Method for separating components of a gas

A method for separating components of a gas comprising:

• cooling a feed gas stream in a first vessel, wherein the feed gas stream comprises methane, carbon dioxide, and a secondary component, such that a first portion of the secondary component condenses, desublimates, or a combination thereof to form a primary stream, resulting in a first depleted gas stream leaving the first vessel;
• cooling the first depleted gas stream in a condensing exchanger such that a first portion of the methane condenses as a first liquid methane stream, resulting in a second depleted gas stream leaving the condensing exchanger;
• cooling the second depleted gas stream in the second vessel such that a first portion of the carbon dioxide desublimates, producing a solid product stream and resulting in a third depleted gas stream leaving the second vessel;
• wherein cooling the feed gas stream in the first vessel condenses a second portion of the carbon dioxide into the primary liquid stream;
• and
• further comprising separating the carbon dioxide from the primary liquid stream.

A method for separating components of a gas comprising:

• cooling a feed gas stream in a first vessel, wherein the feed gas stream comprises methane, carbon dioxide, and a secondary component, such that a first portion of the secondary component condenses, desublimates, or a combination thereof to form a primary stream, resulting in a first depleted gas stream leaving the first vessel;
• cooling the first depleted gas stream in a condensing exchanger such that a first portion of the methane condenses as a first liquid methane stream, resulting in a second depleted gas stream leaving the condensing exchanger;
• cooling the second depleted gas stream in the second vessel such that a first portion of the carbon dioxide desublimates, producing a solid product stream and resulting in a third depleted gas stream leaving the second vessel;
• wherein the secondary component comprises water, NGLs, or a combination thereof;
• wherein the secondary component further comprises a compound selected from a group consisting of nitrogen, argon, hydrogen sulfide, mercaptans, hydrogen, and combinations thereof;
• and
• wherein the secondary component comprises water and NGLs, the method further comprising separating the NGLs and the water in a liquid-liquid separator, wherein the liquid-liquid separator comprises a decanter, a settling tank, or a combination thereof.