Ammonia-based CO 2 capture parameters optimization and analysis of lean and rich vapor compression processes

Asad Ullah, Mujeeb Iqbal Soomro, Woo-Seung Kim

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

Carbon dioxide (CO 2 ) capture through chemical solvent absorption process is the most favourable and well-proven technique to reduce CO 2 emission. However, in this technique, the energy penalty correlated with absorbent regeneration is a critical challenge. To reduce energy consumption, the operating parameters in NH 3 -based CO 2 capture process were optimized. Then flowsheet modifications including rich vapor compression (RVC) and lean vapor compression (LVC) were proposed for the first time in the NH 3 -based CO 2 capture process. Both the LVC and RVC schemes were combined with cold solvent split (CSS) process to further reduce the energy requirements. Moreover, the LVC and RVC processes of this study were also compared with the advanced NH 3 -based and MEA-based LVC and RVC processes with respect to energy reduction. The optimized process was considered as a base process and it was compared with the modified processes. The RVC and LVC combined with CSS process reduced the reboiler duty by 26.7% and 19%, respectively. These energy savings are much higher than that of 11.6% and 8.26% energy savings of the advanced NH 3 -based rich split and inter-heating processes, respectively. The total equivalent energy savings of LVC, RVC, LVC with CSS, and RVC with CSS processes in this study were about 6.4%, 18.1%, 3.4%, and 15%, respectively, which are higher than 3.4% and 8.5% energy savings of MEA-based LVC with CSS and RVC with CSS processes, respectively. Furthermore, these combined processes can also avoid the use of a condenser.

Original languageEnglish
Pages (from-to)8-16
Number of pages9
JournalSeparation and Purification Technology
DOIs
StatePublished - 2019 Jun 15

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Carbon Monoxide
Ammonia
Vapors
Energy conservation
Reboilers
Flowcharting
Industrial heating
Carbon Dioxide

Keywords

  • Aqueous ammonia
  • Carbon capture
  • Lean vapor compression
  • Parameters optimization
  • Rich vapor compression

Cite this

@article{86277663987d4af4b5b8df2ae88054a5,
title = "Ammonia-based CO 2 capture parameters optimization and analysis of lean and rich vapor compression processes",
abstract = "Carbon dioxide (CO 2 ) capture through chemical solvent absorption process is the most favourable and well-proven technique to reduce CO 2 emission. However, in this technique, the energy penalty correlated with absorbent regeneration is a critical challenge. To reduce energy consumption, the operating parameters in NH 3 -based CO 2 capture process were optimized. Then flowsheet modifications including rich vapor compression (RVC) and lean vapor compression (LVC) were proposed for the first time in the NH 3 -based CO 2 capture process. Both the LVC and RVC schemes were combined with cold solvent split (CSS) process to further reduce the energy requirements. Moreover, the LVC and RVC processes of this study were also compared with the advanced NH 3 -based and MEA-based LVC and RVC processes with respect to energy reduction. The optimized process was considered as a base process and it was compared with the modified processes. The RVC and LVC combined with CSS process reduced the reboiler duty by 26.7{\%} and 19{\%}, respectively. These energy savings are much higher than that of 11.6{\%} and 8.26{\%} energy savings of the advanced NH 3 -based rich split and inter-heating processes, respectively. The total equivalent energy savings of LVC, RVC, LVC with CSS, and RVC with CSS processes in this study were about 6.4{\%}, 18.1{\%}, 3.4{\%}, and 15{\%}, respectively, which are higher than 3.4{\%} and 8.5{\%} energy savings of MEA-based LVC with CSS and RVC with CSS processes, respectively. Furthermore, these combined processes can also avoid the use of a condenser.",
keywords = "Aqueous ammonia, Carbon capture, Lean vapor compression, Parameters optimization, Rich vapor compression",
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Ammonia-based CO 2 capture parameters optimization and analysis of lean and rich vapor compression processes . / Ullah, Asad; Soomro, Mujeeb Iqbal; Kim, Woo-Seung.

In: Separation and Purification Technology, 15.06.2019, p. 8-16.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Ammonia-based CO 2 capture parameters optimization and analysis of lean and rich vapor compression processes

AU - Ullah, Asad

AU - Soomro, Mujeeb Iqbal

AU - Kim, Woo-Seung

PY - 2019/6/15

Y1 - 2019/6/15

N2 - Carbon dioxide (CO 2 ) capture through chemical solvent absorption process is the most favourable and well-proven technique to reduce CO 2 emission. However, in this technique, the energy penalty correlated with absorbent regeneration is a critical challenge. To reduce energy consumption, the operating parameters in NH 3 -based CO 2 capture process were optimized. Then flowsheet modifications including rich vapor compression (RVC) and lean vapor compression (LVC) were proposed for the first time in the NH 3 -based CO 2 capture process. Both the LVC and RVC schemes were combined with cold solvent split (CSS) process to further reduce the energy requirements. Moreover, the LVC and RVC processes of this study were also compared with the advanced NH 3 -based and MEA-based LVC and RVC processes with respect to energy reduction. The optimized process was considered as a base process and it was compared with the modified processes. The RVC and LVC combined with CSS process reduced the reboiler duty by 26.7% and 19%, respectively. These energy savings are much higher than that of 11.6% and 8.26% energy savings of the advanced NH 3 -based rich split and inter-heating processes, respectively. The total equivalent energy savings of LVC, RVC, LVC with CSS, and RVC with CSS processes in this study were about 6.4%, 18.1%, 3.4%, and 15%, respectively, which are higher than 3.4% and 8.5% energy savings of MEA-based LVC with CSS and RVC with CSS processes, respectively. Furthermore, these combined processes can also avoid the use of a condenser.

AB - Carbon dioxide (CO 2 ) capture through chemical solvent absorption process is the most favourable and well-proven technique to reduce CO 2 emission. However, in this technique, the energy penalty correlated with absorbent regeneration is a critical challenge. To reduce energy consumption, the operating parameters in NH 3 -based CO 2 capture process were optimized. Then flowsheet modifications including rich vapor compression (RVC) and lean vapor compression (LVC) were proposed for the first time in the NH 3 -based CO 2 capture process. Both the LVC and RVC schemes were combined with cold solvent split (CSS) process to further reduce the energy requirements. Moreover, the LVC and RVC processes of this study were also compared with the advanced NH 3 -based and MEA-based LVC and RVC processes with respect to energy reduction. The optimized process was considered as a base process and it was compared with the modified processes. The RVC and LVC combined with CSS process reduced the reboiler duty by 26.7% and 19%, respectively. These energy savings are much higher than that of 11.6% and 8.26% energy savings of the advanced NH 3 -based rich split and inter-heating processes, respectively. The total equivalent energy savings of LVC, RVC, LVC with CSS, and RVC with CSS processes in this study were about 6.4%, 18.1%, 3.4%, and 15%, respectively, which are higher than 3.4% and 8.5% energy savings of MEA-based LVC with CSS and RVC with CSS processes, respectively. Furthermore, these combined processes can also avoid the use of a condenser.

KW - Aqueous ammonia

KW - Carbon capture

KW - Lean vapor compression

KW - Parameters optimization

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M3 - Article

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JO - Separation and Purification Technology

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SN - 1383-5866

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