Patent ID: 7732640

Claim:
Process for urea production from ammonia and carbon dioxide comprising a first process step in which ammonia ( 7 ) and carbon dioxide ( 6 ) are obtained, subjecting natural gas ( 1 ) to reforming treatments ( 12 , 14 ), and a second step of urea ( 8 a ) production from said ammonia ( 7 ) and from carbon dioxide, through a formation of a solution comprising urea and ammonium carbamate in a urea synthesis reactor ( 20 ) and a subsequent decomposition of said ammonium carbamate and urea recovery, characterized in that it comprises the steps of: treating combustion smokes ( 5 ) comprising carbon dioxide with an aqueous solution ( 9 a ) comprising a part ( 7 b ) of said ammonia ( 7 ), obtaining an aqueous ammonium carbamate solution ( 9 c ); supplying the solution ( 9 c ) thus obtained to said second process step.