摘要
Electrical capacitance tomography (ECT) was applied to dense-phase pneumatic conveying of pulverized coal, including the visualization of gas-solid flows in a horizontal pipeline.The pressure of experimental setup was up to 4.0 MPa, the solid-gas ratio was up to 11.73 kg·kg-1, and the diameter of conveying pipeline was 10 mm.The pipeline thickness of 8-electrode ECT system was 5 mm.An improved AC-based capacitance measuring circuit was developed.Single channel capacitance measuring circuit was adopted to simplify the ECT hardware.Landweber algorithm was used to reconstruct image.The flow characteristics of dense-phase pneumatic conveying was investigated with the method of ECT experiment.Finally, the serial ECT image was compared with the result of Fluent simulation to validate the reliability.
Electrical capacitance tomography （ECT） was applied to dense-phase pneumatic conveying of pulverized coal, including the visualization of gas-solid flows in a horizontal pipeline. The pressure of experimental setup was up to 4.0 MPa, the solid-gas ratio was up to 11.73 kg·kg^-1, and the diameter of conveying pipeline was 10 mm. The pipeline thickness of 8-electrode ECT system was 5 mm. An improved AC-based capacitance measuring circuit was developed. Single channel capacitance measuring circuit was adopted to simplify the ECT hardware. Landweber algorithm was used to reconstruct image. The flow characteristics of dense-phase pneumatic conveying was investigated with the method of ECT experiment. Finally, the serial ECT image was compared with the result of Fluent simulation to validate the reliability.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2009年第4期892-897,共6页
CIESC Journal
基金
国家自然科学基金重点项目(50836003)
国家重点基础研究发展计划项目(2004CB217702)~~
关键词
电容层析成像
厚管壁
气力输送
electrical capacitance tomography
thick-pipeline
pneumatic conveying
