Integrated gas refinery

A process for the simultaneous production of a hydrogen stream A useful for the production of product A;

• a hydrogen rich synthesis gas stream B useful for the production of product B;
• a hydrogen depleted synthesis gas stream C useful for the production of product C;
• and optionally, a carbon monoxide stream D useful for the production of product D;
• from a single synthesis gas stream X characterised in that:
• a) the single synthesis gas stream X has a synthesis gas molar ratio calculated as H2/CO optimized for the production of product C,
• b) the single synthesis gas stream X is separated into a synthesis gas stream X1, a synthesis gas stream X2, a synthesis gas stream X3 and optionally a synthesis gas stream X4,
• c) the synthesis gas stream X1 is subjected to a water gas shift reaction step to convert the CO from the synthesis gas stream X1 and water into CO2 and H2,
• d) the CO2 and H2 from step c) are respectively separated and recovered,
• e) a fraction of the H2 from step d) is used as the hydrogen stream A,
• f) a fraction of the H2 from step d) is combined with synthesis gas stream X2 which is then used as the hydrogen rich synthesis gas stream B,
• g) the synthesis gas stream X3 is used as the hydrogen depleted synthesis gas stream C, and optionally
• h) the synthesis gas stream X4 is treated to remove the carbon dioxide and hydrogen thereof;
• and the resulting carbon monoxide stream is used as a carbon monoxide source of stream D.