1. College of Safety Engineering,Heilongjiang University of Science and Technology,Harbin　 150022,China;2. National Central Laboratory of Hydrocarbon Gas Transportation Pipeline Safety,Harbin　 150022,China;3. School of Architecture and Civil Engineering,Heilongjiang University of Science and Technology, Harbin　 150022,China;4. Shouyang Jinglu Coal Mine Company Limited,Shanxi Boda Group,Jinzhong　 045400,China

为探究油水乳液体系瓦斯水合物分离特征,利用高压可视搅拌水合分离实验装置结合气相色谱仪,研究了2℃条件下油水体积比、驱动力对瓦斯水合物生长速率和CH4回收率的影响,计算了气体消耗量、水合物体积生成量、水的转化率。结果表明:油水乳液体系水合物浆液具有良好的流动性;相同温度压力条件下,油水体积比1∶1体系瓦斯水合物平均生长速率和CH4回收率均优于7∶3体系,但水合物浆液流动性不及7∶3体系;瓦斯水合物平均生长速率、气体消耗量、水合物体积生成量、水的转化率均随着驱动力的增大而增大;油水体积比1∶1条件下CH4回收率和分离因子随着驱动力的增大而先增大后减小,驱动力为3.0 MPa(压力为7.78 MPa)时CH4回收率最大为24.36%。

In order to investigate the separation characteristics of gas hydrate in oil-water emulsion system,this paper studied the influence of oil-water volume ratios and driving forces on the growth rate and CH4 recovery of gas hydrate under the condition of 2 ℃ by the high pressure stir visual hydrate separation experiment combined with the gas chro- matograph,and calculated the gas consumption,hydrate generation volume,the conversion rate of water. The results show that the hydrate slurry has a good liquidity in oil-water emulsion system. The average growth rate of gas hydrate and the CH4 recovery in the oil-water volume ratio 1 ∶ 1 system are better than the 7 ∶ 3 system under the conditions of same temperature and pressure,but the hydrate slurry liquidity is much better with the 7 ∶ 3 system. The average growth rate,gas consumption,hydrate generation volume and the conversion rate of water increase with driving force. In the system of oil-water volume ratio 1 ∶ 1,the CH4 recovery and separation factor increase at the beginning and then decrease with the increase of driving force,the biggest CH4 recovery is 24. 36% when the driving force is at 3. 0 MPa (the pressure is 7. 78 MPa).

国家自然科学基金重点资助项目(51334005)；国家自然科学基金面上资助项目(51274267)；黑龙江省普通高等学校青年学术骨干支持计划资助项目；

Wu Qiang,Wang Shihai,Zhang Baoyong,et al. Characteristics of enhanced separation of mine gas with oil-water emulsion[ J]. Journal of China Coal Society,2016,41(9):2223-2229.