Abstract: A process for removal of unwanted components from a feed gas mixture, wherein a temperature swing adsorption unit comprising at least two adsorption vessels is used, the method comprising cyclically operating the temperature swing adsorption unit in successive operation modes in each of which a different one of the at least two adsorption vessels is operated in an adsorption mode while a further one of the at least two adsorption vessels previously operated in the adsorption mode is operated in a regeneration mode, the adsorption mode comprising forming an adsorption gas stream using a part of the feed gas mixture and passing the adsorption gas stream through the adsorption vessel operated in the adsorption mode, and the regeneration mode comprising passing a regeneration gas stream through the adsorption vessel operated in the regeneration mode, thereby forming the purified gas mixture.

Abstract: A method for treating, using temperature swing adsorption, a hydrocarbon mixture containing hydrocarbons with less than five carbon atoms and heavier hydrocarbons including hydrocarbons with five and/or six carbon atoms and hydrocarbons with at least seven carbon atoms is provided, the method comprising forming a process stream from at least a part of said hydrocarbon mixture and passing said process stream through an adsorption vessel, the adsorption vessel comprising, a first adsorbent or adsorbent layer and a second adsorbent or adsorbent layer, wherein the first adsorbent or adsorbent layer and the second adsorbent or adsorbent layer are configured such that the first adsorbent or adsorbent layer adsorbs at least a major proportion of the hydrocarbons with at least seven carbon atoms from a given amount of the process stream passed trough the adsorption vessel during an adsorption time period and the second adsorbent or adsorbent layer.

Abstract: The present invention proposes a gas treatment process in which a process arrangement comprising three process units is used, the gas treatment process comprising subsequently operating a different one of the three process units in a heating mode during a heating phase, the heating mode comprising heating a first gas stream to a first temperature level using a first heat exchanger, introducing the first gas stream at the first temperature level to the process unit which is operated in the heating mode, withdrawing a second gas stream from the process unit which is operated in the heating mode, and thereafter cooling the second gas stream to a second temperature level using a second heat exchanger.

Abstract: A pressure vessel comprising a cylindrical middle section, at a first end of which there is provided a top end cover, and at the second end of which there is provided a bottom end cover, the pressure vessel comprising an outer casing, wherein at least in the cylindrical middle section there is provided an insulation arrangement on the inside of the outer casing, the insulation arrangement comprising at least one insulation material layer, and a protective layer provided on the inside of the insulation arrangement, wherein at least one insulation material layer comprises a plurality of insulation material plates, especially ceramic fibre plates, and/or the protective layer comprises a plurality of protective plates, and wherein the cylindrical middle section is provided with a plurality of rings adapted to secure the at least one insulation layer and/or the protective layer to the outer casing.

Abstract: The present invention proposes a gas treatment process in which a process arrangement comprising three process units is used, the gas treatment process comprising subsequently operating a different one of the three process units in a heating mode during a heating phase, the heating mode comprising heating a first gas stream to a first temperature level using a first heat exchanger, introducing the first gas stream at the first temperature level to the process unit which is operated in the heating mode, withdrawing a second gas stream from the process unit which is operated in the heating mode, and thereafter cooling the second gas stream to a second temperature level using a second heat exchanger.

Abstract: A process for removal of unwanted components from a feed gas mixture, wherein a temperature swing adsorption unit comprising at least two adsorption vessels is used, the method comprising cyclically operating the temperature swing adsorption unit in successive operation modes in each of which a different one of the at least two adsorption vessels is operated in an adsorption mode while a further one of the at least two adsorption vessels previously operated in the adsorption mode is operated in a regeneration mode, the adsorption mode comprising forming an adsorption gas stream using a part of the feed gas mixture and passing the adsorption gas stream through the adsorption vessel operated in the adsorption mode, and the regeneration mode comprising passing a regeneration gas stream through the adsorption vessel operated in the regeneration mode, thereby forming the purified gas mixture.

Abstract: A method for recovering helium from a feed gas mixture comprising helium, carbon dioxide and at least one of methane and nitrogen, and wherein at least a part of the feed gas mixture is subjected to a separation sequence including a membrane-based separation and an adsorption-based separation forming a helium product, wherein the the membrane based separation is performed using a first membrane separation step and a second membrane separation step, the membrane based separation and the separation sequence includes no further membrane separation steps, the adsorption based separation is performed using a pressure swing adsorption step, at least a part of the feed gas mixture is subjected to the first membrane separation step forming a first retentate and a first permeate. A corresponding arrangement is also provided.

Abstract: The invention relates to a method for obtaining natural gas components, wherein, using natural gas, a feed mixture containing methane and helium is provided and subjected to a separating sequence so as to obtain a natural gas product which is enriched with methane and depleted of helium in comparison to the feed mixture and a helium product which is depleted of methane and enriched with helium in comparison to the feed mixture, which method comprises one or more membrane separating steps and one or more pressure change adsorption steps. According to the invention, the feed mixture is provided using natural gas containing methane, higher hydrocarbons, helium and carbon dioxide, and the providing of the feed mixture comprises depleting the natural gas used for provision of the feed mixture of carbon dioxide and of the higher hydrocarbons. The present invention also relates to a corresponding system.

Abstract: A pressure vessel comprising a cylindrical middle section, at a first end of which there is provided a top end cover, and at the second end of which there is provided a bottom end cover, the pressure vessel comprising an outer casing, wherein at least in the cylindrical middle section there is provided an insulation arrangement on the inside of the outer casing, the insulation arrangement comprising at least one insulation material layer, and a protective layer provided on the inside of the insulation arrangement, wherein at least one insulation material layer comprises a plurality of insulation material plates, especially ceramic fibre plates, and/or the protective layer comprises a plurality of protective plates, and wherein the cylindrical middle section is provided with a plurality of rings adapted to secure the at least one insulation layer and/or the protective layer to the outer casing.