Dry Wash Resins

Dry Wash Resins, Dry Wash Resins

Dry Wash Resins or sometimes called Polishing Resins are a gel-type dried cation exchange resin in a highly regeneratable form that is designed to process organic liquid streams.

Also, It has many applications but this particular model of resin is designed to absorb Glycerin, water, MEOH and Soaps to essential be used as a final last call cleanup of any remaining impurities in the flow.

Technically, it is a microporous cation exchange resin with beads of uniform particle size and color.  Hence, the monodispersed has incredible kinetics to this mechanically and chemically very strong resin.

What can this Resin do?

  • Simultaneously removes soaps and salts in your feed stream
  • Very low differential pressure across each resin tower
  • It will handle high levels of glycerin content in your stream.

Benefits of this Dry Wash Resin?

  • The washing of your methyl ester no long requires water
  • Very low cost operation
  • No moving parts on the towers
  • Can be regenerated many times for reuse.  Recycled product feeds back into transesterification stage to reduce losses.
  • Continuous process

The design to eliminate a traditional process of using water to wash the biodiesel.

Dry Wash Resins General Description

Ionic Form as ShippedNeutral
Functional GroupAcidic

Dry Wash Resins Physical and Chemical Properties

Metric Units
Glycerine Capacity at 1-2 BV/H ThroughputMax. G/L250
* Uniformity Coefficient Max.1.1
Mean Bead Size *MM(0.62 +/- 0.07)
Bulk Density(+/- 5%)G/L750
DensityApprox. G/ML1.25
Storabilityof the productMax. Years3
StorabilityTemperature RangeDegrees C-30 - + 70

Wash Resins Operating Conditions

Operating ConditionsMetric Units
Operating TemperatureDegrees C30 - 70 C
Bed DepthMin. / Max. MM1250 / 3000
Pressure LossMax. KPA200
Linear VelocityOperationMax. M/H2
Specific Flow RateExhaustionMax. BV/H2
(External / Internal)
Vol. % 20
RegenerationApprox. L/L10
Linear VelocityRegenerationApprox. M/H2

A Typical Process

A Fixed Bed setup is used to hold the resins in place within the vessel.  An 80 Mesh screen that is well supported is placed and installed in the bottoms of each of the vessels.  Careful planning is required to avoid opening the special screens that are installed and damaging them.  In addition, injection into the vessels is done carefully to avoid liquid channeling.  All vessels are designed and stamped to ASME requirements.

Dry Wash Resins, Dry Wash Resins

  • In addition, the recommended operating conditions refer to the use of the product under normal operating resin tower conditions.  It is based on many previous tests and operating plants and the data obtained by those operating plants.  However, additional information and data are sometimes needed to calculate the resin volumes precisely and required for ion exchange units.  These are to be found in our various resin tower technical information sheets.

Also, if you need the Vessels and Skids provide as well, pls visit the SRS Parent company for a quote.

In addition, if you are looking for the Esterification Resins or Guard Resins pls click on the links.