Research On Coke Passivation Disposal

The test adopts technology of coke passivation disposal,takes AnGang, ShengMeng and BeiTai coke as the raw material, and takes boric acid, borax and ZBS as passivator, and then measured the coke reaction index(CRI) and coke strength after reaction(CSR) with passivation and non-passivation separately. A series of experimentation to review the passivator adsorptive capacity , the passivator breed and coke quality influenced to the coke thermal performances.As the experimental result indicates,the boric acid, borax, ZBS and SiO₂ have passivation results to the coke thermal performances,The passivator adsorptive capacity has the very important effect to improve coke thermal reactivity, The passivator adsorptive of coke has the saturated point. The different passivators have various saturated point on adsorptive of coke, The different passivators have various passivation results on coke, The boric acid is the strongest in passivation, the CRI can be most decreased 13.84% and CSR increase 29.34%, The SiO₂ is the lowest in passivation, the CRI can be most decreased 3.47% and CSR increase 4.41%.The coke quality has the obvious effect on passivation results, the poor quality coke have the obvious passivation results. Comparing with non-passivation, after passivation the structure of stomata and microstructure of coke obviously changed.