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PV & VP ZEOLITE MEMBRANE
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Nanjing Tangent Fluid Technology Co. Ltd (TANGENT)
Jiangsu, China
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Combining membrane permeation and evaporation to create pervaporation is an energy-efficient process. For many different procedures, it is thought to be a desirable substitute for other separation techniques. This can be applied to wastewater purification, ethanol or methanol removal, dehydration of solvents and other volatile organics, and breaking azeotropes. When two or more components separate across a membrane by varying rates of diffusion through a thin layer and an evaporative phase shift akin to a basic flash step, this process is known as pervaporation. To enable preferential permeation of one component across the membrane, a concentration and vapor pressure gradient are employed. 
The instantaneous condensation of the penetrated vapors is accompanied by a vacuum supplied to the permeate side. Since pervaporation is usually used to extract a little amount of liquid from a mixture, excellent membrane selectivity is crucial. Since 2007, high-performance Zeolite photovoltaic membranes have been developed and successfully used in China. In numerous areas, including the pharmaceutical, semi-conductivity, petroleum chemical, etc., this new technology has gained widespread acceptance. Numerous studies have demonstrated the benefits of PV&VP technology over conventional dehydration techniques as zeolite adoption, distillation, and evaporation.

Process Characteristics of PV/VP

  •  Low energy consumption, less running cost                                  
  •  No entrainer required, no contamination to product
  •  Easy operation and less maintenance
  •  Functions independent of vapor/liquid equilibrium
  •  Reliable treated solvent quality
  •  Less labor cost
  •  Less waste discharge 

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