多步分解法研究NaBr、KBr溶液中甲烷水合物的稳定条件

马燕; 刘昌岭; 业渝光; 姚德; 孙始财; 相凤奎

多步分解法研究NaBr、KBr溶液中甲烷水合物的稳定条件

马燕^1,2,
刘昌岭²,
业渝光²,
姚德¹,
孙始财^2,3,
相凤奎^2,3

1 山东理工大学化工学院, 山东淄博 255049;
2 青岛海洋地质研究所, 青岛 266071;
3 山东科技大学土木建筑学院, 青岛 266510

基金项目:

国土资源部公益性行业科研专项(201111026)

国家重点基础研究发展计划(2009CB219503)

详细信息

作者简介:
马燕(1985-),女,在读硕士,主要从事水合物实验研究工作.E-mail:matafeiyan521134@163.com

中图分类号: TE135⁺.4
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出版历程
- 收稿日期: 2011-04-09

A MULTI-STEP DISSOCIATION METHOD FOR CH₄ STABILITY STUDY IN NABR, KBR SOLUTIONS

1 College of Chemical Engineering, Shandong University of Technology, Zibo 255049, Shandong, China;
2 Qingdao Institute of Marine Geology, Qingdao 266071, China;
3 College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266510, China

摘要

摘要: 设计加工了一套研究水合物稳定条件的实验装置,采用多步加热分解法对不同浓度的盐溶液中的甲烷水合物稳定条件进行了初步研究。实验测定了4种不同浓度的NaBr和KBr溶液中甲烷水合物的P-T稳定条件,结果表明,相同浓度下Na⁺对稳定性的影响大于K⁺;当NaBr和KBr浓度均为0.2 mol/L时,其稳定点相对与纯水分别降低了(0.5±0.1)K和(0.2±0.1)K;当NaBr和KBr浓度均为0.3 mol/L时,其稳定点相对与纯水分别降低了(1.0±0.1)K和(0.5±0.1)K。
- 多步分解法 /
- 甲烷水合物 /
- NaBr /
- KBr /
- 稳定条件
Abstract: An experimental setup has been built to study the stability conditions of gas hydrate. The stability conditions of methane hydrate in solutions with different salt concentration are preliminarily investigated using multi-step dissociation method. In this paper, P-T conditions of methane hydrate have been measured in four kinds of solutions containing various concentrations of NaBr and/or KBr. The results show that the influence of Na⁺ ion under certain P-T conditions is stronger than K⁺ ion under same concentration. In the NaBr and KBr solutions with concentrations of 0.2mol/L and 0.3mol/L, the equilibrium points of methane hydrate were (0.5±0.1) K and (0.2±0.1) K, and (1.0±0.1) K and (0.5±0.1) K respectively, lower than those in a pure water system.
- multi-step dissociation method /
- methane hydrate /
- NaBr /
- KBr /
- stable conditions