The axial and radial distributions of pressure pulsation intensity in a catalyst-feed counter-current contacting injection zone were studied in a large-scale cold model experiment. Combined the distributions of pressure pulsation intensity with the concentration distributions of the feed jets, the pre-lift gas and the particles, the gas?solid interaction characteristics as well as the influence of the pressure pulsation on the flow patterns were analyzed. The results showed that based on the contributions of the feed jets, the pre-lift gas and the particles, the whole feed injection zone can be divided into three parts, the jet gas upstream influence zone (H=?0.375~?0.1 m), the jet gas controlling zone (H=?0.1~0.375 m) and the jet gas downstream influence zone (H=0.375~0.675 m). The simulation results of radial distribution of relative standard deviation of pressure pulsation in the injection zone agree well with the experimental data.
Fengjing ZHAO Jing BIAN Yiping FAN
. Influencing Factors on Distribution of Pressure Pulsation Intensity in Injection Zone of a Novel FCC Riser[J]. The Chinese Journal of Process Engineering, 2018
, 18(1)
: 69
-74
.
DOI: 10.12034/j.issn.1009-606X.217236
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