公开(公告)号：US20190218097A1

公开(公告)日：2019-07-18

申请号：US15768510

申请日：2017-09-19

Applicant: Stamicarbon B.V.

Inventor： Leonardus Hubertus POSTMA ,  Maria Paz MUÑOZ LÓPEZ ,  Martinus VOORWINDEN

IPC: C01B21/40 ,  B01D53/00 ,  B01D53/86

CPC classification number: C01B21/40 ,  B01D53/002 ,  B01D53/14 ,  B01D53/1493 ,  B01D53/8625 ,  B01D53/8631 ,  B01D2252/103 ,  B01D2257/404 ,  C01B21/26 ,  Y02C20/20

Abstract: Disclosed is a dual pressure plant for the production of nitric acid on the basis of the oxidation of ammonia. The plant comprises a reactor configured to produce a burner gas stream; a gas cooling section configured to form a cooled burner gas; a condensation section configured to form an aqueous nitric acid condensate and an uncondensed nitrogen oxides gas stream; an absorption section configured to produce raw nitric acid and a tail gas; and a tail gas treatment system configured to form a purified tail gas. In a tail gas heating section a further heat exchanger configured to receive heat from the burner gas stream, said further heat exchanger being positioned relatively close to the reactor.

公开(公告)号：US20230257268A1

公开(公告)日：2023-08-17

申请号：US18245254

申请日：2022-07-15

Applicant: STAMICARBON B.V.

Inventor： Carmen PÉREZ SALMERÓN ,  Aldo Maria IAQUANIELLO ,  Joey DOBREE ,  Maria Paz MUÑOZ LÓPEZ

IPC: C01B21/40 ,  C01C1/04 ,  B01J8/02 ,  B01J19/24 ,  B01D53/18

CPC classification number: C01B21/40 ,  C01C1/0405 ,  B01J8/0278 ,  B01J8/0285 ,  B01J19/245 ,  B01D53/18 ,  B01J2208/00504

Abstract: The disclosure pertains to a nitric acid production process and plant. The process involves supplying an oxygen gas stream and ammonia feedstock to the burner section. In embodiments, a part of the tail gas stream (4) is heated in a tail gas heating section (7) and supplied to the burner section (1).