Dow Global Technolgoies LLC

The Dow Chemical Company

Ajay N Badhwar

Scott T Matteucci

H Robert Goltz

Nicholas J Shurgott

Jonathan W Leister

Ross E Dugas

A process for purification of a carbon dioxide feedstock that includes carbon dioxide and gaseous and liquid C+ hydrocarbons. Specifically, a carbon dioxide feedstream is passed through one or more separation unit, each separation unit removing one or more C+ hydrocarbon from the carbon dioxide feedstream to provide a richer carbon dioxide gas stream. The one or more separation unit employs an adsorption media and has an adsorption step and a media regeneration step.

Process for carbon dioxide recovery from a gas stream containing carbon dioxide and hydrocarbons

Disclosed is an improved process for recovering condensable components from a gas stream, in particular, hydrocarbons from a gas stream such as natural gas. The present process uses solid adsorbent media to remove said hydrocarbons wherein the adsorbent media is regenerated in a continuous fashion in a heated continuous counter-current regeneration system, wherein said heated regenerated adsorbent media is cooled prior to reuse.

Temperature controlled adsorption process for recovering condensable components from a gas stream

Disclosed is a method for running natural gas powered stationary combustion systems, such as an internal combustion engine, a furnace, a fired heater, a power plant, an incinerator, and the like. In one embodiment of the present method, ethane and heavier hydrocarbons or propane and heavier hydrocarbons () are removed () from a natural gas feedstream () to provide the methane-rich natural gas stream () used to fuel the stationary combustion system (). One embodiment of this method provides for the use of a regenerable adsorbent media to remove the higher hydrocarbons which is regenerated by a microwave heating system. Said regeneration step may be operated as a batch process, a semi-continuous process, or a continuous process.

Methane-rich natural gas supply for stationary combustion systems

A method is disclosed for the separation of ethane and heavier hydrocarbons or propane and heavier hydrocarbons from natural gas to provide a methane-rich natural gas stream and less volatile natural gas liquids (NGLs). This method provides for passing a natural gas feedstream though a regenerable adsorbent media which adsorbs the NGLs to provides the methane rich natural gas product. The regenerable adsorbent media of the present invention is a cross-linked macroporous polymeric adsorbent media.

Method for extracting natural gas liquids from natural gas using an adsorbent media comprising a cross-linked macroporous polymer

Disclosed is a method of sequentially separating and recovering one or more NGLs () from a natural gas feedstream (). Specifically, a raw natural gas feedstream () is passed through two or more NGLs separation unit () wherein each separation unit removes one or more NGLs from the natural gas feedstream to provide a methane-rich natural gas supply (). Each separation unit employs an adsorption media and has an adsorption step and a media regeneration step wherein the regeneration step may be operated as a batch process, a semi-continuous process, or a continuous process. One embodiment of this method provides for the use of a different regenerable adsorbent media in each separation unit.

Sequential removal of NGLs from a natural gas stream

A method is disclosed for the separation of ethane and heavier hydrocarbons or propane and heavier hydrocarbons from natural gas to provide a methane-rich natural gas stream and less volatile natural gas liquids (NGLs). This method provides for the use of a regenerable adsorbent media comprising a porous cross-linked polymeric adsorbent, a pyrolized macroporous polymer, or mixtures thereof, which is regenerated by a pressure swing adsorption (PSA) process, temperature swing adsorption (TSA) process, or combination of the two. Said regeneration step may be operated as a batch process, a semi-continuous process, or preferably as a continuous process.

Method for regenerating adsorbent media used for extracting natural gas liquids from natural gas

The present invention relates to a method of separating and recovering NGLs from a natural gas feedstream. Specifically, the present method allows for the separation of ethane and heavier hydrocarbons and/or propane and heavier hydrocarbons from a raw natural gas feedstream to provide pipeline quality natural gas. One embodiment of this method provides for the use of a regenerable adsorbent media which is regenerated by a microwave heating system. Said regeneration step may be operated as a batch process, a semi-continuous process, or a continuous process.

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Houston, TX, United States of America

Ajay N Badhwar