Changes of the Microcosmic Structure in Combustion Process of Coke from Ethylene Cracking

In this paper, the property of coke from ethylene cracking and changes of its microcosmic structure in the combustion process with and without combustion-supporting agent were studied. The coke combustion rate at the end is much smaller than that at the beginning. Coke from ethylene cracking can't be exhausted by combustion, leaving 5% combustin residue. After the addition of combustion-supporting agent, the original microcosmic structure of coke is broken, thus not only increases the combustion rate, but also increases the burn-off rate of the coke.