γ射线辐射脱除油品中的硫醇  

REMOVAL OF DODECANETHIOL IN SIMULATED PETROLEUM PRODUCT BY RADIATION OF GAMMA RAYS

作　　者：田扬捷[1] 晏乃强[1] 李道棠[2] 姚思德[3] 王文锋[3] 

机构地区：[1]上海交通大学环境科学与工程学院,上海200240 [2]上海交通大学生态与环境工程系,上海200240 [3]中国科学院上海原子核研究所,上海200180

出　　处：《化工学报》2003年第9期1279-1283,共5页CIESC Journal

基　　金：国家自然科学基金资助项目 (No 2 0 0 770 17)~~

摘　　要：提出利用γ射线辐射的方法对油品进行脱硫的新技术 ,并以十二硫醇为对象考察了主要工艺条件对脱硫效果的影响 .结果表明 :十二硫醇的降解率随辐射剂量的增加而上升 ,在总辐射剂量相同的情况下使用低剂量率进行辐照可得到较高的降解率 ;氧气对十二硫醇降解有明显的促进作用 ,在降解率为 90 %时有氧及无氧辐照所需的辐射剂量分别为 2 5 0kGy和 70 0kGy ;对硫醇的分析发现 ,有氧辐照时有硫酸根产生 ,无氧时则部分转化为硫化氢 。A novel desulfurization method for petroleum products by gamma rays radiation is put forward and investigated. The n-dodecanethiol (DCT) dissolved in n-dodecane was used as the simulated petroleum product. The results showed that the degradation efficiency of DCT was proportional to the radiation dose of gamma rays, and a lower dose rate seemed to correspond to higher degradation efficiency at the same dose. Degradation occurred under both circumstances with and without oxygen, while the demanded dose for the degradation efficiency of 90% was 250 kGy and 700 kGy, which implied that the degradation process was improved greatly by oxygen. Part of the end product of DCT degradation was sulphate with oxygen, and hydrogen sulfide was detected under the condition without oxygen.

关 键 词：石油脱硫 γ射线辐射 十二硫醇降解 

分 类 号：O641[理学—物理化学]