No abstract

No abstract

The aim of the work is development of technology of adsorptive, catalytical-chemisorptive purification of gas emissions from sulfur dioxide with simultaneous separation of sulfonic acids and sulfoxides as reaction products. For this research, the fractions of non-perforated cenospheres from the combustion of coal of Ekibastuz field (Kazakhstan) at the Almaty TPP-2 (Kazakhstan) have been applied. The method of microspherical sorbent obtaining from technogenic aluminosilicate raw material -energetic ash of Almaty TPP-2 has been elaborated. The aluminosilicate composite was studied after modification in the process of SO 2 oxidation by the oxygen in stationary conditions in aqueous solution, in the kinetic mode and in the temperature range of 40-60°C. The conditions of selective oxidation of SO 2 (100 %) to give the sulfuric acid as a product were optimized. The catalysts elaborated were tested in the process of treatment of gases from SO 2 at a pilot vortex stirrer on the model gas mixtures SO 2 -Ar with a content of SO 2 up to 1.0 % vol. The results obtained have demonstrated that degree of SO 2 removal reached 87-95%. The structure and composition of the obtained microspherical composite is studied. The iron nanostructural distribution in aluminosilicate is proved with the help of different research methods: IR-and EPR-spectroscopy, X-ray diffraction, SEM, elemental and Chemical analysis.

No abstract

No abstract