Study of liquid hydrocarbons atomization by supersonic air or steam jet

Ануфриев, И. С.; Shadrin, E. Yu.; Kopyev, E. P.; Алексеенко, С. В.; Шарыпов, О. В.

doi:10.1016/j.applthermaleng.2019.114400

Cited by 41 publications

(8 citation statements)

References 38 publications

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“…To improve the stability of slurries, NaOH surfactant was added to their composition according to [48][49][50][51].…”

Section: Experimental Methodsmentioning

confidence: 99%

“…The measurement errors of CWF and ACWF properties (at least five measurements were performed to determine each value) were: -measurement of the dynamic viscosity of slurries with a rotary viscometer ±3.5 %; -measurement of slurries densities with a hydrometer ±3.0 %; -measurement of the lower calorific value by a calorimeter ±0.1 %. High-speed visualization and recording of jet characteristics (droplet velocity, size, and number) was performed by particle image velocimetry (PIV) and interferometric particle imaging (IPI) according to [51][52][53].…”

Section: Experimental Methodsmentioning

confidence: 99%

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Spraying Characteristics of Alcohol‐Coal‐Water Slurries with Low Coal Content

et al. 2022

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The results of spraying characteristics of alcohol‐coal‐water slurries are presented. It has been experimentally proved that the lowest viscosity value of the studied slurries varies from 54 to 329 mPa s. The density value of alcohol‐coal‐water slurries decreases to 1130 kg m−3 when the content of isopropyl alcohol in the fuel composition is 8 wt %. The largest value of jet spraying angle corresponds to alcohol‐coal‐water fuel with an isopropyl alcohol content of 8 wt %. The number of sufficiently large droplets decreases in comparison with a typical two‐component coal‐water fuel. The calorific value of alcohol‐coal‐water slurries rises when the third liquid fuel component is introduced into the composition of coal‐water fuel.

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“…To improve the stability of slurries, NaOH surfactant was added to their composition according to [48][49][50][51].…”

Section: Experimental Methodsmentioning

confidence: 99%

Section: Experimental Methodsmentioning

confidence: 99%

Spraying Characteristics of Alcohol‐Coal‐Water Slurries with Low Coal Content

et al. 2022

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“…High-speed visualization of jet characteristics (droplet velocities and spraying angle) and image processing were performed according to [26]. Image processing was performed using the ActualFlow software developed by Sigma-Pro (Novosibirsk, Russia) [27]. At the moment of the study area illumination with a laser pulse, the jet was recorded using a digital cross-correlation camera.…”

Section: Experimental Study On Atomization Characteristics Of Pyrolys...mentioning

confidence: 99%

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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“…However, combustion of substandard fuel in evaporative type burners is not effective. For such fuels, an original spray-type burner that implements a method of liquid fuel atomization by a jet of superheated steam has been developed [50]. The novelty is that liquid fuel is sprayed directly by a high-velocity steam jet without atomizing the fuel by a nozzle.…”

Section: Introductionmentioning

confidence: 99%

Cleaner crude oil combustion during superheated steam atomization

et al. 2021

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Crude oil is an attractive fuel for energy production, since its use does not require additional processing costs. Existing technologies for burning liquid fuel do not always ensure the achievement of the modern ecological and energy performance when using highly viscous and substandard fuels. This relates to unstable ignition and combustion of such fuels in the combustion chamber, relatively fast coking of the burner surfaces, etc. The work deals with investigation of crude oil burning in a flow of superheated steam as a promising way to reduce nitrogen oxides (NOx) and increase the completeness of fuel combustion. The experiments were carried out using an original burner where liquid fuel is sprayed due to interaction with a high-velocity flow of superheated steam. This method of spraying allows the creation of a highly dispersed two-phase flow and prevents nozzle chocking and coking when using substandard fuel and waste. At the same time, steam gasification of products of fuel thermal decomposition allows the reduction of toxic emissions, increasing carbon burnout. The regimes of crude oil burning in a modernized burner that provide high completeness of fuel combustion (~44 MJ/kg) with a low content of nitrogen oxides and carbon monoxide in the combustion products have been determined. The amount of these toxic components corresponds to class 1 of EN 267. The results obtained confirm the effectiveness of the investigated method of fuel spraying by a superheated steam jet for environmentally friendly crude oil burning, including this process in the low-power burners (~15 kW). Such devices can be used for the cleaner elimination of liquid hydrocarbon waste with the receipt of thermal energy.

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Study of liquid hydrocarbons atomization by supersonic air or steam jet

Cited by 41 publications

References 38 publications

Spraying Characteristics of Alcohol‐Coal‐Water Slurries with Low Coal Content

Spraying Characteristics of Alcohol‐Coal‐Water Slurries with Low Coal Content

Steam Pyrolysis of Oil Sludge for Energy-Valuable Products

Cleaner crude oil combustion during superheated steam atomization

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