scholarly journals Study on apparent absorption rate of H2S in MDEA-PZ aqueous solutions at 313.2K

2018 ◽  
Vol 199 ◽  
pp. 032096
Author(s):  
Y X Chu ◽  
C Li ◽  
D Fu
Keyword(s):  
Aqueous Solutions ◽  
Absorption Rate ◽  
Apparent Absorption

scholarly journals CO2 Capture by Absorption in Activated Aqueous Solutions of N,N-Diethylethanoloamine

2017 ◽  
Vol 24 (2) ◽  
pp. 239-248 ◽  
Author(s):  
Ewelina Kruszczak ◽  
Hanna Kierzkowska-Pawlak
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Co2 Capture ◽  
Tertiary Amine ◽  
Absorption Rate ◽  
Absorption Process ◽  
Promising Technique ◽  
Gas Streams ◽  
Hindered Amines ◽  
Amine Solutions

Abstract The CO2 absorption process using aqueous amine solutions has been the most promising technique used for the removal of CO2 from gas streams in energy sector. In recent years, many researchers tested solutions which are composed of several compounds: a slow reacting tertiary amine- and a fast amine acting as an activator. In this paper, the CO2 absorption rate in an aqueous solution of N,N-diethylethanoloamine (DEEA) and activated solutions DEEA is investigated experimentally. The activators considered are sterically hindered amines: 2-amino-2-methyl-1-propanol (AMP), 2-amino-2-methyl-1,3-propanediol (AMPD) and N-methyl-1,3-propanediamine (MAPA) from the group of polyamines. The experiments were conducted over the temperature range of 303-333 K and the total amine concentration of 2 M. From the CO2 absorption experiments into mixed aqueous solutions of DEEA and MAPA, it was found that the addition of small amounts of MAPA into aqueous DEEA solutions has a significant effect on the enhancement of the CO2 absorption rate. The application of hindered amines: AMP or AMP as activators resulted in a marginally improvement of the absorption rate of CO2.

Studies on CO2 Absorption in Simulating Flue Gas

2012 ◽  
Vol 550-553 ◽  
pp. 961-965
Author(s):  
Jian Yi Lü ◽  
Xiao Bin Shi
Keyword(s):  
Aqueous Solutions ◽  
Flue Gas ◽  
Absorption Rate ◽  
Absorption Capacity

The absorption of CO2 with ethanolamine (MEA) was studied in this paper, and proper additives such as piperazine (PZ) and N- methyldiethanolamine (MDEA) were mixed in different proportion to the main reacting substance. The performance of absorbents with different formula were studied by analyzing and comparing the characteristic indexes of absorbents, including absorption rate, regeneration temperature, absorption capacity of CO2, and regeneration degree. The results have been shown that aqueous solutions added PZ could increase absorption rate and improve absorption capacity than that of MDEA, and Aqueous solutions added MDEA could decrease regeneration energy and improve regeneration degree than that of PZ. The formular of 16%MEA+4%PZ could be the most suitable absorbent of CO2 in the study.

Experiments on the Kinetics and Activation Mechanism of CO2 Loaded MEA-MDEA Aqueous Solutions

2012 ◽  
Vol 610-613 ◽  
pp. 1213-1217 ◽  
Author(s):  
Dong Fu ◽  
Lin Wei ◽  
Xiang Fei
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Mass Fraction ◽  
Absorption Rate ◽  
Normal Pressure ◽  
Activation Mechanism

The solubility and absorption rate of CO2 in monoethanolamine (MEA) promoted N-methyldiethanolamine (MDEA) aqueous solution were measured at normal pressure with temperatures ranging from 303.15-323.15K. The temperature and the mass fraction dependences of the solubility of CO2 and CO2 loading were determined. The influence of the mass fraction of MEA on the absorption rate of CO2 was illustrated.

Experiments on the Kinetics and Solubility of CO2 in AMP-PZ Aqueous Solutions

2013 ◽  
Vol 411-414 ◽  
pp. 2989-2992
Author(s):  
Dong Fu ◽  
Hong Mei Wang ◽  
Lei Xia Du
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Mass Fraction ◽  
Absorption Rate ◽  
Normal Pressure

The solubility and saturated loading of CO2in piperazine (PZ) promoted 2-amino-2-methyl-1-propanol (AMP) aqueous solution were measured at normal pressure with temperatures ranging from 293.15K to 323.15K. The temperature and the mass fraction dependences of the solubility and saturated loading of CO2were determined. The influence of the mass fraction of PZ on the absorption rate of CO2was illustrated.

scholarly journals Carbon Dioxide Absorption into Aqueous Blends of N-Methyldiethanolamine and 2-Ethylaminoethanol

2012 ◽  
Vol 33 (4) ◽  
pp. 547-561 ◽  
Author(s):  
Władysław Moniuk ◽  
Ryszard Pohorecki ◽  
Piotr Machniewski
Keyword(s):  
Carbon Dioxide ◽  
Mathematical Model ◽  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Absorption Rate ◽  
Elevated Temperatures ◽  
Carbon Dioxide Absorption ◽  
Absorption Column ◽  
New Process

Measurements of the absorption rate of carbon dioxide into aqueous solutions of N-methyldiethanoloamine (MDEA) and 2-ethylaminoethanol (EAE) have been carried out. On this basis a mathematical model of the performance of an absorption column operated with aqueous solution of a blend of the above amines at elevated temperatures and pressures have been proposed. The results of simulations obtained by means of this model are described. The work is a part of a wider program, aimed at the development of a new process.

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