四丁基溴化铵水合物浆液浓度电导率法在线测定.pdf

化
工.
进展
2038
CIIEMIICAL AND ENGIINDERIING PROGRESS
2017年第36卷第6期
erose
研究开发
33000/0/MA
四丁基溴化铵水合物浆液浓度电导率法在线测定
方洁2,李小森,陈朝阳,张都,夏志明,颜克凤
中国科学院广州能源研究所,中国科学院天然气水合物重点实验室,中国科学院广州天然气水合物研究中心
广东广州510640:2中国科学技术大学纳米学院,江苏苏州215123)
摘要:四丁基澳化铵(IBAB)水合物浆液浓度快速测定对TBAB水合物形成分解动力学研究和水合物浆液生产
过程控制具有重要作用。通过在线电导率测定,本文研究了温度、TBAB液度、TBAB水合物固含量对TBAB
水合物浆液电导率的影响,立了电导辛法快速测定TBAB水合物浆液中落液浓度及TBAB水合物固含量的方
法,并提出了一种工业"1BAB水合物泶液制备过程中溶液浓度和水合物固含量在线取样定董測量方案。研究结
果表明:TBAB溶液电导?随溶液湿度升高线性増大,随BAB水合物固含量的増大而减小:IBAB解离度随
浓度增大而减小,低浓度时(摩尔分数<0.54%),溶液电导率随浓度増大鼗性増加,高浓度时,因TBAB解离
度显著减小,溶液电导率增长鍰慢,出现一个最高値;实验所得的TBAB水合物浆液固含量和TBAB溶液浓度
计算经验公式,与实际浓度之间最大相对误差约9.0%,结果较可靠
关键词:水合物;结晶;电导率;固含董;电解质;溶液浓度
中图分类号:TQ016;TQ075
文献标志码:A
文章编号:1000-6613(2017)06-2038-07
DOI:10.16085/issn.1000-6613.2017.06.010
Online measurement of tetra-butyl ammonium bromide concentration in
hydrate slurry by electric conductivity
F Jie, LI Xiaosen CIEN Zhaoyang, ZILANG Y, Xld Zhiming, YAN Kefeng
(Guangzhou Institute of Inergy Conversion, Chinese Academy of Sciences; Key Laboratory of Gas Ilydrate, Chinese
Acadcmy of Scienccs: Guang/hou Center Mor (as Hydratc Rcscarch, Chinesc Academy o[ Scicnccs, (uang/hou 51064
Guangdong, China; Nano Sciences and Technology Institute, University of Science and Technology of China, Suzhou
215123, Jiangsu, China)
Abstract: Thc quick mcasurcmcnt of tetra-buty/ ammonium bromic(TBAB hydrate crystal
concentration is important to the control of the hydrate slurry production and the kinetics studies of
TBAB hydrate formation and dissolution. In this paper, the effects of temperalure, TBAB concentration
and TBAB hydrate solid content on the electric conductivity of TBAB hydrate slurry was studied
through online clectric conductivity mcasurcmcnt. A mcthod was cstablished to quickly mcasurc thc
conccntration of TBAB solution and TBAB solid hydrate contcnt in hydrate slurry. An industrial
scheme was proposed for TBAB solution concentration and TBAB hydrate solid content quick
measurement online during TBAB hydrate slurry production. The electric conductivily of TBAB
solution increases linearly with the temperature rise and decreases with the solid hydrate content
augment. The dissociation degree of TBAB solution decreascd with thc risc of TBAB conccntration. At
收稿日期:2016-11-04:修改稿日期:2016-12-14
第一作者:方洁(1991-),男,硕士研究生,从事水合物法CO2分
基金项目:国家自然科学基金(51576202,51276182)及国家国际科
离技术研究。联系人:陈朝阳,研究员,博士生导师。E-mail:
技合作专项(2015DRA61790)项目
chenzyams picc ac cn
万方数括