| 摘要 |
<p>1506129 Ammonium carbamate SNAMPROGETTI SpA 20 April 1976 [23 April 1975] 16012/76 Heading C1A Ammonium carbamate solution is formed by feeding a mixture of ammonium carbonate solution and a gas comprising ammonia, carbon dioxide, and water vapour, at a pressure of from 50 to 300 atmospheres, into a horizontal or substantially horizontal tubular absorption zone maintained under a static pressure. In Fig. 2 the ammonium carbonate solution and gas mixture are fed via lines 2 and 3 to the inlet end of absorber 1, the mixture passes through the bundle of tubes 7 where the gases are absorbed, the carbamate solution is discharged via line 5 which also maintains the desired static resource 6 in the tubular zone. The static pressure is preferably from 0À5 to 5 atmospheres.</p> |
