Removal of H2S from hot gas in the presence of Cu-containing sorbents

Kyotani, Takashi; Kawashima, Hiroyuki; Tomita, Akira; Palmer, Allan D.; Furimsky, Edward

doi:10.1016/0016-2361(89)90014-8

Cited by 41 publications

(34 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the amount of SO2 produced is already very low with the pre-reduced sample in dry conditions, the steam can further inhibit SO2 formation. A similar SO2 suppression effect of steam addition was reported by Kyotani et al [28] in a Cu sorbent study. The thermodynamic calculations done here using Factsage can be regarded as a calculated equilibrium in a batch reactor filled with a specific amount of gas and sorbent at isothermal conditions.…”

Section: Effect Of Steam Content On Residual Sulfur Concentrationssupporting

confidence: 86%

See 1 more Smart Citation

The Impact of Operating Parameters on the Gas-Phase Sulfur Concentration after High Temperature Sulfur Sorption on a Supported Mo-Mn Sorbent

Mahmoodinia

Rout

et al. 2021

Reactions

View full text Add to dashboard Cite

The impact of operating parameters on H2S capture from a syngas mixture by a Mo-promoted Mn-based high-temperature sorbent was investigated. The parameters investigated included temperature, space velocity, H2S concentration in the feed gas, and steam content. The H2S and SO2 concentrations in the gas after passing over a bed of the sorbent were analyzed and compared with thermodynamic calculations. The results confirmed that low temperature, low space velocity, low H2S concentration, and a dry feed were favorable for achieving a low residual concentration of sulfur compounds in the effluent gas. The sorbent was able to reduce the residual H2S concentration to below 1 ppm under all tested conditions. However, the unavoidable steam content in the gas phase had a significant adverse effect on sulfur removal from the gas. An empirical model, containing the three variables, i.e., temperature, space velocity, and H2S concentration in the feed, was developed and can be used to predict the effluent H2S residual concentration after treatment by the 15Mn8Mo sorbent.

show abstract

Section: Effect Of Steam Content On Residual Sulfur Concentrationssupporting

confidence: 86%

Section: Effect Of Steam Content On Residual Sulfur Concentrationssupporting

confidence: 85%

The Impact of Operating Parameters on the Gas-Phase Sulfur Concentration after High Temperature Sulfur Sorption on a Supported Mo-Mn Sorbent

Mahmoodinia

Rout

et al. 2021

Reactions

View full text Add to dashboard Cite

show abstract

“…One possible explanation for the disagreements of the experimental SO 2 and H 2 O emission values with the predictions of reaction (13) could be the incomplete conversion of MoO 2 to MoS 2 . Considering this possibility, the overall reaction between the Cu-Mo mixed oxide and H 2 S in the absence of hydrogen can be written from reactions (14), (5), and (15) as (16) is also possible. Considering this possibility, the overall reaction between the Cu-Mo mixed oxide and H 2 S in the absence of hydrogen can be written from reactions (14), (5), and (15) as (16) is also possible.…”

Section: Breakthrough Analysis 1065mentioning

confidence: 99%

Breakthrough Analysis OF H 2 S removal on CU-V-MO, CU-V, and CU-MO mixed oxides

Yasyerli

Doğu

et al. 2003

Chemical Engineering Communications

View full text Add to dashboard Cite

Kinetic studies carried out for the sorption of H 2 S in the presence and absence of hydrogen on Cu-V-Mo, Cu-V, and Cu-Mo mixed oxides gave detailed information about the reaction sequences. Formation of SO 2 even in the presence of hydrogen at the initial stages of the sorption process showed the partial reduction of the metal oxides prior to the sulfidation step. A sorption experiment carried out with Cu-Mo mixed oxide gave incomplete sulfidation of molybdenum, whereas with Cu-V mixed oxide complete sulfidation was obtained. Predictions of the breakthrough curves by the deactivation model showed good agreement with the experimental results.

show abstract

“…The period before the breakthrough for the 15Cu sorbent is much shorter compared to the Mn-and Fe-based sorbents, under all tested temperatures. This might be due to the reduction of copper oxide to elementary copper at higher temperatures, combined with sintering of the active phase [34].…”

Section: Residual Sulfur Concentrations On Cu-based Sorbentmentioning

confidence: 99%

“…Reduction by H 2 S can be considered to occur according to Eqs. (8) and ( 9) [34], and metallic Cu adsorbs H 2 S according to Eq. (10) [16].…”

Section: Residual Sulfur Concentrations On Cu-based Sorbentmentioning

confidence: 99%

Regenerable Sorbents for High‐Temperature Desulfurization of Syngas from Biomass Gasification

Mahmoodinia

Rout

et al. 2021

Chemie Ingenieur Technik

View full text Add to dashboard Cite

Single-metal high-temperature solid sorbents for syngas cleaning using Mn, Ca, Fe, Cu, or Mo supported on g-Al 2 O 3 were synthesized, characterized, and tested in a fixed-bed reactor. H 2 S and SO 2 concentrations in the gas after treatment at T = 400 to 700°C were compared with thermodynamic calculations. The Mn-based sorbent showed the best ability to achieve a low sulfur residual in the gas, especially at temperatures above 600°C. Sorbents with Fe, Cu, and Mo gave SO 2 formation in the initial phase, but this could be avoided by a pre-reduction treatment of the sorbent material.

show abstract

Removal of H2S from hot gas in the presence of Cu-containing sorbents

Cited by 41 publications

References 4 publications

The Impact of Operating Parameters on the Gas-Phase Sulfur Concentration after High Temperature Sulfur Sorption on a Supported Mo-Mn Sorbent

The Impact of Operating Parameters on the Gas-Phase Sulfur Concentration after High Temperature Sulfur Sorption on a Supported Mo-Mn Sorbent

Breakthrough Analysis OF H 2 S removal on CU-V-MO, CU-V, and CU-MO mixed oxides

Regenerable Sorbents for High‐Temperature Desulfurization of Syngas from Biomass Gasification

Contact Info

Product

Resources

About