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首页> 外文期刊>Energy Conversion & Management >Implementing multiple-effect distillation and reverse osmosis thermal coupling to improve desalination process performance in combined water and power plants
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Implementing multiple-effect distillation and reverse osmosis thermal coupling to improve desalination process performance in combined water and power plants

机译：实施多效蒸馏和反渗透热耦合，提高水和发电厂中的脱盐工艺性能

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摘要

Cogeneration has recently been an appropriate engineering approach to supply increasing energy demands. The present study demonstrates a significant influence on increase in productivity and reduction of utility consumption of thermal desalination, considering a novel internally coupled multiple-effect distillation and reverse osmosis desalination process in a cogeneration of water and power plant. The proposed power generation unit, consisting of two SGT600 gas turbines as prime movers, two heat recovery steam generators and one back-pressure steam turbine, has been applied. The objective is to propose a modified multiple-effect distillation process, due to availability of sufficient cooling water, provided by reverse osmosis reject water. The basic configuration comprises a hybrid desalination using a dual purpose condenser, results of which showed a 45% reduction in electrical energy consumption of multiple-effect distillation, accompanying a 67% decrease in intake water cost. In modified configuration, condenser temperature decreases from 48 to 45celcius, allowing number of effects to increase from 5 to 7. Therefore, produced water rate and gain output ratio of the modified multiple effect distillation increase by 30% and 31%, respectively, while specific energy consumption decreases by 6%, causing a two-year reduction in cogeneration of water and power plant pay-back period compared to the basic configuration.
机译：热电联产最近是一种适当的工程方法，供应越来越多的能源需求。本研究表明，考虑到水和发电厂热电联产的新型内耦合多效蒸馏和反渗透脱水过程，对生产率的增加和耐热消耗的增加的显着影响。施加由两个SGT600燃气轮机作为主要移动器，两个热回收蒸汽发生器和一个背压蒸汽涡轮机组成的发电单元。目的是提出一种改性的多效蒸馏工艺，由于具有足够的冷却水的可用性，通过反渗透抑制水提供。基本配置包括使用双目的冷凝器的杂交脱盐，结果表明，多效蒸馏的电能消耗降低了45％，随着摄入水成本的67％降低。在改进的配置中，聚光温度从48到45celcius降低，允许效果的数量从5到7增加。因此，产生的水速和增益输出比分别增加30％和31％，同时具体增加30％和31％能耗降低了6％，与基本配置相比，水和电厂薪水后期的热电联产两年减少。

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