公开(公告)号：US10913025B2

公开(公告)日：2021-02-09

申请号：US15536077

申请日：2015-12-17

Applicant: Stamicarbon B.V.

Inventor： Cain Christopher Doherty ,  Aloysius Mechteldis Emmanuel Schoenmakers

IPC: B01D47/05 ,  B01D47/06 ,  B01D47/10 ,  C05C9/00 ,  C07C273/04 ,  C07C273/02

Abstract: Disclosed is a method for the removal of urea dust from the off-gas of a finishing section of a urea production plant. the method comprises subjecting the off-gas to quenching with water so as to produce quenched off-gas. The quenched off-gas is subjected to humidification by mixing said quenched gas stream with a humidification fluid selected from (a) saturated steam and (b) superheated steam mixed with a second aqueous stream, so as to produce a humidified gas stream, subjecting said humidified gas stream to particle separation (i.e., dust removal) by means of a scrubbing liquid in which at least part of the particles in the gas stream are soluble.

公开(公告)号：US12179138B2

公开(公告)日：2024-12-31

申请号：US17141328

申请日：2021-01-05

Applicant: STAMICARBON B.V.

Inventor： Cain Christopher Doherty ,  Aloysius Mechteldis Emmanuel Schoenmakers

IPC: B01D47/10 ,  B01D47/05 ,  B01D47/06 ,  C05C9/00 ,  C07C273/02 ,  C07C273/04

Abstract: Disclosed is a method for the removal of urea dust from the off-gas of a finishing section of a urea production plant. the method comprises subjecting the off-gas to quenching with water so as to produce quenched off-gas. The quenched off-gas is subjected to humidification by mixing said quenched gas stream with a humidification fluid selected from (a) saturated steam and (b) superheated steam mixed with a second aqueous stream, so as to produce a humidified gas stream, subjecting said humidified gas stream to particle separation (i.e., dust removal) by means of a scrubbing liquid in which at least part of the particles in the gas stream are soluble.