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Study of Waste MDEA Characteristics through Neutralization with Caustic

This report aims to study the by-product formation and potential harm it may cause to the MDEA at different strengths of amine, to determine the MDEA characteristics after caustic is added and provide qualitative measure of HSS contamination and to determine the feasibility of adding caustic to neut...

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Main Author: Atikah Bt. Mohd. Jehan Zaib, Atikah
Format: Final Year Project
Language:English
Published: UNIVERSITI TEKNOLOGI PETRONAS 2010
Subjects:
TP Chemical technology
Online Access:http://utpedia.utp.edu.my/375/1/Final_Report_FINAL.pdf
http://utpedia.utp.edu.my/375/
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spelling my-utp-utpedia.3752017-01-25T09:43:09Z http://utpedia.utp.edu.my/375/ Study of Waste MDEA Characteristics through Neutralization with Caustic Atikah Bt. Mohd. Jehan Zaib, Atikah TP Chemical technology This report aims to study the by-product formation and potential harm it may cause to the MDEA at different strengths of amine, to determine the MDEA characteristics after caustic is added and provide qualitative measure of HSS contamination and to determine the feasibility of adding caustic to neutralise MDEA is applicable to Amines system in the refinery. Amines is a class of organic compounds of nitrogen that may be considered as derivation of ammonia (NH3) by replacing one or more of the hydrogen atoms with alkyl groups. The amine is primary (MEA), secondary (DEA), or tertiary (MDEA) depending on whether one, two, or three of the hydrogen atoms are replaced. MDEA has become more and more preferable for amine gas sweetening due to its stability. From the experiments conducted, it is clear that neutralization with KOH is favorable. This is because neutralization changes the corrosive HSS which is formate and acetate to HSAS which is less corrosive to an amine system. From the TAN obtained, KOH effectively neutralized the high amount of acid in the solution. The byproduct (HSAS) which are potassium acetate and potassium formate produced in this neutralization is more harmless than the HSS (formate and acetate) before neutralization. MDEA characteristics and basicity is also retained after neutralization. KOH addition to neutralize HSS is therefore suitable as a short term measure of purging the amine system. It is recommended to be added after the amine has gone through the regenerator to prevent the KOH from neutralizing H2S instead. The MDEA concentration that is above 30% and less than 50% seems to be the best concentration against contaminants in the system. Neutralization with KOH is deemed feasible for application in an amine gas treating plant. It is recommended to investigate MDEA at other strengths (wt %) such as 25, 35, 45 and 55% as well. UNIVERSITI TEKNOLOGI PETRONAS 2010 Final Year Project NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/375/1/Final_Report_FINAL.pdf Atikah Bt. Mohd. Jehan Zaib, Atikah (2010) Study of Waste MDEA Characteristics through Neutralization with Caustic. UNIVERSITI TEKNOLOGI PETRONAS, Sri Iskandar,Tronoh,Perak. (Unpublished)
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Electronic and Digitized Intellectual Asset
url_provider http://utpedia.utp.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Atikah Bt. Mohd. Jehan Zaib, Atikah
Study of Waste MDEA Characteristics through Neutralization with Caustic
description This report aims to study the by-product formation and potential harm it may cause to the MDEA at different strengths of amine, to determine the MDEA characteristics after caustic is added and provide qualitative measure of HSS contamination and to determine the feasibility of adding caustic to neutralise MDEA is applicable to Amines system in the refinery. Amines is a class of organic compounds of nitrogen that may be considered as derivation of ammonia (NH3) by replacing one or more of the hydrogen atoms with alkyl groups. The amine is primary (MEA), secondary (DEA), or tertiary (MDEA) depending on whether one, two, or three of the hydrogen atoms are replaced. MDEA has become more and more preferable for amine gas sweetening due to its stability. From the experiments conducted, it is clear that neutralization with KOH is favorable. This is because neutralization changes the corrosive HSS which is formate and acetate to HSAS which is less corrosive to an amine system. From the TAN obtained, KOH effectively neutralized the high amount of acid in the solution. The byproduct (HSAS) which are potassium acetate and potassium formate produced in this neutralization is more harmless than the HSS (formate and acetate) before neutralization. MDEA characteristics and basicity is also retained after neutralization. KOH addition to neutralize HSS is therefore suitable as a short term measure of purging the amine system. It is recommended to be added after the amine has gone through the regenerator to prevent the KOH from neutralizing H2S instead. The MDEA concentration that is above 30% and less than 50% seems to be the best concentration against contaminants in the system. Neutralization with KOH is deemed feasible for application in an amine gas treating plant. It is recommended to investigate MDEA at other strengths (wt %) such as 25, 35, 45 and 55% as well.
format Final Year Project
author Atikah Bt. Mohd. Jehan Zaib, Atikah
author_facet Atikah Bt. Mohd. Jehan Zaib, Atikah
author_sort Atikah Bt. Mohd. Jehan Zaib, Atikah
title Study of Waste MDEA Characteristics through Neutralization with Caustic
title_short Study of Waste MDEA Characteristics through Neutralization with Caustic
title_full Study of Waste MDEA Characteristics through Neutralization with Caustic
title_fullStr Study of Waste MDEA Characteristics through Neutralization with Caustic
title_full_unstemmed Study of Waste MDEA Characteristics through Neutralization with Caustic
title_sort study of waste mdea characteristics through neutralization with caustic
publisher UNIVERSITI TEKNOLOGI PETRONAS
publishDate 2010
url http://utpedia.utp.edu.my/375/1/Final_Report_FINAL.pdf
http://utpedia.utp.edu.my/375/
_version_ 1739830650953793536
score 13.211869

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