화학공학소재연구정보센터
Fuel Processing Technology, Vol.136, 50-55, 2015
Efficient conversion of carbon dioxide to non-methane light hydrocarbons - Two stage process with intercooler
Liquefied petroleum gas (LPG) synthesis from CO2 hydrogenation was carried out in a new technical route consisting of two packed tubular reactors in series with an inter-stage water removal. In this way, CO2 was transformed to DME-rich products in the first stage over the Cu-Zn-Zr-Al/Pd-beta catalyst and then to hydrocarbons in the second stage over the Pd-beta catalyst. CO2 conversion and LPG selectivity were mainly dominated by the first and second stages, respectively. The obtained results disclosed that the reaction performance of the two-stage process with intercooler was significantly superior to the single-stage process and its analog without intercooler for either yield or selectivity of the target product. The tests were conducted at 260-300 degrees C, 2.0-3.3 MPa, with a H-2/CO2 mole ratio of 3-5. It is noted that the hybrid catalyst gave conversion as high as 85% with high hydrocarbon selectivity by using the designed reaction system. (C) 2014 Published by Elsevier B.V.