摘要
考察了三种市售柴油低温流动性改进剂(T1,T2,T3)对两种催化裂化柴油(柴油A,柴油B)的低温流动性的改善效果。在T2添加量为1000μg/g的条件下,两种柴油的冷滤点分别下降了21℃和12℃。在T2添加量为1000μg/g的基础上,加入酰胺化物助剂D,当助剂D的添加量为100μg/g时,柴油A的冷滤点上升了3℃,柴油B的冷滤点下降了4℃。采用XRD、气相色谱方法对柴油B以及蜡晶的碳数分布进行了分析,结果表明,低温流动性改进剂及其与助剂D复配均可以促进低碳数正构烷烃的析出,助剂可与部分蜡晶形成小晶粒的共晶体,使柴油低温流动性得到改善。
The effect of three commercial cold flow improvers（T1,T2 and T3）on the cold flow property of two FCC diesel fuels（A and B）was studied. When using cold flow improver T2 at a dosage of 1 000 μg/g the cold filter plugging point（CFPP）of diesel fuels A and B was decreased 21 ℃ and 12 ℃, respectively;as compared with using single T2 at a dosage of 1 000μg/g,an amidate flow aid D was also added at a dosage of 100μg/g,the CFPP of diesel fuels A and B was increased 3 ℃ and decreased 4 ℃, respectively. XRD and gas chromatography were used to analyze diesel fuel B and the carbon number distributions of the wax crystals. Results showed that both cold flow improver or the mixture of cold flow improver and flow aid could promote the precipitation of low carbon number normal alkane,and the flow aid could form fine crystal particles with certain wax crystals, thus the fluidity of diesel fuel at low temperature was improved.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2009年第5期61-65,共5页
Petroleum Processing and Petrochemicals
关键词
柴油
低温流动性改进剂
冷滤点
diesel fuel
cold flow improver
cold filter plugging point
