Nitrogen process for production of ammonia and liquid hydrogen

A method of co-producing liquid hydrogen and ammonia, comprising a hydrogen generator, a nitrogen generator, and a hydrogen liquefaction unit, the method comprising:

• pressurizing a hydrogen stream from the hydrogen generator in a high-pressure hydrogen compressor, dividing the pressurized hydrogen stream into at least a first portion and a second portion, wherein the first portion comprises at least part of the flow of a first refrigeration cycle in the hydrogen liquefaction unit, and the second part comprises at least part of the feed to an ammonia plant, and
• pressurizing a nitrogen stream from the nitrogen generator in a high-pressure nitrogen compressor, dividing the pressurized nitrogen stream into at least a first part and a second part, wherein the first part comprises at least part of the flow of a second refrigeration cycle in the hydrogen liquefaction unit, and the second part comprises at least part of the feed to the ammonia plant, and
• an ammonia reactor,
• wherein the ammonia reactor produces a first volume flowrate, the hydrogen liquefaction unit produces a second volume flowrate, and the ratio of the first volume flowrate to the second volume flowrate is between 4.0 and 15.0, and
• wherein the hydrogen generator comprises a steam methane reformer, wherein the steam methane reformer comprises a process feed stream, wherein the nitrogen generator comprises a distillation column producing the nitrogen stream and an oxygen enriched stream, and wherein at least a portion of the oxygen enriched stream is combined with the process feed stream of the steam methane reformer.

A method of co-producing liquid hydrogen and ammonia, comprising a hydrogen generator, a nitrogen generator, and a hydrogen liquefaction unit, the method comprising:

• pressurizing a hydrogen stream from the hydrogen generator in a high-pressure hydrogen compressor, dividing the pressurized hydrogen stream into at least a first portion and a second portion, wherein the first portion comprises at least part of the flow of a first refrigeration cycle in the hydrogen liquefaction unit, and the second part comprises at least part of the feed to an ammonia plant, and
• pressurizing a nitrogen stream from the nitrogen generator in a high-pressure nitrogen compressor, dividing the pressurized nitrogen stream into at least a first part and a second part, wherein the first part comprises at least part of the flow of a second refrigeration cycle in the hydrogen liquefaction unit, and the second part comprises at least part of the feed to the ammonia plant, and
• an ammonia reactor,
• wherein the ammonia reactor produces a first volume flowrate, the hydrogen liquefaction unit produces a second volume flowrate, and the ratio of the first volume flowrate to the second volume flowrate is between 4.0 and 15.0, and
• wherein the hydrogen generator comprises a steam methane reformer, wherein the steam methane reformer comprises a fuel feed stream, wherein the nitrogen generator comprises a distillation column producing the nitrogen stream and an oxygen enriched stream, and wherein at least a portion of the oxygen enriched stream is combined with the fuel feed stream of the steam methane reformer.