University Links: Home Page | Site Map
Covenant University Repository

A study on the use of plant seed oils, triethanolamine and xylene as flow improvers of Nigerian waxy crude oil

Akinyemi, Olusegun Peter and Udonne, Joseph Denis and Efeovbokhan, Vincent Enon (2016) A study on the use of plant seed oils, triethanolamine and xylene as flow improvers of Nigerian waxy crude oil. Journal of Applied Research and Technology, 14. pp. 195-205.

[img] PDF
Download (1061Kb)

Abstract

Chemical methods are the most convenient and economical for wax precipitation and deposition prevention. The chemical additives so far inuse have varied limitations, ranging from high cost to limited spread of crude oil that a particular additive can handle. The influence of cheapernatural chemicals, obtained from plant seeds (jatropha – JSO, rubber – RSO and castor – CSO) on the rheological properties and wax depositiontendencies of Nigerian waxy crude oil were investigated. Previously tested synthetic chemical additives (triethanolamine – TEA and xylene) weresimultaneously examined too on the crude oils for comparative study. Four different crude oil samples obtained from Niger Delta region of Nigeriaused for the study were characterized to obtain their hydrocarbon composition, wax content, pour points, viscosities, specific gravity and APIgusing standard methods. The rheological properties such as apparent viscosity, plastic viscosity, yield stress were determined for the crude oilsdoped and undoped with the chemical additives using Fann V-G Standard Viscometer. The results obtained revealed that oils from the three seedscould be used as flow improvers and pour depressants for Nigerian waxy crude oil. Jatropha and castor seed oils depressed the pour point than thepreviously investigated triethanolamine. They are capable of depressing the pour point up to about 17◦C, and they can also reduce the viscosity ofthe waxy crude oil appreciably within 0.1–0.3% (v/v) dosage concentration. Also, CSO could exhibit as high as 77.7% paraffin inhibition efficiency(PIE) and JSO 73.5% at low concentration of doping.All Rights Reserved © 2016 Universidad Nacional Autónoma de México, Centro de Ciencias Aplicadas y Desarrollo Tecnológico. This is anopen access item distributed under the Creative Commons CC License BY-NC-ND 4.0.

Item Type: Article
Uncontrolled Keywords: Seed oils; Waxy crude oil; Inhibition; Rheological properties; Pour point; Viscosities
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 29 Aug 2016 12:13
Last Modified: 29 Aug 2016 12:13
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/7005

Actions (login required)

View Item View Item