Abstract：To improve thermal property of coke and decrease application cost, three new type coke deterioration inhibitor, A, B and ZP, were studied by comparing with H3BO3. The results indicated that ZP is the most effective deterioration inhibitor. Soaking and spraying method was compared in terms of deterioration inhibition, results show that soaking is more effective than spraying. Furthermore, to probe the mechanism of coke deterioration inhibition by ZP, scanning electron microscope were used to observe the coke mophology before and after spraying ZP. The diameter and depth of pores were smaller on the surface of coke treated by ZP, supporting that ZP can protect coke surface from CO2 corrosion. Preliminary evaluation showed that ZP was cheap and can bring out certain economic benefits.
2009, Vol. 44 
