scholarly journals Multiobjective Evaluation of Amine-Based Absorbents for SO2 Capture Process Using the pKa Mathematical Model

ACS Omega ◽  
2022 ◽  
Author(s):  
Dongliang Wang ◽  
Jiangpeng Xie ◽  
Guixian Li ◽  
Wenliang Meng ◽  
Jingwei Li ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Capture Process ◽  
So2 Capture

scholarly journals Investigation on Gas-Soot Flow Distribution Characteristic of Soot Capture Process in the Wall-Flow Diesel Particulate Filter

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Jianyu Li ◽  
Chunping Lu ◽  
Dongli Tan
Keyword(s):  
Mathematical Model ◽  
Diesel Particulate Filter ◽  
Flow Distribution ◽  
Conservation Equation ◽  
Particulate Filter ◽  
Phase Flow ◽  
Distribution Characteristics ◽  
Two Phase ◽  
Capture Process ◽  
Diesel Particulate

In order to investigate the distribution characteristics of gas-particle two-phase flow in the diesel particulate filter in the capture process, a mathematical model of gas-particle two-phase flow for inside-and-outside filter had been established in the capture process according to the mass conservation equation, momentum conservation equation, and k-ε turbulence equation. The model verification was carried out with the experimental and simulated of flow distribution characteristics of gas-particle two-phase. The obtained results showed that the static pressure gradient along the radial distribution was greater at the inlet of the filter in capture process in the diesel particulate filter, which could easily lead to causing eventual fatigue damage due to stress concentration in the front-end of filter; moreover, the weaker the vortex strength of gas-particle formed in expansion pipe was, the better uniformity of flow velocity and soot concentration distribution were. Therefore, the established mathematical model can be used for predicting gas-particle flow velocity distribution in the diesel particulate filter.

scholarly journals An Update on the Development of the CSIRO's CS-Cap Combined CO2 and SO2 Capture Process

2017 ◽  
Vol 114 ◽  
pp. 1721-1728 ◽  
Author(s):  
Pauline Pearson ◽  
Justin Moscatelli ◽  
Bharti Garg ◽  
Ashleigh Cousins ◽  
Erik Meuleman ◽  
...  
Keyword(s):  
Capture Process ◽  
So2 Capture

scholarly journals Quantum Chemistry Insight into the Interactions Between Deep Eutectic Solvents and SO2

Molecules ◽  
2019 ◽  
Vol 24 (16) ◽  
pp. 2963 ◽  
Author(s):  
Mert Atilhan ◽  
Tausif Altamash ◽  
Santiago Aparicio
Keyword(s):  
Density Functional ◽  
Rational Design ◽  
Molecular Level ◽  
Research Work ◽  
Deep Eutectic Solvents ◽  
Systematic Research ◽  
Capture Process ◽  
Interaction Sites ◽  
So2 Capture ◽  
Reduced Density

A systematic research work on the rational design of task specific Deep Eutectic Solvents (DES) has been carried out via density functional theory (DFT) in order to increase knowledge on the key interaction parameters related to efficient SO2 capture by DES at a molecular level. A total of 11 different DES structures, for which high SO2 affinity and solubility is expected, have been selected in this work. SO2 interactions in selected DES were investigated in detail through DFT simulations and this work has generated a valuable set of information about required factors at the molecular level to provide high SO2 solubility in DES, which is crucial for enhancing the current efficiency of the SO2 capture process and replacing the current state of the art with environmentally friendly solvents and eventually implementing these materials in the chemical industry. Results that were obtained from DFT calculations were used to deduce the details of the type and the intensity of the interaction between DES and SO2 molecules at various interaction sites as well as to quantify short-range interactions by using various methods such as quantum theory of atoms in a molecule (QTAIM), electrostatic potentials (ESP) and reduced density gradients (RDG). Systematic research on the molecular interaction characterization between DES structures and SO2 molecule increases our knowledge on the rational design of task-specific DES.

From the Oort cloud to Halley-type comets

1999 ◽  
Vol 173 ◽  
pp. 327-338 ◽  
Author(s):  
J.A. Fernández ◽  
T. Gallardo
Keyword(s):  
Total Population ◽  
Complex Function ◽  
Dynamical Evolution ◽  
Oort Cloud ◽  
Capture Process ◽  
Influx Rate ◽  
Short Period ◽  
Dynamical Properties ◽  
Orbital Periods ◽  
Probability Of Capture

AbstractThe Oort cloud probably is the source of Halley-type (HT) comets and perhaps of some Jupiter-family (JF) comets. The process of capture of Oort cloud comets into HT comets by planetary perturbations and its efficiency are very important problems in comet ary dynamics. A small fraction of comets coming from the Oort cloud − of about 10−2− are found to become HT comets (orbital periods < 200 yr). The steady-state population of HT comets is a complex function of the influx rate of new comets, the probability of capture and their physical lifetimes. From the discovery rate of active HT comets, their total population can be estimated to be of a few hundreds for perihelion distancesq <2 AU. Randomly-oriented LP comets captured into short-period orbits (orbital periods < 20 yr) show dynamical properties that do not match the observed properties of JF comets, in particular the distribution of their orbital inclinations, so Oort cloud comets can be ruled out as a suitable source for most JF comets. The scope of this presentation is to review the capture process of new comets into HT and short-period orbits, including the possibility that some of them may become sungrazers during their dynamical evolution.

Mathematical model of hit phenomena and its application to movie advertisement

2008 ◽  
Author(s):  
Ishii Akira ◽  
Yoshida Narihiko ◽  
Hayashi Takafumi ◽  
Umemura Sanae ◽  
Nakagawa Takeshi
Keyword(s):  
Mathematical Model
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