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应用正交实验设计法研究石蜡基高蜡原油微波破乳规律 认领 被引量:4

EXPERIMENTAL STUDY ON THE MICROWAVE-DEMULSIFICATION FOR HIGH-WAX CRUDE OIL BY USING ORTHOGONAL DESIGN METHOD
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摘要 原油脱盐、脱水是石油工业中不可缺少的环节。我国开采的原油以石蜡基高蜡原油居多,石蜡基高蜡原油具有含蜡高、黏度大、凝点高和低温流动性差等特点,形成的原油乳状液异常稳定,破乳难度极大。在石蜡基原油体系中添加乙酸钠,可以增加体系对微波的吸收能力,加大油、水密度差,进而提高微波辐射处理的脱水率。采用正交实验设计法,研究了乙酸钠存在下大庆石蜡基高蜡原油的微波辐射破乳规律。结果表明,添加极少量的乙酸钠就能显著提高石蜡基高蜡原油乳状液的破乳效果。利用SH9402微波反应系统,在微波功率225W、系统压力0.7MPa、恒压时间12min、剂/油质量比0.05的条件下,含水质量分数50%的大庆石蜡基高蜡原油乳状液脱水率可达95.83%。 The water in crude oil is greatly harmful to preservation, transportation, quality of products, so dewatering and desahing of crude oil are very necessary for oil industry. Now in China most of the exploitation oil are paraffin base crude oil with high wax content, high solidifying point, high viscosity and bad fluidity in low temperature, which makes more difficult for oil-water emulsion system to demulsify. By the method of microwave radiation and addition of CH3COONa into sample, good dewatering efficiency was obtained. The rule of microwave-demulsification for high-wax crude oil, CH3COONa being applied as additive, was studied with orthogonal design method. The results showed that dewatering efficiency greatly improved in the presence of much less CH3COONa. By using SH9402 microwave system, the dewatering rate of Daqing high-wax emulsion containing 50% mass fractions of water was up to 95.83% under the conditions of microwave power 225 W, system pressure 0.7 MPa, isobarically time 12 min and m(CH3COONa)/ m(Oil) =0.05.
作者 祁强 李萍 张起凯 赵杉林 李婷婷 QI Qiang, LI Ping, ZHANG Qi-kai, ZHAO Shan-lin, LI Ting-ting (Department of Petroleum & Chemical Technology, Liaoning University of Petroleum & Chemical Technology, Fushun 113001, China)
出处 《石油学报(石油加工)》 EI CAS CSCD 北大核心 2009年第3期 447-451,共5页 Acta Petrolei Sinica (Petroleum Processing Section)
基金 辽宁省教育厅项目(2004D06)资助
关键词 石蜡基原油 正交设计 微波辐射 破乳 paraffin base crude oil orthogonal design method microwave radiation demulsification
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