Jae, Jungho Coolman, Robert Mountziaris, T. J. Huber, George W. 2024-01-20T10:01:33Z 2024-01-20T10:01:33Z 2021-08-31 2014-04-28 0009-2509 https://pubs.kist.re.kr/handle/201004/126867 Catalytic fast pyrolysis (CEP) of wood was studied using a spray-dried ZSM-5 catalyst in a process development unit (PDU) consisting of a bubbling fluidized bed reactor with on-stream particle input and output. The PDU was capable of maintaining constant product yield of aromatics over an extended reaction period (6 h) with continuous catalyst addition and removal. The yields and selectivity for aromatics and olefins were dependent on temperature, biomass weight hourly space velocity (WHSV), catalyst to biomass ratio, fluidization gas velocity, and catalyst bed weight. The overall aromatic yield increased up to 15.5 carbon% with decreasing gas velocities due to the increased vapor residence time and the improved mass transfer from smaller bubble sizes. A simulated recycle stream of CEP product gases consisting of CO, CO2 and olefins was used to test the viability of subsequent olefin aromatization in the presence of CO and CO2. Olefins were converted into additional aromatics while CO and CO2 remained inert during CEP. The spray-dried ZSM-5 catalyst was stable in a series of 30 reaction/regeneration cycles. (C) 2013 Elsevier Ltd. All rights reserved English PERGAMON-ELSEVIER SCIENCE LTD FLUIDIZED-BED REACTOR AROMATICS ZEOLITE OLEFINS HZSM-5 COMPONENTS CONVERSION CHEMICALS CHEMISTRY LIGNIN Catalytic fast pyrolysis of lignocellulosic biomass in a process development unit with continual catalyst addition and removal Article 10.1016/j.ces.2013.12.023 1 CHEMICAL ENGINEERING SCIENCE, v.108, pp.33 - 46 CHEMICAL ENGINEERING SCIENCE 108 33 46 scie scopus 000332392100004 2-s2.0-84892887166 Engineering, Chemical Engineering Article FLUIDIZED-BED REACTOR AROMATICS ZEOLITE OLEFINS HZSM-5 COMPONENTS CONVERSION CHEMICALS CHEMISTRY LIGNIN Catalytic fast pyrolysis Scale up Biomass Aromatics Bubbling fluidized bed reactor Continuous operation