Deep gas cleaning of highly permeating impurities using a membrane module with a feed tank

Experimental Evaluation of the Efficiency of Membrane Cascades Type of “Continuous Membrane Column” in the Carbon Dioxide Capture Applications

“…The most promising alternative to the chemical absorption method are technological solutions based on the membrane gas separation method, since these processes are characterized by energy efficiency [7][8][9], ease of scaling, environmental friendliness, and the possibility of "tuning" the process by selecting the most efficient membranes and varying the configurations of membrane devices. Attracted by the economic and environmental advantages of membrane technology, many researchers [10][11][12][13] focused on two areas of investigation, the search and creation of new materials (membranes) [14][15][16][17][18][19] and the designing of new membrane processes and devices [20][21][22][23][24].…”

High purification of gases by diffusion through polymer membranes

“…Finding the value of constant β from boundary con dition (30) and determining the value of the separation factor as F = (c 1out ) -1 , we obtain for the "total reflux" mode (35) From Eq. (35) it follows that separation factor F 0, p depends on the separation coefficient, the Peclet …”

“…It was shown that polymeric membranes can be used for high purification of gases for the removal of impurity water [26][27][28] or hydrocarbons and fluoro carbons [29,30]. The use of polymeric membranes for removing radioactive krypton and xenon with a high separation factor from the waste gas emitted from nuclear power plants [31,32] and carbon tetrafluoride cleaning of impurity freons resulting from surface etching with CF 4 [33] was reported.…”

High purification of gases by the hybrid gas hydrate-membrane method

“…In addition, membrane methods are also widely used as a stand alone practice in their various modifi cations for separation and purification of gases [9][10][11][12][13]. The use of membranes for gas purification is based on the fact that redistribution of the components of a gas mixture takes place during its passage through the membrane; that is, the highly permeable components enrich the mixture in the low pressure compartment downstream of the membrane, and the less permeable components enrich the mixture in the high pressure compartment upstream of the membrane.…”

“…For example, a cascade of the continuous membrane column type [9,10] was proposed for improving the separation and purification efficiency, a membrane module with a feed reservoir was used for removing poorly permeable impurities [11,12], and a membrane module with pulsed product removal was designed for fine gas cleaning to remove highly perme able impurities [13]. We propose a new method for preventing a poorly permeable component from concentrating in the high pressure compartment upstream of the mem brane.…”