Abstract: The invention provides a process for removal of metal carbonyls from a synthesis gas stream comprising metal carbonyls, the process comprising the steps of: (a) adsorption of metal carbonyls by contacting the synthesis gas stream with solid adsorbent comprising activated carbon and/or hydrophobic zeolite to obtain solid adsorbent enriched in metal carbonyls and a synthesis gas stream depleted of metal carbonyls; (b) desorption of metal carbonyls by contacting the solid adsorbent enriched in metal carbonyls with CO-containing gas comprising at least 0.5 volume % CO to obtain regenerated adsorbent depleted of metal carbonyls and CO-containing gas enriched in metal carbonyls, wherein the temperature at which metal carbonyl desorption takes place is higher than the temperature at which metal carbonyl adsorption takes place.

Abstract: The invention provides a process for removal of hydrogen sulphide, iron pentacarbonyl and nickel tetracarbonyl from a feed synthesis gas stream, the process comprising the steps of: (a) removal of hydrogen sulphide and of iron pentacarbonyl by contacting the feed synthesis gas stream with an absorbing liquid comprising water, physical solvent and an amine, to obtain a synthesis gas stream depleted of hydrogen sulphide and depleted of iron pentacarbonyl; (b) adsorption of nickel tetracarbonyl by contacting the synthesis gas stream depleted of hydrogen sulphide and depleted of iron pentacarbonyl with solid adsorbent comprising activated carbon to obtain solid adsorbent enriched in nickel tetracarbonyl and a purified synthesis gas stream.

Abstract: The invention provides a process for the removal of COS and H2S from a synthesis gas stream comprising COS and H2S, the process having the steps of: removing H2S from a feed synthesis gas stream with a first solid adsorbent to obtain a first synthesis gas stream, converting COS in the first synthesis gas stream to H2S by contacting the first synthesis gas stream with a COS-hydrolysing catalyst in the presence of water in a hydrolysis zone to obtain a second synthesis gas stream depleted of COS and enriched in H2S; and removing H2S from the second synthesis gas stream by contacting the second synthesis gas stream with a second solid adsorbent in a H2S removal zone to obtain a third synthesis gas stream depleted of H2S and depleted of COS to very low levels.

Abstract: A hydrocarbon feed stream is separated in one or more separators to provide a hydrocarbon stream and at least one methane-lean stream comprising a first ethane-rich header feed stream. The hydrocarbon stream is heat exchanged with at least one refrigerant stream to provide at least one cooled hydrocarbon stream and at least one at least partially evapourated refrigerant stream. The first ethane-rich header feed stream is passed to at least one fuel gas header, from which header fuel gas is removed as at least one fuel gas stream.

Abstract: The invention provides a process for producing purified natural gas, the process comprising the steps of: expanding a pressurised natural gas stream comprising at least 4 ppmv of mercaptans and supplying it to a first separation column, in which the natural gas stream is separated into a gaseous overhead stream enriched in methane and a first fraction enriched in mercaptans; withdrawing the gaseous overhead stream enriched in methane from the separation column to obtain the purified natural gas; with drawing the fraction enriched in mercaptans from the separation column; removing mercaptans from the first fraction enriched in mercaptans.

Abstract: The invention provides a process for removal of metal carbonyls from a synthesis gas stream comprising metal carbonyls, the process comprising the steps of: (a) adsorption of metal carbonyls by contacting the synthesis gas stream with solid adsorbent comprising activated carbon and/or hydrophobic zeolite to obtain solid adsorbent enriched in metal carbonyls and a synthesis gas stream depleted of metal carbonyls; (b) desorption of metal carbonyls by contacting the solid adsorbent enriched in metal carbonyls with CO-containing gas comprising at least 0.5 volume % CO to obtain regenerated adsorbent depleted of metal carbonyls and CO-containing gas enriched in metal carbonyls, wherein the temperature at which metal carbonyl desorption takes place is higher than the temperature at which metal carbonyl adsorption takes place.

Abstract: The invention provides a process for removal of hydrogen sulphide, iron pentacarbonyl and nickel tetracarbonyl from a feed synthesis gas stream, the process comprising the steps of: (a) removal of hydrogen sulphide and of iron pentacarbonyl by contacting the feed synthesis gas stream with an absorbing liquid comprising water, physical solvent and an amine, to obtain a synthesis gas stream depleted of hydrogen sulphide and depleted of iron pentacarbonyl; (b) adsorption of nickel tetracarbonyl by contacting the synthesis gas stream depleted of hydrogen sulphide and depleted of iron pentacarbonyl with solid adsorbent comprising activated carbon to obtain solid adsorbent enriched in nickel tetracarbonyl and a purified synthesis gas stream.

Abstract: The invention provides a process for the removal of COS from a first synthesis gas stream comprising COS and H2S, the process having the steps of: (a) converting COS in the first synthesis gas stream to H2S by contacting the first synthesis gas stream with a COS-hydrolysing catalyst in the presence of water in a hydrolysis zone to obtain a second synthesis gas stream depleted of COS and enriched in H2S; (b) removing H2S from the second synthesis gas stream by contacting the second synthesis gas stream with a solid adsorbent in a H2S removal zone to obtain a third synthesis gas stream depleted of H2S and depleted of COS