1975 van Moorsel CFI 3922222 Crystalliser

A first patent of Bill van Moorsel of CFI which describes a purification method of the condensate of a crystallizer by sending this condensate to a low pressure boiler or heat exchanger and evaporate to accomplish thermal decomposition of urea and any biuret into ammonia and carbon dioxide, which are removed and recycled to the urea plant. The remaining water is free of urea and is claimed to be usable as boiler feed water.


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