Comparative study of coal plasma gasification: Simulation and experiment

Мессерле, В. Е.; Устименко, А. Б.; Lavrichshev, O. A.

doi:10.1016/j.fuel.2015.09.095

Cited by 50 publications

(24 citation statements)

References 7 publications

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“…The power capacity of the MW and RF plasmas can reach several kilowatts (3-5 kW, in some cases up to 10 kW) [51,53], whereas that of the DC arc plasma from hundreds of kilowatts up to several megawatts. This makes the DC arc plasma closer to industrial scale applications, as well as its reliability in operation.…”

Section: Comparison With Similar Gasification Methodsmentioning

confidence: 99%

The Potential of Thermal Plasma Gasification of Olive Pomace Charcoal

Tamošiūnas

Chouchène²,

Valatkevičius

et al. 2017

Energies

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Annually, the olive oil industry generates a significant amount of by-products, such as olive pomace, olive husks, tree prunings, leaves, pits, and branches. Therefore, the recovery of these residues has become a major challenge in Mediterranean countries. The utilization of olive industry residues has received much attention in recent years, especially for energy purposes. Accordingly, this primary experimental study aims at investigating the potential of olive biomass waste for energy recovery in terms of synthesis gas (or syngas) production using the thermal arc plasma gasification method. The olive charcoal made from the exhausted olive solid waste (olive pomace) was chosen as a reference material for primary experiments with known composition from the performed proximate and ultimate analysis. The experiments were carried out at various operational parameters: raw biomass and water vapour flow rates and the plasma generator power. The producer gas involved principally CO, H 2 , and CO 2 with the highest concentrations of 41.17%, 13.06%, and 13.48%, respectively. The produced synthesis gas has a lower heating value of 6.09 MJ/nm 3 at the H 2 O/C ratio of 3.15 and the plasma torch had a power of 52.2 kW.

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Section: Comparison With Similar Gasification Methodsmentioning

confidence: 99%

The Potential of Thermal Plasma Gasification of Olive Pomace Charcoal

Tamošiūnas

Chouchène²,

Valatkevičius

et al. 2017

Energies

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“…The materials vary diversely, including gaseous hydrocarbon [2][3][4], liquid hydrocarbon [5,6], coal [7,8], polymer [9,10], biomass [11,12] and solid waste [13,14], etc., and the target products differ from syngas to valuable chemicals such as acetylene, ethylene and carbon nanotube.…”

Section: Introductionmentioning

confidence: 99%

Hydropyrolysis of n-Hexane and Toluene to Acetylene in Rotating-Arc Plasma

Zhang

et al. 2017

Energies

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Thermal plasma pyrolysis is a powerful technology for converting waste or low-value materials to valuable gaseous hydrocarbons. This paper presents for the first time the hydropyrolysis of n-hexane and toluene in a rotating-arc plasma reactor. Effects of the mole ratio of H/C in the feed, power input and magnetic induction were investigated to evaluate the reaction performance. A lower H/C ratio could lead to a lower yield of C 2 H 2 and lower specific energy consumption, and there existed an optimum range of power input for both n-hexane and toluene pyrolysis within the investigated range. The yield of C 2 H 2 in n-hexane and toluene pyrolysis could reach 85% and 68%, respectively, with respective specific energy consumption (SEC) of 13.8 kWh/kg·C 2 H 2 and 19.9 kWh/kg·C 2 H 2 . Compared with the results reported in literature, the rotating-arc plasma process showed higher C 2 H 2 yield and lower energy consumption, which is attributed to the better initial mixing of the reactant with the hot plasma gas and the more uniform temperature distribution.

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“…However, the content of carbon in coal is usually more than 60 wt% (up to more than 90 wt% in bituminous coal) whereas that of hydrogen is \5 wt% (Martelli et al 2011;Shen et al 2016). The high content of carbon in coal results in low H 2 /CO molar ratios, usually less than one, of produced gas from coal gasification (Messerle et al 2016). For example, the produced gas of the British Gas-Lurgi (BGL) coal gasification process is composed of 60%-70% CO, 27%-30% H 2 , 0%-7% CH 4 , 1%-4% CO 2 , and trace amounts of O 2 and light hydrocarbons (Yu and Wang 2010).…”

Section: List Of Symbolsmentioning

confidence: 99%

CO hydrogenation combined with water-gas-shift reaction for synthetic natural gas production: a thermodynamic and experimental study

Meng

et al. 2017

Int J Coal Sci Technol

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The hydrogenation of CO to synthetic natural gas (SNG) needs a high molar ratio of H 2 /CO (usually large than 3.0 in industry), which consumes a large abundant of hydrogen. The reverse dry reforming reaction (RDR, 2H 2 ? 2CO $ CH 4 ? CO 2 ), combining CO methanation with water-gas-shift reaction, can significantly decrease the H 2 /CO molar ratio to 1 for SNG production. A detailed thermodynamic analysis of RDR reaction was carried out based on the Gibbs free energy minimization method. The effect of temperature, pressure, H 2 /CO ratio and the addition of H 2 O, CH 4 , CO 2 , O 2 and C 2 H 4 into the feed gas on CO conversion, CH 4 and CO 2 selectivity, as well as CH 4 and carbon yield, are discussed. Experimental results obtained on homemade impregnated Ni/Al 2 O 3 catalyst are compared with the calculations. The results demonstrate that low temperature (200-500°C), high pressure (1-5 MPa) and high H 2 /CO ratio (at least 1) promote CO conversion and CH 4 selectivity and decrease carbon yield. Steam and CO 2 in the feed gas decrease the CH 4 selectivity and carbon yield, and enhance the CO 2 content. Extra CH 4 elevates the CH 4 content in the products, but leads to more carbon formation at high temperatures. O 2 significantly decreases the CH 4 selectivity and C 2 H 4 results in the generation of carbon.Keywords Synthetic natural gas Á Reverse dry reforming of methane Á Gibbs free energy minimization Á Experimental study Á CO conversion List of symbols A k Total mass of k element in the feed f i H Standard-state fugacity of species i (Pa) f i

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Comparative study of coal plasma gasification: Simulation and experiment

Cited by 50 publications

References 7 publications

The Potential of Thermal Plasma Gasification of Olive Pomace Charcoal

The Potential of Thermal Plasma Gasification of Olive Pomace Charcoal

Hydropyrolysis of n-Hexane and Toluene to Acetylene in Rotating-Arc Plasma

CO hydrogenation combined with water-gas-shift reaction for synthetic natural gas production: a thermodynamic and experimental study

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