Catalytic neutralization of gas emissions in the manufacture of pharmaceutical preparations

¹ Uzbek Scientific Research Institute оf Chemistry and Pharmaceutics оf name A.Sultanov, 40, Durmon st., Tashkent, 100040, Uzbekistan
² Tashkent pharmaceutical Institute, 45, Oybek st., Tashkent, 100015, Uzbekistan
³ Institute of Pharmaceutical Education and Research, 46th, Yunusabad district, 19th, Tashkent, 100114, Uzbekistan

Abstract

Environmental protection in the Republic of Uzbekistan with a developed chemical, petrochemical, metallurgical and pharmaceutical industries is an important problem of our time. To solve it, a domestic copper-chromite catalyst “Chemex-203” was previously developed, which was operated for a long time in an energy-saving reversible reactor RKR- 10 in the process of catalytic neutralization of ventilation emissions of highly toxic styrene, toluene and acetone vapors on the territory of the “Hobos-TAPO” joint venture in Tashkent. This paper is devoted to solving a two-sided environmental problem - obtaining copper-chromite catalysts using toxic wastes of local industry for thermal catalytic neutralization of gaseous emissions of volatile organic compounds typical of the pharmaceutical and chemical industries. The conducted studies make it possible to 100% replace imported aluminum hydroxide in the composition of the aluminum-titanium carrier for the copper-chromite catalyst for the complete oxidation of toxic emissions with the intermediate product of the processing of spent alumina adsorbent, including gel-like pseudoboehmite. The resulting catalyst is distinguished by good mechanical strength, chemical and thermal stability and allows highly efficient neutralization of combustible toxic substances in the composition of various gas emissions.