Metallurgical application of hydrogen-containing gases produced by the plasma coal gasification process at an environmentally clean thermal power station

Frolov, V. S.; Pukhov, A.; Tseitlin, M. A.; Andreev, Andrii; Frolova, I N; Гурьянов, Александрович; Lyakishev, N. P.; Tsvetkov, Yu. V.; Nozdrenko, G. V.; Ovchinnikov, Yu.V.; Korkishko, G.; Glukhov, M.; Zhukov, M. F.; Журавель, Нинель Михайловна; Zasypkin, I. M.

doi:10.1016/0360-3199(93)90120-y

Cited by 4 publications

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“…The results of Frolov et al based on plasma technologies indicate that coal gasification can provide clean syngas with 50% H 2 , 48% CO, and less than 2% (H 2 O + CO 2 ). This syngas can be used for heating or power generation or as reducing gases for conventional metallurgical processes as well as direct reduction processes . But, gaseous nitrogen-containing species in the product from coal pyrolysis and gasification under arc plasma still exist.…”

Section: Introductionmentioning

confidence: 99%

Formation of NO_x Precursors During Chinese Pulverized Coal Pyrolysis in an Arc Plasma Jet

Wang

Zhang

et al. 2007

Energy Fuels

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The formation of NO x precursors (HCN and NH3) from the pyrolysis of several Chinese pulverized coals in an arc plasma jet was investigated through both thermodynamic analysis of the C−H−O−N system and experiments. Results of thermodynamic analysis show that the dominant N-containing gaseous species is HCN together with a small amount of ammonia above the temperature of 2000 K. The increase of H content advances the formation of HCN and NH3, but the yields of HCN and NH3 are decreased with a high concentration of O in the system. These results are accordant with the experimental data. The increasing of input power promotes the formation of HCN and NH3 from coal pyrolysis in an arc plasma jet. Tar-N is not formed during the process. The yield of HCN changes insignificantly with the changing of the residence time of coal particles in the reactor, but that of NH3 decreases as residence times increase because of the relative instability at high temperature. Adsorption and gasification of CO2 on the coal surface also can restrain the formation of HCN and NH3 compare to the results in an Ar plasma jet. Yields of HCN and NH3 are sensitive to the coal feeding rate, indicating that NO x precursors could interact with the nascent char to form other N-containing species. The formation of HCN and NH3 during coal pyrolysis in a H2/Ar plasma jet are not dependent on coal rank. The N-containing gaseous species is released faster than others in the volatiles during coal pyrolysis in an arc plasma jet, and the final nitrogen content in the char is lower than that in the parent coal, which it is independent of coal type.

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Section: Introductionmentioning

confidence: 99%

Formation of NO_x Precursors During Chinese Pulverized Coal Pyrolysis in an Arc Plasma Jet

Wang

Zhang

et al. 2007

Energy Fuels

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Multiobjective optimization of synthesis gas production using non-dominated sorting genetic algorithm

Mohanty

2006

Computers & Chemical Engineering

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Numerical Study on the Acetylene Concentration in the Hydrogen-Carbon System in a Hydrogen Plasma Torch

Chen

Shen

Xingsheng

et al. 2009

Plasma Sci. Technol.

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Effects of the hydrogen/carbon mole ratio and pyrolysis gas pressure on the acetylene concentration in the hydrogen-carbon system in a plasma torch were numerically calculated by using the chemical thermodynamic equilibrium method of Gibbs free energy. The calculated results indicate that the hydrogen concentration and the pyrolysis gas pressure play crucial roles in acetylene formation. Appropriately abundant hydrogen, with a mole ratio of hydrogen to carbon about 1 or 2, and a relatively high pyrolysis gas pressure can enhance the acetylene concentration. In the experiment, a compromised project consisting of an appropriate hydrogen flow rate and a feasible high pyrolysis gas pressure needs to be carried out to increase the acetylene concentration from coal pyrolysis in the hydrogen plasma torch.

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Metallurgical application of hydrogen-containing gases produced by the plasma coal gasification process at an environmentally clean thermal power station

Cited by 4 publications

References 0 publications

Formation of NO_x Precursors During Chinese Pulverized Coal Pyrolysis in an Arc Plasma Jet

Formation of NO_x Precursors During Chinese Pulverized Coal Pyrolysis in an Arc Plasma Jet

Multiobjective optimization of synthesis gas production using non-dominated sorting genetic algorithm

Numerical Study on the Acetylene Concentration in the Hydrogen-Carbon System in a Hydrogen Plasma Torch

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Metallurgical application of hydrogen-containing gases produced by the plasma coal gasification process at an environmentally clean thermal power station

Cited by 4 publications

References 0 publications

Formation of NOx Precursors During Chinese Pulverized Coal Pyrolysis in an Arc Plasma Jet

Formation of NOx Precursors During Chinese Pulverized Coal Pyrolysis in an Arc Plasma Jet

Multiobjective optimization of synthesis gas production using non-dominated sorting genetic algorithm

Numerical Study on the Acetylene Concentration in the Hydrogen-Carbon System in a Hydrogen Plasma Torch

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Formation of NO_x Precursors During Chinese Pulverized Coal Pyrolysis in an Arc Plasma Jet

Formation of NO_x Precursors During Chinese Pulverized Coal Pyrolysis in an Arc Plasma Jet