Invention Application
US20100016635A1 SYSTEMS AND METHODS FOR INTEGRATED AMMONIA-UREA PROCESS 有权
一体化氨基酸过程的系统和方法

SYSTEMS AND METHODS FOR INTEGRATED AMMONIA-UREA PROCESS
Abstract:
Systems and methods for producing urea are provided. A method for producing urea can include exchanging heat from a syngas comprising hydrogen and carbon dioxide to a urea solution comprising urea and ammonium carbamate. The heat transferred can be sufficient to decompose at least a portion of the ammonium carbamate. In one or more embodiments, the syngas can be reacted with liquid ammonia to provide a carbon dioxide lean syngas and an ammonium carbamate solution. The ammonium carbamate solution can be heated to a temperature of about 180° C. or more. At least a portion of the ammonium carbamate in the heated ammonium carbamate solution can be dehydrated to provide the urea solution.
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