熔融盐中甲苯的裂解实验研究  

Experimental study on toluene cracking in eutectic salts

作　　者：王小波[1,2] 赵增立[1,2] 刘安琪[1,2] 李常河[1,2,3] 李海滨[1,2] 陈勇[1,2] 

机构地区：[1]中国科学院广州能源研究所,广东广州510640 [2]中国科学院可再生能源与天然气水合物重点实验室,广东广州510640 [3]中国科学院研究生院,北京100049

出　　处：《燃料化学学报》2011年第9期675-681,共7页Journal of Fuel Chemistry and Technology

基　　金：国家重点基础研究发展规划(973计划;2011CB201500);国家自然科学基金(50776091);中国科学院知识创新工程重要方向(KSCX2-EW-G-1-5)

摘　　要：在固定床内研究了甲苯裂解特性,考察了熔融盐种类、裂解条件对甲苯裂解率、气体产物及苯产率的影响。结果表明,熔融盐对甲苯裂解有明显的催化作用,添加熔融盐时,相同裂解温度下甲苯裂解率明显提高。在71%Na2CO3+29%K2CO3(NK)盐和8.3%Na2CO3+91.7%NaOH(NN)盐中800℃催化裂解时,与热裂解相比,甲苯裂解率分别提高27%和46%,苯产率明显减少。NN盐催化裂解时,750℃后产物中的氢气主要来源于裂解碳与NN盐的反应。The toluene cracking experiments were carried out in an eutectic salt reactor.Catalytic effects of NN salt（8.3% Na2CO3＋91.7% NaOH） and NK salt（71% Na2CO3＋29% K2CO3） on the toluene cracking rate,gas product yield and benzene yield were investigated.The results show that the eutectic salts have obvious catalyses on the toluene cracking.When cracking at 800 ℃ with NK salt and NN salt,the toluene cracking rates are increased by 27% and 46%,respectively,compared with thermal cracking.And the benzene yield is greatly reduced.When cracking with NN salt at a temperature higher than 750 ℃,H2 in gas product is mainly from the reaction between NN slat and the cracking tar.

关 键 词：甲苯 熔融盐 裂解 

分 类 号：TK6[动力工程及工程热物理—生物能]