Invention Publication
- Patent Title: UREA PRODUCTION PROCESS AND PLANT
-
Application No.: US18282123Application Date: 2022-04-05
-
Publication No.: US20240217924A1Publication Date: 2024-07-04
- Inventor: Paolo Bertini , Matteo Fumagalli
- Applicant: Casale SA
- Applicant Address: CH Lugano
- Assignee: Casale SA
- Current Assignee: Casale SA
- Current Assignee Address: CH Lugano
- Priority: EP 167251.4 2021.04.07
- International Application: PCT/EP2022/058933 2022.04.05
- Date entered country: 2023-09-14
- Main IPC: C07C273/04
- IPC: C07C273/04 ; B01J19/00 ; B01J19/18 ; C07C273/16

Abstract:
Process for the preparation of urea granules comprising the steps of obtaining an aqueous urea solution from one or more synthesis and recovery steps wherein ammonia and carbon dioxide are reacted together, subjecting the aqueous urea solution to an evaporation step wherein water is removed to obtain a urea melt (1), processing and treating said urea melt in a granulation step (7) and optionally in a cooling section (10) to obtain solid urea granules (14); the process further comprises a scrubbing step (3) of granulation offgas and an atmospheric evaporation step (32) to recover a urea solution (2) and a water-saturated air stream (18): the water-saturated air stream is fed back to the scrubbing section (3) without condensation, and the recovered urea solution is conveyed to the granulation step (7).
Public/Granted literature
- US12103905B2 Urea production process and plant Public/Granted day:2024-10-01
Information query