title: Absorption of sulfur dioxide from simulated flue gas by polyethyleneimine-phosphoric acid solution.
abstract: Clean fuel technologies have been widely developed in current society because fuel combustion can directly bring about the emission of hazardous gasses such as SO2. Flue gas desulfurization by polyethyleneimine (PEI)-phosphoric acid solution is an efficient desulfurization method. In this research, the PEI and the additive H3PO4 were used as absorption solution. SO2 was absorbed by the system and desorbed from the loaded solution. The cycle operation was also analyzed. Some technology conditions such as the concentration of PEI, the temperature, the gas flow rate, the concentration of SO2 and the pH value were experimentally researched. With the optimized process, the absorption efficiency of this system could reach 98% and the desorption efficiency was over 60%, showing good absorption/desorption capability. With this efficient approach, the present study may open a new window for developing high-performance absorbents which can make SO2 be well desorbed from the loaded solution and better reused in the flue gas desulfurization.
authors.affiliation: a College of Chemical Engineering , North China University of Science and Technology , Tangshan , China.
authors.forename: Wen
authors.initials: W
authors.lastname: Bo
authors.affiliation: a College of Chemical Engineering , North China University of Science and Technology , Tangshan , China.
authors.forename: Hongxia
authors.initials: H
authors.lastname: Li
authors.affiliation: b College of Life Sciences , North China University of Science and Technology , Tangshan , China.
authors.forename: Junjie
authors.initials: J
authors.lastname: Zhang
authors.affiliation: a College of Chemical Engineering , North China University of Science and Technology , Tangshan , China.
authors.forename: Xiangjia
authors.initials: X
authors.lastname: Song
authors.affiliation: a College of Chemical Engineering , North China University of Science and Technology , Tangshan , China.
authors.forename: Jinshan
authors.initials: J
authors.lastname: Hu
authors.affiliation: a College of Chemical Engineering , North China University of Science and Technology , Tangshan , China.
authors.forename: Ce
authors.initials: C
authors.lastname: Liu
mesh_terms: D000393:Air Pollutants / Q000737:chemistry*; D000397:Air Pollution / Q000517:prevention & control; D006863:Hydrogen-Ion Concentration; D010756:Phosphoric Acids / Q000737:chemistry*; D011094:Polyethyleneimine / Q000737:chemistry*; D011210:Power Plants; D013458:Sulfur Dioxide / Q000737:chemistry*; D013696:Temperature
chemical_list: D000393:Air Pollutants; D010756:Phosphoric Acids; D013458:Sulfur Dioxide; D011094:Polyethyleneimine
keywords: Polyethyleneimine; adsorption; desorption; desulfurization; flue gas