Optimizing Preparation of Modified Calcium Oxide to Capture CO2 by Carbonation
By
Azrul Bin Alias
Progress report submitted in partial fulfillment of the requirements for the
Bachelor of Engineering (Hons)
(Chemical Engineering)
JULY 2009
Universiti Teknologi PETRONAS
Bandar Seri Iskandar
31750 Tronoh
Perak Darul Ridzuan
ABSTRACT
The objective of this project is to optimize the preparation of modified Calcium Oxide (CaO) to capture CO2 by carbonation through hydration of ethanol/water. The carbonation reaction is the basis for CO2 capture systems. However CaO as regenerable CO2 sorbents in industrial processes is limited by the rapid decay of the carbonation conversion with the number of cycle carbonation/ calcination. Therefore Calcium based sorbents have attracted renewed attention as possible sorbents for cyclic calcination/carbonation processes due to their potential for regeneration and effective technique for capturing CO2 from combustion processes. The carbonation conversion for CaO modified with ethanol/water solution is greater than for CaO hydrated with distilled water and is much higher than that for calcined limestone. (Li et all). This work covers and presents a multi experimental test of preparing the modified CaO through hydration of water/ethanol by manipulate various parameter combination. The experiments were conducted using a modified furnace to permit the flow of CO2 for carbonation process and calcium oxide. Then, the carbonation conversion is calculated which signify the effectiveness of CO2 capture and the optimum parameter to produce the highest carbonation conversion is identified based on approach of Taguchi Method , the signal-to-noise (S/N) ratio and the analysis of variance (ANOVA). Through this study the optimal parameter to prepare modified CaO through ethanol/water hydration can be obtained.
TABLE OF CONTENT
ABSTRACT
CHAPTER 1 INTRODUCTION 1.1 Background of Study 1.2 Problem Statement 1.3 Objectives & Scope of Study
CHAPTER 2
Azrul Bin Alias
Progress report submitted in partial fulfillment of the requirements for the
Bachelor of Engineering (Hons)
(Chemical Engineering)
JULY 2009
Universiti Teknologi PETRONAS
Bandar Seri Iskandar
31750 Tronoh
Perak Darul Ridzuan
ABSTRACT
The objective of this project is to optimize the preparation of modified Calcium Oxide (CaO) to capture CO2 by carbonation through hydration of ethanol/water. The carbonation reaction is the basis for CO2 capture systems. However CaO as regenerable CO2 sorbents in industrial processes is limited by the rapid decay of the carbonation conversion with the number of cycle carbonation/ calcination. Therefore Calcium based sorbents have attracted renewed attention as possible sorbents for cyclic calcination/carbonation processes due to their potential for regeneration and effective technique for capturing CO2 from combustion processes. The carbonation conversion for CaO modified with ethanol/water solution is greater than for CaO hydrated with distilled water and is much higher than that for calcined limestone. (Li et all). This work covers and presents a multi experimental test of preparing the modified CaO through hydration of water/ethanol by manipulate various parameter combination. The experiments were conducted using a modified furnace to permit the flow of CO2 for carbonation process and calcium oxide. Then, the carbonation conversion is calculated which signify the effectiveness of CO2 capture and the optimum parameter to produce the highest carbonation conversion is identified based on approach of Taguchi Method , the signal-to-noise (S/N) ratio and the analysis of variance (ANOVA). Through this study the optimal parameter to prepare modified CaO through ethanol/water hydration can be obtained.
TABLE OF CONTENT
ABSTRACT
CHAPTER 1 INTRODUCTION 1.1 Background of Study 1.2 Problem Statement 1.3 Objectives & Scope of Study
CHAPTER 2
References: [1] N.H. Florin and A.T.Harris, “Enhanced H2 production from biomass coupled with CO2 capture using CaO”, University of Sydney, 2006 [2] N.H [3] J.S. Hoffman and H.W.Pennline, “Study of Regenerable Sorbent for CO2 Capture”, U.S Department of Energy, 2000 [4] V [5] S.Sivalingam, “Cyclic Carbonation Calcination Studies of Limestone and Dolomite for CO2 Separation From Combustion Flue Gases”, International Gas Turbine Institute of ASME, 2008 [6] A [7] J.C Abandes, “The maximum capture efficiency of CO2 using a carbonation/calcinations cycle of CaO/CaCO3”, Department of Energy and Environment (CSIC), 2002 [8] G.J Tzou, D.Y [10] Luis M. RomeoYolanda Lara, Pilar Lisbona and Jesús M. Escosa, “Optimizing make-up flow in a CO2 capture system using CaO ”, Universidad de Zaragoza, 2008 [11] M [12] B.M. Gopalasamy, B. Mondal and S. Ghosh “Taguchi method and ANOVA: An approach for process parameters optimization of hard machining while machining hardened steel”, National Institutes of Tech., Durgapur, 2009[pic] -----------------------