Apparatus for increasing the yield and the production potential of urea reactors
US5304353A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1992 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Jan 15, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/00777
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Urea is formed by the synthesis of ammonia with carbon dioxide at high pressure and temperature in an internal space of reactors through which flow a liquid phase cocurrently with a gas phase. The reactors are divided into compartments to avoid excessive mixing of the entire liquid phase and to allow the intermittent redistribution of the gas in bubbles of a suitable size for increasing the exchange of heat and matter between the two phases. At each passage from one compartment to the next, the liquid phase and the gas phase are made to flow on separate routes and are distributed in each compartment with a continuous, permanent, and even flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.