An experimental study for H2S and CO2 removal via caustic scrubbing system

Ersin Üresin; Halil Ibrahim Saraç; Alper Sarioʇlan; Şiringül Ay; Fehmi Akgün

doi:10.1016/j.psep.2014.06.013

An experimental study for H₂S and CO₂ removal via caustic scrubbing system

Ersin Üresin^*
, Halil Ibrahim Saraç
, Alper Sarioʇlan
, Şiringül Ay
, Fehmi Akgün

^*Corresponding author for this work

Scientific and Technological Research Council of Turkey
Kocaeli University

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

In this study, removal of hydrogen sulfide (H₂S) and carbon dioxide (CO₂) from simulated syngas has been studied on one column scrubbing system. Gas flow rate as a measure of gas residence time and superficial gas velocity, gas composition, inlet H₂S load, flow modes (countercurrent and cocurrent) and packing geometry were the parameters in the design and/or operation of an acid gas scrubber system. Better H₂S scrubbing efficiencies have been obtained in countercurrent flow mode than that of cocurrent flow mode. When accordingly designed, static mixer with its superior performance on H₂S removal overweighed to structured packings. The coexistence of CO₂and H₂S has been shown to increase the sodium hydroxide (NaOH) consumption along the scrubber column thereby decreasing the H₂S removal efficiency at higher H₂S loads. The gas residence time as changing with the gas velocity was found to be more dominant on acid gas removal efficiency than the effect of superficial gas velocity within the experimented range. A gas residence times of equal or above 3 s were seemed to be closer to the optimum point.

Original language	English
Pages (from-to)	196-202
Number of pages	7
Journal	Process Safety and Environmental Protection
Volume	94
Issue number	C
DOIs	https://doi.org/10.1016/j.psep.2014.06.013
Publication status	Published - 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2014 The Institution of Chemical Engineers.

Funding

We greatly acknowledge The Scientific and Technological Research Council of Turkey (TÜBİTAK) for supporting of “Fuel Production from Biomass and Coal Blends” project (Contract code: 108G043) in which this study was carried out.

Funders	Funder number
Biomass and Coal Blends	108G043
TÜBİTAK
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 13 Climate Action

Keywords

COremoval
Gas clean up
Hydrogen sulfide removal
NaOH
Packed bed gas scrubbers
Static mixer

Access to Document

10.1016/j.psep.2014.06.013

Cite this

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title = "An experimental study for H2S and CO2 removal via caustic scrubbing system",

abstract = "In this study, removal of hydrogen sulfide (H2S) and carbon dioxide (CO2) from simulated syngas has been studied on one column scrubbing system. Gas flow rate as a measure of gas residence time and superficial gas velocity, gas composition, inlet H2S load, flow modes (countercurrent and cocurrent) and packing geometry were the parameters in the design and/or operation of an acid gas scrubber system. Better H2S scrubbing efficiencies have been obtained in countercurrent flow mode than that of cocurrent flow mode. When accordingly designed, static mixer with its superior performance on H2S removal overweighed to structured packings. The coexistence of CO2and H2S has been shown to increase the sodium hydroxide (NaOH) consumption along the scrubber column thereby decreasing the H2S removal efficiency at higher H2S loads. The gas residence time as changing with the gas velocity was found to be more dominant on acid gas removal efficiency than the effect of superficial gas velocity within the experimented range. A gas residence times of equal or above 3 s were seemed to be closer to the optimum point.",

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author = "Ersin {\"U}resin and Sara{\c c}, \{Halil Ibrahim\} and Alper Sarioʇlan and {\c S}iring{\"u}l Ay and Fehmi Akg{\"u}n",

note = "Publisher Copyright: {\textcopyright} 2014 The Institution of Chemical Engineers.",

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doi = "10.1016/j.psep.2014.06.013",

language = "English",

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AU - Sarioʇlan, Alper

AU - Ay, Şiringül

AU - Akgün, Fehmi

PY - 2015

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N2 - In this study, removal of hydrogen sulfide (H2S) and carbon dioxide (CO2) from simulated syngas has been studied on one column scrubbing system. Gas flow rate as a measure of gas residence time and superficial gas velocity, gas composition, inlet H2S load, flow modes (countercurrent and cocurrent) and packing geometry were the parameters in the design and/or operation of an acid gas scrubber system. Better H2S scrubbing efficiencies have been obtained in countercurrent flow mode than that of cocurrent flow mode. When accordingly designed, static mixer with its superior performance on H2S removal overweighed to structured packings. The coexistence of CO2and H2S has been shown to increase the sodium hydroxide (NaOH) consumption along the scrubber column thereby decreasing the H2S removal efficiency at higher H2S loads. The gas residence time as changing with the gas velocity was found to be more dominant on acid gas removal efficiency than the effect of superficial gas velocity within the experimented range. A gas residence times of equal or above 3 s were seemed to be closer to the optimum point.

AB - In this study, removal of hydrogen sulfide (H2S) and carbon dioxide (CO2) from simulated syngas has been studied on one column scrubbing system. Gas flow rate as a measure of gas residence time and superficial gas velocity, gas composition, inlet H2S load, flow modes (countercurrent and cocurrent) and packing geometry were the parameters in the design and/or operation of an acid gas scrubber system. Better H2S scrubbing efficiencies have been obtained in countercurrent flow mode than that of cocurrent flow mode. When accordingly designed, static mixer with its superior performance on H2S removal overweighed to structured packings. The coexistence of CO2and H2S has been shown to increase the sodium hydroxide (NaOH) consumption along the scrubber column thereby decreasing the H2S removal efficiency at higher H2S loads. The gas residence time as changing with the gas velocity was found to be more dominant on acid gas removal efficiency than the effect of superficial gas velocity within the experimented range. A gas residence times of equal or above 3 s were seemed to be closer to the optimum point.

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