Preparation of needle coke from fluid catalytic cracking recycle oil
Using fluid catalytic cracking recycle oil as raw materials,the extracted oil rich in aromatics was separated using furfural extraction process,and then used as raw material to prepare needle coke through kettle coking process,and the microstructure and crushing strength of needle coke were analyzed.The results showed that the total mass fraction of three,four,and five ring aromatic hydrocarbons in the extracted oil obtained from a single furfural ex-traction was 48.7%,which increased compared to the earlier extraction.The residual carbon mass fraction in the extracted oil obtained from secondary furfural extraction was 3.3%,and the total mass fraction of aromatic hydrocarbons in the three,four,and five rings was 61.4%,all of which met the requirements of needle coke raw material indicators.The needle coke prepared from desorbed oil slurry had the high-est yield of 56.42%.The yield of needle coke pre-pared from secondary furfural extraction oil as raw material was 46.28%,which met the requirements of negative electrode materials for lithium-ion batter-ies.The embedded structure in the microstructure was significantly reduced,the domain structure size was large,the fiber quality was high,and the proper-ties were better.
万方数据
维普
