PURIFICATION OF VENTILATION AIR FROM VOLATILE SOLVENTS - METHOD FOR ESTIMATION OF SOME VALUES

摘要

The adsorption method for capture of the steams from volatile solvents is most appropriate for air basin and human health protection. Particular model for purification of steam - air mixture from ethyl alcohol is developed. The adsorption isotherms of different type's activated carbon using as an adsorbent standard substance benzene and ethyl alcohol are drew up. The choice of the adsorbent - activated carbon, make ARB, reduction type is made on their base. The following values are estimated: the quantity of adsorbent in solid and gas phase, the basic elements of the static layer -porosity, specific geometric surface and Active length of the adsorbent layer, mass transfer and diffusion coefficient, etc. On their base a practical method is developed, for determination of the height of the adsorption layer as well as duration of the adsorption process. Using this method, it is possible to make prompt choice of the dimensions of the adsorbents and to choose rational cyclic working regime assuring the continuity of the adsorption purification of ventilation flows.