Abstract: Method for the preparation of ammonia synthesis gas based on a combination of autothermal reforming and electrolysis of water.

Abstract: A method for improving efficiency of an existing ammonia synthesis gas plant or a new ammonia synthesis gas plant by establishing a combination of secondary steam reforming using oxygen from electrolysis of water for the production of ammonia synthesis gas.

Abstract: The present invention relates to a revamp method for increasing the front-end capacity of a plant comprising a reforming section, wherein a feed is reformed in at least one reforming step to a reformed stream comprising CH4, CO, CO2, H2 and H2O a shift section wherein the reformed stream is shifted in a shift reaction in at least a high temperature shift step, said method comprising the steps of In the High temperature shift step exchanging an original Fe-based catalyst with a non-Fe-based catalyst Increasing the feed flow to the reforming section, and The HTS step is carried out at a reduced steam/dry-gas ratio (S/DG) compared to an original S/DG in the original HTS step with the original Fe-based catalyst.

Abstract: Method for the preparation of ammonia synthesis gas by a combination of ATR or secondary reforming process using oxygen from an air separation unit and electrolysis of water for the production of ammonia synthesis gas.

Abstract: In a process for the production of ammonia synthesis gas from a hydrocarbon-containing feedstock, comprising steam reforming of the feedstock and treatment of the synthesis gas obtained, the shift of the synthesis gas comprises two shift steps, both including stable catalysts, whereby the formation of hazardous by-products is avoided or at least reduced to an acceptable low level. The two shift steps can both be HTS, or they can be one HTS and one LTS or one HTS and one MTS. The catalyst used in the HTS and the LTS steps is based on zinc oxide and zinc aluminum spinel, and the catalyst used in the MTS and the LTS steps can be based on copper.

Abstract: A process for producing an ammonia synthesis gas, said process comprising the steps of: —Reforming a hydrocarbon feed in a reforming step thereby obtaining a synthesis gas comprising CH4, CO, CO2, H2 and H2O, —Shifting the synthesis gas in one in or more shift steps in series, —Optionally wash the synthesis gas leaving the shift section with water, —Sending the process condensate originating from cooling and washing the synthesis gas leaving the shift section to a process condensate stripper wherein the dissolved shift byproducts and dissolved gases are stripped out of the process condensate using steam resulting in a steam stream containing more than 99% of the dissolved methanol in process condensate. —Adding all or part of said steam stream from the process condensate stripper to the synthesis gas downstream the reforming step, prior to the last shift step, wherein —The steam/carbon ratio in the reforming step and the shift step is less than 2.6.

Abstract: The present invention relates to a revamp method for increasing the front-end capacity of a plant comprising a reforming section, wherein a feed is reformed in at least one reforming step to a reformed stream comprising CH4, CO, CO2, H2 and H2O a shift section wherein the reformed stream is shifted in a shift reaction in at least a high temperature shift step, said method comprising the steps of In the High temperature shift step exchanging an original Fe-based catalyst with a non-Fe-based catalyst Increasing the feed flow to the reforming section, and The HTS step is carried out at a reduced steam/dry-gas ratio (S/DG) compared to an original S/DG in the original HTS step with the original Fe-based catalyst.

Abstract: Method for the preparation of ammonia synthesis gas by a combination of ATR or secondary reforming process using oxygen from an air separation unit and electrolysis of water for the production of ammonia synthesis gas.

Abstract: A process for producing an ammonia synthesis gas, said process including the steps of: reforming a hydrocarbon feed in a reforming step thereby obtaining a synthesis gas comprising CH4, CO, CO2, H2 and H2O; and shifting said synthesis gas in a high temperature shift step over a promoted zinc-aluminum oxide based high temperature shift catalyst, wherein the steam/carbon ratio in the reforming step is less than 2.6.

Abstract: In a process for the production of ammonia synthesis gas from a hydrocarbon-containing feedstock, comprising steam reforming of the feedstock and treatment of the synthesis gas obtained, the shift of the synthesis gas comprises two shift steps, both including stable catalysts, whereby the formation of hazardous by-products is avoided or at least reduced to an acceptable low level. The two shift steps can both be HTS, or they can be one HTS and one LTS or one HTS and one MTS. The catalyst used in the HTS and the LTS steps is based on zinc oxide and zinc aluminum spinel, and the catalyst used in the MTS and the LTS steps can be based on copper.

Abstract: Method for the preparation of ammonia synthesis gas based on a combination of autothermal reforming and electrolysis of water.

Abstract: Method for improving efficiency of an existing ammonia synthesis gas plant or a new ammonia synthesis gas plant by establishing a combination of secondary steam reforming using oxygen from electrolysis of water for the production of ammonia synthesis gas.

Abstract: A process for producing an ammonia synthesis gas, said process comprising the steps of: —Reforming a hydrocarbon feed in a reforming step thereby obtaining a synthesis gas comprising CH4, CO, CO2, H2 and H2O, —Shifting the synthesis gas in one in or more shift steps in series, —Optionally wash the synthesis gas leaving the shift section with water, —Sending the process condensate originating from cooling and washing the synthesis gas leaving the shift section to a process condensate stripper wherein the dissolved shift byproducts and dissolved gases are stripped out of the process condensate using steam resulting in a steam stream containing more than 99% of the dissolved methanol in process condensate. —Adding all or part of said steam stream from the process condensate stripper to the synthesis gas downstream the reforming step, prior to the last shift step, wherein —The steam/carbon ratio in the reforming step and the shift step is less than 2.6.

Abstract: In a method for the reduction of methanol emission from an ammonia plant, a chilled methanol-containing feed gas is fed to a methanol absorber, carbon dioxide is separated from the gas phase leaving the methanol absorber, the methanol-containing gas is fed to a final separator, and the chilled, methanol-free process condensate from the final separator is used to wash out the methanol in a scrubbing column. By cooling the streams to the column and inserting a number of individual wash trays in the column, a practically quantitative removal of methanol is possible.

Abstract: A process for producing an ammonia synthesis gas, said process including the steps of: reforming a hydrocarbon feed in a reforming step thereby obtaining a synthesis gas comprising CH4, CO, CO2 , H2 and H2O; and shifting said synthesis gas in a high temperature shift step over a promoted zinc-aluminum oxide based high temperature shift catalyst, wherein the steam/carbon ratio in the reforming step is less than 2.6.

Abstract: In a process for the production of ammonia in at least two reaction systems, in which ammonia is produced from a portion of the synthesis gas in each of the systems with a part-stream being withdrawn, the make-up gas is essentially inert-free, the downstream system is at the same pressure or at a higher pressure than the upstream system and the make-up gas is sent once through a make-up gas (MUG) converter unit, the residual synthesis gas coming from the MUG converter unit is optionally pressurized to a higher pressure before being sent to an inert-free synthesis loop. This way, an economically attractive production of ammonia is feasible with synthesis gases not containing inerts.