Abstract
Moved bed gravity flow of solid is required for coal gasifier, metal ore direct reduction furnace, gas phase coal liquifier, etc. as energy conservation. Such a process is high pressure and or high temperature process and required for multi loop injection feeder.
The authors developed a new noise flow meter for the process based on the authors' test and the prediction.
The measuring method is an noninstrusive method using the simple lean noise sensors and sensing technique without sensing hole on the gravity flow pipe.
The conclusion of the authors' test is that noise pressure level on 8kHz by C characteristics is suitable for the mass flow control without back ground noise calibration.
Space filtering of the signal or cross correlation method of signal is more suitable for sensing technique.
The sensor and senting technique is suitable for solid particle velocity meter of two phase transport pipe.
