Stripper model for co2 removal from iron ore reduction unit using amine scrubbing process

Iron and steel production is a highly energy intensive process which has been reported to produce about 10% of worldwide CO2 from fossil fuel. Thus, it has become a potential industry for CO2 removal process. High energy consumption of amine scrubbing has caused the challenge for the large scale app...

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Main Author:	Peng, Hoe Hoi
Format:	Undergraduates Project Papers
Language:	English
Published:	2014
Subjects:	TD Environmental technology. Sanitary engineering
Online Access:	http://umpir.ump.edu.my/id/eprint/9046/ http://umpir.ump.edu.my/id/eprint/9046/ http://umpir.ump.edu.my/id/eprint/9046/1/CD8551%20%40%2067.pdf

id	ump-9046
recordtype	eprints
spelling	ump-90462015-10-16T00:05:56Z http://umpir.ump.edu.my/id/eprint/9046/ Stripper model for co2 removal from iron ore reduction unit using amine scrubbing process Peng, Hoe Hoi TD Environmental technology. Sanitary engineering Iron and steel production is a highly energy intensive process which has been reported to produce about 10% of worldwide CO2 from fossil fuel. Thus, it has become a potential industry for CO2 removal process. High energy consumption of amine scrubbing has caused the challenge for the large scale application. Even though recent studies have been done to reduce the energy consumption, there are lacking of focus on the optimization of stripper operating conditions. Thus, the objective of this research is to investigate the relationships of the stripper operating parameters on the reboiler heat duty and CO2 removal percentage in the stripper. The modeling was done by using rate-based model in Aspen Plus with “MEA Property Insert” which described a MEA-H2O-CO2 system thermodynamically with electrolyte-NRTL model. The column specifications were adapted from a pilot plant in University of Texas, Austin and the flue gas flow and compositions were adapted from Arasto et al. (2012). From the results, it showed that the increase in stripper with higher MEA concentration had reduced the reboiler duty up to 20 % and higher rich solvent temperature were able to reduce the reboiler heat duty. Besides that, the increase of stripper pressure had increased CO2 removal efficiency in the stripper yet the CO2 removal percentage was remained constant with the increase in rich solvent temperature. Lower rich solvent loadings with constant lean solvent loadings, molar flow rate of CO2 exiting the stripper and mass flow rate of MEA solvent enabled the reduction in reboiler heat duty. Even though high stripper temperature enables better performance, the stripper temperature should be maintained below 125 °C to avoid MEA degradation. Besides that, it is suggested to use lower lean solvent flow rate so that the output changes can be observed easily. Based on the results, it can be concluded that the hypotheses were accepted. The findings of this study are useful as the reference for future amine scrubbing application on the iron ore reduction unit and to reduce the energy requirement of the process 2014-01 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/9046/1/CD8551%20%40%2067.pdf Peng, Hoe Hoi (2014) Stripper model for co2 removal from iron ore reduction unit using amine scrubbing process. Faculty Of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:84830&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TD Environmental technology. Sanitary engineering
spellingShingle	TD Environmental technology. Sanitary engineering Peng, Hoe Hoi Stripper model for co2 removal from iron ore reduction unit using amine scrubbing process
description	Iron and steel production is a highly energy intensive process which has been reported to produce about 10% of worldwide CO2 from fossil fuel. Thus, it has become a potential industry for CO2 removal process. High energy consumption of amine scrubbing has caused the challenge for the large scale application. Even though recent studies have been done to reduce the energy consumption, there are lacking of focus on the optimization of stripper operating conditions. Thus, the objective of this research is to investigate the relationships of the stripper operating parameters on the reboiler heat duty and CO2 removal percentage in the stripper. The modeling was done by using rate-based model in Aspen Plus with “MEA Property Insert” which described a MEA-H2O-CO2 system thermodynamically with electrolyte-NRTL model. The column specifications were adapted from a pilot plant in University of Texas, Austin and the flue gas flow and compositions were adapted from Arasto et al. (2012). From the results, it showed that the increase in stripper with higher MEA concentration had reduced the reboiler duty up to 20 % and higher rich solvent temperature were able to reduce the reboiler heat duty. Besides that, the increase of stripper pressure had increased CO2 removal efficiency in the stripper yet the CO2 removal percentage was remained constant with the increase in rich solvent temperature. Lower rich solvent loadings with constant lean solvent loadings, molar flow rate of CO2 exiting the stripper and mass flow rate of MEA solvent enabled the reduction in reboiler heat duty. Even though high stripper temperature enables better performance, the stripper temperature should be maintained below 125 °C to avoid MEA degradation. Besides that, it is suggested to use lower lean solvent flow rate so that the output changes can be observed easily. Based on the results, it can be concluded that the hypotheses were accepted. The findings of this study are useful as the reference for future amine scrubbing application on the iron ore reduction unit and to reduce the energy requirement of the process
format	Undergraduates Project Papers
author	Peng, Hoe Hoi
author_facet	Peng, Hoe Hoi
author_sort	Peng, Hoe Hoi
title	Stripper model for co2 removal from iron ore reduction unit using amine scrubbing process
title_short	Stripper model for co2 removal from iron ore reduction unit using amine scrubbing process
title_full	Stripper model for co2 removal from iron ore reduction unit using amine scrubbing process
title_fullStr	Stripper model for co2 removal from iron ore reduction unit using amine scrubbing process
title_full_unstemmed	Stripper model for co2 removal from iron ore reduction unit using amine scrubbing process
title_sort	stripper model for co2 removal from iron ore reduction unit using amine scrubbing process
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/9046/ http://umpir.ump.edu.my/id/eprint/9046/ http://umpir.ump.edu.my/id/eprint/9046/1/CD8551%20%40%2067.pdf
first_indexed	2023-09-18T22:07:11Z
last_indexed	2023-09-18T22:07:11Z
_version_	1777414786722562048

Stripper model for co2 removal from iron ore reduction unit using amine scrubbing process

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