Ecology 19 1) obtaining dichloroethane (DCE) by direct and oxidative chlorination of ethylene using iron (III) chloride and copper (II) chloride as catalysts;2) high-temperature cleavage of hydrogen chloride from DCE with the formation of VC.In the system of distillation columns, raw DCE is dehydrated and cleaned of "light" and "heavy" organochlorine by-products called organochlorine waste (OCW -organo-
During organochlorine wastes thermal utilization formed at direct chlorination of ethylene to 1,2-dichloroethane in the production of vinyl chloride at Karpatnaftohim LLC, the ash is formed, which clogs gas pipelines and heat exchange elements of the steam generator, causes disruption of normal technological process and leads to emergency shutdowns.The composition of this ash was determined by chemical methods of quantitative analysis and flame photometry for such macrocomponents as Fe2O3 (28%) and FeCl3 (5%), as well as magnesium chlorides (30%) and sodium (4%), the rest (about 32% ) probably resinous highly chlorinated unburned components of VAT residues, carbon particles and nitric acid-insoluble iron compounds. Utilization methods and possible ways to reduce the amount of ash from the organochlorine waste combustion formed at the production of vinyl chloride are briefly considered.
one of the main challenges for the Ukrainian industry is adopting of the modern environmental standards of production. One of the most promising ways of reaching of those aims is improvement of existing technological schemes by use of new catalytic systems.
new improved catalytic system for the process of the direct chlorination of the ethylene is proposed and investigated. New catalytic system increases productivity of the reactive volume and allows to decrease negative influence of production on the environment.
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