Optimum conditions for the capture of carbon dioxide with a bubble-column scrubber》.pdfVIP

International Journal of Greenhouse Gas Control 35 (2015) 47–55 Contents lists available at ScienceDirect International Journal of Greenhouse Gas Control j o u r na l h o me p ag e: w w w. elsev /locate/ijggc Optimum conditions for the capture of carbon dioxide with a bubble-column scrubber Pao-Chi Chen a,∗ , Chen-Huai Huang a , Ting Su b , Hsiao-Wei Chen c,∗∗ , Ming-Wei Yang c , Jhy-Ming Tsao c a Department of Chemical and Materials Engineering, LungHwa University of Science and Technology, Taiwan b Department of Chemical Engineering, YuLin University, China c Research Institute of Taiwan Power Company, Taiwan a r t i c l e i n f o a b s t r a c t Article history: A continuous bubble-column scrubber, capturing CO2 gas for scrubber design purpose by using a NaOH Received 27 June 2014 solution under a pH-stat operation, is used to search for optimum parameters for a scrubber design Received in revised form by means of the Taguchi method. The parameters are the pH of the solution, gas-flow rate, liquid-flow 29 September 2014 rate and temperature, with four levels for each. A total of 16 runs are carried out by using a Taguchi Accepted 23 January 2015 experimental design. From the measured CO2 concentrations at the outlet, the absorption rate and overall Available online 19 February 2015 mass-transfer coefficient can be determined with the support of a steady-state material balance, as well as