Evaporation of aqueous suspension drops with ground admixtures in the region of high-temperature combustion products


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Abstract

The effect of typical admixtures (clay, sand, soil, and silt) on the integral evaporation characteristics of aqueous suspension drops in high-temperature gases (at nearly 1100 K) has been experimentally studied using optical methods and a high-speed video record system (up to 105 fps). The heating and evaporation of suspension drops was established to appreciably intensify with a change in the relative mass fraction of admixtures within γ = 0–0.1 for sand and γ = 0–0.01 for clay, soil, and silt. An essential effect of the preliminary heating of suspensions on the intensity of their evaporation in a flow of high-temperature gases has also been revealed. Some recommendations have been formulated for selecting evaporation parameters for the studied suspensions in contemporary and advanced high-temperature chemical and thermal engineering technologies for the purification of water from admixtures and in the sphere of fire safety.

About the authors

O. V. Vysokomornaya

National Research Tomsk Polytechnical University

Email: pavelspa@tpu.ru
Russian Federation, pr. Lenina 30, Tomsk, 634050

G. V. Kuznetsov

National Research Tomsk Polytechnical University

Email: pavelspa@tpu.ru
Russian Federation, pr. Lenina 30, Tomsk, 634050

P. A. Strizhak

National Research Tomsk Polytechnical University

Author for correspondence.
Email: pavelspa@tpu.ru
Russian Federation, pr. Lenina 30, Tomsk, 634050

A. A. Shcherbinina

National Research Tomsk Polytechnical University

Email: pavelspa@tpu.ru
Russian Federation, pr. Lenina 30, Tomsk, 634050

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