TECHNOLOGY OF OBTAINING NEW MATERIALS FOR ADSORPTIVE HEAT ENERGY TRANSFORMATION TYPE OF «SILICA GEL – CRYSTALLINE HYDRATE»

Authors

  • Yana Serhiienko State Higher Education Institution ‘Ukrainian State University of Chemical Engineering’, Ukraine
  • Kostyantyn Sukhyy State Higher Education Institution ‘Ukrainian State University of Chemical Engineering’,
  • Elena Belyanovskaya State Higher Education Institution 'Ukrainian State University of Chemical Engineering', Ukraine
  • Elena Kolomiyets State Higher Education Institution 'Ukrainian State University of Chemical Engineering',
  • Mykhailo Gubynskyi National Academy of Metallurgy of Ukraine, Ukraine
  • Olga Tkalya State Higher Education Institution 'Ukrainian State University of Chemical Engineering',
  • Irina Sukha State Higher Education Institution 'Ukrainian State University of Chemical Engineering',
  • Oleksandr Zaichuk State Higher Education Institution 'Ukrainian State University of Chemical Engineering',

DOI:

https://doi.org/10.15421/081924

Keywords:

heat storage, adsorptive heat energy transformation, composite adsorbent, sol – gel technology.

Abstract

This article is focused on sol-gel technology of industrial production of composite sorbents «silica gel – sodium sulphate» and «silica gel – sodium acetate», which includes the next stages: preparation of aqueous solution of silicate glass and polymer quaternary ammonium salt (PQAS), formation of nuclei of the silicate phase, formation of silicon-oxygen matrix, drying and fractionation of sorbent. According to the developed technology, sorbents were prepared with a granula size of 3 – 5 mm. Bulk density is stated to be of 0.72 g/cm3 and 0.65 g/cm3 for composites «silica gel – sodium sulphate» and ‘silica gel – sodium acetate’. It is shown that composite sorbents are characterized by high water adsorption at the level of 0.42 – 0.66 g/g. Temperatures of regeneration of composites «silica gel – sodium sulphate» and ‘silica gel – sodium acetate’ are stated to be of 90 °C and 60 °C. Heats of adsorption of composites «silica gel – sodium sulphate» and «silica gel – sodium acetate» are 2200 kJ/kg and 1400 kJ / kg, respectively.

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Published

2020-01-20

Issue

Vol. 27 No. 2 (2019): Journal of Chemistry and Technologies

Section

Chemical Technology

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