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US 2018/0001299 A1Published application
Method to selectively remove hydrogen sulfide from a gas stream using a functionalized cross-linked macroporous polymer
AssigneeDow Global Technologies LLC
InventorsRunyu TAN, Ajay N. BADHWAR, H. Robert GOLTZ, Gerardo PADILLA
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Abstract
A process is disclosed for the removal of hydrogen sulfide (H2S) from natural. This process provides for passing a natural gas feedstream comprising H2S though a regenerable adsorbent media which adsorbs H2S to provide an H2S-lean natural gas product and H2S. The regenerable adsorbent media of the present invention is a tertiary amine functionalized cross-linked macroporous polymeric adsorbent media.
Claims12
A process for removing hydrogen sulfide (H2S) from a natural gas feedstream comprising H2S comprising the steps of:
- (a) providing an adsorbent bed comprising a tertiary amine functionalized cross-linked macroporous polymeric adsorbent media, wherein said adsorbent media adsorbs H2S;
- (b) passing the natural gas feedstream through the tertiary amine functionalized cross-linked macroporous polymeric adsorbent bed to provide a H2S-lean natural gas stream and a hydrogen sulfide-loaded tertiary amine functionalized cross-linked macroporous polymeric adsorbent media;
- (c) further treating, recovering, transporting, liquefying, or flaring the H2S-lean natural gas stream,
- (d) regenerating the loaded tertiary amine functionalized cross-linked macroporous polymeric adsorbent media for reuse by desorbing the adsorbed H2S, and
- (e) discharging the H2S to be collected, flared, neutralized by caustic, converted to elemental sulfur, reinjected, or converted to sulfuric acid.
2 more elements
Dependencies are inferred from the claim text.