摘要
对四种原油蜡含量标准分析方法进行比较,发现得到的结果差别明显,并具有一定的规律性。四种方法测定原油蜡含量的数值从大到小的顺序为UOP46>SY/T0537>SY/T7550>ГОСТ11851。产生这些差别的原因主要是四种标准方法的脱蜡条件及脱蜡溶剂的组成都有一些不同,每种脱蜡溶剂在相应脱蜡条件下对蜡的溶解性不同造成的。对所得蜡样品组成分析的结果表明,蜡的溶解性差异主要来自于小于C25的正构烷烃和所有非正构烷烃。
Four standard methods （SY/T 0537, SY/T 7550, ГОСТ 11851 and UOP 46） for determining wax content in crude oil are compared. Significant differences and certain regularities among the wax content results obtained by these methods are observed. The wax contents obtained from high to low are in the order of UOP 46〉 SY/T 0537〉 SY/T 7550〉 ГОСТ 11851. It can be seen that in these four methods, the dewaxing conditions, solvent compositions and the solubility of wax in solvent are varied, which leads to the differences of results obtained by each method. Furthermore, based on the analysis of wax compositions it is found that the differences are mainly caused by the various solubilities of ≤C25 n-paraffins and other hydrocarbons in the individual solvent under individual dewaxing conditions.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2010年第6期72-76,共5页
Petroleum Processing and Petrochemicals
关键词
原油
蜡
分析方法
crude oil： wax
analytical method
