聚硅氧烷原油破乳剂FW-135 的合成与破乳性能

Synthesis and Demulsification Performance of Polyorganosiloxane Demulsifier FW-135

王洪国 高婧 廖克俭 马梦瑶 周华

WANG Hongguo GAO Jing LIAO Kejian MAMengyao Zhou Hua

针对辽河油田冷一联原油，在磺酸树脂催化下，基于含氢硅油为主链与丙烯酸（MAA）、甲基丙烯酸（MA）、甲基丙烯酸甲酯（MMA）和丙烯酸丁酯（BA）合成了非聚醚类聚硅氧烷原油破乳剂。通过单因素实验确定适宜合成条件为：反应温度80℃、反应时间5 h、催化剂用量为混合酸（丙烯酸和甲基丙烯酸）总量的21%、引发剂BPO用量为反应单体质量的1.0%。通过红外光谱分析了合成的聚硅氧烷破乳剂FW-135 的结构，并考察其对辽河冷一联原油的破乳脱水性能。红外光谱分析表明，所合成的产物为目标产物。在破乳温度60℃、破乳时间120min、加剂量80 mg/L 的条件下，聚硅氧烷破乳剂对辽河冷一联原油的脱水率达90.65%，油水两相分离且界面清晰。图6 表1 参17

Aimed at Lengyilian crude oil in Liaohe oilfield, Polyorganosiloxane demulsifier FW-135 was prepared through the reaction of hydrogen-containing silicone oil with acrylic acid（MA）, methacrylic acid（MAA）, methy methacrylate（MMA）and n-butyl acrylate（BA）, using sulfoacid resin as the catalyst. On basis of the single factor test, the effect of the reaction temperature, reaction time, catalyst usage and BPO usage on the reaction conversion were examined. The optimal reaction conditions were determined as follows: the reaction temperature was 80℃, reaction time was 5 h, catalyst dosage was 21% of the mixed acid, and the 1.0% benzoyl peroxide （BPO） dosage was 1% of the reactant. The structure of the polysiloxane demulsifier FW-135 was characterized by FT-IR and the dehydration effect on crude oil was studied. The FT-IR analysis showed that the objective polymer was obtained through the reaction. The dehydration rate of the crude oil treated by polyorganosiloxane demulsifier FW-135 was up to 90.65% after treated at the temperature of 60℃and at the FW-135 dosage of 80 mg/L for 120 min, and two-phase separation was visible with clear interface.