Invention Application
- Patent Title: SYSTEMS AND METHODS FOR INTEGRATED AMMONIA-UREA PROCESS
- Patent Title (中): 一体化氨基酸过程的系统和方法
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Application No.: US12176534Application Date: 2008-07-21
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Publication No.: US20100016635A1Publication Date: 2010-01-21
- Inventor: Vishnu D. Singh
- Applicant: Vishnu D. Singh
- Applicant Address: US TX Houston
- Assignee: KELLOGG BROWN & ROOT LLC
- Current Assignee: KELLOGG BROWN & ROOT LLC
- Current Assignee Address: US TX Houston
- Main IPC: C07C273/04
- IPC: C07C273/04

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.
Public/Granted literature
- US07642377B1 Systems and methods for integrated ammonia-urea process Public/Granted day:2010-01-05
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