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PROCESS FOR THE REMOVAL OF UREA,AMMONIA AND CARBON DIOXIDE FROM DILUTE AQUEOUS SOLUTIONS CONTAINING UREA,AMMONIA AND CARBON DIOXIDE
PROCESS FOR THE REMOVAL OF UREA,AMMONIA AND CARBON DIOXIDE FROM DILUTE AQUEOUS SOLUTIONS CONTAINING UREA,AMMONIA AND CARBON DIOXIDE
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机译:从尿素,氨气和二氧化碳的稀水溶液中去除尿素,氨气和二氧化碳的方法
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摘要
An improved process for the removal of urea, ammonia, and carbon dioxide from process condensate derived from coupled urea and ammonia syntheses by hydrolysis of urea and desorption of ammonia and carbon dioxide. Process condensate poor with respect to ammonia is treated at a pressure of between about 15 and 42 bar and a temperature of between about 200 DEG C. and 320 DEG C. in a reaction column with steam to form a gas mixture containing ammonia, carbon dioxide, and water vapor, and an aqueous liquid virtually free of urea, ammonia, and carbon dioxide.
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