scholarly journals Selective Sulfur Dioxide Absorption from Simulated Flue Gas Using Various Aqueous Alkali Solutions in a Polypropylene Hollow Fiber Membrane Contactor: Removal Efficiency and Use of Sulfur Dioxide

2021 ◽  
Vol 18 (2) ◽  
pp. 597
Author(s):  
Hyun Sic Park ◽  
Dongwoan Kang ◽  
Jo Hong Kang ◽  
Kwanghwi Kim ◽  
Jaehyuk Kim ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Removal Efficiency ◽  
Hollow Fiber ◽  
Flue Gas ◽  
Hollow Fiber Membrane ◽  
Ammonia Solution ◽  
Selective Removal ◽  
Fiber Membrane ◽  
Additional Processing ◽  
Carbon Dioxide Co2

Hollow fiber membrane contactors (HFMCs) provide a large specific surface area. Thus, their significantly reduced volume provides an advantage compared to the conventional gas–liquid contactor. In this study, the selective removal efficiency of flue gas, in which sulfur oxide (SO2) and carbon dioxide (CO2) coexist, was measured using a polypropylene (PP) HFMC with such advantages. To increase the selective removal efficiency of SO2, experiments were conducted using various alkaline absorbents. As a result, with 0.05 M ammonia solution, the removal efficiency of 95% or more was exhibited with continuous operation for 100 h or more. We confirmed that the absorbent saturated by the once-through mode was aqueous ammonium sulfate ((NH4)2SO4) solution and could be used as a fertilizer without additional processing.

Experimental Studies on CO2 Absorption in Immersed Hollow Fiber Membrane Contactor

2012 ◽  
Vol 209-211 ◽  
pp. 1571-1575 ◽  
Author(s):  
Xiao Na Wu ◽  
Liang Wang ◽  
Zhao Hui Zhang ◽  
Wen Yang Li ◽  
Xing Fei Guo
Keyword(s):  
Removal Efficiency ◽  
Hollow Fiber ◽  
Flue Gas ◽  
Polyvinylidene Fluoride ◽  
Hollow Fiber Membrane ◽  
Experimental Studies ◽  
Operating Mode ◽  
Membrane Performance ◽  
Membrane Flux ◽  
Absorption Performance

Carbon dioxide (CO2) absorption performance from flue gas was investigated using monoethanolamine (MEA) solution in porous hydrophobic polyvinylidene fluoride (PVDF) hollow fiber membranes contactor. The influence of operating parameters on CO2 removal efficiency and flux were studied in the immersion operating mode. The experimental results indicated that the CO2 removal efficiency and flux decreased with the increase of flue gas load and carbonization degrees, but the increase of the absorbent concentration and temperature promoted membrane performance of CO2 capture. An increase of 84 m3•m-2•h-1 in the flue gas load resulted in a 68% decrease in the removal efficiency. Absorbent carbonation degree increased to 0.45 mol CO2•mol-1MEA led to the decrease of active ingredient amounts in the absorption solution, and the corresponding removal efficiency and membrane flux dropped by 50% of the initial amounts, respectively. The increase of concentration and temperature of absorbent also benefited membrane absorption performance of CO2 absorption, so that the concentration and temperature of the solvent increased lead to the CO2 removal efficiency and flux increased.

Improvement of CO2 Separation Performance by Blended Aqueous Solutions of DEA+AMP in Hollow Fiber Membrane Contactor (HFMC)

2012 ◽  
Vol 512-515 ◽  
pp. 2308-2316 ◽  
Author(s):  
Zhen Wang ◽  
Meng Xiang Fang ◽  
Shui Ping Yan ◽  
Yi Li Pang ◽  
Zhong Yang Luo
Keyword(s):  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Co2 Flux ◽  
Positive Influence ◽  
Separation Performance ◽  
Co2 Absorption ◽  
Membrane Contactor ◽  
Fiber Membrane ◽  
High Concentration ◽  
Carbon Dioxide Co2

Absorption of carbon dioxide (CO2) by blended diethanolamine (DEA) + 2-amino-2- methyl-1-propanol (AMP) and single DEA solvents were compared using hollow fiber membrane contactor (HFMC). Experimental results showed AMP additive has positive influence to improve CO2 absorption flux and the optimum AMP/DEA mass concentration ratio is between 0.2 and 0.4. Decreasing gas liquid ratio could greatly promote CO2 absorption, and operating temperature has weak effect on CO2 flux. Besides, large CO2 flux can be achieved with high concentration of DEA+0.2AMP solution due to the decrease of liquid phase resistance to mass transfer, but the optimal DEA concentration was recommended to be about 15% for DEA+0.2AMP solution considering the costs of amines in HFMC.

Experimental study on the separation of CO2 from flue gas using hollow fiber membrane contactors without wetting

2007 ◽  
Vol 88 (5) ◽  
pp. 501-511 ◽  
Author(s):  
Shui-ping Yan ◽  
Meng-Xiang Fang ◽  
Wei-Feng Zhang ◽  
Shu-Yuan Wang ◽  
Zhi-Kang Xu ◽  
...  
Keyword(s):  
Experimental Study ◽  
Hollow Fiber ◽  
Flue Gas ◽  
Hollow Fiber Membrane ◽  
Fiber Membrane ◽  
Separation Of Co2 ◽  
Membrane Contactors

Removal of nitric oxide from simulated flue gas via denitrification in a hollow-fiber membrane bioreactor

2013 ◽  
Vol 25 (11) ◽  
pp. 2239-2246 ◽  
Author(s):  
Xinyu Zhang ◽  
Ruofei Jin ◽  
Guangfei Liu ◽  
Xiyang Dong ◽  
Jiti Zhou ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Hollow Fiber ◽  
Flue Gas ◽  
Membrane Bioreactor ◽  
Hollow Fiber Membrane ◽  
Fiber Membrane ◽  
Hollow Fiber Membrane Bioreactor

scholarly journals Optimization of CO2Absorption Characteristic under the Influence of SO2in Flue Gas by Hollow Fiber Membrane Contactor

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Ziyi Qu ◽  
Li Zhang ◽  
Yunfei Yan ◽  
Shunxiang Ju
Keyword(s):  
Flow Rate ◽  
Hollow Fiber ◽  
Flue Gas ◽  
Gas Flow ◽  
Hollow Fiber Membrane ◽  
Flow Rate Ratio ◽  
Absorption Characteristic ◽  
Membrane Contactor ◽  
Gas Flow Rate ◽  
Fiber Membrane

Hollow fiber membrane contactor is a new, highly efficient, and the most promising technology for CO2absorption in flue gas. There is still SO2that exists in the flue gas after desulfurization tower of power plant. This paper studied the influence of SO2on CO2absorption characteristic in flue gas by hollow fiber membrane contactor with absorbent of EDA, EDA + MEA (0.6 : 0.4), and EDA + MEA + PZ (0.4 : 0.4 : 0.2). The influences of SO2concentration, cycle absorption and desorption characteristic of absorbent, absorbent concentration, and liquid-gas flow rate ratio are studied to analyze the influence of SO2on CO2absorption characteristic. The appropriate absorbent composition ratio and appropriate parameter range that can inhibit the influence of SO2are proposed by studying the hybrid sorbent with activating agent, appropriate absorbent concentration, and ratio of liquid-gas flow rate. Among the three kinds of absorbents, EDA + MEA + PZ (0.4 : 0.4 : 0.2) had the best tolerance ability to SO2and the highest efficiency. With comprehensive consideration of CO2removal efficiency and operating cost, under the condition of 1000 ppm SO2, the appropriate concentration and liquid-gas flow rate ratio of EDA, EDA + MEA, and EDA + MEA + PZ are proposed.

Fabrication and characterization of robust zirconia-kaolin hollow fiber membrane: Alkaline dissolution study in ammonia solution

2021 ◽  
Author(s):  
Mohammad Arif Budiman Pauzan ◽  
Siti Khadijah Hubadillah ◽  
Mohd Hafiz Dzarfan Othman ◽  
Nurul Jannah Ismail ◽  
Mohd Hafiz Puteh ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Ammonia Solution ◽  
Fiber Membrane ◽  
Dissolution Study ◽  
Alkaline Dissolution ◽  
Fabrication And Characterization

Experimental Study on Absorbing CO2 from Coal-Fired Flue Gas

2012 ◽  
Vol 616-618 ◽  
pp. 1546-1549
Author(s):  
Wei Feng Zhang ◽  
Jian Shao
Keyword(s):  
Experimental Study ◽  
Hollow Fiber ◽  
Flue Gas ◽  
Hollow Fiber Membrane ◽  
Membrane Contactor ◽  
Mixed Solution ◽  
Fiber Membrane ◽  
Absorption Effect ◽  
Low Concentrations ◽  
Better Than

A small hollow-fiber membrane contactor system was used to test the absorption and desorption CO2 using mixed absorption solution of SG/PG and TEA. The results showed that absorption effect of SG was better than PG under low concentrations, but their desorption was the opposite. With the increase of concentration, the absorption effect of SG tended to weak, while the desorption was enhanced. And, PG was contrary. The absorption effect of mixed solution(SG+TEA, PG+TEA) was excellent when adding small amount of TEA. And, the absorption effect of TEA-SG mixed solution was amazing under the low concentration of SG. With the concentration of mixed solution increased, the auxo-action of TEA weakened. Instead, TEA played a active effect on promoting the absorption of TEA+PG mixture with the increasing of concentration. The hybrid experimental results shown that 3mol/L PG+0.1 mol/L TEA mixture absorption solution was best in absorption experiments, and 1mol/L PG+0.2 mol/L TEA mixture absorption solution was best in desorption experiments.

Property and Influence of Membrane on the Absorption Efficiency of Sulfur Dioxide from Flue Gas

2009 ◽  
Vol 610-613 ◽  
pp. 114-119
Author(s):  
Juan Qin Xue ◽  
Yu Jie Wang ◽  
Kong Fen Wang ◽  
Zhou Zhou
Keyword(s):  
Sulfur Dioxide ◽  
Hollow Fiber ◽  
Liquid Membrane ◽  
Hollow Fiber Membrane ◽  
Dynamic Contact Angle ◽  
Dynamic Contact ◽  
Absorption Efficiency ◽  
Absorption Capacity ◽  
Fiber Membrane ◽  
Solid Liquid Interface

The method of wettability of solid-liquid interface is used to examine the differences of the liquid membranes formed by hydrophilic or hydrophobic membranes with different size and different materials, the influence of the characteristics of membrane modules in the process of desulfurization is studied. The method of accelerating the renewing rate of liquid membrane is proposed. The results show that the hydrophobic liquid membrane leads to higher renewing rate and absorption efficiency of sulfur dioxide and the hollow fiber membrane of polypropylene has higher adsorption efficiency. The dynamic contact angle of the same hollow fiber membrane is increasing with the number of the fibers leading to the increase of the diffusing resistance of liquid between the fibers. In order to accelerate the renewing rate of the liquid membrane, the concentration of the medium should be decreased under the condition of high absorption capacity.

A high-flux polyimide hollow fiber membrane to minimize footprint and energy penalty for CO2 recovery from flue gas

2012 ◽  
Vol 423-424 ◽  
pp. 302-313 ◽  
Author(s):  
Ryan P. Lively ◽  
Michelle E. Dose ◽  
Liren Xu ◽  
Justin T. Vaughn ◽  
J.R. Johnson ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Flue Gas ◽  
Hollow Fiber Membrane ◽  
High Flux ◽  
Fiber Membrane ◽  
Energy Penalty ◽  
Co2 Recovery
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