Evaporaion process for producing high- quality drinking water and high-grade brine from any-grade salt water.

摘要

The invention consists of a cost-effective process and facilities for obtaining high quality drinking water and high-grade brine as a chemical raw material from raw water regardless of how much salt it contains. When combined with a thermal power-generation process, the plant also produces electric power with a fuel utilization of over 85%. The applied evaporation process using waste heat works with a water vapor-saturated air circulation across a range of temperatures with recuperative preheating of the salt water. Plants like this can consist of a large number of evaporation modules and thus be adjusted according to any demand of high quality drinking water. The evaporation modules work at up to 4 system pressure levels and can use the waste heat of the higher system pressure levels in the subsequent system pressure levels. Heat consumption values of less than 10 kWh per m3 of drinking water can thus be achieved. The modular design and the use of commercially available gas turbines/generator sets are allowing a performance range from 3.0 m3 to 1000 m3 of high quality drinking water per hour. Lower rates of drinking water production can be obtained using the waste heat from combustion engines.