Instruction Manual for ANL Passive Acoustic Flow Measurement System

摘要

The ANL Passive Acoustic Flow Measurement System is a signal processor designed to measure the flow rate of particles suspended in a gas. The intended application is the measurement of char flow at the BI-GAS Pilot Plant, Homer City, PA. An undetected flow stoppage can very quickly cause a dangerous temperature excursion in the gasifier. At the request of BI-GAS, Argonne National Laboratory (ANL) has developed and installed acoustic monitors which give rapid indications of blockages or other flow perturbations in the char lines. These monitors use a high temperature microphone for measuring the acoustic attenuation caused by the presence of char in the lines. This manual describes the components and gives instructions for installation and operation of the system. Figure 1 shows the components of the flow measurement system. Detailed discussion of the principle of operation and design of the flow monitor may be found in Technical Memorandum An Acoustic Char Flow Monitor for the BI-GAS Pilot Plant, ANL-FE-49622-TM08, July 1979. (ERA citation 05:014633)