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 Shipped Neutral
Functional Group Acidic
Dry Wash Resins Physical and Chemical Properties
Metric Units Glycerine Capacity at 1-2 BV/H Throughput Max. G/L 250
* Uniformity Coefficient Max. 1.1
Mean Bead Size * MM (0.62 +/- 0.07)
Bulk Density (+/- 5%) G/L 750
Density Approx. G/ML 1.25
Storability of the product Max. Years 3
Storability Temperature Range Degrees C -30 - + 70
Wash Resins Operating Conditions
Operating Conditions Metric Units Operating Temperature Degrees C 30 - 70 C
Bed Depth Min. / Max. MM 1250 / 3000
Pressure Loss Max. KPA 200
Linear Velocity Operation Max. M/H 2
Specific Flow Rate Exhaustion Max. BV/H 2
(External / Internal)
Vol. % 20
Regeneration Approx. L/L 10
Linear Velocity Regeneration Approx. M/H 2
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.
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.