Gas Processing

The removal of hydrogen sulfide (H2S) from gas is not easy. Our processes Shell / Paques Process and our Thiopaq® process remove H2S from natural gas, biogas, landfill gas, and other gas streams.

Our technology achieves reductions in H2S to levels suitable for engines, turbines, boilers and heat recovery equipment. Even biogas conversion to pipeline specification gas is achievable using NATCO technology for acid gas and water removal.

Our cost effective processes offer numerous benefits:

  • Low chemical consumption
  • Low energy
  • Minimal operating resources
  • Flexibility in footprint

Our systems are robust and adequately suited for all processes with:

  • Massive buffering capacity
  • No plugging in process equipment
  • Self-sustaining and self-regulating biology



These processes have proven to be ideally suited to environmentally sensitive areas where venting, incineration, or reinjection of the H2S are not desirable options.