摘要
考察了辽河减压渣油在吸附分离、酸性溶液萃取和沥青质轻度降解过程中金属铁的分布和转移情况。结果表明,辽河减压渣油中有近80%的铁富集在胶质和沥青质中,在柱残留胶质中铁的比例最高,以侧链较短的羧酸盐或酚盐形式存在;在沥青质中有41.1%的铁被双氧水萃取出来,这部分铁可能是连接在芳环的侧链上或是被包裹在沥青质大分子中。
The distribution and transfer character of iron in Liaohe vacuum residue were studied by absorption-separation, acidic solution extraction and mild chemical oxidative degradation of asphaltene. The results showed that nearly 80% of the iron concentrated in asphaltene and resin fractions. The percentage of iron in the residual resins of alumina column was the highest（37.2%）and it was existed in the forms of carboxylates and phenoxides with short branched chain： 41.1% of the iron in asphaltene could be extracted by hydrogen peroxide, these iron atoms were probably linked to the branched chain of asphaltene or included in the macro molecules of asphaltene.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2007年第11期60-64,共5页
Petroleum Processing and Petrochemicals
关键词
减压渣油
铁
分布
vacuum residue
iron
distribution
