Diffusive Transfer During Filtration Drying of Sunflower Stalks

Кіндзера, Д. П.; Atamanyuk, Volodymyr; Hosovkyi, Roman

doi:10.23939/cte2019.01.105

Cited by 4 publications

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“…The use of the filtration method of drying for iron (II) sulfate heptahydrate allows to intensify the process of its dehydration due to the achievement of high values of heat and mass transfer coefficients as a result of intense contact between the mobile thermal agent and the product, is located on a perforated lattice and reduce energy costs for the implementation of the latter in comparison with the specified industrial methods [26][27][28]. In addition, cooling the crystals at the final stage of drying by filtering cold air through the layer of material reduces the risk of product caking [17,29].…”

Section: Proposed Solution To the Problemmentioning

confidence: 99%

Study of the Kinetics of Drying Iron (Ii) Sulfate Heptahydrate by Filtration Method

Tsiura

Кіндзера

Huzova

et al. 2021

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The object of research: kinetics of filtration drying process of iron (II) sulfate heptahydrate. Solved problem: to obtain the calculated dependence of the kinetics of filtration drying, which predicts the nature of the change in the moisture content of the material in time during the period of complete saturation of the thermal agent with moisture in the range of heights of the material layer 30.10-3–120.10-3 m and the speeds of the thermal agent 0.46–1.61 m/s. Main scientific results: The kinetics of filtration drying of iron (II) sulfate heptahydrate was investigated at different heights of the material layer and pressure drops over dry material, which means at different speeds of movement of the thermal agent. A certain critical moisture content, which is Wcr=0.065 kg H2O/kg dry mat and the time it reaches at different heights of the material layer and the speeds of movement of the thermal agent. Based on the solution of the system of differential equations of material balance in the layer and the kinetics of drying, the kinetic coefficients for iron (II) sulfate heptahydrate a=15.75 1/m, α=3.03.10-3 1/s were determined, which made it possible to obtain the calculated dependence of the kinetics drying, which predicts the nature of the change in the moisture content of the material over time during the period of complete saturation of the thermal agent with moisture in the range of heights of the material layer H=30.10-3–120.10-3 m and the velocities of the thermal agent υ=0.46–1.61 m/s. The area of practical application of the results: enterprises for the production of titanium (IV) oxide with the production of iron (II) sulfate heptahydrate as a by-product and enterprises specializing in the manufacture of pigments based on iron (II) sulfate heptahydrate. Innovative technological product: iron (II) sulfate tetrahydrate (FeSO4•4H2O, rosenite), obtained as a result of drying by the filtration method. Scope of application of the innovative technological product: in the production technology of iron oxide pigments.

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Section: Proposed Solution To the Problemmentioning

confidence: 99%

Study of the Kinetics of Drying Iron (Ii) Sulfate Heptahydrate by Filtration Method

Tsiura

Кіндзера

Huzova

et al. 2021

Self Cite

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“…Since the cost of drying is a significant, finding alternative drying methods with designing new constructions of dryers is an urgent task. Therefore, to implement the drying process of slag and clay, we propose the filtration drying method which gives an opportunity to intensify mass and heat transfer processes and to reduce the drying agent amount, drying time and energy loss through outlet drying agent [4].…”

Section: Introductionmentioning

confidence: 99%

Slag of thermal power plants as an attractive raw material for porous fillers production

2021

Chemical Technology and Engineering. Proceedings

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The possibility of using TPP slag as the raw material for the production of porous filler has been proved. This approach increases the savings of natural resources, reduces the cost of finished product and reduces the level of environmental pollution. Insignificant values of the pressure drop confirm the application feasibility of the filtration drying as an energy-saving method of the drying of slag and clay for the preparation of the charge for porous filler production. Obtained results on kinetics are useful for the organization and intensification of the filtration drying process of slag and clay as the preliminary stage at the porous fillers production line. The qualitative new porous filler with the bulk density of 230 kg/m 3 , the specific heat of 0,82 kJ/kg•K, the thermal conductivity of 0,067 W/m 2 •K and with a compressive strength of 27,7 MPa has been obtained which can be used for the production of lightweight concretes.Кеуwordsthermal power plant (TPP), ash and slag wastes, utilization, porous filler, filtration drying, lightweight concrete.

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Drying of the microsphere for the manufacture of heat-insulating dry buildingmixes

Кіндзера¹,

Атаманюк²,

Hosovskyi³

2022

CTAS

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A promising area for the production of heat-insulating dry building mixes is the use of the microsphere of thermal power plants, that will promote the formation of thermal insulation, strength, chemically and thermally stable properties of products. To dry the microsphere, a filtration method was proposed which consists in filtering the heat agent through the porous structure of the material in the direction "material - perforated grate". The investigated results of the heat agent temperature and velocity effect on the drying process duration of microsphere and obtained values of heat transfer coefficients from heat agent to microsphere particles α = 35 ÷ 72 W/m2.K allow to calculate energy consumption for the implementation of the drying process and to choose optimal technological parameters for it intensification.

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Diffusive Transfer During Filtration Drying of Sunflower Stalks

Cited by 4 publications

References 0 publications

Study of the Kinetics of Drying Iron (Ii) Sulfate Heptahydrate by Filtration Method

Study of the Kinetics of Drying Iron (Ii) Sulfate Heptahydrate by Filtration Method

Slag of thermal power plants as an attractive raw material for porous fillers production

Drying of the microsphere for the manufacture of heat-insulating dry buildingmixes

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