摘要:
The present invention provides a method and system for separating CO2 from a gas stream containing CO2. A gas stream having an initial pressure is compressed and subsequently cooled. The compressed and cooled gas stream has an increased pressure and reduced temperature at which the CO2 in the gas stream is at least partially converted to the liquid phase. The liquid phase is separated from the compressed and cooled gas stream, to provide a liquid phase stream and a gas phase stream, wherein the output pressure of the liquid phase stream is higher than the initial pressure of the gas stream.
摘要:
The present invention concerns a process for removing acidic contaminants and C2+-hydrocarbons from a feed gas stream (1) containing methane and acidic contaminants and C2+-hydrocarbons, the process comprising cooling (2) the feed gas stream to a temperature at which solid acidic contaminants are formed and a liquid comprising C2+-hydrocarbons and acidic contaminants as well as a methane enriched gaseous phase, separating (3) a gaseous stream (5) from the solids and liquid, introducing solids and liquid in the upper part of a separation/washing zone (4), the separation/washing zone comprising a downwardly moving bed of solids and removing solids at the lower end of the separation/washing zone, separating liquid from the solids through one or more openings (9) at a position between the upper part and the lower end of the separation/washing zone, and introducing at a position below the one or more openings an upwardly moving washing liquid.
摘要:
The invention provides a process for removing gaseous contaminants from a feed gas stream which comprises methane and gaseous contaminants, the process comprising: 1) providing the feed gas stream (1); 2) cooling the feed gas stream to a temperature at which liquid phase contaminant is formed as well as a methane enriched gaseous phase,—3) separating the two phases obtained in step 2) by means of a gas/liquid separator (4); and 4) subjecting the methane enriched gaseous phase obtained in step 3) to a distillation treatment in a distillation section (10) thereby obtaining a bottom stream (12) rich in liquid phase contaminant and lean in methane, and a top stream (11) rich in methane and lean in gaseous contaminant. The invention further concerns a device for carrying out the present process, the purified gas stream, and a process for liquefying a feed gas stream.
摘要:
Acidic contaminants are removed from a natural gas stream comprising hydrocarbons and acidic contaminants in a process comprising the steps of: (a) expanding the natural gas stream, thereby cooling the natural gas stream and allowing at least part of the acidic contaminants to liquefy with the proviso that no solid acidic contaminants are formed, thereby obtaining a cooled natural gas stream that contains liquefied acidic contaminants; (b) separating at least part of the liquefied acidic contaminants from the cooled natural gas stream in a separator comprising centrifugal separation means, to obtain a contaminants-depleted natural gas stream; and (c) treating the contaminants-depleted natural gas stream with a liquid physical solvent to obtain a sweet natural gas stream and a liquid solution of acidic contaminants.
摘要:
A separation device for removing at least part of a liquid from a mixture which comprises a gas and the liquid in the form of droplets, comprises: a) a housing comprising first, second and third separation sections for separating liquid from the mixture, wherein the second section is arranged below the first section and above the third section, the respective sections are in communication with each other, and the second section comprises a rotating coalescer element; b) tangentially arranged means to introduce the mixture into the first section; c) means to remove liquid from the first section; d) means to remove liquid from the third section; and e) means to remove a gaseous stream, lean in liquid, from the third section. A separation process for removing at least part of a liquid from a mixture comprising the liquid in the form of droplets using the separation device.
摘要:
A process for producing a contaminant-depleted gas stream from a contaminated hydrocarbon feed gas stream comprises: (a) expanding the contaminated to obtain an expanded stream; (b) allowing at least part of the contaminants in the expanded stream to liquefy to form a dispersion of a contaminants enriched liquid comprising hydrocarbons and a gaseous phase with lowered contaminant content; (c) separating at least part of the contaminants enriched liquid from the gaseous phase in a first separator, thereby obtaining the contaminant-depleted gas stream and a liquid stream comprising contaminants and hydrocarbons; (d) separating hydrocarbons from the liquid stream in a second separator, thereby obtaining an overhead stream comprising hydrocarbons and a bottom stream depleted in hydrocarbons; and (e) leading the overhead stream to a point prior to step (c); further comprising the step of increasing the pressure of the liquid stream prior to step (d).
摘要:
The invention provides a process for removing gaseous contaminants from a feed gas stream which comprises methane and gaseous contaminants, the process comprising: 1) providing the feed gas stream; 2) cooling the feed gas stream to a first temperature at which liquid phase contaminant is formed as well as a methane enriched gaseous phase; 3) separating the two phases obtained in step 2) by means of a first gas/liquid separator; 4) cooling the methane enriched gaseous phase obtained in step 3) at least party by means of an external refrigerant to a second temperature at which liquid phase contaminant is formed as well as a methane enriched gaseous phase; and 5) separating the two phases obtained in step 4) by means of a second gas/liquid separator. The invention further concerns a device for carrying out the present process, the purified gas stream, and a process for liquefying a feed gas stream.
摘要:
Apparatus for the separation of gas and solid and/or liquid contaminants, comprising a housing with a gas inlet for contaminated gas at one end of the vessel, a separating body, a gas outlet for purified gas at the opposite end of the housing and a contaminants outlet downstream of the separating body, wherein the separating body comprises a plurality of ducts over a part of the length of the axis of the housing, which ducts have been mounted on a central axis of rotation, in which apparatus the separating body has been composed of a plurality of perforated discs wherein the perforations of the discs form the ducts.
摘要:
A process for removing gaseous contaminants from a feed gas stream that comprises a gaseous product and gaseous contaminants, comprising: providing the feed gas stream, cooling the feed gas stream to a temperature at which liquid phase contaminant is formed as well as a gaseous phase rich in gaseous product, separating the two phases by means of a gas/liquid separator, and introducing the gaseous phase rich in gaseous product into a cryogenic separation device that comprises a freezing zone and a distillation zone positioned below the freezing zone, and removing from the cryogenic separation device a bottom stream rich in liquid phase contaminant and lean in gaseous product, and a top stream rich in gaseous product and lean in gaseous contaminant. The invention further includes a device for carrying out the present process, the purified gas stream, and a process for liquefying a feed gas stream.
摘要:
The invention provides a process for removing one or more gaseous contaminants from a contaminated feed gas stream, the process comprising 1) providing the contaminated feed gas stream, 2) cooling the contaminated feed gas stream to a temperature at which liquid contaminant is formed as well as a contaminant depleted gaseous phase, and 3) separating the two phases by introducing them into a gas/liquid separator vessel, comprising a gas/liquid inlet at an intermediate level, a liquid outlet arranged below the gas/liquid inlet and a gas outlet arranged above the gas/liquid inlet, in which vessel a normally horizontal coalescer is present above the gas/liquid inlet and over the whole cross-section of the vessel and in which vessel a centrifugal liquid separator is arranged above the coalescer and over the whole cross-section of the vessel, the liquid separator comprising one or more swirl tubes. The contaminated gas stream can be a methane-containing gas stream, especially a natural gas stream, or a gas stream from a gasification or combustion process. The invention further provides a device for carrying out the process as well as the purified gas stream.