Quench & Recycle Reactor (QNC/RCL): Inter-stage injection (QNC) of a feed gas (oxygen or air for example) may lead to better temperature control and/or improved product selectivity of POX (partial oxidation) reactors. This technique can also be integrated into Combustor designs for NOX control. Recycle of product gases for conversion of un-reacted feed gas(s) or for improved product selectivity, with or without recovery of products, is a common practice. Therefore our design and modeling tools for the quench (QNC) and recycle (RCL) reactors come handy to explore these benefits.
Reactors-in-Series (RIS)/ hybrid: Sometime a packed catalytic bed (FXB) can be used as a polishing reactor to achieve near-complete conversion when used in series with a bubbling fluidized bed (BFB) reactor. Similar goal or improved product selectivity may be achieved by using multiple reactors, fixed or fluidized bed in series, operating in different modes. An FCC and a CFB reactor can also be simulated as a series of reactors operating in different hydrodynamic modes. Reactor-in series (RIS) design and modeling tool available with us is applicable to these systems.