Quadruple fluidized bed gasifier (QFBG) is a new kind of clean power-generation system, which consists of a dual fluidized bed (DFB) gasifier and a dual fluidized bed of chemical looping. With high gasification efficiency and low carbon emissions, QFBG has attracted extensive attention. Hydrodynamic characteristics of the quadruple fluidized bed (QFB) system are the base of modeling and designing of a hot reactor. To fully understand the hydrodynamic characteristics, a cold flow model of the QFB system on a laboratory scale was designed and set up. In the cold model, operation parameters such as bubble fluidized bed velocity, riser velocity, and total solid inventory (TSI) were investigated. Meanwhile, an exclusive pressure balance equation of QFB is proposed. The QFB was also compared with DFB. The results from the experiment show that the QFB system has a positive response to the operation parameters and better solid transport capacity than the typical DFB system.
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.