Investigation of the Kinetics of the Drying Process of Composite Pellets on a Convective Drying Stand

Petrova, Zhanna; Sniezhkin, Yurii; Пазюк, Вадим Михайлович; Novikova, Yuliia; Petrov, Anton

doi:10.12911/22998993/137676

Cited by 6 publications

(4 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The created two-component mixture was dried on a convective drying stand with an automatic system for collecting experimental data and their processing [3].…”

Section: Discussion Of Resultsmentioning

confidence: 99%

Study of Drying of Solid Peat Residue and Composite Based on It

2023

2023 4th International Scientific Conference "Chemical Technology and Engineering". Proceedings

View full text Add to dashboard Cite

show abstract

“…The created two-component mixture was dried on a convective drying stand with an automatic system for collecting experimental data and their processing [3].…”

Section: Discussion Of Resultsmentioning

confidence: 99%

Study of Drying of Solid Peat Residue and Composite Based on It

2023

2023 4th International Scientific Conference "Chemical Technology and Engineering". Proceedings

View full text Add to dashboard Cite

show abstract

“…Granulation of two-and three-component compositions was performed on a screw mechanical device [14]. Drying kinetics studies were performed on a convective drying stand, which allows heat treatment with a drying agent at a temperature of 80 -120 °C and a speed of 0.5 -5 m/s, with automatic information collection [15].…”

Section: Presentation and Discussion Of The Research Resultsmentioning

confidence: 99%

Investigation of drying process kinetics of composite granules

Petrova¹

2022

Energy eng. control syst.

Self Cite

View full text Add to dashboard Cite

Among the large number of modern environmental problems in Ukraine, waste of wastewater treatment stations occupies a special place. During biological water treatment, the separated sludge deposits are sent to the silt fields, which are the biggest problem. Today, these fields reached their capacity three times over and pose a danger, the consequences of which go far beyond environmental problems and have grown into a chain of socio-economic, technical, medical-biological and moral-ethical problems. Previously, activated sludge was used as fertilizer in the fields, but in connection with the Chornobyl Disaster, it was banned. As a result, accumulations of silt deposits were formed, which are also called obsolete. A modern solution is the compaction of sediments and the development of energy-efficient technologies for the processing of obsolete sludge and incineration in appropriate facilities. This paper presents the results of the drying process study for composite granules based on peat, sludge and biomass. The effect of coolant temperature on the drying rate shows the 1.4-fold intensification of the drying process. Theoretical studies with the construction of generalized drying curves of composite granules calculated by the method of V. V. Krasnikov showed coincidence with experimental data.

show abstract

“…The study of drying kinetics was carried out on an experimental drying bench with automatic data collection. It allows for heat treatment with a drying agent at a temperature of 30-150 °C and a movement speed of 0.5-5 m/s [23].…”

Section: Methodsmentioning

confidence: 99%

Processing of Old Sludge Deposits Into Composite Fuel

Sniezkin,

Petrova,

Chmel

et al. 2024

Energ. Tech. & Res. Sav.

Self Cite

View full text Add to dashboard Cite

An urgent problem in Ukraine is overcrowded sludge sites with outdated sludge deposits. Due to the food problem, the world needs to maximize the release of land areas that have been under technical use and reclaim them for agricultural land. Therefore, the processing of obsolete sludge deposits makes it possible to reuse land for activated sludge or for reclamation for other needs of the country. The paper sets the task of studying obsolete sludge deposits to create a technology for their processing. Due to the high ash content of old silt deposits, it was proposed to combine them with peat and biomass. This will reduce ash content by 1.5–2.0 times. Since the created composite granules and the sludge deposits themselves have a high moisture of 61–68 %, the drying kinetics was studied on a convective experimental stand to reduce it. The research results showed that composite granules have a drying time of 28–39 minutes to a moisture content of 6–7 %, which is 2.3–3.1 times faster than peat. The equilibrium moisture content of composite granules was determined to be 6–7 % and not exceeding the standard moisture content for fuel granules. The heat of combustion of obsolete sludge deposits, which is 11.8 MJ/kg, and the resulting composite granules based on them, was determined, which is quite high and, depending on the composition, is in the range of 13.4–15.5 MJ/kg. During the study of the combustion of a separate fraction of aged sludge deposits, it was found that the combustion process occurs in the upward convective flow of the oxidant behind the double boundary layer. It was determined that the combustion rate is independent of its size and is the same, but the mass affects the time of ignition. Further studies on the combustion of composite granules showed that the combustion rate of the granules is significantly lower than the combustion rate of the original biomass, but the combustion rate of a separate fraction of silt deposits prevails. Bibl. 32, Fig. 8, Tab. 1.

show abstract

Investigation of the Kinetics of the Drying Process of Composite Pellets on a Convective Drying Stand

Cited by 6 publications

References 7 publications

Study of Drying of Solid Peat Residue and Composite Based on It

Study of Drying of Solid Peat Residue and Composite Based on It

Investigation of drying process kinetics of composite granules

Processing of Old Sludge Deposits Into Composite Fuel

Contact Info

Product

Resources

About