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A Demonstration of High Temperature MED-TVC Desalination Technology in the Gulf Area

机译：海湾地区高温MED-TVC海水淡化技术示范

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This work focuses on a multiple effect desalination system with thermal vapor compressor (MED-TVC) operating at a top brine temperature (TBT) of 85°C which is significantly above the common operation temperatures of conventional MED-TVC systems, limited to a range below 70°C mainly due to scale risk. Such increase in TBT would enhance the production and system economics. A pilot plant installed at the Desalination Technologies Research Institute (DTRI) of the Saline Water Conversion Corporation (SWCC) in Jubail, Saudi Arabia was operated at the TBT of 85°C over a 5-month test period. Visual inspection of tube bundles after the test, in conjunction with chemical scale analysis showed that scaling was limited to a soft thin film scale, which was easily removed by flushing with water, which confirmed a low fouling potential analyzed from operation data. Techno-economic analysis of the MED-TVC system operating at a TBT of 85°C, indicated up to 34% reduction in steam consumption and up to 16% reduction in the levelized cost of water (LCOW), when compared with a MED-TVC unit operating at a conventional TBT of 65°C. Accordingly, the high temperature MED-TVC systems operating at a TBT of 85°C can be considered as a financially competitive and technologically reliable desalination option for the Gulf area which has challenging seawater characteristics.
机译：这项工作着重于多效淡化系统，其中热蒸汽压缩机（MED-TVC）在最高盐水温度（TBT）为85°C下运行，该温度明显高于常规MED-TVC系统的常见运行温度，并限制在一定范围内。低于70°C主要是由于水垢风险。 TBT的增加将提高生产和系统经济性。在沙特阿拉伯朱拜勒的盐水转化公司（SWCC）的海水淡化技术研究所（DTRI）中安装的中试工厂在5个月的测试时间内在85°C的TBT下运行。测试后对管束进行目视检查，并结合化学水垢分析表明，水垢仅限于软薄膜水垢，可通过用水冲洗轻松去除水垢，这证实了从运行数据分析得出的低结垢潜力。对MED-TVC系统在85°C的TBT下运行的技术经济分析表明，与MED-TVC系统相比，蒸汽消耗降低了34％，水的平均成本（LCOW）降低了16％。在传统的65°C TBT下运行的TVC装置。因此，对于海水地区具有挑战性的海湾地区，在85°C的TBT下运行的高温MED-TVC系统可以被认为是经济上竞争和技术可靠的脱盐选择。

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