Evaporation 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.