L /天。由于建议的系统产生了足够数量的淡水，因此建议的整合方法可以帮助减轻环境污染和淡水危机。