Today shortage of fresh water resources is a serious crisis the world is faced with. Therefore,seawater desalination is an effective way to solve shortage of fresh water resources the human beings are faced with. Hydrate seawater desalination method based on compression refrigeration cycle was proposed and the experiment was carried out hydrate seawater desalination. Artificial seawater with 3 different seawater salinities(25‰,30‰,35‰)was chosen and were experimented at controlled temperature of 20℃ and 4 different filling pressures(3.6,3.8,4,4.2 MPa).Experiment results show that during the hydrate growth,the temperature increase rate is affected by the growth amount of hydrate,degree of porosity of hydrate and flow of CO2gas,the increase amplitude is in the range of 1~5℃.The precooling time will be shortened significantly with the increase of filling pressure under different seawater salinity. The mass of desalinated water reaches the maximum 2922.2 g at seawater salinity of 35‰ and filling pressure of 4.2 MPa,at this time,the desalination efficiency reaches max.43.6% and the desalination rate is 118.9 g/min.%淡水资源短缺是当今世界面临的又一次危机,所以进行海水淡化是解决人类所面临的淡水资源匮乏的有效途径.本文提出了基于压缩式制冷循环的水合物海水淡化方法,并进行了水合物海水淡化试验,试验选取3种不同盐度(25‰、30‰、35‰)的人工海水,控制其温度为20 ℃,在4种不同充注压力(3.6,3.8,4.0,4.2 MPa)下进行试验.试验结果表明,水合物生长时温度升高幅度受到水合物生成量、水合物的疏松程度以及气流的影响,升高幅度在1~5 ℃范围内,预冷时间都会随着充注压力的升高而有明显缩短,淡化水的质量在盐度为35‰充注压力为4.2 MPa时达到最大,为3922.2 g,此时淡化效率也达到最高的43.6%,淡化速率为118.9 g/min.
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