Features of sulfur oils catalytic combustion in fluidized bed

Yazykov, N. A.; Dubinin, Yu. V.; Simonov, A. D.; Решетников, С. И.; Yakovlev, V. А.

doi:10.1016/j.cej.2015.07.026

Cited by 11 publications

(3 citation statements)

References 5 publications

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“…A powdered sample with a particle size of 0.2-0.5 mm was loosely packed into a tubular U-shaped quartz reactor with a 3.8-mm inner diameter and a 10-mm length. The catalyst volume was 113 mm 3 . During the experiments, a gas mixture containing 20 vol.% O 2 and 80 vol.% He was passed through the reactor with a constant flow rate of 30 cm 3 /min and CO was injected into the gas mixture in the pulse mode (0.1 cm 3 pulse-1 for 0.75 s).…”

Section: Catalytic Activity Testsmentioning

confidence: 99%

“…The method of burning organic materials in a fluidized catalyst bed has several advantages over traditional methods of combustion [1][2][3][4][5]. In particular, the lower temperature of the process allows one to reduce the requirements for construction materials and to prevent side endothermic reactions leading to the formation of toxic nitrogen oxides (NO x ).…”

Section: Introductionmentioning

confidence: 99%

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CuFeAl Nanocomposite Catalysts for Coal Combustion in Fluidized Bed

et al. 2020

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A method of oil-drop granulation was suggested for the preparation of spherical CuFeAl nanocomposite catalysts. The catalysts were characterized by a set of physicochemical methods (X-ray diffraction, temperature-programmed reduction by H2, low-temperature nitrogen adsorption, crushing strength) and tested in the oxidation of CO and burning of brown coal in a fluidized bed. It was found that the catalysts have high mechanical strength (16.2 MPa), and their catalytic properties in the oxidation of CO are comparable to the characteristics of industrial Cr-containing catalysts. It was shown that the addition of pseudoboehmite at the stage of drop formation contributes to the production of uniform spherical high-strength granules and facilitates the stabilization of the phase state of the active component. The use of CuFeAl nanocomposite catalysts for the burning of brown coal provides a low emission of CO (600 ppm) and NOx (220 ppm) and a high degree of coal burnout (95%), which are close to those of the industrial Cr-containing catalysts (emission of CO is 700 ppm, NOx—230 ppm, and degree of coal burnout is 95%).

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Section: Catalytic Activity Testsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CuFeAl Nanocomposite Catalysts for Coal Combustion in Fluidized Bed

et al. 2020

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“…At the Boreskov Institute of Catalysis, the technology based combustion in a fluidized bed of a deep oxidation catalysts has been developed, that was successfully tested for combustion of various fuels [13,14], including such difficult to utilize ones like shale heavy coal-tar products [15], heavy high-sulfuric oils [16,17], as well as sewage sludge [18]. The use of the deep oxidation catalyst for fuel combustion allows heat production and extraction to be carried out within the same fluidized bed at a near stoichiometric air-to-fuel ratio.…”

Section: Introductionmentioning

confidence: 99%

Green approach to production of porous char adsorbents via oxidative carbonization in fluidized catalyst bed

Yeletsky,

Yazykov,

Dubinin

et al. 2024

Nanosystems: Phys. Chem. Math.

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A green and energy-efficient technique for production of porous carbon-mineral chars from agricultural wastes (rice husk, wheat bran) and sedimentary carbonaceous feedstocks (high-ash peat, coal) was developed. It is based on partial combustion in fluidized bed of a deep oxidation catalyst at low temperatures (465 -600 • C). This technique yields porous chars with an elevated mineral content that depends on a feedstock used, and gaseous products of complete oxidation. It was found that the obtained chars have developed porosity with BET specific surface area of ca. 50 -170 m 2 g −1 , pore volume of 0.05 -0.17 ml•g −1 , and ash content of 16 -79 wt. %. They were additionally characterized by TGA and FTIR. Their testing as adsorbents for heavy metal ions (by the example of Cu 2+ ) and organic dyes (by the example of methyl green) revealed that their adsorption capacities are comparable to those of chars produced by the conventional pyrolytic approaches. KEYWORDS biochar, biomass, rice husk, bran, fluidized catalyst bed, composite

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Implementation of Discrete Element Method to the Simulation of Solid Materials Fracturing

Chepelenkova

Lisitsa

2022

Lecture Notes in Computer Science

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Features of sulfur oils catalytic combustion in fluidized bed

Cited by 11 publications

References 5 publications

CuFeAl Nanocomposite Catalysts for Coal Combustion in Fluidized Bed

CuFeAl Nanocomposite Catalysts for Coal Combustion in Fluidized Bed

Green approach to production of porous char adsorbents via oxidative carbonization in fluidized catalyst bed

Implementation of Discrete Element Method to the Simulation of Solid Materials Fracturing

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