氯代芳烃改性煤沥青及其针状焦制备研究  

STUDY ON MODIFICATION OF COAL TAR PITCH WITH CHLORINATED AROMATIC COMPOUNDS ANDPREPARATION OF NEEDLE COKE

作　　者：苏蕾[1] 曹青[1] 解小玲[2] 郭良成[1] 

机构地区：[1]太原理工大学化学化工学院,太原硕士生030024 [2]太原理工大学材料科学与工程学院,太原博士生030024

出　　处：《煤炭转化》2013年第3期60-64,共5页Coal Conversion

基　　金：国家自然科学基金资助项目(51174144);山西省科学技术发展计划项目(201103210392)

摘　　要：以中温煤沥青为原料,三种氯代芳烃为改性剂,对甲基苯磺酸为催化剂,对煤沥青进行了改性研究.改性煤沥青通过FT-IR和TG进行分析,中间相结构采用光学偏光显微镜进行了观察,针状焦采用XRD分析.结果表明,不同氯代芳烃化合物对改性煤沥青炭化产率有着不同的影响,其光学组织结构中的纤维成分均得到提高:其中,经3-氯硝基苯改性后的炭化产率增加了42.5%,其光学组织呈典型的长程纤维结构;而XRD分析亦表明,002峰位往高角度方向迁移,峰形更加尖锐突出,Lc明显增大都表明石墨化进行较充分.With three kinds of different atoms chlorinated aromatic compounds in the presence of p-toluene sulfonic acid, coal tar pitch has been modified successfully. The properties of the modified coal-tar pitch （MCTP） were observed by Fourier transform infra-red spectroscopy and thermo gravimetric analyzer （TG） respectively. Polarized microscope was employed to study its mesophase structure of the MCTP; and the crystallinity of the needle coke obtained through MCTP was investigated by X-ray diffractometer （XRD）. The results show that the carbonization yield of MCTP1 produced by 1-chloro-3-nitrobenzene as a modified agent is the highest among the selected modified agents, which arrive at 50. 1%. And the optical structure of its mesophase emerges a typical long fibrous organization. For the needle coke from MCTP,, the results of XRD showed that the 002 peak moves to higher angle and becomes sharper, and Lc increases signifi- cantly comparing to the coke from MCTP, which was not modified. It indicates that the degree of graphitization has been enhanced greatly after modification.

关 键 词：中温煤沥青 氯代芳烃化合物 中间相 针状焦 

分 类 号：TQ522.65[化学工程—煤化学工程]