Removal of H2S and/or SO2 by catalytic conversion technologies

Chung, Jong Shik; Paik, S. C.; Kim, Hee Sung; Lee, Deok Sung; Nam, In Sik

doi:10.1016/s0920-5861(96)00132-0

Cited by 37 publications

(21 citation statements)

References 10 publications

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“…Mole fractions of CO increased to a maximum value as CO 2 decomposed to release oxidizer into the reactor (reactions 29 and 30 [5,14,16]). However, decrease in CO mole fractions further downstream the reactor is attributed to COS and CS 2 formation as well as possible recombination of CO to form CO 2 [35][36][37][38][39][40]. Both COS and CS 2 mole fractions increased monotonically until they reached a maximum value.…”

Section: Casementioning

confidence: 95%

Role of toluene to acid gas (H2S and CO2) combustion in H2/O2–N2 flame under Claus condition

2015

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Section: Casementioning

confidence: 95%

Role of toluene to acid gas (H2S and CO2) combustion in H2/O2–N2 flame under Claus condition

2015

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“…Komposisi dari kandungan H2S yang masih tinggi di dalam gas menjadikan sistem kompresi ini sedikit terganggu. H2S terjadi secara alami di banyak gas alam sumur, dan diproduksi dalam jumlah besar dalam desulfurisasi stok minyak bumi [3][4][5] .…”

Section: A Kandungan Process Gasunclassified

Pengembangan Model Gas Conditioning Unit dalam Sistem Seal Gas di Kompresor Sentrifugal: Studi Kasus Kerusakan Dry Gas Seal

Saputra

2021

Journal of Applied Science

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The gas seal supply that enters the dry gas seal must meet the specifications that have been determined based on API 692. However, on reality at the site dry gas seal damage often occurs, one of which is due to contamination from the gas seal supply that will enter the dry gas seal. The sulfur contamination in the corrosive process gas reduces the life and reliability of the dry gas seal. In addition, the selection of a gas conditioning unit model that is not quite right . In this study, to obtain a good quality gas seal supply, development was carried out in the existing gas conditioning unit, upgrade seal gas strainer design using the duplex type and changing the type of strainer, changing the size of the gas filter seal from 0.3 micron to 0.1 micron and the use of coalescing. filter, repair seal gas heater and heat tracing installation on the seal gas piping, and finally replacement of seal gas booster components. The research method used is the study of literature from various references and previous studies, collecting data in the field and analyzing the findings using the PROACT method. From the analysis, it can be concluded that the development of the gas conditioning unit model in the gas seal system has a positive impact on the reliability of the dry gas seal in this centrifugal compressor.

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“…It is also a common chemical component of many gaseous steams such as liquefied petroleum gas, off-gases from industrial catalytic hydrodesulfurization, and upgrading heavy petroleum and bitumen. Since H 2 S is a strongly corrosive gas causing major health hazards, H 2 S adsorption and recovery of elemental sulfur is very important from both an environmental and economic standpoint. − Many metal oxides, such as Al 2 O 3 , , TiO 2 , Fe 2 O 3 , , V 2 O 5 , , Cr 2 O 3 , and others, have been tested as H 2 S sorbents based on both thermodynamic and kinetic criteria, and ZnO is found to be the most effective . To understand the desulfurization reactions, spectroscopic and kinetic studies have been conducted in tandem with theoretical studies. , In a recent study, Ge and co-workers have shown how vanadium cluster anions react with hydrogen sulfide to perform consecutive oxygen–sulfur exchange .…”

Section: Introductionmentioning

confidence: 99%

H₂S Reactivity on Oxygen-Deficient Heterotrimetallic Cores: Cluster Fluxionality Simulates Dynamic Aspects of Surface Chemical Reactions

Adhikari

Raghavachari

2016

J. Phys. Chem. A

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Understanding the mechanistic aspects of heterogeneous reactions on supported metal catalysts is challenging due to several disparate factors, among which the dynamic nature of the surface is a major contributor. In this study, the dynamic aspect of a surface has been probed by choosing small metal clusters as illustrative models. Two anionic hetero-trimetallic clusters, namely, W2TcO6(-) and W2OsO6(-), were reacted with H2S gas to exhibit splitting of the gas molecule and complete oxygen-sulfur exchange in the metal core. During this atom-exchange process, the core exhibits remarkable fluxionality to augment a thiol proton migration from one metal center to another, as well as a rapid interchange of the terminal and bridging oxygens. The fluxional nature of the core is further evidenced by two oppositely oriented oxo groups working in concert to accomplish the proton transfer, upon introduction of sulfur inside the core. These fluxional processes in the small hetero-trimetallic cores closely resemble the dynamic nature of the surface in a heterogeneous reaction. Throughout the fluxional processes investigated in this study, two-state reactivity and multiple instances of spin crossover are observed in our computational studies. Interestingly, the neutral hetero-trimetallic cores can also undergo complete oxygen-sulfur exchange reaction with H2S. The investigated metal clusters are promising materials, since they not only can liberate dihydrogen from water (reported in J. Phys. Chem. A, 2014, 118, 11047) but also can completely strip the sulfur from environmentally hazardous H2S gas.

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Removal of H2S and/or SO2 by catalytic conversion technologies

Cited by 37 publications

References 10 publications

Role of toluene to acid gas (H2S and CO2) combustion in H2/O2–N2 flame under Claus condition

Role of toluene to acid gas (H2S and CO2) combustion in H2/O2–N2 flame under Claus condition

Pengembangan Model Gas Conditioning Unit dalam Sistem Seal Gas di Kompresor Sentrifugal: Studi Kasus Kerusakan Dry Gas Seal

H₂S Reactivity on Oxygen-Deficient Heterotrimetallic Cores: Cluster Fluxionality Simulates Dynamic Aspects of Surface Chemical Reactions

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Removal of H2S and/or SO2 by catalytic conversion technologies

Cited by 37 publications

References 10 publications

Role of toluene to acid gas (H2S and CO2) combustion in H2/O2–N2 flame under Claus condition

Role of toluene to acid gas (H2S and CO2) combustion in H2/O2–N2 flame under Claus condition

Pengembangan Model Gas Conditioning Unit dalam Sistem Seal Gas di Kompresor Sentrifugal: Studi Kasus Kerusakan Dry Gas Seal

H2S Reactivity on Oxygen-Deficient Heterotrimetallic Cores: Cluster Fluxionality Simulates Dynamic Aspects of Surface Chemical Reactions

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H₂S Reactivity on Oxygen-Deficient Heterotrimetallic Cores: Cluster Fluxionality Simulates Dynamic Aspects of Surface Chemical Reactions