Liquid Hydrocarbons Production by the Steam Pyrolysis of Used Tires: Energy Characteristics and Environmental Sustainability

Ларионов, К. Б.; Slyusarskiy, Konstantin V.; Kirgina, Maria; Gvozdyakov, D. V.; Bogdanov, Ilya; Zenkov, А. V.; Yankovsky, S. A.; Губин, В. Е.

doi:10.1007/s12649-021-01628-2

Cited by 8 publications

(2 citation statements)

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“…It hinders the diffusion interaction between the air and the combustible components of liquid hydrocarbons. The obtained dependence of the flame combustion time of liquid hydrocarbons on the increased air temperature agrees with the data reported by other research [19].…”

Section: Ignition and Combustionsupporting

confidence: 92%

“…The thermal conversion of hydrocarbons in the superheated steam medium (at 500-700 • C) can have a number of environmental and technological advantages, such as the neutralization of harmful compounds formed in the steam-gas mixture [17,18] and the improvement of the quality indicators of the condensed liquid hydrocarbons (reduced content of sulfur compounds, ash, changed molecular weight of light hydrocarbons) [19]. In addition, the use of superheated steam as a hydrocarbons conversion agent increases the H 2 content in the resulting synthesis gas: C + H 2 O → CO + H 2 , CH 4 + H 2 O → CO + 3H 2 and CO + H 2 O → CO 2 + H 2 [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

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Steam Pyrolysis of Oil Sludge for Energy-Valuable Products

et al. 2022

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Experimental studies of the steam pyrolysis of oil sludge were performed using a flow-type pilot plant with 300 kg/h capacity (raw material) to obtain energy-valuable products, such as liquid hydrocarbons (30.4 wt%), semi-coke (39.6 wt%), non-condensable gas-phase compounds (26.5 wt%), and bitumen (3.5 wt%). The pyrolysis process was conducted at a temperature of 650 ° C and with a steam flow rate of 150 kg/h. Liquid hydrocarbons were considered a target product. Comprehensive studies of their physicochemical characteristics, atomization process, droplet ignition, and combustion were carried out. The studied sample had physicochemical characteristics similar to traditional fuel oil (calorific value—42.6 MJ/kg, sulfur content—0.8 wt%). The jet spraying angle was 25° in view of the improved rheological properties of the test sample, with a homogeneous jet structure and a predominant droplet diameter of no more than 0.4 mm. The flame combustion process was accompanied by the formation of microexplosions, the frequency and intensity of which depended on the temperature of the air (Tg = 450–700 °C). This study, in view of its applied nature, is of interest in the design of new installations and technological systems for hydrocarbon pyrolysis.

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Section: Ignition and Combustionsupporting

confidence: 92%