Sulfur Recovery

The Oberlin Filter is a natural choice for dewatering elemental sulfur from varying amine processes providing a dry filter cake.  The filter has the capability to provide an excellent filter cake wash for chemical recovery and solids purity.  The filter units also have odor containment capabilities.  Filters can be provided for hazardous classification areas.  The Oberlin Filter is used in a wide range of sulfur recovery applications ranging from oilfield units, midstream operations, landfill gas operations and biodigesters.

Dry Filtered Sulfur Cake

Case History Application

Oberlin recently placed an OPF14 MLP filter unit on a FPOS ship in the Adriatic, just off the coast of Italy. The unit has been operating since April of 2013. The unit has 14 square feet of filter area and is producing 3" to 4" thick filter cakes repeatedly since its start. Weight of dry sulfur filter cake are as much as 2 long tons per day. Depending on chemistries employed, results may differ. 

Industries & Applications

• Landfill Gas

• Coal Gasification Plants

• Claus Tailgas Cleanup

• Refinery Desulfurization

• Water Treatment Facilities

• Geothermal Plants

• Offshore Platforms


• Chemical Plants

• Lean Amine

• Rich Amine

Stainless Steel Oberlin Filter

Landfill Gas
Oberlin Filters in landfill gas operations listed on the Landfill Methane Outreach Program

Sulfur Recovery - Wet Scrubber: Landfill Gas Project in Roosevelt, Washington

The Oberlin Filter - OPF4SD with 4 ft² of filtering area is used in this application.   


Overview of Filter Operation:

  • Application: Sulfur recovery

  • Fluid: Process Mother Liquor

  • Flowrate:  30 GPM

  • Solids: 115 lbs of dry sulfur cake per day

  • Dry Filter Cake is 60-70% Solids by Weight

  • Filter Cycle Range : 60 - 130 minutes


Sulfur Recovery - Wet Scrubber: Landfill Gas Project, City of Dallas, TX  


This landfill operates a system that removes H2S from landfill gas using a liquid scrubber (similar to Sulferox or LO-CAT).  Once the H2S is converted to sulfur, it is removed from the recirculating solution using the Oberlin Filter.  A vacuum filter was replaced because it was required to manually scrape the cake off of the cloth drum along with the high variation of quality of filter cake produced (often losing more solution than it should).


Oberlin Pressure Filter Model OPF-12SD with 12 ft² of filtering area is used in this application.

Overview of Filter Operation:

  • Application: Sulfur recovery

  • Fluid: Process Mother Liquor

  • Flowrate: 120 GPM nominal

  • Solids: 1,000 pounds dry sulfur cake per day




Sulfur Recovery - Wet Scrubber

The Oberlin Filter is used for sulfur recovery for bio-digester off gas for food plant in Tennessee.

On-Line Filtration

  • Automatic pressure filter operates with all types of chemical treatments that produce insoluble sulfur
  • Efficiently removes solids down to 1 micron
  • Automatically cycles without operator intervention
  • Filter cake dryness to over 70% typical
  • Depending on pretreatment and feed solids loading the Oberlin Filter can obtain between 0.25 LTPD and 1 LTPD per square foot of filter area


For additional information please contact:

Steve Rose - Energy Division Manager

Chemistry Specialist

Office: 262-547-4900 × 204


Animation of filtration process for sulfur application with a reusable belt