摘要
石油焦是炼厂劣质原油加工的副产物,其作为燃料来说具有较多的不足之处。利用高温气化技术可以实现石油焦的资源化再利用。文中对4种主流的气化反应机理进行对比分析,并结合现有的催化气化理论对气化反应过程中阴、阳离子及自由基对气化反应的影响机制进行讨论,对不同种类离子所适用的气化反应机理加以分类总结并指出存在的问题。指出阴、阳离子对石油焦气化反应影响较大,气化机理对于单一类型离子催化过程的作用机制解释较为合理,但对于不同种类离子复合后相互作用的现象解释不通。同时,石油焦中所含的一些重金属离子会抑制石油焦的气化反应活性,机理对于上述现象也并未深入研究。在此基础上,提出了气化反应中离子间的相互作用及重金属离子对气化反应的影响机理将是今后的研究重点。
Petroleum coke is a by-product of ill crude oil processing in refinery and it has a lot of disadvantages as fuel. With the high temperature gasification technology, however, the utilization of petroleum coke can be realized. Based on the existing catalytic gasification reaction mechanism, this paper makes a comparative analysis on the four mainstream mechanisms of petroleum coke gasification reaction. The influences of anion, cation and radical on the gasification reaction mechanisms have been discussed. Also, this paper makes a summary of existing problems and the applicable gasification mechanism for different types of ions. The mechanism of gasification is suitable for single ion catalysis, but not for the phenomenon of complex interaction with different types of ions. Meanwhile, some heavy metal ions in the petroleum coke can inhibit the gasification reactivity of the petroleum coke, and the mechanism has not been studied thoroughly. In conclusion, the interaction between ions in gasification reaction and the influence mechanism of heavy metal ions on gasification reaction will be the focus of future research.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2017年第6期2298-2303,共6页
Chemical Industry and Engineering Progress
关键词
石油焦
催化剂
离子
气化机理
反应
催化作用
petroleum coke
catalyst
ion
gasification mechanism
reaction
catalysis
