公开(公告)号：US11511991B2

公开(公告)日：2022-11-29

申请号：US16624387

申请日：2018-08-21

Applicant: Haldor Topsøe A/S

Inventor： Christian Henrik Speth ,  Tommy Lykke Wind ,  Per Juul Dahl

IPC: C01B3/04 ,  B01J8/02 ,  B01J12/00 ,  B01J23/755 ,  C01B21/26

Abstract: Process for the production of a product gas containing nitrogen and hydrogen from ammonia comprising the steps of non-catalytic partial oxidation of ammonia with an oxygen containing gas to a process gas containing nitrogen, water, amounts of nitrogen oxides and residual amounts of ammonia; cracking of at least a part of the residual amounts of ammonia to hydrogen and nitrogen in the process gas by contact with a nickel containing catalyst and simultaneously reducing the amounts of nitrogen oxides to nitrogen and water by reaction with a part of the hydrogen formed during cracking of the process gas by contact of the process gas with the nickel containing catalyst; and withdrawing the hydrogen and nitrogen containing product gas.

公开(公告)号：US11407702B2

公开(公告)日：2022-08-09

申请号：US17261235

申请日：2019-07-11

Applicant: HALDOR TOPSØE A/S

Inventor： Emil Andreas Tjärnehov ,  Per Juul Dahl

IPC: C07C29/152 ,  C07C29/151

Abstract: A method for producing methanol comprises the steps of passing a feed stream of methanol synthesis pas through a main methanol reactor containing a methanol synthesis catalyst, to form a mixed gas containing methanol, cooling the mixed gas containing methanol, separating methanol from the mixed pas and heating the mixed gas. The stream of heated mixed gas is passed through an additional methanol reactor containing a methanol synthesis catalyst, and the effluent from the additional methanol reactor is mixed with the feed stream of methanol synthesis gas and passed through the main methanol reactor.

公开(公告)号：US11161084B2

公开(公告)日：2021-11-02

申请号：US16763862

申请日：2018-12-19

Applicant: Haldor Topsøe A/S

Inventor： Christian Henrik Speth ,  Per Juul Dahl

IPC: B01J8/04 ,  B01J8/00 ,  C01C1/04 ,  C01B3/16

Abstract: In a cooled axial flow converter, in which process gas passes from an outer annulus via a catalyst bed, wherein the process gas is converted to a product, to an inner centre tube, the catalyst bed comprises at least one module comprising at least one catalyst layer. Feed means are arranged to provide a flow of process gas from the outer annulus to an inlet part of one or more modules, and collector means are arranged to provide a flow of product stream of converted process gas, which has passed axially down the catalyst bed of one or more of the modules to the centre tube. At least one of the one or more modules comprises one or more cooling plates arranged to be cooled by a cooling fluid.

公开(公告)号：US20210170353A1

公开(公告)日：2021-06-10

申请号：US16763862

申请日：2018-12-19

Applicant: Haldor Topsøe A/S

Inventor： Christian Henrik Speth ,  Per Juul Dahl

IPC: B01J8/04 ,  C01C1/04 ,  C01B3/16

Abstract: In a cooled axial flow converter, in which process gas passes from an outer annulus via a catalyst bed, wherein the process gas is converted to a product, to an inner centre tube, the catalyst bed comprises at least one module comprising at least one catalyst layer. Feed means are arranged to provide a flow of process gas from the outer annulus to an inlet part of one or more modules, and collector means are arranged to provide a flow of product stream of converted process gas, which has passed axially down the catalyst bed of one or more of the modules to the centre tube. At least one of the one or more modules comprises one or more cooling plates arranged to be cooled by a cooling fluid.

公开(公告)号：US11027984B2

公开(公告)日：2021-06-08

申请号：US16482864

申请日：2018-03-07

Applicant: Haldor Topsøe A/S

Inventor： Christian Henrik Speth ,  Per Juul Dahl ,  Annette E. Kroll Jensen ,  Niels Christian Schjødt ,  Marcus Symreng

IPC: C01C1/04 ,  C01B3/02 ,  B01D19/00 ,  B01J23/80 ,  C01B3/48 ,  C01B3/52 ,  C07C273/10

Abstract: A process for producing urea with controlled excess of CO2 and/or NH3. The process includes the steps of: reforming the hydrocarbon feed gas, thereby obtaining a synthesis gas comprising CH4, CO, CO2, H2 and H2O, shifting the synthesis gas, removing CO2 from the synthesis gas, removing residual H2O and/or CO2 from the synthesis gas, removing CH4, CO, Ar and/or He, and adding stoichiometric nitrogen to produce NH3 to the synthesis gas, synthesizing NH3 to obtain a NH3 product, and adding at least part of the product CO2 and at least part of the NH3 product to a urea synthesis step to make a urea product. The amount of excess CO2 and/or NH3 is controlled by adjusting the steam/carbon in the reforming step and/or the H2O addition upstream the shift step and/or adjusting the inlet temperature to at least one or more shift steps.

公开(公告)号：US20200231456A1

公开(公告)日：2020-07-23

申请号：US16482864

申请日：2018-03-07

Applicant: Haldor Topsøe A/S

Inventor： Christian Henrik Speth ,  Per Juul Dahl ,  Annette E. Kroll Jensen ,  Niels Christian Schjødt ,  Marcus Symreng

IPC: C01C1/04 ,  C01B3/02 ,  C01B3/48 ,  C01B3/52 ,  B01D19/00 ,  B01J23/80

Abstract: A process for producing UREA, said process comprising the steps of:—purification of a hydrocarbon feed gas removing Sulphur and/or chloride components if present, —reforming the hydrocarbon feed gas in a reforming step where the steam/carbon ratio is less than 2.6 thereby obtaining a synthesis gas comprising CH4, CO, CO2, H2 and H2O, —optionally adding H2O to the synthesis gas from the reforming step maintaining an overall steam/carbon less than 2.6, —shifting the synthesis gas in a shift section comprising one or more shift steps preferably in series, —optionally washing the synthesis gas leaving the shift section with water, —removing CO2 from the synthesis gas from the shift section in a CO2 removal step to obtain a synthesis gas with less than 500 ppm CO2, preferably less than 20 ppm CO2 and a CO2 product gas, —removing residual H2O and/or CO2 from the synthesis gas preferably in an absorbent step, —removing CH4, CO, Ar and/or He preferably in a nitrogen wash unit and adding stoichiometric nitrogen to produce NH3 to the synthesis gas, —synthesizing NH3 to obtain a NH3 product, —adding at least part of the product CO2 and at least part of the NH3 product to a UREA synthesis step to make a UREA product, Wherein the amount of excess CO2 and/or NH3 is controlled by adjusting the steam/carbon in the reforming step and/or the H2O addition upstream the shift step and/or adjusting the inlet temperature to at least one of the one or more shift steps.

公开(公告)号：US10308576B2

公开(公告)日：2019-06-04

申请号：US15569527

申请日：2016-05-10

Applicant: Haldor Topsøe A/S

Inventor： Per Juul Dahl ,  Hassan Modarresi ,  Max Thorhauge

IPC: C07C29/151 ,  C07C31/04 ,  B01D3/06 ,  B01L3/06 ,  C01B3/12

Abstract: In a process for methanol production from synthesis gas, which comprises the steps of providing a make-up gas containing hydrogen and carbon monoxide, in which the content of carbon dioxide is less than 0.1 mole %, mixing the make-up gas with a hydrogen-rich recycle gas and passing the gas mixture to a methanol synthesis reactor, optionally via a sulfur guard, and subjecting the effluent from the synthesis reactor to a separation step, thereby providing crude methanol and the hydrogen-rich recycle gas, the customary addition of carbon dioxide to the make-up gas is replaced by addition of water in an amount of 0.1 to 5 mole %. This way, a CO2 compressor is saved, and the amount of poisonous sulfur in the make-up gas is markedly reduced.

公开(公告)号：US20180305281A1

公开(公告)日：2018-10-25

申请号：US15569527

申请日：2016-05-10

Applicant: Haldor Topsøe A/S

Inventor： Per Juul Dahl ,  Hassan Modarresi ,  Max Thorhauge

IPC: C07C29/151 ,  C07C31/04 ,  B01D3/06

CPC classification number: C07C29/1518 ,  B01D3/06 ,  B01D2257/70 ,  C01B3/12 ,  C01B2203/061 ,  C01B2203/1223 ,  C07C31/04

Abstract: In a process for methanol production from synthesis gas, which comprises the steps of providing a make-up gas containing hydrogen and carbon monoxide, in which the content of carbon dioxide is less than 0.1 mole %, mixing the make-up gas with a hydrogen-rich recycle gas and passing the gas mixture to a methanol synthesis reactor, optionally via a sulfur guard, and subjecting the effluent from the synthesis reactor to a separation step, thereby providing crude methanol and the hydrogen-rich recycle gas, the customary addition of carbon dioxide to the make-up gas is replaced by addition of water in an amount of 0.1 to 5 mole %. This way, a CO2 compressor is saved, and the amount of poisonous sulfur in the make-up gas is markedly reduced.