Study on Corrosion in CO 2 Chemical Absorption Process Using

AbstractThis work explores the promise of aqueous solutions of blended m ethyldiethanolamine (MDEA) and piperazine (PZ) as a cost-effective absorbent for carbon dioxide (CO 2 ) capture from power plant flue gas streams. T he hanging film experiment is used to study the law of the corrosion of blended MDEA/PZ containing different CO 2 loading with carbon steel and stainless steel. Electrochemical corrosion experiments were carr ied out using the potentiodynamic polarization technique for carbon steel corrosion measurements. Many factors are taken into account, including temperature, CO 2 loading, mixing ratio of blended MDEA/PZ. The results show that the corrosion rate of carbon steel increases with solution temperature, concentration of PZ, CO 2 loading of solution. © 2010 Elsevier Ltd. All rights r eserved Keywords: Carbon Capture and Storage; absorbent; corrosion; MDEA/PZ 1. IntroductionThe world is generally in the development of CCS technology to reduce CO 2 emissions in response to global climate change. As an effective post -combustion capture technology, chemical absorption method is regarded as the most promising one of the capture technologies