Gas Formation Reactions in the Raw Mixture Based on TPP Ash

• Autorzy: Koshlak Hanna

Identyfikatory

DOI

10.54740/ros.2021.007

• Języki publikacji: EN

Abstrakty

EN

The article discusses the physicochemical mechanisms of the effect of chemical reagents on the processes of swelling of the raw mixture based on the ash of thermal power plants. The process of structure formation in such mixtures occurs as a result of physicochemical transformations of its constituent components. To intensify gas evolution and obtain materials of a porous structure, the presence of a gas former is necessary. The author has analysed the possibility of creating a porous structure in a raw mixture based on ash with the introduction of various gas formers or their formation as a result of exchange reactions. The main chemical compounds contributing to pore formation have been determined. To form a given structure, it is proposed to control chemical transformations at the stage of swelling. To study the processes of intensification of gas evolution, the author proposes to investigate the mechanisms of the influence of mineral fillers and chemical reagents on swelling processes based on the analysis of the Gibbs equation. The parameters of the Gibbs equation are obtained, by which it is possible to determine the probability of the occurrence of chemical reactions with the proposed chemical agents for the formation of gas bubbles with (pores) in the raw material.

Słowa kluczowe

EN

swelling; porous structure; ash of thermal power plants

• Wydawca: Politechnika Koszalińska
• Czasopismo: Rocznik Ochrona Środowiska
• Rocznik: 2021
• Tom: Tom 23
• Strony: 106--116
• Opis fizyczny: Bibliogr. 8 poz., tab.

Twórcy

autor

Koshlak Hanna

• Kielce University of Technologies, Poland

• https://orcid.org/0000-0001-8940-5925

Bibliografia

• Ayapov, U.A. (1982). Binders and concretes from mineral wastes of the industry of Kazakhstan /U.A. Ayapov S.A. Arkhabaev, Z.B. Shormanova. - А.: Nauka, 164.
• Bellmann, F., Stark, J. (2009). Activation of blast furnace slag by a new method. Cem. Concr. Res., 39, 644-650.
• Bielecka, A., Kulczycka, J. (2020). Coal Combustion Products Management toward a Circular Economy – A Case Study of the Coal Power Plant Sector in Poland. Energies, 13, 3603.
• Koshlak, H., Pavlenko, A. (2019). Method of formation of thermophysical properties of porous materials. Rocznik Ochrona Srodowiska, 21(2), 1253-1262.
• Lee, J., Kim, T., Sung, M., Vu, H.H.T., Shin, K.N., Ahn, J.W. (2020). An Integrative Approach to International Technology Transfer for Recycling Vietnam Coal Ash with Consideration of the Technological, Legal, and Network Perspectives. Sustainability, 12, 771.
• Pavlenko, A., Koshlak, H. (2019). Heat and mass transfer during phase transitions in liquid mixtures. Rocznik Ochrona Srodowiska, 21(1), 234-249.
• Polettini, A. (2009). Chemical Activation in View of MSWI Bottom Ash Recycling in Cement-Based Systems/A. Polettini, R. Pomi, E. Fortuna. J. Hazardous Matter. 162(2-3), 1292-1299.
• Poon, C.S. (2001). Activation of fly ash/cement systems using calcium sulfate anhydrite (CaSO[4])/C.S. Poon, S.C. Kou, L. Lam, Z.S. Lin. Cem. And Concr. Res. 31(6), 873-881.