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公开(公告)号：WO2020235999A1
公开(公告)日：2020-11-26
申请号：PCT/NL2020/050326
申请日：2020-05-22
Applicant: STAMICARBON B.V.
Inventor： PUCI, Giusy Elisa , DIRKX, Wilfried Marc Renaat
IPC: B01D47/05 , B01D47/06 , B01D47/10 , B01D47/12 , C07C273/16
Abstract: Disclosed is a urea finishing method including an off-gas treatment, the method comprising urea finishing and supplying the off-gas to a quenching zone and to a scrub column comprising a sump and a venturi stage, wherein the sump has a split sump configuration with two compartments.
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公开(公告)号：WO2017196167A1
公开(公告)日：2017-11-16
申请号：PCT/NL2017/050287
申请日：2017-05-09
Applicant: STAMICARBON B.V.
Inventor： HIGGINS, Brian Sayre , TATE III, John Marshall , YATES, Robert Arthur , POMERLEAU, Marcel Julien , HEON, Jon Michael , DIRKX, Wilfried Marc Renaat , COLOMA GONZÁLEZ, Juan
IPC: B01D47/06 , B01D47/10 , B01D53/58 , C07C273/16 , C05C9/00
Abstract: Disclosed are methods and systems for removing submicron particles from a gas stream, in particular from urea prilling off-gas, wherein a Venturi ejector is used. A method comprises contacting a gas stream containing submicron particles in a Venturi ejector with an injected high velocity scrubbing liquid to provide a pumping action, wherein the scrubbing liquid has an initial velocity of at least 2 m/s and wherein the ratio of scrubbing liquid and gas flow is between 0.0005 and 0.0015 (m³/h) / (m³/h). The disclosure also pertains to a prilling tower having a gas stream treatment system comprising a Venturi ejector at the top of the prilling tower, and to a method of modifying an existing prilling tower.
Abstract translation: 公开了用于从气流，特别是尿素造粒废气中去除亚微米颗粒的方法和系统，其中使用文丘里喷射器。 一种方法包括使文丘里喷射器中含有亚微米颗粒的气流与注入的高速洗涤液接触以提供泵送作用，其中洗涤液的初始速度为至少2m / s，并且其中洗涤液和 气体流量在0.0005和0.0015（m3 / h）/（m3 / h）之间。 本发明还涉及具有气流处理系统的造粒塔以及改造现有造粒塔的方法，所述气流处理系统包括位于造粒塔顶部的文丘里喷射器。
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Patent Agency Ranking
公开(公告)号：EP3454971B1
公开(公告)日：2020-07-15
申请号：EP17727414.9
申请日：2017-05-09
Applicant: Stamicarbon B.V.
Inventor： HIGGINS, Brian Sayre , TATE III, John Marshall , YATES, Robert Arthur , POMERLEAU, Marcel Julien , HEON, Jon Michael , DIRKX, Wilfried Marc Renaat , COLOMA GONZÁLEZ, Juan
IPC: B01D47/06 , B01D47/10 , B01D53/58 , C07C273/16 , C05C9/00
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公开(公告)号：EP3016731B1
公开(公告)日：2018-01-17
申请号：EP14739266.6
申请日：2014-07-04
Applicant: Stamicarbon B.V.
IPC: B01D47/06 , B01D47/10 , C07C273/02
CPC classification number: B01D47/10 , B01D47/06 , C07C273/02
Abstract: Disclosed is a method for the removal of urea dust from the off- gas of a finishing section (1) of a urea production plant, the method comprises subjecting the off-gas to quenching with water (06) so as to produce quenched off-gas, and subjecting the quenched off-gas to scrubbing using at least one venturi scrubber (11). As a result, a lower pressure drop over the scrubber is attained, and a more efficient growth of urea particles, facilitating the removal thereof.
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公开(公告)号：EP3454971A1
公开(公告)日：2019-03-20
申请号：EP17727414.9
申请日：2017-05-09
Applicant: Stamicarbon B.V.
Inventor： HIGGINS, Brian Sayre , TATE III, John Marshall , YATES, Robert Arthur , POMERLEAU, Marcel Julien , HEON, Jon Michael , DIRKX, Wilfried Marc Renaat , COLOMA GONZÁLEZ, Juan
IPC: B01D47/06 , B01D47/10 , B01D53/58 , C07C273/16 , C05C9/00
Abstract: Disclosed are methods and systems for removing submicron particles from a gas stream, in particular from urea prilling off-gas, wherein a Venturi ejector is used. A method comprises contacting a gas stream containing submicron particles in a Venturi ejector with an injected high velocity scrubbing liquid to provide a pumping action, wherein the scrubbing liquid has an initial velocity of at least 25 m/s and wherein the ratio of scrubbing liquid and gas flow is between 0.0005 and 0.0015 (m3/h)/(m3/h).
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公开(公告)号：EP3016731A1
公开(公告)日：2016-05-11
申请号：EP14739266.6
申请日：2014-07-04
Applicant: Stamicarbon B.V.
IPC: B01D47/06 , B01D47/10 , C07C273/02
CPC classification number: B01D47/10 , B01D47/06 , C07C273/02
Abstract: Disclosed is a method for the removal of urea dust from the off- gas of a finishing section (1) of a urea production plant, the method comprises subjecting the off-gas to quenching with water (06) so as to produce quenched off-gas, and subjecting the quenched off-gas to scrubbing using at least one venturi scrubber (11). As a result, a lower pressure drop over the scrubber is attained, and a more efficient growth of urea particles, facilitating the removal thereof.
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公开(公告)号：EP3972717A1
公开(公告)日：2022-03-30
申请号：EP20743880.5
申请日：2020-05-22
Applicant: Stamicarbon B.V.
Inventor： PUCI, Giusy Elisa , DIRKX, Wilfried Marc Renaat
IPC: B01D47/05 , B01D47/06 , B01D47/10 , B01D47/12 , C07C273/16
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