title: Removal of CO2 in a multistage fluidized bed reactor by diethanol amine impregnated activated carbon.
abstract: To mitigate the emission of carbon dioxide (CO2), we have developed and designed a four-stage fluidized bed reactor. There is a counter current exchange between solid adsorbent and gas flow. In this present investigation diethanol amine (DEA) impregnated activated carbon made from green coconut shell was used as adsorbent. This type of adsorbent not only adsorbs CO2 due to the presence of pore but also chemically reacts with CO2 and form secondary zwitterions. Sampling and analysis of CO2 was performed using Orsat apparatus. The effect of initial CO2 concentration, gas velocity, solid rate, weir height etc. on removal efficiency of CO2 have been investigated and presented. The percentage removal of CO2 has been found close to 80% under low gas flow rate (0.188 m/s), high solid flow rate (4.12 kg/h) and weir height of 50 mm. From this result it has been found out that multistage fluidized bed reactor may be a suitable equipment for removal of CO2 from flue gas.
authors.affiliation: a Department of Chemical Engineering , Indian Institute of Technology (IIT) Kharagpur , West Bengal , India.
authors.forename: Dipa
authors.initials: D
authors.lastname: Das
authors.affiliation: a Department of Chemical Engineering , Indian Institute of Technology (IIT) Kharagpur , West Bengal , India.
authors.forename: Debi Prasad
authors.initials: DP
authors.lastname: Samal
authors.affiliation: a Department of Chemical Engineering , Indian Institute of Technology (IIT) Kharagpur , West Bengal , India.|b Department of Chemical Engineering , School of Engineering, Howard College, University of Kwazulu-Natal , Durban , South Africa.
authors.forename: Bhim C
authors.initials: BC
authors.lastname: Meikap
mesh_terms: D019149:Bioreactors; D002245:Carbon Dioxide / Q000302:isolation & purification*; D002606:Charcoal / Q000737:chemistry*; D004983:Ethanolamines / Q000737:chemistry*
chemical_list: D004983:Ethanolamines; D002245:Carbon Dioxide; D002606:Charcoal; C020283:diethanolamine
keywords: Activated carbon; adsorbent; adsorption; carbon dioxide capture; fluidized bed; multistage