Prospects for the use of natural ferromanganese sorbents of hydrogen sulfide for high-temperature cleaning of syngas

Epikhin, A. N.; Krylov, I. O.; Сомов, А. А.; Suchkov, S. I.; Timashkov, K. V.; Strokov, A. A.; Ligovskaya, I. G.

doi:10.1007/s10749-012-0322-0

Cited by 5 publications

(3 citation statements)

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“…Low-temperature clean-up, performed by means of chemical absorbers in the liquid state at low temperature (under 50 °C) in a counter-current with syngas, which is over 800 °C (at its current gasification temperature), has many disadvantages, such as the reduction of the efficiency of the power plant due to the consumption of water and the production of polluted water, which must then be purified [65,66]. For this reason, low-temperature gas cleaning approaches are discouraged.…”

Section: Gas Cleaning Technologiesmentioning

confidence: 99%

A Review of Hot Gas Cleaning Techniques for Hydrogen Chloride Removal from Biomass-Derived Syngas

2021

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Considering the pressing challenges of supply security and climate change, advanced processes to produce electricity and biofuels from biomass have to be developed. Biomass gasification is a very promising technology, but there is a lack of comprehensive reviews, specifically on the technologies for hydrogen chloride hot gas cleanup, which are necessary in order to work at the same temperature and respect the limits of advanced downstream components. In this review, the Cl content of the main biomasses in Europe is given, and data on syngas content and the tolerance of downstream equipment are highlighted. Hot gas cleaning technologies, which have the advantage of improved thermal efficiency are reviewed, analyzing the thermodynamic and primary and secondary methods. This review identifies NaAlO2 and Na2CO3 within 450–550 °C as the most effective sorbents, which are able to reduce the concentration of HCl below 1 ppm. Nevertheless, H2S cannot be simultaneously removed and has to be removed first, because it reduces the HCl adsorption sorbent capacity.

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Section: Gas Cleaning Technologiesmentioning

confidence: 99%

A Review of Hot Gas Cleaning Techniques for Hydrogen Chloride Removal from Biomass-Derived Syngas

2021

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“…These materials have demonstrated a unique inertness with respect to the main components of syngas, including the absence of side reactions. This is a very important condition, unlike the reaction of fixation of sulfur compounds, since it directly affects the calorific value of cleaned syngas .…”

Section: Hydrogen Sulfide Scavengersmentioning

confidence: 99%

A Comprehensive Review of H₂S Scavenger Technologies from Oil and Gas Streams

2017

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Sour crudes containing > 0.5 % sulfur are of low quality and cause harm to equipment, the environment, and to humans. Therefore, sustainable measures for crude oil sweetening are of significant importance. Removal of H2S directly at the wellhead before the transport increases the value of crude oil and may be necessary to adhere to legal transport laws. Chemical agents known as scavengers are used to scrub H2S from crude oils. Scavengers are either of the regenerative or non‐regenerative type and are used depending on the pH or water content of the crude stream. The literature has been surveyed to reveal those absorbents that allow the most effective scavenging of H2S at wellhead applications. The chemical processing, including recovery of scavenger or end use of products, is discussed for decision‐making at the confluence of chemistry and chemical engineering for H2S removal. This work investigates how and why some scavengers perform better for some crudes and environmental conditions than others with the intent to develop designer scavengers and processing conditions for the crude oil industry.

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“…The IGCC technology has proved itself with forge coal gasification [14], this technology uses a hot dry desulphurization system with use of manganese oxide as a sorbent. Manganese oxides are preferable due to their low cost compared to the reversible analogues based on ZnO and aluminum dioxide.…”

Section: Introductionmentioning

confidence: 99%

Syngas clean-up system kinetics investigation

et al. 2018

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Zinc oxide and hydrogen sulfide reaction was researched experimentally. Dynamic characteristics (solid phase mass change per time, temperature change per time inside the reactor, gas volume flow rate on inlet) were obtained for pure ZnO powder and granular sorbent Katalco 32-4-Johnson & Matthey by thermogravimetric analyzer. Pre-exponential factor, energy activation and specific mass flow rate of ZnO were numerically calculated for pure ZnO. Pure ZnO, ZnO 2 SC, and granular sorbent conversion rates were compared. Thermogravimetric experiments with pure ZnO and with ZnO 2 SC were simulated in ANSYS Fluent software. Kinetic constants were input parameters for CFD software. Simulation data and experimental results agree well on sorbent conversion diagram.

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Prospects for the use of natural ferromanganese sorbents of hydrogen sulfide for high-temperature cleaning of syngas

Cited by 5 publications

References 0 publications

A Review of Hot Gas Cleaning Techniques for Hydrogen Chloride Removal from Biomass-Derived Syngas

A Review of Hot Gas Cleaning Techniques for Hydrogen Chloride Removal from Biomass-Derived Syngas

A Comprehensive Review of H₂S Scavenger Technologies from Oil and Gas Streams

Syngas clean-up system kinetics investigation

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Prospects for the use of natural ferromanganese sorbents of hydrogen sulfide for high-temperature cleaning of syngas

Cited by 5 publications

References 0 publications

A Review of Hot Gas Cleaning Techniques for Hydrogen Chloride Removal from Biomass-Derived Syngas

A Review of Hot Gas Cleaning Techniques for Hydrogen Chloride Removal from Biomass-Derived Syngas

A Comprehensive Review of H2S Scavenger Technologies from Oil and Gas Streams

Syngas clean-up system kinetics investigation

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A Comprehensive Review of H₂S Scavenger Technologies from Oil and Gas Streams