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首页> 外文会议>7th International Conference on Circulating Fluidized Beds; May 5-8, 2002; Niagara Falls, Ontario, Canada >A NOVEL NON-INTRUSIVE PROBE OF PARTICLE MOTION AND GAS GENERATION IN THE FEED INJECTION ZONE OF THE FEED RISER OF A FLUIDIZED BED CATALYTIC CRACKING UNIT
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A NOVEL NON-INTRUSIVE PROBE OF PARTICLE MOTION AND GAS GENERATION IN THE FEED INJECTION ZONE OF THE FEED RISER OF A FLUIDIZED BED CATALYTIC CRACKING UNIT

机译：流化床催化裂化装置进料口进料区的颗粒运动和气体生成的新型非侵入式探究

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摘要

We define a non-intrusive Acoustic Shot Noise, ASN, probe of particle velocity at the wall of fluidized beds and transfer lines, and demonstrate how it can be used to obtain quantitative data on changes in particle velocity at the wall through accelerometer measurement of changes in the wall vibrational energy. We show that the ASN probe can be calibrated if any two, of the following three quantities, are known for a transfer line: (1) average Axial Velocity of particles; (2) average Axial Mass Density of particles; (3) average Mass Flux of particles. The first field data are presented on simultaneous measurements of ASN excited wall vibrational energy along the feed riser of Fluidized Catalytic Cracking Units where catalyst particle flow is produced by the gas generated in the catalytic and thermal cracking of injected oil. The Feed Riser Profile, defined as the curve of RMS acceleration along the feed riser, exhibits changes in magnitude and shape that correlate with changes in product yield of the cracking process.
机译：我们定义了一种非侵入式声散粒噪声，ASN，流化床和传输线壁处的粒子速度探针，并演示了如何通过加速度计测量变化如何将其用于获取壁处粒子速度变化的定量数据在墙上的振动能量。我们表明，如果对于传输线已知以下三个量中的任何两个，则可以校准ASN探头：（1）颗粒的平均轴向速度； （2）颗粒的平均轴向质量密度； （3）粒子的平均质量通量。首次数据是在流化催化裂化装置进料冒口的ASN激发壁振动能的同时测量中得出的，在流化催化裂化装置中，注入油的催化裂化和热裂化产生的气体产生了催化剂颗粒流。进料冒口轮廓（定义为沿进料冒口的RMS加速度曲线）显示出大小和形状的变化，与裂解过程的产品收率变化相关。

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