CATALYTIC CLEANING OF EMISSIONS FROM A CRYSTALLIZATION SECTION OF A NAPHTHALENE FRACTION

Abstract

The Naphthalene Fraction Crystallization Section (NCCS) is designed to separate naphthalene from the naphthalene fraction and ship it in liquid or solid form. The NCCS ventilation and storage equipment emissions are characterized by a high concentration of sublimated naphthalene and a low content of organic impurities, including phenol, hydrogen cyanide, ammonia, etc. The NCCS treats ventilation emissions from four units (hydraulic press-crystallizer-fan) with a capacity of 8,000 m3/h each; With two fans operating simultaneously, the emission volume will be 16,000 m3/h, emissions from 12 air vents of the storage equipment (two pressure tanks, three naphthalene melters, four naphthalene storage facilities, three press runoff collectors) with a volume of 528 m3/h. The basic process flow diagram of the UKNF and catalytic emission purification is presented.