ANALYSIS OF OXIDATION REFORMING OF FORMED -COKE TAR AND ITS APPLICATION TO BRIQUETTING BINDER PRODUCTION FOR FORMED-COKE PROCESS

Theoretical and experimental studies were carried out to quantitativel y understand the effect of oxidation reforming conditions on the prope rties of the reformed tar produced in the formed coke process (FCP tar ). The oxidation reaction of the FCP tar was a consecutive first order reaction comprising two steps. First, reactive fragments were generat ed as free radicals by breakage of the alkyl chain of aromatic compoun ds. The FCP tar was then polymerized by recombination of these fragmen ts. The activation energies of first and second steps were 43.5KJ/mol and 18.8KJ/mol, respectively. At 473K the compressive strength of briq uettes of the reformed tar, which had a 18 similar to 20% toluene inso luble content and viscosity of 1 similar to 8 Pa . s, was almost equal to that of briquettes of the conventional coke oven pitch. On the bas is oi this theoretical and experimental analysis, a procedure was esta blished for determining the air blowing conditions for preparing FCP t ar for use as a formed coke binder.