催化裂化油浆溶剂抽提及其中间相沥青

考察了FCC油浆及其在不同温度、不同剂油比条件下抽出油的组成和性质。确定了最佳抽提条件为50℃，剂油比为2：1。计算所得选择性表明糠醛是分离FCC油浆的有效溶剂。抽出油形成的中间相沥青，具有良好的可溶性，显现广域流线型大融并体，分子排列规整，具有较佳的流动性，是一种易石墨化炭。抽余油形成的中间相沥青，显示粗镶嵌结构，可溶性较差，难以制取上佳炭材料，但可回收作催化裂化原料。

EXTRACTION OF FCC SLURRY WITH SOLVENT AND THE MESOPHASE PITCH DERIVED FROM EXTRACT

The properties of the catalytic cracking slurry(FCC slurry)extracted with furfurol at different temperatures and in solvent-slurry ratio were determined.The optimum conditions for solvent extraction are 50 ℃ and 2∶1 solvent-slurry ratio.The selectivity calculated shows that furfurol is an excellent extraction solvent for separating FCC slurry.The mesophase pitch derived from the extract with high content of soluble mesophase constituents will improve the molecular orientation and exhibit optically coarse fibrous texture with better fluidity during liquid phase carbonization that is good for making graphitizing carbon.The mesophase pitch obtained from the extraciton residue oil with coarse mosaic texture and lower soluble mesophase constituents is not a good precursor for excellent carbon material,but it is a good feedstock for FCC instead.