摘要
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 chromatograph,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）.
作者
吴强
王世海
张保勇
高霞
赵子琪
张赛
于洪立
WU Qiang WANG Shi-hai ZHANG Bao-yong GAO Xia ZHAO Zi-qi ZHANG Sai YU Hong-li(College of Safety Engineering, Heilongfiang University of Science and Technology, Harbin 150022, China National Central Laboratory of Hydrocarbon Gas Transportation Pipeline Safety, Harbin 150022, China School of Architecture and Civil Engineering, Heilongfiang University of Science and Technology, Harbin 150022 ,China Shouyang Jinglu Coal Mine Company Limited ,Shanxi Boda Group ,Jinzhong 045400,China)
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2016年第9期2223-2229,共7页
Journal of China Coal Society
基金
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
