In this article, flow pattern of liquid film and flooding phenomena of a falling film microreactor (FFMR) were investigated using high-speed CCD camera. Three flow regimes were identified as ''corner rivulet flow,'' ''falling film flow with dry patches,'' and ''complete falling film flow'' when liquid flow rate increased gradually. Besides liquid film flow in microchannels, a flooding presented as the flow of liquid along the side wall of gas chamber in FFMR was found at high liquid flow rate. Moreover, the flooding could be initiated at lower flow rate with the reduction of the depth of the gas chamber. CO 2 absorption was then investigated under the complete falling flow regime in FFMR, where the effects of liquid viscosity and surface tension on mass transfer were demonstrated. The experimental results indicate that k L is in the range of 5.83 to 13.4 Â 10 À5 m s À1 and an empirical correlation was proposed to predict k L in FFMR.

JP-10 is a potential endothermic hydrocarbon fuel (EHF) with a high energy density for the regenerative cooling technology of advanced aircrafts. In this work, pyrolysis and coking of JP-10 were experimentally studied using an electrically heated tube as a flowing reactor under supercritical conditions (4.5 MPa, 550–735 °C). For the supercritical pyrolysis, dicyclopentadiene, exo-TCD4e, and indane/indene were observed with relatively higher selectivity at low conversion, and the selectivities of typical products (ethene, propene, CPD, cyclopentene, and benzene) were lower compared with that under atmospheric pressure, possibly because of the enhanced bimolecular reactions. The heat sink of JP-10 was approximately 2.5 MJ/kg ascribed to the severe coke formation during the pyrolysis. Further characterizations on cokes indicated that the coke in the bulk fluid was about 70–170 times higher than that deposited on the wall, attributed to rapid formation of polycyclic aromatic hydrocarbons (PAHs) of pyrolysis products rather than the wall catalysis.

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