Wax Behavior in Crude Oils by Pour Point Analyses

被引：23

作者：

Oliveira, Lize M. S. L. ^{[1
,2
]}

Nunes, Rita C. P. ^{[3
]}

Ribeiro, Ygor L. L. ^{[1
]}

Coutinho, Dayane M. ^{[4
]}

Azevedo, Debora A. ^{[4
]}

Dias, Julio C. M. ^{[3
]}

Lucas, Elizabete E. ^{[1
,3
]}

机构：

[1] Univ Fed Rio de Janeiro, Lab Macromol & Coloides Ind Petroleo LMCP, Inst Macromol, Av Horacio Macedo 2030,Bloco J, BR-21941598 Rio De Janeiro, RJ, Brazil

[2] Ctr Pesquisas & Desenvolvimento Leopoldo Amer Mig, Av Horacio Macedo 950,Cidade Univ, BR-21941915 Rio De Janeiro, RJ, Brazil

[3] Univ Fed Rio de Janeiro, COPPE PEMM LADPOL, Av Horacio Macedo 2030,Bloco F, BR-21941598 Rio De Janeiro, RJ, Brazil

[4] Univ Fed Rio de Janeiro, Lab Apoio Desenvolvimento Tecnol LADETEC, Inst Quim, Av Horacio Macedo 1281, BR-21941598 Rio De Janeiro, RJ, Brazil

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2018年 / 29卷 / 10期

关键词：

crude oils; pour point; yield stress; gas chromatography; waxes; 2-DIMENSIONAL GAS-CHROMATOGRAPHY; YIELD-STRESS; DEPOSITION; INHIBITORS; PETROLEUM; PRESSURE; GELATION; GELS;

D O I：

10.21577/0103-5053.20180092

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Crude oils containing large quantities of waxes, and in situations where sudden temperature drops occur, a crystalline network can be formed, generating flow difficulties in production, transfer and offloading lines. Despite the scientific and economic importance of this phenomenon, correlations between the behavior of petroleum in relation to its pour point are scarce in the literature. In this work, nine crude oil samples were characterized regarding density, water content, wax fraction (one- and two-dimensional chromatography), pour point, yield stress and wax appearance temperature. The results showed that the storage conditions and oil characteristics had a strong influence on the pour point. Yield stress was influenced by initial temperature of the sample, cooling rate and shear rate during cooling. Finally, the content of aromatic compounds in oil with low concentration of n-alkanes can contribute to increase the pour point.

引用

页码：2158 / 2168

页数：11

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