Membrane gas absorption

Klassen R, Feron PHM, Jansen AE. Flue gas treatment with membrane gas absorption. In Proceedings of the 1998 International Joint Power Geneneration Conference, PWR-Vol. 33, ASME, Volume 2, 1998 309-316. 

By using the rectangular transverse-flow module developed by TNO (The Netherlands), an industrial membrane gas absorption unit for ammonia recovery has been installed in The Netherlands [21]. Also, a unit for C02 removal has been tested [22]. 

Klaassen R and Jansen AE. Achieving fine gas desulphurization with membrane gas absorption. Filtration Separation 2003 40 26. Mavroudi M, Kaldis SP, and Sakellaropoulos GP. Reduction of CO2 emissions by a membrane contacting process. Fuel 2003 82 2153. Sengupta A and Sirkar KK. Analysis and design of membrane permeators for gas separation. In Noble RD and Stem SA, eds. Membrane Separation Technology. Principles and Applications, Amsterdam Elsevier Science, 1995, p. 498. 

Qi and Cussler [26] investigated the removal of ammonia by H2SO4. H2SO4 being a strong acid, the mass resistance offered by the membrane controlled the process. An industrial membrane gas absorption unit for ammonia recovery from an ammonia containing off-gas stream produced in a dyes intermediates production plant has been installed by TNO. The membrane plant is able to remove 99.9% of ammonia and produces aqueous solutions of 27% ammonia that can be reused in the dyes process [38]. 

Jansen AE, Klaassen R, Feron PHM, Hanemaaijer JA, and ter Meulen BPh. Membrane gas absorption processes in environmental applications. In Crespo JG and Boddekar KW, Eds. Membrane Processes in Separation and Purification. Dordrecht Kluwer Academic, 1994 pp. 343-356. 

Membrane gas absorption (MGA) is a gas-liquid contacting operation [1,2,24,25]. The key element in the process is a microporous hydrophobic HFM. The process is illustrated in Figure 4.3 for removal of component X from a gas stream. The gas stream is fed along one side of the membrane where an absorption liquid is flowing at the other side of the membrane. The hydrophobic membrane wall keeps gas phase and absorption liquid separated from each other. The absorption liquid is chosen in such a way that it has a high affinity for component X. Component X will now diffuse through the gas-filled pores of the membrane to the other side of the membrane where it is absorbed in a liquid phase. Absorption in the liquid phase takes place either by physical absorption or by a chemical reaction. This determines the selectivity of the process. The membrane used... 

P.H.M. Feron and A.E. Jansen, Capture of carbon dioxide using membrane gas absorption and reuse in the horticultural industry. Energy Comers. Manage. 36 (1995) 411-414. 

Klaassen R, Jansen AE. Achieving flue gas desulphurization with membrane gas absorption. Filtration Sep 2003 40 26. 

Membrane gas absorption (MGA) is a gas-Hquid (G—L) contacting device that uses a microporous hydrophobic hollow fibre membrane element similar to the membrane contactors discussed earfter. The hydrophobic membrane barrier separates the gas phase from the absorption Hquid phase. The gas to be separated diffuses through the gas-fiUed pores of the membrane and is absorbed in the Hquid. Absorption is based on physical absorption or by a chemical reaction. Both phases should not mix in order for the operation to be efficient. 

Figure 3.27 Flow schematic of flue gas desulphurisation by membrane gas absorption. Source [39],...

R. Klassen, A.E. Jansen, Achieving flue gas desulphurisation with membrane gas absorption, Fdt. Sep. (2003) 26-28, September. 

Membrane Processes in Separation and Purification published in 1993, contains chapters on pervaporation, facilitated transport membrane processes, membrane gas absorption processes, hollow fiber contactors, membrane reactors, and the preparation and application of inorganic membranes. In addition to an introductory chapter by the editors. Polymeric... 

The membrane contactor can be operated in two different ways. The principle of a gas-liquid membrane contactor is given in Figure 1. A gaseous feed, containing CO2 can be fed to the membrane module and the CO2 is selectively removed by absorption in the liquid phase. This is referred to as Membrane Gas Absorption (MGA). It is also possible to use the membrane contactor to regenerate the CO2 rich absorption liquid. In this case the loaded absorption liquid is fed to the membrane module and the CO2 desorbs from the absorption liquid because of a pressure difference across the membrane. This situation is referred to as Membrane Gas Desorption (MGD). 

Figure 1. Principe of membrane gas absorption (MGA) and Membrane Gas Desorption (MGD) process for CO2 removal.

An experimental, lab-scale, setup is available that allows for several configurations of gases and liquids, varying temperatures, and varying pressures (feed pressure and pressure difference across the membrane). In the experimental setup both the membrane gas absorption (MGA) step, for the transfer of CO2 from the gas phase to the liquid phase, and the membrane gas desorption (MGD) step, for the regeneration of the absorption liquid loaded with CO2, have been studied. It is possible to study the permeation behavior across the membrane of both pure CO2 and of binary gas mixtures (CO2-H2 and CO2-CH4). Two mass flow eontrollers are available to prepare a mixed gas stream with an arbitrary ratio of the two gases. 

Ahmad, A.L. and W.K.W. Ramli. 2013. Hydrophobic PVDF Membrane via Two-stage Soft Coagulation Bath System for Membrane Gas Absorption of COj. Separation and Purification Technology 103 230-240. doi 10.1016/j.seppur.2012.10.032. 

S. Wongchitphimon, R. Wang, R. Jiraratananon, Snrface modification of polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) hollow fiber membrane for membrane gas absorption, J. Memb. Sci. 381 (2011) 183-191. 

---