Method of inhibiting deposits in coke oven gas processing equipment

Abstract

A method of inhibiting and/or removing deposits from coke oven gas handling equipment is disclosed which comprises the addition of a treatment combination of a heterocyclic nitrogenous compound such as quinoline and 2-butoxyethanol to the flushing liquor used to cool coke oven effluent gases.

What is claimed is:  
     
         1 . A method of inhibiting fouling deposit formation in conduits, lines and equipment in contact with flushing liquor in a coke oven plant comprising adding to said flushing liquor a treatment combination of a heterocyclic nitrogenous compound and 2-butoxyethanol in an amount sufficient to inhibit fouling deposit formation.  
     
     
         2 . The method of  claim 1  where in the ratio of heterocyclic nitrogenous compound to 2-butoxyethanol in said treatment combination is from 50:50 to 10:90 percent by weight.  
     
     
         3 . The method of  claim 1  wherein the ratio of heterocyclic nitrogenous compound to 2-butoxyethanol in said treatment combination is 25:75 percent by weight.  
     
     
         4 . The method of  claim 1  wherein said heterocyclic nitrogenous compound is quinoline.  
     
     
         5 . The method of  claim 1  wherein said treatment combination is added to said flushing liquor in a concentration of from about 0.5 parts per million to 5.0 parts per million.  
     
     
         6 . A method of cleaning conduits, lines and equipment in contact with flushing liquor in a coke oven plant comprising adding to said flushing liquor a treatment combination of a heterocyclic nitrogenous compound and 2-butoxyethanol in an amount sufficient to remove fouling deposits.  
     
     
         7 . The method of  claim 6  where in the ratio of heterocyclic nitrogenous compound to 2-butoxyethanol in said treatment combination is from 50:50 to 10:90 percent by weight.  
     
     
         8 . The method of  claim 6  wherein the ratio of heterocyclic nitrogenous compound to 2-butoxyethanol in said treatment combination is 25:75 percent by weight.  
     
     
         9 . The method of  claim 6  wherein said heterocyclic nitrogenous compound is quinoline.  
     
     
         10 . The method of  claim 6  wherein said treatment combination is added to said flushing liquor in a concentration of from about 0.5 to about 5.0 parts per million.