Tanal
General Information
Distillation membrane is a hollow fiber hydrophobic PTFE membrane used in direct contact membrane distillation, which is a thermally driven separation process.PDistillation membrane is made of high-performance hydrophobic hollow fiber membranes in membrane distillation system.
The working principle of membrane distillation:
First, the feed liquid is heated to a certain temperature by using factory waste heat or steam, and then pumped into the membrane distillation module through the raw material pump. Membrane distillation modules are potted with hollow fiber microporous hydrophobic PTFE membranes, which have a large number of micropore. At high temperatures, the feed liquid generates a vapor pressure difference on two sides of the membrane. A large number of micropore can allow the evaporated water vapor to pass through the membrane pores, enter the other side of the membrane hollow fibers, and use the vacuum system to pump it out. After a large amount of water vapor volatilizes, the feed liquid is concentrated. The volatilized steam uses the heat pump to recover heat and returns to reheat the feed liquid to reduce the energy consumption of the entire system.
Features
Super hydrophobic PTFE membraneHigh tolerance to acid and alkali
Uniform pore sizes
Multiple options for dimensions and membrane areas
Advantages
Applicable for critical applicationsHigh separation efficiency
Adapt to different scale projects
Applications
Seawater desalinationWastewater zero discharge for wastewater treatment
Acid alkali concentration
Concentration or purification crystallization of saline solution
Concentration of aqueous solutions containing non-volatile or semi-volatile organic compounds
Dimensions
|
Model |
D1 (mm/inch) |
L (mm/inch) |
L1 (mm/inch) |
Liquid port |
Vacuum port |
|
TCMD440-5 |
110/4.33 |
1,598/62.91 |
1,100/43.31 |
DN25 union |
DN25 union |
Specifications
|
Membrane material |
PTFE |
|
Housing material |
CPVC |
|
Fiber ID/OD |
0.8/1.6 mm |
|
Pore size |
0.1 μm |
|
Liquid flow path |
External of hollow fibers |
|
Membrane area |
5 m2/54 ft2 |
|
Weight |
10.9 KG/24 lbs |
Operating Limits
|
Working temperature |
50 - 80℃ |
|
Max. feed pressure |
0.2 MPa (29 psi) |
|
Working pH |
0 - 14 |
1. When the liquid temperature is 85°C, the safe internal and external pressure difference of the membrane hollow fibers should be less than 0.08 MPa, and the maximum pressure difference should not be greater than 0.1 MPa.
2. When used for the concentration of different materials, the feed liquid shouldn’t contain organic solvents such as alcohols, esters, hydrocarbons, ethers, oils, etc., otherwise the service life of hollow fibers will be shorter and leakage may happen.
3. A certain flow rate is required when the feed liquid flow over the outer surface of the membrane hollow fibers. Please adjust the flow rate according to the actual conditions such as the viscosity, temperature, and crystallinity of particles of the feed liquid to prevent crystallization or high surface concentration of the membrane hollow fibers from evaporation decrease.
