Systems and processes for heavy hydrocarbon removal
AssigneeBASF SE
InventorsWilliam B. Dolan, Mark Tomczak
Life of this patent
Estimating the term…
Abstract
Disclosed herein are processes and systems for removing heavy C5+ hydrocarbon components from a natural gas feed gas by subjecting the natural gas feed gas stream to an adsorber. The adsorber in the processes and systems described herein operating at a pressure that may be associated with improved adsorption capacity and longer breakthrough time.
Claims20
A method of removing C5+ hydrocarbons from a natural gas feed gas (FG) stream and sending to a natural gas liquids (NGL) recovery or liquefied natural gas (LNG) facility or a CO2 removal processing unit and/or a pipeline, the method comprising:
- routing the FG at a pressure Padsorber over an adsorber to adsorb C5+ hydrocarbon and provide a heavy hydrocarbon depleted natural gas (HHCDNG) stream at pressure Padsorber ranging from about 300 psia to about 1200 psia, wherein the adsorber comprises a hydrocarbon-selective adsorbent;
- and
- routing the HHCDNG stream through one or more compressors to provide a HHCDNG at pressure P3, wherein P3>Padsorber, and wherein the adsorbent is configured to operate at the pressure Padsorber associated with increased adsorption capacity and/or longer breakthrough time of the C5+ hydrocarbons.
A method of removing C5+ hydrocarbons from a natural gas feed gas (FG) stream and sending to a natural gas liquids (NGL) recovery or liquefied natural gas (LNG) facility or a CO2 removal processing unit or a pipeline, the method comprising:
- routing the FG at a pressure P1 through one or more compressors to provide a FG stream at a pressure Padsorber;
- routing the FG stream at pressure Padsorber through an adsorber, to adsorb C5+ hydrocarbon and provide a heavy hydrocarbon depleted natural gas (HHCDNG) stream at pressure Padsorber, the adsorber comprising a hydrocarbon-selective adsorbent;
- and
- routing the HHCDNG stream through one or more compressors to provide a HHCDNG at pressure P3, wherein P3>P1 and/or P3>Padsorber and/or Padsorber>P1, wherein Padsorber ranges from about 300 psia to about 1200 psia, and wherein the adsorbent is configured to operate at the pressure Padsorber associated with increased adsorption capacity and/or longer breakthrough time of the C5+ hydrocarbons.
A system for removing C5+ hydrocarbons, comprising an adsorber comprising a hydrocarbon-selective adsorbent, the system being configured to route a feed gas (FG) stream at a pressure Padsorber over the adsorber to adsorb C5+ hydrocarbon and provide a heavy hydrocarbon depleted natural gas (HHCDNG) stream at pressure Padsorber ranging from about 300 psia to about 1200 psia, the system further comprising one or more compressors positioned after the adsorber configured to receive HHCDNG at pressure Padsorber and compress the HHCDNG to pressure P3, wherein P3>Padsorber, and wherein the adsorbent is configured to operate at the pressure Padsorber associated with increased adsorption capacity and/or longer breakthrough time of the C5+ hydrocarbons.
Dependencies are inferred from the claim text.