SepraTek™ hollow fiber composite membranes are installed in standard hollow fiber modules housed in pressure vessels which contain an organic liquid to be dehydrated. They are designed for high temperature processing of volatile organics such as alcohols and other solvents used.
Especially, SepraTek possesses diverse membrane module fabrication techniques including potting resin formulation, potting art and module design. Membrane modules which are very stable even in aggressive organic solvent at high temperature can be fabricated by an established methodology.
A membrane system is designed and engineered through systematical simulation and a sequence of groundwork so as to maximize membrane performance as well as the economical value of the membrane process.
- Membrane module and assembly
- In the process, feed flows along with the inside of respective hollow fiber membrane loaded in membrane module. In order to simplify piping and to apply vacuum effectively to the permeate side of membrane module, a number of unit modules are packed into a body, called “module assembly” in fabricating a large scale of pervaporation system. The number of unit modules can be determined, depending on the hydraulic characteristics of feed, the scale of pervaporation system, separation extent to be achieved, and so on.
- Scope of supply
- SepraTek can design and supply complete separation systems based on pervaporation/vapor permeation. SepraTek supplies completely preassembled units as well as (basic) engineering with components.
- SepraTek™ pervaporation system features
- no introduction of additional chemicals - complete solvent dehydration by pervaporation membranes irrespective of azeotrope formation - no possibility of contamination
- a flexible process - a single unit can be designed to treat a large number of solvents
- a choice of batch or continuous pervaporation systems, or vapor permeation depending on the duty
- experience with a wide range of common solvents
- able to dehydrate chemicals without any decomposition
- vapor permeation process of vapor/vapor mixture
- combined with evaporation to recover solvents from mother liquors
- combined with distillation to reduce capital costs and energy consumption
- both on and off-site piloting available
- standard skid mounted units for fast delivery and installation and minimum hook-up time
- very short payback time
- Continuous Pervaporation/Batch Pervaporation
- SepraTek™ pervaporation units are used for continuous or batchwise, efficient drying of a wide range of liquid organics. Standard units are available at pressure ratings up to 20 bar and temperatures to 100°C, allowing economic dehydration down to ppm water levels.
- Continuous Process Features
- for continuous processing of solids-free feeds
- most economical process option for feeds with low water content
- Batch Process Features
- simple equipment
- very flexible in operation
- ideal for multi-purpose plants, e.g. toll recycling
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