The absorption properties of N-(2-hydroxyethyl) morpholine (HEM), morpholine (MP) and N-(2-aminoethyl) morpholine (AEM) for SO 2 were studied using sulfolane (SUL) as solvent in this work. Among these solvent combinations, HEM/SUL shows the best cyclic absorption performance, and the capacity of HEM-SUL-40 (40 …
The absorption kinetics of this study was carried out in a bench scale stirred tank reaction system with a plane gas–liquid interface. The system can be divided into three parts: a flue gas simulation system, an absorption reactor, and a gas sampling and analyzing system as shown in Fig. 1.Flow rates of pure N 2, pure SO 2, and 2075 ppm …
PDF | On Dec 4, 2017, Gonzalo Torreblanca Guerrero and others published PROCESO DE CONCENTRACIÓN DE SO2 POR ABSORCIÓN MEDIANTE LÍQUIDO IÓNICO DESDE UNA FUENTE DILUIDA. | Find, read and cite ...
The absorption of SO 2 from flue gas and its conversion to chemicals is important in the industry. Functional ionic liquids (ILs) have been broadly used to absorb SO 2 in flue gas, but seldom convert it to …
Hydrogen bonding and sulfur bonding play crucial roles in the physical absorption of SO 2 by [TMG] [LAC]. [TMG] + is important for chemical absorption of …
Sulfur K-edge X-ray absorption near-edge structure (XANES) spectra have been recorded and the S (1s) electron excitations evaluated by means of density functional …
The amine-based flue gas desulfurization (FGD) method is a competitive and promising technique to realize SO 2 removal and sulfur recycling from flue gas. To study the steady and transient state behaviors of continuous SO 2 absorption and desorption processes with ethylenediamine-phosphoric acid solution, a rate-based …
2.2. Penetration time definition. To measure the performance of base dechlorinators for HCl removal. Define two performance metrics, HCl removal efficiency η and HCl removal q.. HCl removal efficiency: (1) η = C 0-C t C 0 × 100 % The amount of HCl removed by 1 g of dechlorinator (mg) can be calculated according to the following …
DOI: 10.3303/CET1869021 Corpus ID: 53067483; Simultaneous Absorption of SO 2 and CO 2 from Conventional and Partial Oxy-fuel Cement Plant Flue Gases @article{Laribi2017SimultaneousAO, title={Simultaneous Absorption of SO 2 and CO 2 from Conventional and Partial Oxy-fuel Cement Plant Flue Gases}, author={Sinda Laribi …
2.3.SO 2 absorption and desorption. The absorption capacity of MPSA to SO 2 was determined by the static absorption method using a dual-chamber absorption device (see Fig. S1) and the dynamic absorption method using Thermal Gravimetric Analyzer (TGA) apparatus (see Fig. S2).The static absorption process is very similar to …
Theoretical calculation showed that the high SO2 absorption capacity was mainly due to the strong charge-transfer interaction between SO2 and the anion Cl-. ... {Dezhong Yang and Shaoze Zhang and De‐en Jiang and Sheng Dai}, journal={Physical chemistry chemical physics : PCCP}, year={2018}, volume={20 22}, pages={ 15168 …
In previous research, we have found and reported for the first time that β-alanine aqueous solution could be employed to efficiently separate SO2 from flue gas. However, the performance of most natural amino acids (AAs) on SO2 absorption and their interaction mechanisms are not fully understood. In this work, the performance of 20 …
In the absorption solution, ... The gas flow rate has multiple effects on De-SO2 performances. On the one hand, as the gas flow rate increased the reduced SO2 residence time may lead to the processes of gas–liquid contact and mass-transfer in the scrubber not to be completed [40–42]. Also, it implies that more SO2 molar fraction with …
Maurer investigated the solubility, and the equilibrium concentrations of sulfur dioxide in water, Walcek and Pruppacher studied the atmospherical absorption of SO 2 by clouds and raindrops, while Walcek et al. …
Sulfur dioxide is spelled as Sulphur dioxide in Commonwealth English. This is a pungent-smelling, colorless gas. Talking about its properties, SO2 has a molar mass of 64.066 g/mol. The melting point and boiling points are -72℃, and -10℃ respectively. Now let's move on to the fundamental concepts like structure, molecular geometry ...
Absorption cross sections of SO 2 have been obtained in the 24 000–29 000 cm −1 spectral range (345–420 nm) with a Fourier transform spectrometer at a resolution of 2 cm −1.Pure SO 2 samples were used and measurements were performed at room temperature (298 K) as well as at 318, 338 and 358 K. This is the first time that …
Deep eutectic solvents (DESs) have emerged as promising substitutes for SO2 capture. In this work, an effective preorganization strategy was implemented to design DESs, aiming at improving the SO2 desorption property while ensuring the SO2 absorption capacity in DESs. Several novel DESs with the preorganized multi-imides as hydrogen …
MDEA+DMSO aqueous solutions, made up of N-methyldiethanolamine (MDEA) and dimethyl sulfoxide (DMSO), were explored for the simultaneous absorption of CO2, SO2, and NOx. Experiments in a semibatch absorption–desorption system were carried out to measure the absorption and desorption performance of aqueous …
The absorption of SO 2 from flue gas and its conversion to chemicals is important in the industry. Functional ionic liquids (ILs) have been broadly used to absorb …
The utilization of cheap and renewable materials is an important topic in green chemistry. In this work we studied the absorption of SO 2 by choline chloride (ChCl)– glycerol deep eutectic solvents (DESs) at various temperatures and SO 2 partial pressures, and the molar ratios of ChCl and glycerol ranged from 1 : 4 to 1 : 1. It was demonstrated that the …
In addition, the absorption of low-concentration SO 2 (2000 ppm) in [TMEA][Im] was also tested. Further spectroscopic research and thermodynamic analysis suggested that the high SO 2 uptake by [TMEA][Im] was caused by the synergistic effect of physical and chemical absorption.
High molar absorption attributed to the direct chemical absorption of [TEOA][CA] with SO2 in water. This chemical reaction formed multiple bonds, involving …
The existence of an absorption continuum commencing at 2280 Å has been established and attributed to the dissociation of SO 2 forming SO and a ground‐state oxygen atom. The …
Efficient and reversible absorption of SO2 based on environmentally friendly task-specific deep eutectic solvents (DESs) is highly desired. In this contribution, a series of task-specific DESs of 1-hydroxyethyl-1,4-dimethyl-piperazinium bromide (PPZBr) plus glycerol (Gly) at different molar ratios were designed and prepared. Physical properties …
Notice: Except where noted, spectra from this collection were measured on dispersive instruments, often in carefully selected solvents, and hence may differ in detail from measurements on FTIR instruments or in other chemical environments. More information on the manner in which spectra in this collection were collected can be found here. Notice: …
Five categories of deep eutectic solvents (DES) in SO2 absorption are reviewed. • Structure-properties relationships of DES on desulphurization capacity are studied. • Reaction conditions correlated with the desulphurization capacity are explored. • Energy efficiency, regeneration, and mechanisms of the de-SO2 system are discussed. •
The absorption rate of SO2 from a gas mixture of SO2 and N2 into pure water, HCl, and NaCl solutions has been measured at 25°C in a continuous stirred vessel with an unbroken gas-liquid interface.
The absorption of sulphur dioxide from effluent gases by using aqueous sodium hydroxide solution as a solvent has become established practice in industry where a high degree of purity of the effluent gases must be ensured in a reliable manner. ... Wiley Research DE&I Statement and Publishing Policies; Developing World Access; Help & …
Quantity Value Units Method Reference Comment; Δ f H° gas-296.81 ± 0.20: kJ/mol: Review: Cox, Wagman, et al., 1984: CODATA Review value: Δ f H° gas-296.84: kJ ...
Deep eutectic solvents (DESs) as promising green solvents have been proposed for the removal of SO2 from fuel gases. In this work, an efficient SO2 absorption strategy based on three 1-ethyl-3-methylimidazolium chlorine ([EMIM][Cl])-based DESs, that is, [EMIM][Cl]–ethylene glycol, [EMIM][Cl]–triethylene glycol, and [EMIM][Cl]–acetamide …
