Crude oil low-temperature demulsifier and preparation method thereof[v]

• Main Authors: OUYANG DONGXU, ZUO XIAOMING, ZHANG PENGHU, WANG PEIPEI, SHAO YANBO, QIU QI, DI GUOBIN, XIANG DUOHUA, ZHANG CHAOYANG, ZHU QIAN, YU MIN, MA QINGLONG, XU CHUANXIN, XING XIAODONG, JU SHIYI, GUO HUIJUN, LI SHAOPING, WANG YANG, YANG WEI, WANG XIAOYONG, LIN JUNLING
• Format: Patent
• Language: Chinese; English
• Published: 05.06.2020
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MINERAL WAXES; ORGANIC MACROMOLECULAR COMPOUNDS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention provides a crude oil low-temperature demulsifier and a preparation method thereof. The preparation method comprises the following steps: mixing raw materials of isopropanol, polyethylenepolyamine, ethylene oxide and propylene oxide, and reacting under the action of a catalyst to obtain polyether; and mixing the obtained polyether, polyalkyl siloxane and an initiator, and reacting toobtain the crude oil low-temperature demulsifier. The demulsifier with multiple branched chains, a star-shaped structure and high relative molecular mass is prepared through the mutual cooperation reaction of the raw materials, has a good chemical dehydration effect on crude oil, and can maintain good performance at the low temperature 10 DEG C higher than the freezing point of the crude oil. 本发明提供了一种原油低温破乳剂及其制备方法。所述制备方法包括如下步骤：将原料异丙醇、多乙烯多胺、环氧乙烷和环氧丙烷混合，在催化剂的作用下进行反应，得到聚醚；然后将得到的聚醚、聚烷基硅氧烷和引发剂混合，进行反应，得到所述原油低温破乳剂。本发明通过各原料的相互配合反应，制得了一种具有多支链、星型结构、高相对分子质量的破乳剂，该破乳剂对于原油具有良好的化学脱水效果，且在高于原油凝固点10℃的低温下也能保持良好的性能。