减压渣油搀兑FCC油浆制备针状焦  

PREPARATION OF NEEDLE COKE FROM FCC SLURRY BLENDED VACUUM RESIDUE

作　　者：查庆芳[1] 张玉贞[1] 郭燕生[1] 吴明铂[1] 王辉[1] 郑中平 

机构地区：[1]石油大学重质油研究所重质油加工国家重点实验室,山东东营257062

出　　处：《炭素技术》2002年第4期10-14,共5页Carbon Techniques

基　　金：国家自然科学基金项目 (2 0 176 0 2 9)

摘　　要：将齐鲁石化胜利炼油厂的催化油浆和胜利减压渣油以不同的比例混合 ,然后在 4 90℃和 0 .8MPa的条件下炭化制备针状焦 ,所得针状焦的光学结构各不相同 ,可分为 4个等级 ,其中 ,粗镶嵌和细镶嵌结构随着减压渣油的增加而增加。这意味着FCC油浆修饰了减压渣油的反应性 ,降低了减渣的热解速率。由此可见 ,混合物料的炭化反应性及混合比例 ,很大程度上影响了大域融并中间相的性质 。The carbonization of a fluidized catalytic cracking(FCC) slurry from Shengli Refinery blended with vacuum residue(VR) in different ratios was conducted at 490 ℃ and 0.8 MPa.The resultant cokes were evaluated in terms of their anisotropic texture. According to the optical texture, the cokes can be classified into 4 grades. The coarse and fine mosaic texture in these four grade cokes increase as the ratio of VR in the blend increases. This means that the FCC slurry in the blend helps to modify the carbonization activity of VR and to reduce the rate of its thermo cracking reaction. The nature of bulk mesophase from aromatic component which essentially define the quality of needle cokes, depends strongly on the carbonization reactivities of the blended feedstocks.

关 键 词：减压渣油 搀兑 FCC油浆 制备 针状焦 共炭化 中间相 镶嵌结构 

分 类 号：TE626.87[石油与天然气工程—油气加工工程]