3. CONCLUSION
(1) The AC compressive strength has a good negative correlation with the open porosity ratio. The open pores with pore diameter of 2-500 nm have the most significant damage to the compressive strength. The open pore itself is a destructive factor of the compressive strength, not by destroying the strength of the coke skeleton.
(2) The AC abrasion resistance showed a positive correlation with the total porosity ratio. The closed pore and open pore both have damage to AC abrasion resistance. The open pores with pore diameters of 0-2 nm have the most significant damage to the abrasion resistance.
(3) The AC pore structure further develops during denitration-desulfurization-regeneration cycles, which brings about the mechanical strength indexes decrease. After recycled in the flue gas purification facility, the average compressive strength reduced to 70% of the original strength, while the abrasion resistance increased because AC surface was smoothed.
Acknowledgements: The authors would like to thank the financial support of Fundamental Research Funds for the Central Universities (Grant Number FRF-IC-18-010).