Solubility and Henry&apos;s law constant of sulfur dioxide in aqueous   polyethylene glycol 300 solution at different temperatures and pressures

doi:10.1016/j.fluid.2013.03.006

CORC > 北京大学 > 化学与分子工程学院

	Solubility and Henry's law constant of sulfur dioxide in aqueous polyethylene glycol 300 solution at different temperatures and pressures
	Zhang, Na ; Zhang, Jianbin ; Zhang, Yongfeng ; Bai, Jie ; Wei, Xionghui
刊名	流相平衡
	2013
关键词	Gas-liquid equilibrium Polyethylene glycol (PEG) 300 Sulfur dioxide Absorption Henry&apos FLUE-GAS DESULFURIZATION LIQUID-EQUILIBRIUM DATA ELECTROLYTE SOLUTIONS ABSORPTION PROCESSES ETHYLENE-GLYCOL PLUS WATER 298.15 K SYSTEM SORBENT ACID s law constant
DOI	10.1016/j.fluid.2013.03.006
英文摘要	In this work, isothermal gas-liquid equilibrium (GLE) data are reported for the system of SO2 + N-2 + polyethylene glycol (PEG) 300 + water (H2O) at five different reaction temperatures (from 298.15 to 318.15K) and different pressures (from 110.34 to 142.03 kPa) with SO2 partial pressures in the range of 0 to 180 Pa. Measurements were carried out by a saturation method using a glass absorption apparatus, which was controlled at constant temperatures by a thermostatic circulation bath with a Beckmann thermometer. The GLE data were obtained with uncertainties within +/- 0.02 K for temperature, +/- 0.1 kPa for total pressures, and +/- 0.05 for SO2 concentration in the gas phase and +/- 0.003 for SO2 concentration in the liquid phase. The measurements showed that the solubility of dilute SO2 in the system of PEG (1) + water (2) increased the with increasing PEG concentration in the mass fraction range of w(1) = (0.50-1.00). The solubility of SO2 in the system of PEG (1) + water (2) presented an extreme minimum at the mass fraction of w(1) = 0.50 of 152.3 g m(-3) when SO2 in the gas phase was designed at y(SO2) = 5 x 10(-4). The solubility of dilute SO2 in the system of PEG (1) + water (2) increased with decreasing PEG concentration in the mass fraction range of w(1) = (0.05-0.50). The solubility of SO2 in the system of PEG (1) + water (2) presented an extreme minimum at the mass fraction of w(1) = 0.05 of 270.7 gm(-3) when SO2 in the gas phase was designated at y(SO2) = 5 x 10(-4). Henry's law constants were fitted with a dynamic system based on the GLE data. Using the solubility data, the partial molar thermodynamic functions of solution, enthalpy and entropy, were calculated. Conclusions drawn from this work may be used to provide important GLE data for the design and operation of the absorption and desorption processes of PEG solutions in flue gas desulfurization. (C) 2013 Elsevier B.V. All rights reserved.; Thermodynamics; Chemistry, Physical; Engineering, Chemical; SCI(E); EI; 4; ARTICLE; 9-16; 348
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/223373]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zhang, Na,Zhang, Jianbin,Zhang, Yongfeng,et al. Solubility and Henry's law constant of sulfur dioxide in aqueous polyethylene glycol 300 solution at different temperatures and pressures[J]. 流相平衡,2013.
APA	Zhang, Na,Zhang, Jianbin,Zhang, Yongfeng,Bai, Jie,&Wei, Xionghui.(2013).Solubility and Henry's law constant of sulfur dioxide in aqueous polyethylene glycol 300 solution at different temperatures and pressures.流相平衡.
MLA	Zhang, Na,et al."Solubility and Henry's law constant of sulfur dioxide in aqueous polyethylene glycol 300 solution at different temperatures and pressures".流相平衡 (2013).