公开(公告)号：US20190257744A1

公开(公告)日：2019-08-22

申请号：US16330986

申请日：2017-09-19

Applicant: SAIPEM S.p.A.

Inventor： Cristina Cerrone ,  Lino Carlessi ,  Alberto Serrafero ,  Francesco Viola

IPC: G01N21/15 ,  G01N21/65 ,  G01N1/22 ,  G01N21/85

Abstract: A system for analysis of vent gas of a urea plant, comprising: a Raman spectroscope; a sampling conduit that connects the spectroscope to a main pipe of the urea plant configured to convey a sample stream to be analysed to the spectroscope; and a temperature-adjusting device, operated by a temperature controller and acting on at least one thermal treatment portion of the conduit configured to adjust the temperature of the sample stream circulating in the conduit.

公开(公告)号：US11376542B2

公开(公告)日：2022-07-05

申请号：US16652607

申请日：2018-10-25

Applicant: SAIPEM S.p.A.

Inventor： Cristina Cerrone ,  Jacopo Cedrati

IPC: B01D53/00 ,  C07C273/16 ,  B01D3/10 ,  B01D53/14

Abstract: An apparatus for treatment of process vapours coming from a vacuum concentration section of a urea plant, comprising a vacuum system having a plurality of successive condensation stages, connected in series by respective line portions and crossed in series by process vapours to be treated; the apparatus has at least one primary steam condensate inlet for feeding steam condensate to the vacuum system and positioned, with reference to a circulation direction of the process vapours in the vacuum system, upstream of at least one selected condensation stage, or in at least one selected condensation stage.

公开(公告)号：US11243168B2

公开(公告)日：2022-02-08

申请号：US16330986

申请日：2017-09-19

Applicant: SAIPEM S.p.A.

Inventor： Cristina Cerrone ,  Lino Carlessi ,  Alberto Serrafero ,  Francesco Viola

IPC: G01N21/65 ,  G01N1/22 ,  G01N21/15 ,  G01N21/85 ,  G01N21/01 ,  G01N1/10 ,  C07C273/04

Abstract: A system for analysis of vent gas of a urea plant, comprising: a Raman spectroscope; a sampling conduit that connects the spectroscope to a main pipe of the urea plant configured to convey a sample stream to be analysed to the spectroscope; and a temperature-adjusting device, operated by a temperature controller and acting on at least one thermal treatment portion of the conduit configured to adjust the temperature of the sample stream circulating in the conduit.

公开(公告)号：US20200254377A1

公开(公告)日：2020-08-13

申请号：US16652607

申请日：2018-10-25

Applicant: SAIPEM S.p.A.

Inventor： Cristina Cerrone ,  Jacopo Cedrati

IPC: B01D53/00 ,  B01D53/14 ,  B01D3/10 ,  C07C273/16

Abstract: An apparatus for treatment of process vapours coming from a vacuum concentration section of a urea plant, comprising a vacuum system having a plurality of successive condensation stages, connected in series by respective line portions and crossed in series by process vapours to be treated; the apparatus has at least one primary steam condensate inlet for feeding steam condensate to the vacuum system and positioned, with reference to a circulation direction of the process vapours in the vacuum system, upstream of at least one selected condensation stage, or in at least one selected condensation stage.