Preparation of TiCl_4 with multistage series combined fluidized bed  

多级复合流化床制备四氯化钛(英文)

作　　者：袁章福[1] 朱元晴[2] 席亮[3] 熊绍锋[3] 徐秉声[1] 

机构地区：[1]北京大学工学院,能源与资源工程系,北京100871 [2]北京大学环境科学与工程学院,环境科学系,北京100871 [3]中国科学院过程工程研究所,北京100190

出　　处：《Transactions of Nonferrous Metals Society of China》2013年第1期283-288,共6页中国有色金属学报（英文版）

基　　金：Project(2008AA06Z1071) supported by the National High-Tech Research and Development Program of China;Project(20306030) supported by the National Natural Science Foundation of China

摘　　要：In order to solve the agglomeration problem in TiCl4 preparation,a new test in a multistage series combined fluidized bed was studied on a pilot scale.The pilot plant can make full use of titanium slag with a high content of MgO and CaO as the feedstock.Several experimental parameters such as chlorine flow and reaction temperature were discussed and the morphology and components of reaction product were analyzed.According to the results,the conversion rate of TiO2 is up to 90%.It is found that the combined fluidized bed has good anti-agglomeration ability because the accumulation of MgCl2 and CaCl2 on the surface of unreacted slag was carried out of the reactor.为了解决四氯化钛制备过程中的粘结问题,采用复合流化床新工艺进行中试试验制备四氯化钛,可以有效利用镁钙含量大于2.5%的高钛渣原料。对氯气流量、流态化温度等参数的影响进行研究,并对反应产物的形貌进行分析,同时计算了反应效率。结果表明:TiO2的转化率达到90%,通过检测发现收尘渣表面富集MgCl2和CaCl2,而流化床中未出现粘结,说明该流化床具有一定的抗粘结能力。

关 键 词：combined fluidized bed titanium tetrachloride anti-agglomeration MgO CAO MGCL2 CACL2 

分 类 号：O614.411[理学—无机化学]