公开(公告)号：US20220177306A1

公开(公告)日：2022-06-09

申请号：US17606557

申请日：2020-04-29

Applicant: HALDOR TOPSØE A/S

Inventor： Morten THELLEFSEN ,  Mads LYKKE ,  Martin MØLLERHØJ

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

Abstract: A revamp process for modifying a sulfur abatement plant including a Claus process plant, the Claus process plant including a Claus reaction furnace and one or more Claus conversion stages, each Claus conversion stage including a conversion reactor and a means for elemental sulfur condensation, and a means of Claus tail gas oxidation configured for receiving a Claus tail gas from said Claus process plant and configured for providing an oxidized Claus tail gas, the process revamp including: a) providing a sulfuric acid producing tail gas treatment plant producing sulfuric acid, and b) providing a means for transferring an amount or all of the sulfuric acid produced in said sulfuric acid producing tail gas treatment plant to said Claus reaction furnace, wherein the moles of sulfur in the transferred sulfuric acid relative to the moles of elemental sulfur withdrawn from the Claus process plant is from 3% to 25%.

公开(公告)号：US20220219983A1

公开(公告)日：2022-07-14

申请号：US17613112

申请日：2020-07-10

Applicant: HALDOR TOPSØE A/S

Inventor： Martin MØLLERHØJ ,  Morten THELLEFSEN

IPC: C01B17/88 ,  B01D5/00 ,  B01D3/00 ,  B01D1/14 ,  B01D1/12

Abstract: A sulfuric acid recirculation loop and a standalone sulfuric acid concentrator including: a concentrator column, an air lift pump having a liquid inlet fed with concentrated sulfuric acid from the outlet of a sulfuric acid reservoir downstream the concentrator column, a gas inlet fed with a carrier fluid having a lower density than the concentrated sulfuric acid, and an outlet, wherein the sulfuric acid reservoir is located below the concentrator column and above the carrier fluid inlet of the air lift pump, a downcomer pipe leading down from the sulfuric acid reservoir to the liquid inlet of the air lift pump, and a riser pipe leading up from the carrier fluid inlet on the air lift pump to an inlet pipe for the concentrator column, the inlet pipe being configured for allowing a liquid flow from the inlet to the outlet.

公开(公告)号：US20200149735A1

公开(公告)日：2020-05-14

申请号：US16620128

申请日：2018-06-26

Applicant: HALDOR TOPSØE A/S

Inventor： Mads LYKKE ,  Martin MØLLERHØJ

IPC: F22B1/18 ,  C01B17/80 ,  C01B17/775 ,  C01B17/765 ,  B01J8/04 ,  B01D53/86

Abstract: In a method for cooling of process gas between catalytic layers or beds in a sulfuric acid plant, in which sulfuric acid is produced from feed gases containing sulfurous components like SO2, H2S, CS2 and COS or liquid feeds like molten sulfur or spent sulfuric acid, one or more boilers, especially water tube boilers, are used instead of conventional steam superheaters to cool the process gas between the catalytic beds in the SO2 converter of the plant. Thereby a less complicated and more cost efficient heat exchanger layout is obtained.

公开(公告)号：US20200062594A1

公开(公告)日：2020-02-27

申请号：US16467687

申请日：2017-12-08

Applicant: HALDOR TOPSØE A/S

Inventor： Martin MØLLERHØJ

IPC: C01B17/88 ,  B01D3/16 ,  B01D1/14 ,  B01D3/34

Abstract: In a process for increasing the sulfuric acid concentration of 90-98 wt % sulfuric acid, comprising stripping water from the sulfuric acid by contacting it with hot stripping media in a sulfuric acid concentrator column to increase the concentration of the acid leaving the column, the concentration of the acid is increased further by recycling a fraction of the acid, which is leaving the column, through an acid recirculation loop back to the inlet of the column, and the acid is optionally heated during its passage through the acid recirculation loop.

公开(公告)号：US20220234891A1

公开(公告)日：2022-07-28

申请号：US17606607

申请日：2020-04-29

Applicant: HALDOR TOPSØE A/S

Inventor： Morten THELLEFSEN ,  Martin MØLLERHØJ ,  Mads LYKKE

IPC: C01B17/04 ,  C01B17/76 ,  C01B17/80 ,  B01D53/14 ,  B01D53/86 ,  F23G7/06

Abstract: A process and a process plant for production of elemental sulfur from a feedstock gas including from 15 vol % 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 s to a reaction furnace operating at elevated temperature, c) cooling, d) directing to contact a material catalytically active in the Claus reaction, e) withdrawing a Claus tail gas and elemental sulfur, f) directing to a means for sulfur oxidation, g) directing to contact a material catalytically active in SO2 oxidation to SO3, h) converting to concentrated sulfuric acid, i) recycling to the Claus reaction furnace, wherein an amount of combustibles, in the Claus tail gas, is oxidized in the presence of a material catalytically active in sulfur oxidation, at an inlet temperature below 400° C.

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.