Hollow fiber air drying

Modeling multicomponent gas separation using hollow‐fiber membrane contactors

“…1974;Wang et al, 1992). However, the overall system recovery R / F decreases due to consumption of potential product gas for the purge (or sweep) stream.…”

“…The use of permeate purging to reduce required membrane area for such applications has been described in general (Pan and Habgood, 1974) and for the removal of CO, from sealed life support systems such as submarines and space capsules (Li et al, 1990). Membrane-based air drying is practiced using permeate purging to enhance the rate of removal of water from the feed gas (Wang et al, 1992). The following simulation of air drying demonstrates the effect of purge rate on water removal from air.…”

“…High permeability components present in low concentrations, such as water in air, are particularly sensitive to concentration polarization (or mass-transfer limitations) and Solid lines correspond to simulations with water permeancc of 1,000 GPU and the dashed lines represent simulationa with a water permeance of 350 GPU Other module dnd membrane parameters are recorded in Tables 1 and 2 shell-side fluid flow maldistribution (Wang et al, 1992). These factors act to decrease the efficiency of the separator for removing such components from the feed gas.…”

“…1992). In addition to dehydration of natural gas, air can be dehydrated using membrane systems, and such systems supply dry air for small laboratory and instrumentation applications (Wang et al, 1992). The recovery of volatile organic compounds from mixtures with air or other permanent gases such as methane or hydrogen is a recently commercialized membrane-based separation used for removing low levels of condensable organics from gas streams employing novel.…”

Investigation of moisture transfer effectiveness through a hydrophilic polymer membrane with a field and laboratory emission cell

“…From the viewpoint of low cost and low energy requirements, the separation of water vapor from air by membrane separation processes has been studied by many workers [1][2][3][4][5]. Some other workers also studied the membrane systems for total energy recovery [6][7][8], which has similar mechanisms to air dehumidification.…”