Heat-Stable Salts and Methods for Their Removal from Alkanolamine Carbon Dioxide Absorbents (Review)

被引：23
作者：
Bazhenov, S. D. [1 ]
Novitskii, E. G. [1 ]
Vasilevskii, V. P. [1 ]
Grushevenko, E. A. [1 ]
Bienko, A. A. [2 ]
Volkov, A. V. [1 ]
机构：
[1] Topchiev Inst Petrochem Synth, Moscow 119991, Russia
[2] PAO VNIPIgasdobycha, Moscow 119415, Russia
来源：
RUSSIAN JOURNAL OF APPLIED CHEMISTRY | 2019年 / 92卷 / 08期
关键词：
alkanolamine; heat-stable salts; absorption; distillation; ion exchange; electrodialysis; carbon dioxide; POSTCOMBUSTION CO2 CAPTURE; THERMAL-DEGRADATION; AMINE SOLVENTS; PILOT-PLANT; TECHNOLOGY DEVELOPMENT; AQUEOUS-SOLUTIONS; MASS-TRANSFER; MONOETHANOLAMINE; ABSORPTION; GAS;
D O I：
10.1134/S1070427219080019
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Absorption using aqueous solutions of alkanolamines is the most widely used procedure for removal of carbon dioxide from natural gas, flue gases from power-generating facilities, and other mixtures. Its main drawback is degradation/deactivation of alkanolamine under the process conditions (high temperatures, presence of oxygen and other impurities) with the formation of heat-stable salts consisting of alkanolammonium cation and anions of organic and inorganic acids. The main operation problems caused by heat-stable salts are considered in the review. Three main methods for removal of heat-stable salts from alkanolamine adsorbents are described in detail: distillation, ion exchange, and electrodialysis. The main characteristics of these methods and their advantages and drawbacks are described, and a comparative analysis is made. The history and state-of-the art of studies within the framework of each method are presented.
引用
收藏
页码：1045 / 1063
页数：19
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