H2S Removal From Natural Gas: SourSep™
Problem
Sour gas is a headache right from the wellhead. Simple bulk removal of H2S upstream will mitigate the problem. Upstream bulk removal can be combined with re-injection or Claus processing to unload downstream sweetening facilities. Downstream facilities can then be configured to merely polish the gas to pipeline specs - allowing a wider choice of downstream processing options.
Membrane Solution
MTR’s SourSep™ systems bulk remove H2S from pressurized sour gas in a simple single stage process. Bulk removal (>75%) will generate a very sour permeate which can be re-injected or processed in a Claus plant. The unit is simple, has no moving parts, no absorbents or adsorbents and processes only gas. No liquids or solids are used or produced. The incoming high pressure sour stream is split into a moderately sweetened high pressure product stream and a low pressure H2S rich reject stream.
SourSep™ bulk H2S removal can be combined with (i) reinjection or (ii) Claus processing for bulk H2S disposal. Moderately sweetened product gas can be polished using (iii) lightly loaded conventional amine units with Claus or (iv) H2S scavenger processes.
For H2S removal from fuel gas — see MTR leaflet "Fuel Gas Conditioning"
Benefits
SourSep™ unit for installation on an Indonesian remote production field
- Simple bulk H2S removal down to 200-300 ppm
- Product gas with low hydrocarbon and water dewpoint
- Robust, proven membrane performance at high H2S content
- Skid mounted equipment, can be trucked to site and installed fast
System Performance
- Feed flow rate: up to 100 MMSCFD
- Feed H2S content: >5% to <100 ppm
- Product gas pressure 30 to 1200 psia
- H2S reduction up to 90%
Application Options
- Bulk upstream removal
- Minimize scavenger loading
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