公开(公告)号：US20200325345A1

公开(公告)日：2020-10-15

申请号：US16915668

申请日：2020-06-29

Applicant: HALDOR TOPSØE A/S

Inventor： Peter Bo OLSEN ,  Kim CHRISTENSEN ,  Per Aggerholm SØRENSEN ,  Mårten Nils Rickard GRANROTH ,  Russell WEBB ,  Rodney TAYLOR ,  Daniel HORN ,  Ralf BERGSTRÄSSER ,  Donnie LOUBIERE ,  Kay SCHMIDT

IPC: C09C1/50 ,  B01D53/50 ,  B01D53/86 ,  C09C1/48

Abstract: Disclosed herein are systems and methods for reducing the particulate matter content of an exhaust gas from a carbon black process.

公开(公告)号：US20200246743A1

公开(公告)日：2020-08-06

申请号：US16635065

申请日：2018-07-27

Applicant: HALDOR TOPSØE A/S

Inventor： Per Aggerholm SØRENSEN ,  Morten THELLEFSEN

IPC: B01D50/00 ,  B01D46/00 ,  B01D45/08 ,  B01D53/00

Abstract: The present disclosure relates to a process for removal of an aerosol, comprising the steps of directing a process gas comprising an aerosol to contact an inertial demister providing a first demisted process gas, and directing the first demisted process gas to contact a coalescing demister providing a second demisted process gas, characterized in said first inertial demister being more open than said coalescing demister, where more open is defined as having a higher void fraction or a lower density with the associated benefit of such a process providing an efficient removal of a large volume of liquid from the inertial demister, while avoiding flooding of the demister system. It further relates to a process plant for sulfuric acid production employing such a pair of demisters.

公开(公告)号：US20220177307A1

公开(公告)日：2022-06-09

申请号：US17594680

申请日：2020-04-30

Applicant: HALDOR TOPSØE A/S

Inventor： Morten THELLEFSEN ,  Per Aggerholm SØRENSEN ,  Martin MØLLERHØJ ,  Mads LYKKE

IPC: C01B17/04 ,  C01B17/02 ,  B01D53/86 ,  C01B17/80

Abstract: A process plant and a process for production of sulfur from a feedstock gas including from 15% to 100 vol % H2S and a stream of sulfuric acid, the process including a) providing a Claus reaction furnace feed stream with a substoichiometric amount of oxygen, b) directing to a Claus reaction furnace operating at elevated temperature, c) cooling to provide a cooled Claus converter feed gas, d) directing to contact a material catalytically active in the Claus reaction, e) withdrawing a Claus tail gas and elementary sulfur, f) directing a stream comprising said Claus tail gas to a Claus tail gas treatment, wherein sulfuric acid directed to said Claus reaction furnace is in the form of droplets with 90% of the mass of the droplets having a diameter below 500 μm, with the associated benefit of such a process efficiently converting all liquid H2SO4 to gaseous H2SO4 and further to SO2.

公开(公告)号：US20190047859A1

公开(公告)日：2019-02-14

申请号：US15765683

申请日：2016-10-24

Applicant: HALDOR TOPSØE A/S

Inventor： Mårten Nils Rickard GRANROTH ,  Per Aggerholm SØRENSEN ,  Kurt Agerbæk CHRISTENSEN

IPC: C01B17/765 ,  C01B17/79 ,  C01B17/80 ,  B01J27/055 ,  B01J21/08 ,  B01J21/12 ,  B01J23/22

Abstract: The invention is a method and a sulfuric acid plant design for reduction of start-up SO2, SO3 and H2SO4 emissions in sulfuric acid production, in which SO2 is converted to SO3 in n successive catalyst beds, where n is an integer >1. The final catalytic beds are used as absorbents for SO2 to SO3 during the start-up procedure, and one or more of the m beds downstream the first bed are purged, either separately or simultaneously, with hot gas, where m is an integer >1 and m