Invention Grant
- Patent Title: Method for the production of urea from natural gas
- Patent Title (中): 从天然气生产尿素的方法
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Application No.: US11665278Application Date: 2005-08-18
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Publication No.: US07674932B2Publication Date: 2010-03-09
- Inventor: William Davey , Thomas Wurzei
- Applicant: William Davey , Thomas Wurzei
- Applicant Address: DE Frankfurt am Main
- Assignee: Lurgi AG
- Current Assignee: Lurgi AG
- Current Assignee Address: DE Frankfurt am Main
- Agent Jonathan Myers; Andrew Wilford
- Priority: DE102004049774 20041012
- International Application: PCT/EP2005/008936 WO 20050818
- International Announcement: WO2006/039960 WO 20060420
- Main IPC: C07C273/02
- IPC: C07C273/02 ; C07C237/04

Abstract:
Disclosed is a method for the production of urea from natural gas, wherein a) natural gas undergoes partial oxidation or autothermal reformation with a gas containing oxygen in a first step and the raw synthesis gas thus arising, consisting essentially of carbon monoxide, carbon dioxide, methane and hydrogen, can be transformed by catalytic conversion of CO and H2O to form CO2 and H2, whereupon carbon monoxide and methane are removed in a multistep gas cleaning process and the hydrogen is converted into ammonia upon addition of nitrogen, and subsequently, b) the ammonia is recombined with the previously separated carbon dioxide in a second step and the ammonia is thus fully converted into urea.
Public/Granted literature
- US20080207948A1 Method for the Production of Urea from Natural Gas Public/Granted day:2008-08-28
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