Sintered Sorbent Utilization for H2S Removal from Industrial Flue Gas in the Process of Smelter Slag Granulation

Lebedev, A. B.; Utkov, V. A.; Khalifa, Ahmed

doi:10.31897/pmi.2019.3.292

Cited by 10 publications

(8 citation statements)

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“…Determination of group chemical composition was carried out via consequent extraction of J-, E-, D 2 -, D 1 -fractions in Soxhlet extractor, using different solvents, and weighing of a mounting with mass 1±0.1 g before the extraction process and after it, in correspondence with ASTM D6560-17 «Standard Test Method for Determination of Asphaltenes (Heptane Insolubles) in Crude Petroleum and Petroleum Products». Mass part of each extracted fraction was determined via the formula (1). Extraction was conducted until complete solvent lightening in the zone of fraction extraction.…”

Section: The Methods For Determination Of Pca Group Chemical Compositionmentioning

confidence: 99%

“…Quality of metallurgical coke together with properties of iron ore agglomerates have substantial effect on blast furnace practice [1,2] and determines efficiency of cast iron melting as well as blast furnace productivity [3]. The main coke quality parameters, such as CSR and CRI, in their turn, depend directly on charge composition of the coking process [4].…”

Section: Introduction and Setting The Problemmentioning

confidence: 99%

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Petroleum coking additive - raw material component for metallurgical coke production. Part 2. Experimental studies of obtaining a petroleum coking additive

Nasifullina¹,

Starkov²,

Gabdulkhakov³

et al. 2022

cisisr

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Petroleum coke is a potential partial replacement of coking coals (being in short supply) in manufacture of metallurgical coke; in Russia and other CIS countries it was entitled as petroleum coking additive (PCA), petroleum coke with output of volatile substances within the range 15-25 %. The second part of the work describes the results of conducted experimental researches in the field of manufacture of petroleum coke additive on the example of use of two kinds of sulfuric petroleum residues of "KINEF" JSC as raw materials: residue of atmospheric distillation and mixture of residues of vacuum distillation and visbreaking. The research was conducted for two temperature procedures within the ranges 455-465 and 475-485 qС. Eight samples of carbon material were obtained as a result of conversion, and influence of input parameters of the coking process on composition and physical-chemical properties of obtained carbon materials was established. Based on content of volatile substances in petroleum coke additive and its group chemical composition, which was determined via extraction method (content of D-, Eand J-fractions) and via infrared Fourier spectroscopy, assessment and ranging of the eight obtained PCA samples were carried out by their sintering susceptibility. Interpretation of infrared spectra of obtained PCA samples was conducted via comparison with infrared spectra of coking coal, which have identical absorption stripes. Relation between PCA sintering ability and procedure parameters of the coking process was revealed. It was determined that technological process occurring at the less coking temperature 455-465 qС provides high quality PCA forming, otherwise the procedure with higher temperature (475-485 qС).

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Section: The Methods For Determination Of Pca Group Chemical Compositionmentioning

confidence: 99%

Section: Introduction and Setting The Problemmentioning

confidence: 99%

Petroleum coking additive - raw material component for metallurgical coke production. Part 2. Experimental studies of obtaining a petroleum coking additive

Nasifullina¹,

Starkov²,

Gabdulkhakov³

et al. 2022

cisisr

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show abstract

“…Currently, research is being actively conducted on the development of sorption materials based on natural aluminosilicates: bentonite, montmorillonite, cambrian clay, etc. [4,5].…”

Section: Introductionmentioning

confidence: 99%

Development of composition and study of sorbent properties based on saponite

Zubkova

Pyagay

Pankratieva

et al. 2023

PMI

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The development of a comprehensive approach to preventing the pollution of natural objects is necessary due to the high requirements of environmental legislation for the discharge of industrial wastewater. Adsorbents are used in various industries to extract heavy metals from wastewater. In this study the possibility of using saponite clay as a raw material for the production of sorbent for the extraction of copper ions Cu2+ from industrial wastewater is considered, a recipe and technology of sorbent production are developed, and its chemical composition is established. It has been established that the optimum temperature for heat treatment of the sorbent and corresponds to 550 ºC, since at this temperature saponite extrudates acquire strength (strength 34.1 kg/mm2) and textural properties (specific surface area of pellets 22.803 m2/g), allowing them to be used as sorbents. The kinetics of molecular adsorption was studied using model solutions of copper (II) sulfate. The extraction efficiency of copper (II) ions from the model solutions is 93 %. Extraction efficiency of copper (II) ions from copper plating wastewater reaches 94 %. SEM results confirm the presence of metal on the sorbent surface.

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“…Technological processes associated with the processing of minerals, in particular, apatite-nepheline raw materials, as well as metallurgical and chemical production, lead to the formation of large amounts of waste, which is an environmental problem of mineral complexes. One of the significant problems is the emission of process gases into the atmosphere containing toxic substances, including sulfur-containing compounds. − …”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Characteristics of the Hydrogen Sulfide Sorption Process by Ferromanganese Materials

et al. 2022

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The work analyzes hydrogen sulfide sorption from model gas mixtures containing H 2 S from 1.25 × 10 −3 to 1.28 × 10 −4 mol/L under static conditions at temperatures 253 and 298 K on the raw manganese ore of the Ulu-Telyak deposit (Bashkortostan, Russia), manganese(IV) oxide, and manganese(IV) and iron(III) oxide mixtures. The thermodynamic models for calculating the equilibrium constants and Gibbs energy changes were analyzed. The sorption isotherms were described by the Langmuir, Freundlich, Temkin, and Dubinin−Radushkevich models. The value of enthalpy H (253 298) 0 Δ − of hydrogen sorption on the ore was −68.98 ± 3.45 kJ/mol and those on model mixtures Mn 4 + Fe 2 O 3 and MnO 4 were ±12.20 kJ/mol and −103.826 ± 5.19 kJ/ mol, respectively, and the entropies of the hydrogen sulfide sorption process on three manganese materials at 253 K were calculated.The limiting capacity values of manganese materials at 253 and 298 K were obtained. The morphological analysis of the ore samples, Mn 4 + Fe 2 O 3 , and MnO 4 , before and after hydrogen sulfide sorption, was carried out at 253 K. The obtained thermodynamic parameters determine the advantage of using the raw manganese ore over pure oxides, which characterizes its effective practical application in the desulfurization process.

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Sintered Sorbent Utilization for H2S Removal from Industrial Flue Gas in the Process of Smelter Slag Granulation

Cited by 10 publications

References 0 publications

Petroleum coking additive - raw material component for metallurgical coke production. Part 2. Experimental studies of obtaining a petroleum coking additive

Petroleum coking additive - raw material component for metallurgical coke production. Part 2. Experimental studies of obtaining a petroleum coking additive

Development of composition and study of sorbent properties based on saponite

Thermodynamic Characteristics of the Hydrogen Sulfide Sorption Process by Ferromanganese Materials

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