天然气水合物抑制剂DVP的合成及性能研究

摘要

合成了新型动力学天然气水合物抑制剂DVP,以四氢呋喃法(THF)对其性能进行了评价.DVP的最佳合成条件为:n(N-乙烯己内酰胺):n(丙烯醇):n(甲基丙烯酸羟乙酯)=5:1:1,引发剂加量为0.5%(占单体质量百分数),反应温度60℃,反应时间8 h.DVP的加量0.5%,抑制效果最好,水合物结冰温度为-8℃.结合天然气水合物抑制剂PVP做性能对比,DVP具有加量少、抑制效果好的优点.将DVP与热力学水合物抑制剂进行复配,DVP的抑制性能得到进一步提高.%A new kinetic of natural gas hydrate inhibitor DVP is independent synthetic equipment using self-designed evaluation,by the method of four hydrogen barking dogs (THF)on its performance is evalu-ated.The DVP optimal synthetic conditions were determined as follows:n (N-vinyl caprolactam):n(pro-pylene glycol):n (hydroxyl ethyl methacrylate)=5:1:1,amount of initiator added was 0.5%(mass per-cent)of monomer,reaction temperature 60 ℃,the reaction time of 8 h.The DVP added value of 0.5%, hydrate freezed temperature is 8 ℃.Performance compared with gas hydrate inhibitor PVP,DVP added quantity is little,inhibit the advantages with good effect.Finally,the DVP distribution with thermodynamic hydrate inhibitors,DVP suppression performance is further improved.