公开(公告)号：US20240343577A1

公开(公告)日：2024-10-17

申请号：US18292096

申请日：2022-08-25

申请人： Yara International ASA

发明人： Bent VIGELAND ,  Halvor ØIEN ,  Krzysztof BANASIAK ,  Andre DE SMET ,  Peter FAUCONNIER

IPC分类号： C01B21/46 ,  B01D53/00 ,  B01D53/14 ,  B01D53/18 ,  C01B21/28 ,  F28C1/08

CPC分类号： C01B21/46 ,  B01D53/002 ,  B01D53/1456 ,  B01D53/1493 ,  B01D53/18 ,  C01B21/28 ,  F28C1/08 ,  B01D2252/103 ,  B01D2257/404 ,  B01D2258/02

摘要： A production plant for producing nitric acid at reduced power, the system being derived from a state-of-the art dual pressure nitric acid plant wherein the system further includes a first feature for splitting a tail gas stream into a first tail gas stream in fluid communication with compressed air and with an oxygen-rich gas and a second tail gas stream, and/or a feature for splitting a tail gas stream into a third tail gas stream in fluid communication with compressed air and with an oxygen-rich gas and a fourth tail gas stream. The production plant allows for reduction of power by the air compressor. A method for operating the system, the use of the system for performing the method, and a method for revamping a state-of-the-art dual pressure nitric acid plant into the system.