Method for smoothing time-varying concentration of a fluid stream
AssigneeUop LLC
InventorsShain-Jer Doong, Christopher B. McIlroy
Life of this patent
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Abstract
A process for reducing the size of sulfur removal units is presented. The process includes passing a regeneration gas from a regenerated contaminant adsorption unit through a fixed bed adsorber. The fixed bed adsorber adsorbs sulfur compounds above an equilibrium condition and releases adsorbed sulfur compounds below the equilibrium condition. The peak levels of sulfur in the regeneration gas are reduced and the processing of the regeneration gas reduces the size of sulfur removal units.
Claims19
A process for removing sulfur compounds from a natural gas stream comprising:
- passing a natural gas feed stream to an acid gas removal unit to generate a partially sweetened natural gas stream and an acid gas stream;
- passing the partially sweetened natural gas stream to an adsorption unit for adsorbing water and sulfur compounds to generate a treated natural gas stream;
- passing a regenerator gas stream to the adsorption unit to generate a regen gas enriched with sulfur compounds;
- passing the regen gas enriched with sulfur compounds to a fixed-bed adsorber to generate a regen gas effluent stream with a reduced level of peak sulfur concentration;
- and
- passing the regen gas with the reduced level of peak sulfur compounds to a sulfur removal unit.
A process for removing sulfur compounds from a natural gas stream comprising:
- passing the natural gas stream to an acid gas removal unit to generate a first stream comprising sulfur compounds, and a second stream comprising natural gas with reduced sulfur compounds;
- passing the second stream to a gas treatment unit to generate a treated gas stream;
- passing a regenerator gas stream to the gas treatment unit to generate a regen gas comprising sulfur compounds;
- splitting the regen gas into two portions, and passing a first portion to a fixed bed adsorption unit, having an adsorbent, to generate an adsorber effluent gas with a reduced level of peak sulfur concentration, wherein the adsorption unit adsorbs sulfur compounds when the sulfur compound concentration in the regen gas is above an equilibrium concentration and desorbs sulfur compounds when the sulfur compound concentration in the regen gas is below the equilibrium concentration;
- combining the adsorber effluent gas with a second portion of the regen gas to form a combined stream;
- and
- passing the combined stream to a sulfur removal unit, to generate a second acid gas stream, and a sweet gas stream.
Dependencies are inferred from the claim text.