METHOD TO EXTRACT HEAVY COAL-TAR PRODUCTS FROM WATER-RESIN-TAR MIXTURE Russian patent published in 1995 - IPC

FIELD: coke-chemical industry. SUBSTANCE: supernatant water, that has heavy coal-tar products and resin, is fed in tar well to settle. Heavy coal-tar products are settling on bottom of tar well and are removed from mixture layer there along inclined wall of well by scraper conveyer. Heavy coal-tar products with 60 resin share in process of transportation along area of inclined wall located over mixture layer are washed by hot supernatant water to withdraw resin. After heavy coal-tar products washing supernatant water and withdrawn resin are pouring back into settler. Washed heavy coal-tar products with 26 resin share are going into heavy coal-tar products collecting bunker, from which then are unloaded. EFFECT: method allows to decrease coal-tar losses, to decrease volume of difficult to utilize heavy coal-tar products and to simplify their further processing method. 1 dwg