Abstract
Since the maximum process temperature in thermal saline water conversion is limited by the formation of scale on heat transfer surfaces, the seeding processes using calcium carbonate or sulfate as seed have been reported to be effective in limiting calcium scale formation. They suffer from several disadvantages which can probably be overcome by barium sulfate as seed. Finely powdered barite was effective in laboratory and pilot plant experiments. Thus the present technical feasibility study was elaborated: a multi-stage flash evaporator plant working according to the barium sulfate seeding process (BSS), which comprises recycling of the barium sulfate seed and inherent decrease of the Ca concentration in the circulated brine.
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