Sulfur Removal & Recovery

Technology Overview Flow DiagramProject Case

Liquid phase oxidation process for sulfur removal utilizes complex iron ions as the catalyst, hydrogen sulfide dissolves in the solution when feed gas and catalyst solution contact each other. Hydrogen sulfide-rich solution is regenerated by air entering the oxidation tower. By circulation, hydrogen sulfide will be oxidized to sulfur, and to become a filter cake through filtration. This technology can also adopt self-circulation way, combining absorption column and oxidation column, so absorption and regeneration can happen at the same time.


Technical Characteristics:

  • Integration of sulfur removal and recovery

  • Low investment

  • Low energy consumption

  • Nontoxic and harmless catalyst

  • High efficiency in organic sulfur removal

  • No discharge of liquid waste


Device characteristics:

Skid-mounted device available for below 10t/d scale; modular device available for 10t/d to 30t/d scale.


Working Conditions and Application Areas

  • Applicable scale for a single device: 0.5t/d~30t/d

  • Purity of product gas(H2S content): as low as 1ppm

  • Applicable gas source pressure: atmospheric pressure~30MPaG

  • Applicable gas temperature: 0~60℃


Application Areas:

  • Sulfur removal for natural gas and associated gas

  • Sulfur removal for sour tail gas and sulfur recovery

  • Sulfur removal for Claus device tail gas

  • Sulfur removal for refinery gas

  • Sulfur removal for coke oven gas

  • Sulfur removal for biomass gas

  • Sulfur removal for syngas