SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2019, Vol. 27 ›› Issue (2): 405-410.DOI: 10.1016/j.cjche.2018.03.033

• Chemical Engineering Thermodynamics • Previous Articles     Next Articles

Influence factors of methane hydrate formation from ice: Temperature, pressure and SDS surfactant

Weiguo Liu, Yanghui Li, Xiaohu Xu   

  1. Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
  • Received:2018-02-06 Revised:2018-03-20 Online:2019-03-18 Published:2019-02-28
  • Contact: Yanghui Li
  • Supported by:

    Supported by the National Natural Science Foundation of China (51436003, 51676024 and 51509032), the National Key Research and Development Program of China (2017YFC0307305, 2016YFC0304001, 2017YFC0307705)

Influence factors of methane hydrate formation from ice: Temperature, pressure and SDS surfactant

Weiguo Liu, Yanghui Li, Xiaohu Xu   

  1. Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
  • 通讯作者: Yanghui Li
  • 基金资助:

    Supported by the National Natural Science Foundation of China (51436003, 51676024 and 51509032), the National Key Research and Development Program of China (2017YFC0307305, 2016YFC0304001, 2017YFC0307705)

Abstract: A series of experiments of forming hydrate from ice powders in different conditions have been carried out with constant volume method to evaluate the influence factors such as pressure, temperature, and SDS surfactant. The change of temperature and pressure were collected as a function of elapsed time, which were used to calculate the gas consumption and hydrate saturation during hydrate formation (pVT method). Based on the experimental results and the analysis, it is concluded that:(1) Both initial pressure and temperature have effect on the hydrate formation and temperature plays a more important role in the process; (2) heating and secondary pressurization will promote the gas hydrate formation and enhance the hydrate saturation as a result. Meanwhile, the promotion of heating seems to be more obvious than that of secondary pressurization; (3) different concentrations of SDS surfactant have clearly influence on the saturation of gas hydrate and there is an optimal concentration to promote the hydrate formation.

Key words: Methane hydrate, Ice, Heating, Secondary pressurization, Surfactant

摘要: A series of experiments of forming hydrate from ice powders in different conditions have been carried out with constant volume method to evaluate the influence factors such as pressure, temperature, and SDS surfactant. The change of temperature and pressure were collected as a function of elapsed time, which were used to calculate the gas consumption and hydrate saturation during hydrate formation (pVT method). Based on the experimental results and the analysis, it is concluded that:(1) Both initial pressure and temperature have effect on the hydrate formation and temperature plays a more important role in the process; (2) heating and secondary pressurization will promote the gas hydrate formation and enhance the hydrate saturation as a result. Meanwhile, the promotion of heating seems to be more obvious than that of secondary pressurization; (3) different concentrations of SDS surfactant have clearly influence on the saturation of gas hydrate and there is an optimal concentration to promote the hydrate formation.

关键词: Methane hydrate, Ice, Heating, Secondary pressurization, Surfactant