首页> 外国专利> 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

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

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.
机译:通过尿素的水解以及氨和二氧化碳的脱附,从由偶合的尿素和氨合成的过程冷凝物中除去尿素,氨和二氧化碳的改进方法。相对于氨而言较差的工艺冷凝物在反应塔中在约15至42巴的压力和约200至320℃的温度下与蒸汽一起处理,以形成包含氨,二氧化碳的气体混合物。 ,水蒸气以及几乎不含尿素,氨和二氧化碳的水性液体。

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