Haldor Topse A/s

Topsoe A/s

Haldor Topsoe A/s

Annette E Krøll Jensen

Christian Henrik Speth

Niels Christian Schjødt

Per Juul Dahl

Pat A Han

Thomas Rostrup-Nielsen

Marcus Symreng

Lari Bjerg Knudsen

Niels Christian SCHJØDT

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

Method for the preparation of ammonia synthesis gas

The present invention relates to a revamp method for increasing the front-end capacity of a plant comprising

Low steam/carbon revamp of a plant comprising a steam reforming section and a water-gas shift section

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.

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.

Method and catalysts for the production of ammonia synthesis gas

A process for producing an ammonia synthesis gas, said process comprising the steps of: &#x2014;Reforming a hydrocarbon feed in a reforming step thereby obtaining a synthesis gas comprising CH, CO, CO, Hand HO, &#x2014;Shifting the synthesis gas in one in or more shift steps in series, &#x2014;Optionally wash the synthesis gas leaving the shift section with water, &#x2014;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. &#x2014;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 &#x2014;The steam/carbon ratio in the reforming step and the shift step is less than 2.6.

Ammonia process using advanced shift process

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 CH, CO, CO, Hand HO; 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.

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Fredensborg, Denmark

Annette E Krøll Jensen