Nowadays, coal fired plant has an important role in generating energy all over the world. It affects to greenhouse gases effect (GHGs) and global warming. Carbon dioxide (CO2) is a product of coal combustion that is the amount of number one in the world. However, most of the CO2 usually remove from post-combustion process by chemical absorption which is Monoethanolamine (MEA). Anyway, MEA has a disadvantage such as low CO2 loading and corrosion. Therefore, this study needs to investigate the effect of the mass transfer for a new solvents, 2-(Methylamino)ethanol (2-MAE) and Dimethylaminoethanol (DMAE), compensate for the drawbacks of MEA to increase in mass transfer rate and performance of CO2 absorption. Effect of amine concentration by varying weight ratio from 30:0 to 0:30 wt%, liquid flow rate 5.3,10.6 and 15.9 m3/m2•h, CO2 content in gas phase 5,10 and 15 %v/v, CO2 initial loading 0.0, 0.1 and 0.2 mol/mol were investigated. From the results, increasing the ratio of 2-MAE in mixed solution increases the highest mass transfer rate and CO2 absorption performance. On the other hand, increasing the ratio of DMAE decreases the mass transfer rate. The most influencing factor for mass transfer is the flow rate of solution that improves the forward rate of reaction and reduced time for dissolved CO2. However, two-component of amine solution can improve the drawback of a single-component very well. It can be seen that a new solvent will be useful in the future.
Carbon dioxide (CO2) is one of the main factors for climate change issues. Absorption is the technology to remove CO2 from various industries. The equipment used is the packed column to promote high mass transfer rate and to study the overall mass transfer coefficient (KGav). The KGav is an important parameter for designing and scaling up of packed column. Therefore, the objective of this work is to measure KGav for CO2 absorption into the aqueous solution of monoethanolamine (MEA) in a random-packed column and to investigate effect of parameters on KGav. The parameters are the solvent flow rate from 5.3-15.9 m3/m2h, CO2 initial loading from 0.0-0.2 mole/mole and CO2 content in gas phase from 5-15 %v/v. The results show that KGav increases as the solvent flow rate and solvent concentration increase. The CO2 content in gas phase provides relatively high impact on KGav with an increase in the CO2 content.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.