Methods of Neutralization of Air Emissions from the Production of Butadiene-α-Methylstyrene Rubbers

Abstract

A theoretical model of a two-stage installation for neutralizing impurities of α-methylstyrene (AMS) and suspended solids in the exhaust air
produced from dryers at production of butadiene-α-methylstyrene rubbers (SBSK) is proposed. The analysis of existing methods for cleaning
industrial air emissions is carried out. At the first stage the usually employed methods for the removal of the impurities (individual particles
as well as ammonium) are in use. The range of concentration of impurities in air emissions at SBSK production is presented. The oxidation
and sorption processes used at second stage to reduce the content of AMS vapors in exhaust gases are compared. The advantage
of the method of adsorption of AMS on the surface of active carbons (AC), as the least energy-consuming is shown. The isotherms of adsorption
of AMS vapors on AC of different brands from a vapor-air mixture were calculated with the use of the model based on adsorption on this AC the
equilibrium concentrations of benzene vapors. The duration of the periodic adsorption process for 4th brands of AC and the number of devices
sufficient for the absorption of AMC from the exhaust air of rubber dryers have been determined. Model is oriented on OOO Togliattikauchuk.